<SEC-DOCUMENT>0001336920-24-000042.txt : 20240621
<SEC-HEADER>0001336920-24-000042.hdr.sgml : 20240621
<ACCEPTANCE-DATETIME>20240621153514
ACCESSION NUMBER:		0001336920-24-000042
CONFORMED SUBMISSION TYPE:	11-K
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20231231
FILED AS OF DATE:		20240621
DATE AS OF CHANGE:		20240621

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Leidos Holdings, Inc.
		CENTRAL INDEX KEY:			0001336920
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
		ORGANIZATION NAME:           	06 Technology
		IRS NUMBER:				203562868
		FISCAL YEAR END:			0103

	FILING VALUES:
		FORM TYPE:		11-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33072
		FILM NUMBER:		241059897

	BUSINESS ADDRESS:	
		STREET 1:		1750 PRESIDENTS STREET
		CITY:			RESTON
		STATE:			VA
		ZIP:			20190
		BUSINESS PHONE:		571-526-6000

	MAIL ADDRESS:	
		STREET 1:		1750 PRESIDENTS STREET
		CITY:			RESTON
		STATE:			VA
		ZIP:			20190

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SAIC, Inc.
		DATE OF NAME CHANGE:	20050823
</SEC-HEADER>
<DOCUMENT>
<TYPE>11-K
<SEQUENCE>1
<FILENAME>ldos12292311-k.htm
<DESCRIPTION>11-K
<TEXT>
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<title>Document</title></head><body><div id="i9be7346e46da4241b9445e42215afc93_1"></div><div style="min-height:65.95pt;width:100%"><div><font><br></font></div></div><div style="margin-bottom:10pt;padding-left:193.25pt;padding-right:193.25pt;text-align:center"><font><br></font></div><div style="-sec-extract:summary;margin-bottom:0.1pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"></td><td style="width:98.900%"></td><td style="width:0.1%"></td></tr><tr style="height:5pt"><td colspan="3" style="border-bottom:2pt solid #000;padding:0 1pt"></td></tr></table></div><div style="margin-bottom:0.1pt;padding-left:93.17pt;padding-right:93.17pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;padding-left:194.42pt;padding-right:194.42pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:18pt;font-weight:700;line-height:111%">UNITED STATES</font></div><div style="padding-left:71.3pt;padding-right:71.3pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:18pt;font-weight:700;line-height:111%">SECURITIES AND EXCHANGE COMMISSION</font></div><div style="padding-left:191.8pt;padding-right:191.8pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:700;line-height:111%">WASHINGTON, D.C. 20549</font></div><div style="margin-top:0.2pt"><font><br></font></div><div style="padding-left:216.32pt;padding-right:216.32pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:18pt;font-weight:700;line-height:120%">FORM 11-K</font></div><div style="margin-top:0.4pt;text-align:center"><font><br></font></div><div style="margin-top:9pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:700;line-height:120%">&#9746;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;ANNUAL REPORT PURSUANT TO SECTION&#160;15(d)&#160;OF THE SECURITIES EXCHANGE ACT OF 1934 </font></div><div style="margin-top:9pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">For the fiscal year ended December 31, 2023</font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Calibri',sans-serif;font-size:11pt;font-weight:700;line-height:133%">OR</font></div><div style="margin-top:9pt;padding-left:24.45pt;text-indent:-24.5pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:700;line-height:120%">&#9744;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;TRANSITION REPORT PURSUANT TO SECTION&#160;15(d)&#160;OF THE SECURITIES EXCHANGE ACT OF 1934 </font></div><div style="margin-top:9pt;padding-left:169.25pt;padding-right:169.25pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">For the transition period from&#160;&#160;&#160;&#160;to</font></div><div style="margin-top:9pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">Commission file number&#58; 001-33072</font></div><div><font><br></font></div><div style="padding-left:27.05pt;padding-right:-1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">A. Full title of plan and the address of the plan, if different from that of the issuer named below&#58;</font></div><div><font><br></font></div><div style="padding-left:127.82pt;padding-right:127.82pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Leidos, Inc. Retirement Plan</font></div><div><font><br></font></div><div style="padding-left:27.05pt;padding-right:-1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">B. Name of issuer of the securities held pursuant to the plan and the address of its principal executive office&#58;</font></div><div><font><br></font></div><div style="padding-left:218.5pt;padding-right:218.5pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Leidos Holdings, Inc.</font></div><div style="padding-left:218.5pt;padding-right:218.5pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">1750 Presidents Street</font></div><div style="padding-left:218.5pt;padding-right:218.5pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Reston, VA 20190</font></div><div style="margin-bottom:0.1pt;padding-left:106pt;padding-right:106pt;text-align:center"><font><br></font></div><div style="margin-bottom:10pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"></td><td style="width:98.900%"></td><td style="width:0.1%"></td></tr><tr style="height:5pt"><td colspan="3" style="border-bottom:2pt solid #000;padding:0 1pt"></td></tr></table></div><div style="height:14pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt"><font><br></font></div></div></div><div id="i9be7346e46da4241b9445e42215afc93_4"></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div><font><br></font></div></div><div style="-sec-extract:summary;margin-bottom:0.1pt;padding-right:-0.75pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">LEIDOS, INC. RETIREMENT PLAN</font></div><div style="margin-bottom:0.1pt;padding-right:-1.25pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">TABLE OF CONTENTS</font></div><div style="margin-bottom:0.1pt;padding-left:109.07pt;padding-right:109.07pt;text-align:center"><font><br></font></div><div style="margin-top:0.5pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"></td><td style="width:89.104%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:8.696%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%;text-decoration:underline">Page</font></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_7" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM (SUCCESSOR AUDITOR)</a></font></div></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_7" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">1</a></font></div></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_249" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM (PREDECESSOR AUDITOR)</a></font></div></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_249" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">2</a></font></div></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">FINANCIAL STATEMENTS&#58;</font></div></td><td colspan="3" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;padding-left:12pt"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_10" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">Statements of Net Assets Available for Benefits as of December 31, 2023 and 2022</a></font></div></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_10" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">3</a></font></div></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;padding-left:12pt"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_13" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">Statement of Changes in Net Assets Available for Benefits for the year ended December 31, 2023</a></font></div></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_13" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">4</a></font></div></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;padding-left:12pt"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_16" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">Notes to Financial Statements</a></font></div></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_16" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">5</a></font></div></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">SUPPLEMENTAL SCHEDULE&#58;</font></td><td colspan="3" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;padding-left:21pt;text-indent:-9pt"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_549755814178" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">Form 5500, Schedule H, Part IV, Line 4a - Schedule of Delinquent Participant Contributions for the Year Ended December 31, 2023</a></font></div></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_549755814178" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">12</a></font></div></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;padding-left:21pt;text-indent:-9pt"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_19" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">Form 5500, Schedule H, Part IV, Line 4i - Schedule of Assets (Held at End of Year) as of </a><a href="#i9be7346e46da4241b9445e42215afc93_19" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">December 31, 2023</a></font></div></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_19" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">13</a></font></div></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_22" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">S</a><a href="#i9be7346e46da4241b9445e42215afc93_22" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">IGNATURE</a></font></div></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_22" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">14</a></font></div></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">EXHIBIT INDEX&#58;</font></div></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_25" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">15</a></font></div></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;padding-left:6pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_28" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">Exhibit 23.1 - Consent of Independent Registered Public Accounting Firm (Successor Auditor)</a></font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%"> </font></div></td><td colspan="3" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;&#160;&#160;</font><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_549755814164" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">Exhibit 23.2 - Consent of Independent Registered Public Accounting Firm (Predecessor Auditor)</a></font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%"> </font></div></td><td colspan="3" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">NOTE&#58; All other schedules required by Section 29 CFR 2520.103-10 of the Department of Labor&#8217;s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974 have been omitted because they are not applicable.</font></td><td colspan="3" style="padding:0 1pt"></td></tr></table></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt"><font><br></font></div></div></div><div id="i9be7346e46da4241b9445e42215afc93_7"></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div style="padding-right:-0.75pt;text-align:center"><font><br></font></div></div><div style="margin-top:3pt;padding-right:-0.5pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:700;line-height:120%">REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM</font></div><div><font><br></font></div><div><font><br></font></div><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">Plan Administrator and Plan Participants </font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">Leidos, Inc. Retirement Plan</font></div><div style="margin-bottom:0.1pt"><font><br></font></div><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:112%">Opinion on the financial statements </font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">We have audited the accompanying statement of net assets available for benefits of Leidos, Inc. Retirement Plan (the &#8220;Plan&#8221;) as of December 31, 2023, the related statement of changes in net assets available for benefits for the year ended December 31, 2023, and the related notes (collectively referred to as the &#8220;financial statements&#8221;). In our opinion, the financial statements present fairly, in all material respects, the net assets available for benefits of the Plan as of December 31, 2023, and the changes in net assets available for benefits for the year ended December 31, 2023, in conformity with accounting principles generally accepted in the United States of America.</font></div><div><font><br></font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:112%">Basis for opinion</font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">These financial statements are the responsibility of the Plan&#8217;s management. Our responsibility is to express an opinion on the Plan&#8217;s financial statements based on our audit. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (&#8220;PCAOB&#8221;) and are required to be independent with respect to the Plan in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. </font></div><div><font><br></font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Plan is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audit we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Plan&#8217;s internal control over financial reporting. Accordingly, we express no such opinion. </font></div><div><font><br></font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">Our audit included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audit also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audit provides a reasonable basis for our opinion. </font></div><div><font><br></font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:112%">Supplemental information</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%"> </font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">The supplemental schedules, Schedule H, Line 4a &#8211; Schedule of Delinquent Participant Contributions for the year ended December 31, 2023 and Schedule H, Line 4i &#8211; Schedule of Assets (Held at End of Year) as of December 31, 2023 (&#8220;supplemental information&#8221;)  have been subjected to audit procedures performed in conjunction with the audit of the Plan&#8217;s financial statements. The supplemental information is the responsibility of the Plan&#8217;s management. Our audit procedures included determining whether the supplemental information reconciles to the financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the information presented in the supplemental information. In forming our opinion on the supplemental information, we evaluated whether the supplemental information, including its form and content, is presented in conformity with the Department of Labor&#8217;s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. In our opinion, the supplemental information is fairly stated, in all material respects, in relation to the financial statements as a whole.</font></div><div><font><br></font></div><div><font><br></font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">&#47;s&#47; GRANT THORNTON LLP</font></div><div><font><br></font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:140%">We have served as the Plan&#8217;s auditor since 2024.</font></div><div><font><br></font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:107%">Arlington, Virginia </font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:107%">June 21, 2024</font></div><div style="height:27pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Calibri',sans-serif;font-size:11pt;font-weight:400;line-height:133%">1</font></div></div></div><div id="i9be7346e46da4241b9445e42215afc93_249"></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div style="padding-right:-0.75pt;text-align:center"><font><br></font></div></div><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:700;line-height:120%">REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM</font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">To the Retirement Plans Committee, Plan Administrator and Plan Participants</font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">Leidos, Inc. Retirement Plan</font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">Reston, Virginia</font></div><div><font><br></font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:112%">Opinion on the Financial Statement</font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">We have audited the accompanying statement of net assets available for benefits of Leidos, Inc. Retirement Plan (the &#8220;Plan&#8221;) as of December 31, 2022, and the related notes to the financial statement (collectively, the &#8220;financial statement&#8221;). In our opinion, the financial statement presents fairly, in all material respects, the net assets available for benefits of the Plan as of December 31, 2022, in conformity with accounting principles generally accepted in the United States of America.</font></div><div><font><br></font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:112%">Basis for Opinion</font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">The financial statement is the responsibility of the Plan&#8217;s management. Our responsibility is to express an opinion on the Plan&#8217;s financial statement based on our audit. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (&#8220;PCAOB&#8221;) and are required to be independent with respect to the Plan in accordance with U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.</font></div><div><font><br></font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statement is free of material misstatement, whether due to error or fraud. Our audit included performing procedures to assess the risks of material misstatement of the financial statement, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statement. Our audit also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statement. We believe that our audit provides a reasonable basis for our opinion.</font></div><div><font><br></font></div><div><font><br></font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">&#47;s&#47; Elliott Davis, LLC</font></div><div><font><br></font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">We served as the Plan's auditor from 2016 to 2023.</font></div><div><font><br></font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">Augusta, Georgia</font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">June 28, 2023</font></div><div style="height:27pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Calibri',sans-serif;font-size:11pt;font-weight:400;line-height:133%">2</font></div></div></div><div id="i9be7346e46da4241b9445e42215afc93_10"></div><hr style="page-break-after:always"><div style="min-height:54pt;width:100%"><div style="padding-right:-1.25pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">LEIDOS, INC. RETIREMENT PLAN</font></div><div style="padding-right:-1.25pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:110%">STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS</font></div><div style="margin-bottom:0.1pt;padding-right:-1.25pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:110%">AS OF DECEMBER 31, 2023 AND 2022</font></div></div><div style="padding-right:-0.75pt;text-align:center"><font><br></font></div><div style="text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.861%"><tr><td style="width:1.0%"></td><td style="width:71.639%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.495%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:11.834%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.495%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:11.837%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-bottom:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">2023</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-bottom:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">2022</font></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="12" style="padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:133%">(in thousands)</font></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">ASSETS&#58;</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 7pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Investments&#58;</font></td><td colspan="6" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Investment in Leidos, Inc. Master Trust at fair value</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">9,859,925</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">8,019,757&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Investment in Leidos, Inc. Master Trust at contract value</font></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">652,696</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">582,851&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 7pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Total investments</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-bottom:1pt solid #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;border-bottom:1pt solid #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">10,512,621</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;border-bottom:1pt solid #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">8,602,608&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 7pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Receivables&#58;</font></td><td colspan="6" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Notes receivable from participants</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">72,490</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">64,105&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">NET ASSETS AVAILABLE FOR BENEFITS</font></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">10,585,111</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">8,666,713&#160;</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr></table></div><div style="margin-bottom:0.1pt;padding-left:102.67pt;padding-right:102.67pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">See notes to financial statements.</font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">3</font></div></div></div><div id="i9be7346e46da4241b9445e42215afc93_13"></div><hr style="page-break-after:always"><div style="min-height:54pt;width:100%"><div style="padding-right:-0.5pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:101%">LEIDOS, INC. RETIREMENT PLAN</font></div><div style="padding-right:-0.5pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:101%">STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS</font></div><div style="padding-right:-0.35pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:110%">FOR THE YEAR ENDED DECEMBER 31, 2023 </font></div></div><div style="padding-right:-0.5pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;padding-right:-0.5pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:98.194%"><tr><td style="width:1.0%"></td><td style="width:85.038%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.507%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:12.055%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">2023</font></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:133%">(in thousands)</font></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">ADDITIONS&#58;</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><div style="margin-bottom:0.1pt;padding-left:6pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Investment income&#58;</font></div></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Plan interest in Leidos, Inc. 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style="background-color:#ffffff;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 7pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Interest income on notes receivable from participants</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">4,122</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 7pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Contributions&#58;</font></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Participants</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">365,535</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Employer</font></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">153,418</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Employee rollovers</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">76,028</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 7pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Total contributions</font></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">594,981</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><div style="margin-bottom:0.1pt;padding-left:6pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Total income and contributions</font></div></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">2,125,013</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr style="height:9pt"><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">DEDUCTIONS&#58;</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 7pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Distributions paid to participants</font></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">765,899</font><font 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2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Total deductions</font></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">768,410</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr style="height:15pt"><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">INCREASE IN NET ASSETS AVAILABLE FOR BENEFITS</font></div></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">1,356,603</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">PLAN TO PLAN TRANSFERS IN (NOTE 1)</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">561,795</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">NET ASSETS AVAILABLE FOR BENEFITS&#58;</font></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 7pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Beginning of year</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New 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#000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">10,585,111</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr></table></div><div style="padding-left:102.67pt;padding-right:102.67pt;text-align:center"><font><br></font></div><div style="margin-top:1.75pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">See notes to financial statements. </font></div><div style="margin-top:0.45pt"><font><br></font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">4</font></div></div></div><div id="i9be7346e46da4241b9445e42215afc93_16"></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div style="margin-bottom:0.1pt;padding-right:-0.87pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">LEIDOS, INC. RETIREMENT PLAN</font></div><div style="padding-left:72.17pt;padding-right:72.17pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">NOTES TO FINANCIAL STATEMENTS </font></div><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">DECEMBER 31, 2023 AND 2022</font></div><div style="padding-left:33.82pt;padding-right:33.82pt;text-align:center"><font><br></font></div></div><div style="margin-top:0.3pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">1.</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%;padding-left:28.5pt">DESCRIPTION OF THE PLAN</font></div><div style="padding-left:27.2pt;padding-right:-1pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The following brief description of the Leidos, Inc. Retirement Plan (the &#8220;Plan&#8221;) is for general information purposes only. Participants should refer to the Plan document amended and restated as of January 3, 2023, for more complete information regarding the Plan. Within these financial statements, Leidos, Inc. (the &#8220;Company&#8221;) refers to the sponsoring employer, and Leidos Holdings, Inc. (&#8220;Leidos&#8221;) refers to the publicly-traded parent of the sponsoring employer.</font></div><div style="padding-left:5.75pt;padding-right:5.75pt;text-indent:21.6pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">General</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;The Plan is a defined contribution plan sponsored by the Company and is subject to the provisions of the Employee Retirement Income Security Act of 1974 (&#8220;ERISA&#8221;), as amended. The Plan is a defined contribution 401(k) plan with profit-sharing and employee stock ownership plan (&#8220;ESOP&#8221;) features. Contributions to the Plan from participants and the Company are held in a qualified retirement trust fund. The Leidos, Inc. Retirement Plans Committee is the Plan&#8217;s named fiduciary for purposes of Section 402(a) of ERISA.</font></div><div><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Investment Funds</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;As of December 31, 2023 and 2022, the Plan held an interest in the Leidos, Inc. Master Trust (&#8220;Master Trust&#8221;).</font></div><div style="margin-bottom:0.1pt"><font><br></font></div><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Eligibility</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;Employees of the Company and its subsidiaries that have adopted the Plan are eligible to participate in the Plan. Employees must be in an eligible fringe benefit package to be eligible to receive Company matching 401(k) contributions, profit sharing contributions, and ESOP contributions. Employees may make elective contributions and receive Company matching 401(k) contributions upon commencing employment.</font></div><div><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Participant Contributions</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;The Plan permits participants to contribute up to 90% of their eligible compensation, as defined, to the Plan, subject to statutory limitations. Participants who have attained the age of 50 before the end of the plan year are eligible to make catch-up contributions. Certain participants within their collective bargaining agreement with the Company may make an additional elective contribution that is deducted from their Cash or Deferral Agreement. Participants may also contribute amounts representing rollovers from other qualified plans. Participant contributions are invested according to participant direction into any of the available investment funds of the Plan. Participant contributions and rollovers to the Leidos Common Stock Fund are limited to a maximum 50% of the employee deferral or rollover, as applicable.</font></div><div style="margin-bottom:0.1pt"><font><br></font></div><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Plan Transfers</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;The Company completed the acquisition of</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> Dynetics, Inc. (&#34;Dynetics&#34;) on January 31, 2020. Assets of the Dynetics 401(k) Plan and the Dynetics Savings Plan (collectively referred to as the &#34;Dynetics Plans&#34;) were transferred into the Plan in-kind on December 30, 2022, for $201,522,000 with the remaining $561,795,000 of net assets, including notes receivable from participants of $3,200,000, transferred on January 10, 2023. Participants of the Dynetics Plans who were employed with Dynetics as of January 2, 2023, were immediately eligible to participate in the Plan on or after January 3, 2023.</font></div><div style="padding-left:5.75pt;padding-right:7.2pt;text-indent:21.6pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Employer Contributions</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;The Company may make discretionary contributions, which include matching 401(k) contributions, non-elective contributions, and ESOP contributions. Eligible participants may receive Company matching 401(k) contributions based on a maximum match percentage of 100%, depending on fringe level, of the first 5% of eligible compensation contributed to the Plan (up to a maximum match percentage of 5%), which are invested per participant direction. The Company, at its discretion, may also make additional contributions to the Plan for the benefit of non-highly compensated participants in order to comply with Section 401(k)(3) of the Internal Revenue Code. The Company made no additional contributions for the benefit of non-highly compensated participants for the year ended December 31, 2023. Company contributions to the Plan for the year ended December 31, 2023, were made in cash and transfers from the forfeiture account. </font></div><div style="padding-left:5.75pt;padding-right:7.2pt;text-indent:21.6pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Participant Accounts</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;In accordance with Plan provisions, individual accounts are maintained for each Plan participant. Each participant&#8217;s account is credited with the participant&#8217;s contributions, and if eligible, allocations of Company discretionary contributions. Allocations are based on participant eligible compensation, as defined in the Plan document. Participant accounts also reflect changes from investment income and losses and from distributions. The benefit to which a participant is entitled is the vested balance of his or her account.</font></div><div style="margin-bottom:0.1pt;padding-right:7.9pt"><font><br></font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">5</font></div></div></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div style="padding-left:35.82pt;padding-right:35.82pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">LEIDOS, INC. RETIREMENT PLAN</font></div><div style="padding-left:72.17pt;padding-right:72.17pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">NOTES TO FINANCIAL STATEMENTS</font></div><div style="margin-bottom:0.1pt;padding-left:35.82pt;padding-right:35.82pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%"> DECEMBER 31, 2023 AND 2022</font></div><div style="padding-left:33.82pt;padding-right:33.82pt;text-align:center"><font><br></font></div></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Vesting and Forfeitures</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;Participant&#8217;s elective deferrals and rollover contributions together with associated earnings vest immediately. Company contributions vest 25% for each of the first two calendar years during which the participant works at least 850 hours and become fully vested after the participant completes three years of vesting service, as defined by the Plan. In addition, participants become fully vested in Company contributions while employed with the Company upon reaching age 59-1&#47;2, permanent disability, or death. Upon termination of employment with the Company, participants forfeit any portion of Company contributions that have not yet vested when they take a full distribution or after five one-year breaks in service. Forfeitures may be applied to future Company matching 401(k) contributions, to provide reinstatement due to military leave, to increase profit sharing contributions, or to pay Plan expenses. During the year ended December 31, 2023, the Company applied forfeited non-vested amounts of approximately $4,962,000 primarily toward Company matching 401(k) contributions. As of December 31, 2023 and 2022, forfeited non-vested accounts available for application by the Company totaled approximately $745,000 and $512,000, respectively.</font></div><div style="padding-left:5.75pt;padding-right:2.9pt;text-indent:21.6pt"><font><br></font></div><div style="padding-right:-1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Notes Receivable from Participants</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;Participants may borrow up to 50% of their vested account balance, up to a maximum of $50,000. Loan repayment periods may not exceed 60 months except for loans used to acquire a principal residence, in which case the repayment period may not exceed 30 years. The loans are secured by the vested account balance in the participant&#8217;s account and bear interest at a rate commensurate with local prevailing rates as determined monthly by the Plan administrator. The loans are recorded at amortized cost, which is the remaining unpaid principal balance plus any accrued but unpaid interest. Principal and interest are collected ratably through payroll deductions or through direct payments from terminated employees who have loans. Delinquent loans are reclassified as distributions based upon the terms of the Plan. As of December 31, 2023, outstanding loans bear interest at rates ranging from 4.25% to 9.50%, and have maturities from January 2024</font><font style="background-color:#ffffff;color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> through October 2053.</font></div><div><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Distributions to Participants</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;For vested account balances less than or equal to $1,000, participants receive their vested account balance in a single lump sum within 16 calendar months following termination of employment with the Company. For balances over $1,000 and less than or equal to $5,000, participants have an opportunity to elect a cash distribution or a rollover to another eligible plan within 16 calendar months following termination. Otherwise, the balance will automatically be rolled over to a Vanguard IRA. For vested account balances that exceed $5,000, a participant&#8217;s vested account balance is not distributed unless the participant elects to take a distribution following the participant&#8217;s termination of employment with the Company. Regardless of the existing account balance, distributions are made to participants who die or become permanently disabled while employed by the Company. After attaining age 59-1&#47;2, a participant may make withdrawals even if still employed by the Company. A participant may make withdrawals from the Plan prior to attaining age 59-1&#47;2 of their rollover account, after-tax account or if the participant incurs a financial hardship, as specified by the Plan. Former employees, regardless of their age, may elect to receive unlimited distributions in any given plan year, of all or a portion of their account balance.</font></div><div style="padding-left:5.45pt;padding-right:3.2pt;text-indent:21.6pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Tax Status</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;The Internal Revenue Service (&#8220;IRS&#8221;) has determined and informed the Company by a letter dated February 21, 2024, that the Plan was designed in accordance with the applicable requirements of the Internal Revenue Code (&#34;IRC&#34;) and that the Plan is exempt from federal income tax under Section 501(a) of the IRC. Accordingly, no provision for income taxes has been included in the Plan&#8217;s financial statements.</font></div><div style="margin-bottom:0.1pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Accounting principles generally accepted in the United States of America require plan management to evaluate tax positions taken by the Plan and recognize a tax liability if the organization has taken an uncertain position that more likely than not would not be sustained upon examination by the Internal Revenue Service and other taxing authorities. The Plan is subject to routine audits by taxing jurisdictions&#59; however, there are currently no audits for any tax periods in progress.</font></div><div style="padding-left:5.45pt;padding-right:10.75pt;text-indent:21.6pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Related-Party and Party-in-Interest Transactions</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;Certain Plan investments are managed by The Vanguard Group, the Plan&#8217;s trustee and record-keeper&#59; therefore, transactions with these investments qualify as party-in-interest transactions. Fees paid to the record-keeper were approximately $2,511</font><font style="background-color:#ffffff;color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">,000 </font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">for the year ended December 31, 2023. There were no amounts payable to the Plan&#8217;s record-keeper as of December 31, 2023 and 2022. Members of the Company&#8217;s Retirement Plans Committee also participate in the Plan. The Company pays directly any other fees related to the Plan&#8217;s operation. In addition, TD Ameritrade is the custodian of selected assets, and therefore, these transactions represent exempt party-in-interest transactions. Effective September 5, 2023, TD Ameritrade transitioned the Plan's assets to Charles Schwab. All fees and services remain in place subsequent to the transfer.</font></div><div><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">A portion of the Plan's assets are invested in common stock of the Company.&#160;While the holding and acquisition of employer securities is generally prohibited by ERISA, the Plan meets the exception in ERISA section 407(b), which permits the acquisition and holding of employer securities by an eligible individual account plan.</font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">6</font></div></div></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div style="padding-left:35.82pt;padding-right:35.82pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">LEIDOS, INC. RETIREMENT PLAN</font></div><div style="padding-left:72.17pt;padding-right:72.17pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">NOTES TO FINANCIAL STATEMENTS</font></div><div style="margin-bottom:0.1pt;padding-left:35.82pt;padding-right:35.82pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%"> DECEMBER 31, 2023 AND 2022</font></div><div style="padding-left:33.82pt;padding-right:33.82pt;text-align:center"><font><br></font></div></div><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">At December 31, 2023 and 2022, Leidos Holdings, Inc. common stock held by the Master Trust were&#58;</font></div><div style="margin-top:1.9pt;padding-right:-1pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"></td><td style="width:68.198%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.530%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.519%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.530%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.523%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">2023</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">2022</font></td></tr><tr style="height:3pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:133%">(in thousands)</font></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Number of Shares</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">6,197</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">6,462&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Cost Basis</font></td><td colspan="3" style="padding:0 1pt"></td><td style="padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">286,326</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="padding:0 1pt"></td><td style="padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">287,445&#160;</font></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Fair Value</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">671,432</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">679,857&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr></table></div><div style="margin-top:1.9pt;padding-left:5.45pt;padding-right:-1pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Termination of the Plan</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;Although it has not expressed any intent to do so, the Company has the right under the Plan to discontinue its contributions and to terminate the Plan at any time subject to the provisions of ERISA. Upon termination of the Plan, the participants become 100% vested in any unvested portion of their accounts.</font></div><div style="text-align:center"><font><br></font></div><div style="padding-right:29pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">2. &#160;&#160;&#160;&#160;SIGNIFICANT ACCOUNTING POLICIES</font></div><div style="margin-bottom:0.1pt;padding-right:-1pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Basis of Accounting</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;The Plan&#8217;s financial statements are prepared on the accrual basis of accounting in accordance with accounting principles generally accepted in the United States of America. Investment transactions are accounted for on their trade dates.</font></div><div style="padding-left:5.45pt;padding-right:9.7pt;text-indent:21.6pt"><font><br></font></div><div style="padding-right:3.15pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with generally accepted accounting principles requires Plan management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements, and the reported amounts of additions and deductions during the reporting periods. Actual results may differ from those estimates.</font></div><div style="padding-right:3.15pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Investment Valuation and Income Recognition</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;Investments are held by the Leidos, Inc. Master Trust as of December 31, 2023 and 2022, and are primarily reported at fair value. Fair value is the price that would have been received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. As of December 31, 2023, the Master Trust held investments in Mutual Funds, Common Stock, a Self-Directed Brokerage Fund, a Separately Managed Account</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">, </font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Collective Trusts, and a Stable Value Fund.</font></div><div style="margin-bottom:0.1pt;padding-left:27pt;padding-right:6.65pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Realized gains and losses on sales of investments are calculated as the difference between the fair value of the investments upon sale and the fair value of the investments at purchase. Unrealized appreciation or depreciation is calculated as the difference between the fair value of the investments at the end of the year and the fair value of the investments at the beginning of the year or at purchase if purchased during the year. Interest income is recorded on the accrual basis of accounting. Dividends are recorded on the ex-dividend date.</font></div><div><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Notes Receivable from Participants</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;Notes receivable from participants are carried at the aggregate unpaid principal balance of loans outstanding.</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Interest income is recorded on the accrual basis. Related fees are recorded as administrative expenses and are expensed when incurred.</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">If a participant ceases to make loan repayments and the plan administrator deems the participant loan to be in default, the participant loan balance is reduced and a benefit payment is recorded.</font></div><div><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Administrative Expenses</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;Administrative expenses of the Plan are paid by the Plan sponsor or Plan participants as provided in the Plan document.</font></div><div style="padding-left:5.45pt;padding-right:-1pt"><font><br></font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Subsequent Events</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;The Plan has evaluated subsequent events through the date of this filing and no significant events were identified during the period.</font></div><div><font><br></font></div><div style="padding-right:-1pt"><font><br></font></div><div style="margin-bottom:0.1pt;padding-right:-1pt"><font><br></font></div><div style="margin-bottom:0.1pt;padding-right:-1pt"><font><br></font></div><div style="margin-bottom:0.1pt;padding-right:-1pt"><font><br></font></div><div style="margin-bottom:0.1pt;padding-right:-1pt"><font><br></font></div><div style="margin-bottom:0.1pt;padding-right:-1pt"><font><br></font></div><div style="margin-bottom:0.1pt;padding-right:-1pt"><font><br></font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">7</font></div></div></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div style="padding-left:35.82pt;padding-right:35.82pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">LEIDOS, INC. RETIREMENT PLAN</font></div><div style="padding-left:72.17pt;padding-right:72.17pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">NOTES TO FINANCIAL STATEMENTS</font></div><div style="margin-bottom:0.1pt;padding-left:35.82pt;padding-right:35.82pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%"> DECEMBER 31, 2023 AND 2022</font></div><div style="padding-left:33.82pt;padding-right:33.82pt;text-align:center"><font><br></font></div></div><div style="margin-bottom:0.1pt;padding-right:-1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">3.&#160;&#160;&#160;&#160;FAIR VALUE MEASUREMENTS</font></div><div style="margin-bottom:0.1pt;padding-right:-1pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Accounting guidance has been issued that establishes a framework for measuring fair value. That framework provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The three levels of the fair value hierarchy are described below&#58;</font></div><div><font><br></font></div><div style="padding-left:88.1pt;padding-right:34.55pt;text-indent:-59.05pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Level 1&#160;&#160;&#160;&#160;Observable inputs such as quoted prices in active markets.</font></div><div><font><br></font></div><div style="padding-left:88.1pt;padding-right:5pt;text-indent:-59.05pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Level 2&#160;&#160;&#160;&#160;Inputs other than quoted prices in active markets for identical assets or liabilities that are observable either directly or indirectly or quoted prices that are not active.</font></div><div style="margin-bottom:0.1pt;padding-right:5pt"><font><br></font></div><div style="padding-left:87.55pt;padding-right:-1pt;text-indent:-58.5pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Level 3&#160;&#160;&#160;&#160;Unobservable inputs in which there is little or no market data (e.g., discounted cash flow and other similar pricing models), which requires us to develop our own assumptions about the assumptions that market participants would use in pricing the asset or liability.</font></div><div style="padding-left:87.1pt;padding-right:-0.7pt;text-indent:-58.3pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The availability of observable market data is monitored to assess the appropriate classification of financial instruments within the fair value hierarchy. Changes in economic conditions or model-based valuation techniques may require the transfer of financial instruments from one fair value level to another. In such instances, the transfer is reported at the end of the reporting period.</font></div><div style="margin-bottom:0.1pt;padding-right:-1pt"><font><br></font></div><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Following is a description of the valuation methodologies used for assets measured at fair value.</font></div><div style="margin-bottom:0.1pt;padding-left:27pt;padding-right:6.65pt"><font><br></font></div><div style="margin-bottom:0.1pt;padding-right:6.65pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Investment in Mutual Funds</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;Investments mutual funds are stated at fair value using the closing market price on the last business day of each period presented.</font></div><div style="margin-bottom:0.1pt;padding-left:27pt;padding-right:6.65pt"><font><br></font></div><div style="margin-bottom:0.1pt;padding-right:6.65pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Investment in Common Stock</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;Investments in shares of Leidos Holdings, Inc. common stock which is publicly traded on the New York Stock Exchange, is recorded at its publicly-traded quoted market price as of the last business day of the plan year.</font></div><div style="margin-bottom:0.1pt;padding-left:27pt;padding-right:6.65pt"><font><br></font></div><div style="margin-bottom:0.1pt;padding-right:6.65pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Investment in a Self-Directed Brokerage Fund</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;Investments in the self-directed brokerage fund (&#34;SDBF&#34;) are stated at fair value based on quoted market prices or market data obtained from external independent sources. The SDBF primarily consists of stocks, cash, mutual funds, bonds, certificate of deposits, and preferred debt. </font></div><div style="margin-bottom:0.1pt;padding-left:27pt;padding-right:6.65pt"><font><br></font></div><div style="margin-bottom:0.1pt;padding-right:6.65pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Investment in Separately Managed Account</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;A portfolio of individual securities, including short term securities and common stock, that is managed on the participant's behalf. Investments in separately managed accounts are stated at fair value based on quoted market prices.</font></div><div style="margin-bottom:0.1pt;padding-left:27pt;padding-right:6.65pt"><font><br></font></div><div style="margin-bottom:0.1pt;padding-right:6.65pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Investment in Collective Trusts</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8212;Investments in collective trusts are stated at the net asset value (&#34;NAV&#34;), which is determined by the trustee using the fair value of the underlying investments.</font></div><div><font><br></font></div><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The following table sets forth by level, within the fair value hierarchy, the assets at fair value of the Master Trust as of December 31, 2023&#58;&#160;</font></div><div style="margin-bottom:0.1pt;padding-right:8.1pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"></td><td style="width:52.847%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.530%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.519%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.530%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.519%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.530%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.525%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">(Level 1)</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">(Level 2)</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">Total</font></td></tr><tr style="height:5pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="15" style="padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:133%">(in thousands)</font></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Mutual funds</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">920,830</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">&#8212;</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">920,830</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Common stock</font></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">671,432</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">&#8212;</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">671,432</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Self-directed brokerage fund</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">100,840</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">17,912</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">118,752</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Separately managed account</font></div></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">611,097</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">&#8212;</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">611,097</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Total assets in the fair value hierarchy</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">2,304,199</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">17,912</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">2,322,111</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Investments measured at NAV</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:6.5pt;font-weight:400;line-height:133%;position:relative;top:-3.5pt;vertical-align:baseline">(1)</font></div></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">8,133,763</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Investments at fair value</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">10,455,874</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr></table></div><div style="margin-bottom:0.1pt;padding-left:22.5pt;padding-right:-1pt;text-indent:-22.5pt"><font><br></font></div><div style="margin-bottom:0.1pt"><font><br></font></div><div style="margin-bottom:0.1pt"><font><br></font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">8</font></div></div></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div style="padding-left:35.82pt;padding-right:35.82pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">LEIDOS, INC. RETIREMENT PLAN</font></div><div style="padding-left:72.17pt;padding-right:72.17pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">NOTES TO FINANCIAL STATEMENTS</font></div><div style="margin-bottom:0.1pt;padding-left:35.82pt;padding-right:35.82pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%"> DECEMBER 31, 2023 AND 2022</font></div><div style="padding-left:33.82pt;padding-right:33.82pt;text-align:center"><font><br></font></div></div><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">The following table sets forth by level, within the fair value hierarchy, the assets at fair value of the Master Trust as of December 31, 2022&#58;</font></div><div style="margin-bottom:0.1pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.707%"><tr><td style="width:1.0%"></td><td style="width:68.108%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.533%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.562%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.533%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.564%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">(Level 1)</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Total</font></td></tr><tr style="height:5pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:133%">(in thousands)</font></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Mutual funds</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">804,786&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">804,786&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Common stock</font></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">679,857&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">679,857&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Self-directed brokerage fund</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">17,770&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">17,770&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Separately managed account</font></div></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">404,084&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">404,084&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Total assets in the fair value hierarchy</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">1,906,497&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">1,906,497&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Investments measured at NAV</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:6.5pt;font-weight:400;line-height:133%;position:relative;top:-3.5pt;vertical-align:baseline">(1)</font></div></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">6,594,104&#160;</font></td><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Investments at fair value</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="6" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">8,500,601&#160;</font></td><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr></table></div><div style="margin-bottom:0.1pt;margin-top:3pt;padding-left:22.5pt;padding-right:-1pt;text-indent:-22.5pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%">(1)</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:13.18pt">Investments measured at NAV per share or its equivalent are not classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the line items presented in the statements of net assets available for benefits. These investments, which represent the Master Trust&#8217;s investments in collective trusts, have no unfunded commitments, have a daily redemption frequency and do not have a redemption notice period. </font></div><div style="margin-bottom:0.1pt;padding-right:-1pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The availability of observable market data is monitored to assess the appropriate classification of financial instruments within the fair value hierarchy. Changes in economic conditions or model-based valuation techniques may require the transfer of financial instruments from one fair value level to another. In such instances, the transfer is reported at the beginning of the reporting period.</font></div><div style="padding-left:7.45pt;padding-right:8.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#160;</font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">We evaluate the significance of transfers between levels based upon the nature of the financial instrument and size of the transfer relative to total net assets available for benefits. For the years ended December 31, 2023 and 2022, there were no significant transfers in or out of levels 1, 2, or 3. The Plan did not have any Level 3 investments for the years ended December 31, 2023 and 2022.</font></div><div style="padding-left:7.45pt;padding-right:-1pt;text-indent:22.5pt"><font><br></font></div><div style="padding-right:-1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">4.&#160;&#160;&#160;&#160;PLAN INTEREST IN MASTER TRUST</font></div><div><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Plan&#8217;s investments are included in the investments of the Leidos, Inc. Master Trust. Each participant in the retirement plan directs their investments into the funds within the Master Trust. The Plan&#8217;s record keeper maintains supporting records for the purpose of allocating net assets and net gains and losses of each of the investments of the Plans and to each participant&#8217;s account based on participant direction. The Master Trust also includes investment assets of the QTC Management, Inc. Retirement Savings Plan, Leidos BioMedical Research Capital Accumulation Plan and the Leidos BioMedical Research Employee Savings Plan.</font></div><div style="padding-left:7.2pt;padding-right:7.9pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The following table presents the investments of the Master Trust and the Plan's interest in the Master Trust, as of December 31, 2023 and 2022&#58;</font></div><div style="margin-bottom:0.1pt;padding-right:8.1pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:97.514%"><tr><td style="width:1.0%"></td><td style="width:36.831%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.892%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.549%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.892%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.549%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.892%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.399%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.896%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Master Trust Balances</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Plan&#8217;s Interest in Master Trust Balances</font></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">2023</font></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">2022</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">2023</font></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">2022</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="21" style="padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:133%">(in thousands)</font></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Mutual funds</font></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">920,830</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">804,786&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">894,763</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">781,076&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Leidos Holdings, Inc. common stock</font></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">671,432</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">679,857&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">671,432</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">679,857&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Collective trusts</font></div></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">8,133,763</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">6,594,104&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">7,592,995</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">6,154,601&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Self-directed brokerage fund</font></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">118,752</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">17,770&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">116,263</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">17,414&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Separately managed account</font></div></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">611,097</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">404,084&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">584,472</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">386,809&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;&#160;&#160;&#160;&#160;Total investments at fair value</font></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">10,455,874</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">8,500,601&#160;</font></td><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">9,859,925</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">8,019,757&#160;</font></td><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Stable value fund at contract value</font></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">700,944</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">631,038&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">652,696</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">582,851&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;&#160;&#160;&#160;&#160;Total investments</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">11,156,818</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">9,131,639&#160;</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">10,512,621</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">8,602,608&#160;</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td></tr></table></div><div style="margin-bottom:0.1pt;padding-right:8.1pt"><font><br></font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">9</font></div></div></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div style="padding-left:35.82pt;padding-right:35.82pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">LEIDOS, INC. RETIREMENT PLAN</font></div><div style="padding-left:72.17pt;padding-right:72.17pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">NOTES TO FINANCIAL STATEMENTS</font></div><div style="margin-bottom:0.1pt;padding-left:35.82pt;padding-right:35.82pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%"> DECEMBER 31, 2023 AND 2022</font></div><div style="padding-left:33.82pt;padding-right:33.82pt;text-align:center"><font><br></font></div></div><div style="padding-right:8.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The following table represents the changes in net assets in the Master Trust for the year ended December 31, 2023&#58;</font></div><div><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:97.807%"><tr><td style="width:1.0%"></td><td style="width:83.204%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.547%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.849%"></td><td style="width:0.1%"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">2023</font></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:133%">(in thousands)</font></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Net appreciation in fair value of investments</font></div></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">1,583,811</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Interest and dividend income</font></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">30,070</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;&#160;&#160;&#160;&#160;Total investment income </font></div></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">1,613,881</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr style="height:11pt"><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Net transfers into Master Trust</font></div></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">411,298</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr style="height:11pt"><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Master Trust net assets&#58;</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#ffde0f;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">&#160;</font></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;&#160;&#160;&#160;&#160;Beginning</font></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">9,131,639</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;&#160;&#160;&#160;&#160;Ending</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">11,156,818</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:middle"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr></table></div><div><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">During 2023, the Plan received an allocation of </font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">94.5</font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">% on the net investment income in the Master Trust. Investment income is allocated to each plan based on the plan&#8217;s specific interest attributed to the underlying assets of the Master Trust.</font></div><div style="margin-bottom:0.1pt"><font><br></font></div><div style="padding-right:-1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">5.&#160;&#160;&#160;&#160;FULLY BENEFIT-RESPONSIVE INVESTMENT CONTRACTS</font></div><div style="margin-bottom:0.1pt"><font><br></font></div><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Master Trust invests in a stable value fund which holds traditional and synthetic guaranteed investment contracts (&#34;GICs&#34;) that are reported at contract value. Managed separate account GICs are investment contracts invested in insurance company separate accounts, established for the sole benefit of the stable value fund participants. Investment contracts accrue interest based on credit rates established by contract issuers. The synthetic GICs simulate the performance of guaranteed investment contracts through an issuer&#8217;s guarant</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">ee of a specific interest rate (the wrapper contract) and a portfolio of financial instruments which include intermediate bond funds and money market funds. </font><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Contract value is the relevant measurement attributable to a GIC because it is the amount participants would receive if they were to initiate permitted transactions under the terms of the plan. </font></div><div style="margin-bottom:0.1pt"><font><br></font></div><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Certain events can limit the ability of the Plan to transact at contract value. Such events include, but not limited to, complete or partial termination of the Plan or merger with another plan, divestitures of a subsidiary that cause a significant withdrawal from the Plan, or failure of the Plan or Master Trust to qualify for exemption from federal income taxes or any required prohibited transaction exemption under ERISA.</font></div><div style="margin-bottom:0.1pt"><font><br></font></div><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Investment contracts generally impose conditions on the Plan. If an event of default occurs and is not cured, the issuer may terminate the contract. These events may include a breach of material obligation under the contract or a material amendment to the Plan agreement that is not approved and accepted by the issuer. These events may limit the ability of the plan to transact at contract value. Plan management believes that the occurrence of an event that would cause the Master Trust to transact at less than contract value is not probable.</font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">10</font></div></div></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div style="padding-left:35.82pt;padding-right:35.82pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">LEIDOS, INC. RETIREMENT PLAN</font></div><div style="padding-left:72.17pt;padding-right:72.17pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">NOTES TO FINANCIAL STATEMENTS</font></div><div style="margin-bottom:0.1pt;padding-left:35.82pt;padding-right:35.82pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%"> DECEMBER 31, 2023 AND 2022</font></div><div style="padding-left:33.82pt;padding-right:33.82pt;text-align:center"><font><br></font></div></div><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">The following were investment contracts held by the Master Trust&#58;</font></div><div style="margin-bottom:0.1pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:98.099%"><tr><td style="width:1.0%"></td><td style="width:67.305%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.545%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.952%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.545%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.953%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">2023</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">2022</font></td></tr><tr style="height:3pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:133%">(in thousands)</font></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Traditional Investment Contracts</font></div></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">31,553</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">37,094&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Synthetic GICs</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">669,391</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">593,944&#160;</font></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="6" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Total</font></td><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">700,944</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">631,038&#160;</font></td><td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr></table></div><div style="margin-top:1.75pt;padding-left:7.45pt;padding-right:-1pt;text-indent:22.5pt"><font><br></font></div><div style="padding-right:-1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">6.&#160;&#160;&#160;&#160;RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500</font></div><div style="padding-right:34.05pt"><font><br></font></div><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">The following is a reconciliation of net assets available for benefits as reported in the financial statements to Schedule H on Form 5500&#58;</font></div><div style="margin-bottom:0.1pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:97.953%"><tr><td style="width:1.0%"></td><td style="width:67.407%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.546%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.825%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.546%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.976%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">2023</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">2022</font></td></tr><tr style="height:3pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:133%">(in thousands)</font></td></tr><tr><td colspan="6" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Net assets available for benefits as reported in financial statements</font></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">10,585,111</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">8,666,713&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="6" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Participant loans deemed distributed</font></td><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">(1,445)</font></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">(1,111)</font></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Deemed loans repaid</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">233</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">77&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="6" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Net assets available for benefits reported on Schedule H on Form 5500</font></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">10,583,899</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="padding:0 1pt"></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">8,665,679&#160;</font></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr></table></div><div style="padding-left:5.45pt;padding-right:2.85pt;text-indent:21.6pt"><font><br></font></div><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">The following is a reconciliation of changes in net assets available for benefits as reported in the financial statements to Schedule H on Form 5500&#58;</font></div><div style="padding-right:2.85pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:97.807%"><tr><td style="width:1.0%"></td><td style="width:83.204%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.547%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.849%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">2023</font></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:133%">(in thousands)</font></td></tr><tr><td colspan="6" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Increase in net assets available for benefits per the financial statements</font></div></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">1,356,603</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Net change in participant loans deemed distributed</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">(334)</font></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Net change in deemed loans repaid</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">156</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="6" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Net income per Schedule H on Form 5500</font></div></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">$</font></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">1,356,425</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#160;</font></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr></table></div><div style="margin-bottom:0.1pt"><font><br></font></div><div style="padding-right:-1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">7.&#160;&#160;&#160;&#160;RISKS AND UNCERTAINTIES</font></div><div style="padding-right:34.05pt"><font><br></font></div><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Plan invests in various securities. Investment securities, in general, are exposed to various risks, such as interest rate risk, credit risk, and overall market volatility. The Plan attempts to limit these risks by authorizing and offering participants a broad range of investment options that are invested in high quality securities or are offered and administered by reputable and known investment companies. Due to the level of risk associated with investment securities, it is reasonably possible that changes in the values of certain investment securities will occur in the near term and that such change could materially affect the amounts reported in the statements of net assets available for benefits. The Plan's exposure to a concentration of risk is limited by the diversification of investments across&#160;multiple&#160;investment fund options. Additionally, the investments within each investment fund option are further diversified into varied financial instruments. See Note 2 &#8211; Significant Accounting Policies.</font></div><div style="margin-top:4.6pt;padding-left:7.45pt;padding-right:34.05pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:110%"> </font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">11</font></div></div></div><div id="i9be7346e46da4241b9445e42215afc93_549755814178"></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">SUPPLEMENTAL SCHEDULE</font></div><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">LEIDOS, INC. RETIREMENT PLAN</font></div><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:114%">FORM 5500, SCHEDULE H, PART IV, LINE 4a&#8212;SCHEDULE OF DELINQUENT PARTICIPANT CONTRIBUTIONS YEAR ENDED DECEMBER 31, 2023 (in thousands)</font></div></div><div style="text-align:right"><font style="color:#000000;font-family:'Calibri',sans-serif;font-size:11pt;font-weight:400;line-height:133%">  </font><font style="color:#000000;font-family:'Calibri',sans-serif;font-size:11pt;font-weight:400;line-height:133%;text-decoration:underline">                                                                                                                                        </font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:700;line-height:133%;text-decoration:underline"> </font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%;text-decoration:underline">EIN&#58; 95-3630868            Plan #004</font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.853%"><tr><td style="width:1.0%"></td><td style="width:28.768%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.385%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:15.444%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.385%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:15.444%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.385%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:13.980%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.385%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:18.524%"></td><td style="width:0.1%"></td></tr><tr style="height:27pt"><td colspan="3" rowspan="2" style="padding:2px 1pt;text-align:center;vertical-align:middle"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">Participant Contributions Transferred Late to the Plan (Participant Loan Repayments are Included)</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="15" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">Totals That Constitute Nonexempt Prohibited Transactions</font></div></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" rowspan="2" style="padding:2px 1pt;text-align:left;vertical-align:top"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">Total Fully Corrected Under Voluntary Fiduciary Correction Program (VFCP) and Prohibited Transition Exemption 2002-51</font></div></td></tr><tr style="height:53pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">Contributions Not Corrected</font></div></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">Contributions Corrected Outside VFCP</font></div></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">Contributions Pending Correction in VFCP</font></div></td><td colspan="3" style="padding:0 1pt"></td></tr><tr><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">5&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">5&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#8212;&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#8212;&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#8212;&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr></table></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">12</font></div></div></div><div id="i9be7346e46da4241b9445e42215afc93_19"></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">SUPPLEMENTAL SCHEDULE</font></div><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:114%">LEIDOS, INC. RETIREMENT PLAN</font></div><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:114%">FORM 5500, SCHEDULE H, PART IV, LINE 4i&#8212;SCHEDULE OF ASSETS (HELD AT END OF YEAR) AS OF DECEMBER 31, 2023 (in thousands)</font></div><div style="margin-top:0.45pt;padding-right:-2.15pt;text-align:right"><font><br></font></div><div><font><br></font></div></div><div style="text-align:right"><font style="color:#000000;font-family:'Calibri',sans-serif;font-size:11pt;font-weight:400;line-height:133%">  </font><font style="color:#000000;font-family:'Calibri',sans-serif;font-size:11pt;font-weight:400;line-height:133%;text-decoration:underline">                                                                                                                                        </font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:700;line-height:133%;text-decoration:underline"> </font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%;text-decoration:underline">EIN&#58; 95-3630868            Plan #004</font></div><div style="margin-bottom:0.1pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"></td><td style="width:2.940%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.521%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:33.387%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.521%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:32.377%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.521%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:11.454%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.521%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:11.458%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">(a)</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">(b) Identity of Issue, Borrower, Lessor or Similar Party</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">(c) Description of Investment Including Maturity Date, Rate of Interest, Collateral, Par or Maturity Value</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">(d) Cost</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">(e) Current Value</font></td></tr><tr><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">*</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Notes Receivable from Participants</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:0.1pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Loans&#47;Interest rates from 4.25% to 9.50%&#59; maturities from January 2024 to October 2053</font></div></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">**</font></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">72,490&#160;</font></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">$</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">72,490&#160;</font></td><td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr></table></div><div style="text-align:center"><font><br></font></div><div style="text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:138%">*&#160;&#160;&#160;&#160;Indicates party-in-interest to the Plan.</font></div><div style="margin-bottom:0.1pt"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:138%">** &#160;&#160;&#160;&#160;Not applicable&#8212;participant-directed investment.</font></div><div style="margin-bottom:0.1pt;text-align:center"><font><br></font></div><div style="margin-bottom:0.1pt"><font><br></font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">13</font></div></div></div><div id="i9be7346e46da4241b9445e42215afc93_22"></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font><br></font></div><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font><br></font></div><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font><br></font></div><div><font><br></font></div></div><div style="margin-top:3.45pt;padding-left:114.42pt;padding-right:114.42pt;text-align:center"><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">SIGNATURE</font></div><div style="margin-top:0.2pt"><font><br></font></div><div><font style="color:#010202;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:110%">Pursuant to the requirements of the Securities Exchange Act of 1934, the Leidos, Inc. Retirement Plans Committee as Plan Administrator has duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.</font></div><div style="margin-top:0.05pt"><font><br></font></div><div style="margin-bottom:0.1pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"></td><td style="width:61.224%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:36.576%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">LEIDOS, INC. RETIREMENT PLAN</font></td></tr><tr style="height:15pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">Date&#58; June 21, 2024</font></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">&#47;s&#47; J. Councill Leak</font></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">J. Councill Leak</font></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%">Treasurer</font></td></tr></table></div><div style="margin-bottom:10pt"><font><br></font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">14</font></div></div></div><div id="i9be7346e46da4241b9445e42215afc93_25"></div><hr style="page-break-after:always"><div style="min-height:72pt;width:100%"><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font><br></font></div><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font><br></font></div><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font><br></font></div><div><font><br></font></div></div><div style="-sec-extract:summary;margin-bottom:0.1pt;margin-top:3.45pt;text-align:center"><font style="color:#050707;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:113%">Exhibit Index</font></div><div style="margin-top:3.45pt;padding-left:219.5pt;padding-right:219.5pt;text-align:center"><font><br></font></div><div style="margin-bottom:10pt"><font style="color:#050707;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:133%;text-decoration:underline">Exhibit No.</font></div><div style="margin-bottom:10pt"><font style="color:#050707;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">23.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</font><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_28" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Consent of Independent Registered Public Accounting Firm (Successor Auditor)</a></font></div><div style="margin-bottom:0.1pt"><font style="color:#050707;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">23</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</font><font style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline"><a href="#i9be7346e46da4241b9445e42215afc93_549755814164" style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%;text-decoration:underline">Consent of Independent Registered Public Accounting Firm (Predecessor Auditor)</a></font></div><div style="margin-bottom:10pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="-sec-extract:summary;margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">15</font></div></div></div><div id="i9be7346e46da4241b9445e42215afc93_28"></div><hr style="page-break-after:always"><div style="min-height:54pt;width:100%"><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font><br></font></div><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font><br></font></div><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font><br></font></div><div><font><br></font></div></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Exhibit 23.1</font></div><div style="text-align:center"><font><br></font></div><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM</font></div><div><font><br></font></div><div><font><br></font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">We have issued our report dated June 21, 2024, with respect to the financial statements and supplemental information included in the Annual Report of Leidos, Inc. Retirement Plan on Form 11-K for the year ended December 31, 2023. We consent to the incorporation by reference of said report in the Registration Statements of Leidos Holdings, Inc. in Forms S-8 (File Nos. 333-138095, 333-153360, 333-169693, and 333-218435).</font></div><div style="text-align:justify"><font><br></font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:107%">&#47;s&#47; GRANT THORNTON LLP</font></div><div style="text-align:justify"><font><br></font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </font></div><div style="margin-bottom:0.1pt;text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:112%">Arlington, Virginia</font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">June 21, 2024</font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">16</font></div></div></div><div id="i9be7346e46da4241b9445e42215afc93_549755814164"></div><hr style="page-break-after:always"><div style="min-height:54pt;width:100%"><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font><br></font></div><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font><br></font></div><div style="padding-left:72.97pt;padding-right:72.97pt;text-align:center"><font><br></font></div><div><font><br></font></div></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Exhibit 23.2</font></div><div style="text-align:center"><font><br></font></div><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM</font></div><div><font><br></font></div><div><font><br></font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">We consent to the incorporation by reference in Registration Statement Nos. 333-138095, 333-153360, 333-169693, and 333-218435 on Forms S-8 of Leidos Holdings, Inc. of our report dated June 28, 2023, relating to our audit of the financial statement of Leidos, Inc. Retirement Plan as of December 31, 2022, which appears in this Annual Report on Form 11-K of Leidos, Inc. Retirement Plan for the year ended December 31, 2023.</font></div><div><font><br></font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#47;s&#47; Elliott Davis, LLC</font></div><div><font><br></font></div><div><font><br></font></div><div><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Augusta, Georgia</font></div><div style="text-align:justify"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">June 21, 2024</font></div><div style="height:36pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="margin-bottom:0.1pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:133%">17</font></div></div></div></body></html>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
