<SEC-DOCUMENT>0000945621-25-000436.txt : 20250509
<SEC-HEADER>0000945621-25-000436.hdr.sgml : 20250509
<ACCEPTANCE-DATETIME>20250509124511
ACCESSION NUMBER:		0000945621-25-000436
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250509
DATE AS OF CHANGE:		20250509

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Donnelley Financial Solutions, Inc.
		CENTRAL INDEX KEY:			0001669811
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MISCELLANEOUS BUSINESS SERVICES [7380]
		ORGANIZATION NAME:           	07 Trade & Services
		EIN:				344829638
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-89770
		FILM NUMBER:		25929313

	BUSINESS ADDRESS:	
		STREET 1:		391 STEEL WAY
		CITY:			LANCASTER
		STATE:			PA
		ZIP:			17601
		BUSINESS PHONE:		800-823-5304

	MAIL ADDRESS:	
		STREET 1:		391 STEEL WAY
		CITY:			LANCASTER
		STATE:			PA
		ZIP:			17601

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Mawer Investment Management Ltd.
		CENTRAL INDEX KEY:			0001538449
		ORGANIZATION NAME:           	
		EIN:				000000000
		STATE OF INCORPORATION:			A0
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		517 10TH AVENUE S. W.
		STREET 2:		SUITE 600
		CITY:			CALGARY
		STATE:			A0
		ZIP:			T2R 0A8
		BUSINESS PHONE:		403-262-4673

	MAIL ADDRESS:	
		STREET 1:		517 10TH AVENUE S. W.
		STREET 2:		SUITE 600
		CITY:			CALGARY
		STATE:			A0
		ZIP:			T2R 0A8
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:com="http://www.sec.gov/edgar/common">
<headerData>
<submissionType>SCHEDULE 13G/A</submissionType>
<previousAccessionNumber>0000945621-24-000870</previousAccessionNumber>
<filerInfo>
<filer>
<filerCredentials>
<cik>0001538449</cik>
<ccc>XXXXXXXX</ccc>
</filerCredentials>
</filer>
<liveTestFlag>LIVE</liveTestFlag>



</filerInfo>
</headerData>
<formData>
<coverPageHeader>
<amendmentNo>1</amendmentNo>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<eventDateRequiresFilingThisStatement>03/31/2025</eventDateRequiresFilingThisStatement>
<issuerInfo>
<issuerCik>0001669811</issuerCik>
<issuerName>Donnelley Financial Solutions, Inc.</issuerName>
<issuerCusip>25787G100</issuerCusip>
<issuerPrincipalExecutiveOfficeAddress>
<com:street1>391 Steel Way</com:street1>
<com:city>Lancaster</com:city>
<com:stateOrCountry>PA</com:stateOrCountry>
<com:zipCode>17601</com:zipCode>
</issuerPrincipalExecutiveOfficeAddress>
</issuerInfo>
<designateRulesPursuantThisScheduleFiled>
<designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
</designateRulesPursuantThisScheduleFiled>
</coverPageHeader>
<coverPageHeaderReportingPersonDetails>

<reportingPersonName>Mawer Investment Management Ltd.</reportingPersonName>
<citizenshipOrOrganization>A0</citizenshipOrOrganization>
<reportingPersonBeneficiallyOwnedNumberOfShares>
<soleVotingPower>1332775</soleVotingPower>
<sharedVotingPower>0</sharedVotingPower>
<soleDispositivePower>1332775</soleDispositivePower>
<sharedDispositivePower>0</sharedDispositivePower>
</reportingPersonBeneficiallyOwnedNumberOfShares>
<reportingPersonBeneficiallyOwnedAggregateNumberOfShares>1332775</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
<aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
<classPercent>4.67</classPercent>
<typeOfReportingPerson>IA</typeOfReportingPerson>
<comments>Based upon 28,530,105 Common Stock of Donnelley Financial Solutions, Inc. (the "Issuer") outstanding as of March 17, 2025, as reported in the Issuer's Schedule 14A (Proxy Statement) filed with the Securities and Exchange Commission on April 2, 2025.</comments>
</coverPageHeaderReportingPersonDetails>
<items>
<item1>
<issuerName>Donnelley Financial Solutions, Inc.</issuerName>
<issuerPrincipalExecutiveOfficeAddress>391 Steel Way, Lancaster, Pennsylvania, 17601</issuerPrincipalExecutiveOfficeAddress>
</item1>
<item2>
<filingPersonName>Mawer Investment Management Ltd.</filingPersonName>
<principalBusinessOfficeOrResidenceAddress>600, 517 - 10th Avenue SW&#13;
Calgary, Alberta, Canada T2R 0A8</principalBusinessOfficeOrResidenceAddress>
<citizenship>Canada</citizenship>
</item2>
<item3>
<notApplicableFlag>N</notApplicableFlag>
<typeOfPersonFiling>IA</typeOfPersonFiling>
</item3>
<item4>
<amountBeneficiallyOwned>1,332,775</amountBeneficiallyOwned>
<classPercent>4.67</classPercent>
<numberOfSharesPersonHas>
<solePowerOrDirectToVote>1,332,775</solePowerOrDirectToVote>
<sharedPowerOrDirectToVote>0</sharedPowerOrDirectToVote>
<solePowerOrDirectToDispose>1,332,775</solePowerOrDirectToDispose>
<sharedPowerOrDirectToDispose>0</sharedPowerOrDirectToDispose>
</numberOfSharesPersonHas>
</item4>
<item5>
<notApplicableFlag>N</notApplicableFlag>
<classOwnership5PercentOrLess>Y</classOwnership5PercentOrLess>
</item5>
<item6>
<notApplicableFlag>Y</notApplicableFlag>
</item6>
<item7>
<notApplicableFlag>Y</notApplicableFlag>
</item7>
<item8>
<notApplicableFlag>Y</notApplicableFlag>
</item8>
<item9>
<notApplicableFlag>Y</notApplicableFlag>
</item9>
<item10>
<notApplicableFlag>N</notApplicableFlag>
<certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.</certifications>
</item10>
</items>
<signatureInformation>
<reportingPersonName>Mawer Investment Management Ltd.</reportingPersonName>
<signatureDetails>
<signature>/s/ Karan Phadke</signature>
<title>Karan Phadke, Portfolio Manager</title>
<date>04/25/2025</date>
</signatureDetails>
</signatureInformation>
</formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
