<SEC-DOCUMENT>0001654954-26-002205.txt : 20260312
<SEC-HEADER>0001654954-26-002205.hdr.sgml : 20260312
<ACCEPTANCE-DATETIME>20260312172052
ACCESSION NUMBER:		0001654954-26-002205
CONFORMED SUBMISSION TYPE:	SCHEDULE 13D/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20260312
DATE AS OF CHANGE:		20260312

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			374Water Inc.
		CENTRAL INDEX KEY:			0000933972
		STANDARD INDUSTRIAL CLASSIFICATION:	MOTORS & GENERATORS [3621]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				880271109
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-49830
		FILM NUMBER:		26749047

	BUSINESS ADDRESS:	
		STREET 1:		701 W. MAIN STREET
		STREET 2:		SUITE 410
		CITY:			DURHAM
		STATE:			NC
		ZIP:			27701
		BUSINESS PHONE:		440-609-9677

	MAIL ADDRESS:	
		STREET 1:		3710 SHANNON RD #51877
		STREET 2:		SUITE 410
		CITY:			DURHAM
		STATE:			NC
		ZIP:			27717

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	POWERVERDE, INC.
		DATE OF NAME CHANGE:	20080820

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	VYREX CORP
		DATE OF NAME CHANGE:	19951206

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			McKnight Stephen H.
		CENTRAL INDEX KEY:			0002114378
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13D/A

	MAIL ADDRESS:	
		STREET 1:		100 SOUTHCENTER COURT
		STREET 2:		SUITE 2000
		CITY:			MORRISVILLE
		STATE:			NC
		ZIP:			27560
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13D/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
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<amendmentNo>3</amendmentNo>
<securitiesClassTitle>Common Stock, $0.001 par value per share</securitiesClassTitle>
<dateOfEvent>01/22/2026</dateOfEvent>
<previouslyFiledFlag>false</previouslyFiledFlag>
<issuerInfo>
<issuerCIK>0000933972</issuerCIK>
<issuerCUSIP>88583P203</issuerCUSIP>
<issuerName>374Water Inc.</issuerName>
<address>
<ns0:street1>100 Southcenter Court</ns0:street1>
<ns0:street2>Suite 200</ns0:street2>
<ns0:city>Morrisville</ns0:city>
<ns0:stateOrCountry>NC</ns0:stateOrCountry>
<ns0:zipCode>27560</ns0:zipCode>
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<notificationInfo>
<personName>Robert B. Macaulay</personName>
<personPhoneNum>(305) 530-0050</personPhoneNum>
<personAddress>
<ns0:street1>Carlton Fields, P.A.</ns0:street1>
<ns0:street2>700 NW 1st Avenue</ns0:street2>
<ns0:city>Miami</ns0:city>
<ns0:stateOrCountry>FL</ns0:stateOrCountry>
<ns0:zipCode>3313</ns0:zipCode>
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<reportingPersonNoCIK>Y</reportingPersonNoCIK>
<reportingPersonName>Richard H. Davis</reportingPersonName>
<memberOfGroup>a</memberOfGroup>
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<aggregateAmountOwned>407432</aggregateAmountOwned>
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<reportingPersonName>Stephen H. McKnight</reportingPersonName>
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<commentContent>_________________&#13; (1)  The percentage is based on 16,924,880 shares of the Issuer's common stock outstanding as of October 24, 2025, as reported in the Issuer's definitive proxy statement on Schedule 14A filed on November 3, 2025, after giving effect to the Issuer's 1-for-10 reverse stock split that took effect on December 26, 2025.&#13; (2) Shares beneficially owned include (i) 12,000 shares issuable upon the exercise of warrants exercisable within 60 days; (ii) 1,500 shares held by the Stephen H. McKnight Revocable Trust, of which the reporting person is the sole trustee; and (iii) 7,500 shares held by the reporting person's adult daughter and over which the reporting person has shared voting and dispositive power. The shares references in clause (iii) had been omitted from prior filings inadvertently.</commentContent>
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<reportingPersonInfo>
<reportingPersonNoCIK>Y</reportingPersonNoCIK>
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<commentContent>_________________&#13; (1)  The percentage is based on 16,924,880 shares of the Issuer's common stock outstanding as of October 24, 2025, as reported in the Issuer's definitive proxy statement on Schedule 14A filed on November 3, 2025, after giving effect to the Issuer's 1-for-10 reverse stock split that took effect on December 26, 2025.</commentContent>
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<reportingPersonInfo>
<reportingPersonNoCIK>Y</reportingPersonNoCIK>
<reportingPersonName>William R. Greenfield</reportingPersonName>
<memberOfGroup>a</memberOfGroup>
<fundType>PF</fundType>
<legalProceedings>N</legalProceedings>
<citizenshipOrOrganization>X1</citizenshipOrOrganization>
<soleVotingPower>15000</soleVotingPower>
<sharedVotingPower>28834</sharedVotingPower>
<soleDispositivePower>15000</soleDispositivePower>
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<aggregateAmountOwned>43834</aggregateAmountOwned>
<isAggregateExcludeShares>N</isAggregateExcludeShares>
<percentOfClass>0.3</percentOfClass>
<typeOfReportingPerson>IN</typeOfReportingPerson>
<commentContent>_________________&#13; (1)  The percentage is based on 16,924,880 shares of the Issuer's common stock outstanding as of October 24, 2025, as reported in the Issuer's definitive proxy statement on Schedule 14A filed on November 3, 2025, after giving effect to the Issuer's 1-for-10 reverse stock split that took effect on December 26, 2025.&#13; (2)  The 28,834 shares are held by the Greenfield Irrevocable Family Trust, of which Mr. Greenfield's wife, Margaret Greenfield, is the sole trustee and beneficiary.</commentContent>
</reportingPersonInfo>
<reportingPersonInfo>
<reportingPersonNoCIK>Y</reportingPersonNoCIK>
<reportingPersonName>Bryce Allan Johnson</reportingPersonName>
<memberOfGroup>a</memberOfGroup>
<fundType>PF</fundType>
<legalProceedings>N</legalProceedings>
<citizenshipOrOrganization>X1</citizenshipOrOrganization>
<soleVotingPower>410086</soleVotingPower>
<sharedVotingPower>0</sharedVotingPower>
<soleDispositivePower>410086</soleDispositivePower>
<sharedDispositivePower>0</sharedDispositivePower>
<aggregateAmountOwned>410086</aggregateAmountOwned>
<isAggregateExcludeShares>N</isAggregateExcludeShares>
<percentOfClass>2.4</percentOfClass>
<typeOfReportingPerson>IN</typeOfReportingPerson>
<commentContent>_________________&#13; (1)  The percentage is based on 16,924,880 shares of the Issuer's common stock outstanding as of October 24, 2025, as reported in the Issuer's definitive proxy statement on Schedule 14A filed on November 3, 2025, after giving effect to the Issuer's 1-for-10 reverse stock split that took effect on December 26, 2025.</commentContent>
</reportingPersonInfo>
<reportingPersonInfo>
<reportingPersonNoCIK>Y</reportingPersonNoCIK>
<reportingPersonName>Ligi Investments LLLP</reportingPersonName>
<memberOfGroup>a</memberOfGroup>
<fundType>WC</fundType>
<legalProceedings>N</legalProceedings>
<citizenshipOrOrganization>FL</citizenshipOrOrganization>
<soleVotingPower>0</soleVotingPower>
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<sharedDispositivePower>48000</sharedDispositivePower>
<aggregateAmountOwned>48000</aggregateAmountOwned>
<isAggregateExcludeShares>N</isAggregateExcludeShares>
<percentOfClass>0.3</percentOfClass>
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<commentContent>_________________&#13; (1)  The percentage is based on 16,924,880 shares of the Issuer's common stock outstanding as of October 24, 2025, as reported in the Issuer's definitive proxy statement on Schedule 14A filed on November 3, 2025, after giving effect to the Issuer's 1-for-10 reverse stock split that took effect on December 26, 2025.&#13; (2)  Jennifer P. Ligeti is the Manager of General Partner of Ligi Investments LLLP and has voting and investment power over the shares owned thereby.</commentContent>
</reportingPersonInfo>
<reportingPersonInfo>
<reportingPersonNoCIK>Y</reportingPersonNoCIK>
<reportingPersonName>Kevin J. Lockwood</reportingPersonName>
<memberOfGroup>a</memberOfGroup>
<fundType>PF</fundType>
<legalProceedings>N</legalProceedings>
<citizenshipOrOrganization>X1</citizenshipOrOrganization>
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<percentOfClass>0.6</percentOfClass>
<typeOfReportingPerson>IN</typeOfReportingPerson>
<commentContent>_________________&#13; (1)  The percentage is based on 16,924,880 shares of the Issuer's common stock outstanding as of October 24, 2025, as reported in the Issuer's definitive proxy statement on Schedule 14A filed on November 3, 2025, after giving effect to the Issuer's 1-for-10 reverse stock split that took effect on December 26, 2025.</commentContent>
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<reportingPersonNoCIK>Y</reportingPersonNoCIK>
<reportingPersonName>John McClure</reportingPersonName>
<memberOfGroup>a</memberOfGroup>
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<typeOfReportingPerson>IN</typeOfReportingPerson>
<commentContent>_________________&#13; (1)  The percentage is based on 16,924,880 shares of the Issuer's common stock outstanding as of October 24, 2025, as reported in the Issuer's definitive proxy statement on Schedule 14A filed on November 3, 2025, after giving effect to the Issuer's 1-for-10 reverse stock split that took effect on December 26, 2025.&#13; (2) Shares beneficially owned include 6,500 shares held by the Georgia Marie McClure Revocable Trust dated 12/20/1996, of which the reporting person is the sole trustee.</commentContent>
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<reportingPersonInfo>
<reportingPersonNoCIK>Y</reportingPersonNoCIK>
<reportingPersonName>Stephen H. McKnight Jr.</reportingPersonName>
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<commentContent>(1)  The percentage is based on 16,924,880 shares of the Issuer's common stock outstanding as of October 24, 2025, as reported in the Issuer's definitive proxy statement on Schedule 14A filed on November 3, 2025, after giving effect to the Issuer's 1-for-10 reverse stock split that took effect on December 26, 2025.</commentContent>
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<reportingPersonNoCIK>Y</reportingPersonNoCIK>
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<commentContent>(1)  The percentage is based on 16,924,880 shares of the Issuer's common stock outstanding as of October 24, 2025, as reported in the Issuer's definitive proxy statement on Schedule 14A filed on November 3, 2025, after giving effect to the Issuer's 1-for-10 reverse stock split that took effect on December 26, 2025.</commentContent>
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<items1To7>
<item1>
<securityTitle>Common Stock, $0.001 par value per share</securityTitle>
<issuerName>374Water Inc.</issuerName>
<issuerPrincipalAddress>
<ns0:street1>100 Southcenter Court</ns0:street1>
<ns0:street2>Suite 200</ns0:street2>
<ns0:city>Morrisville</ns0:city>
<ns0:stateOrCountry>NC</ns0:stateOrCountry>
<ns0:zipCode>27560</ns0:zipCode>
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<commentText>Explanatory Note&#13; &#13; This Amendment No. 3 to the statement on beneficial ownership on Schedule 13D (this "Amendment No. 3") amends and supplements the information set forth in the Statement on Schedule 13D filed by the Reporting Persons with the SEC on December 12, 2025 (the "Original Schedule 13D"), as amended by Amendment No. 1 thereto filed on December 16, 2026 and Amendment No. 2 thereto filed on January 5, 2026 (as amended, the "Schedule 13D"). This Amendment No. 3 is being filed to reflect (i) the departure of Yaacov (Kobe) Nagar from the "group," as that term is used in Section 13(d)  of the Exchange Act and the rules thereunder, on January 22, 2026 as reported in the amendment to Mr. Nagar's Schedule 13D filed on January 26, 2026, and (ii) dissolution of the "group," as that term is used in Section 13(d)  of the Exchange Act and the rules thereunder, among the Reporting Persons on February 8, 2026. All capitalized terms contained herein but not otherwise defined shall have the meanings ascribed to such terms in the Original Schedule 13D. Except as specifically provided herein, this Amendment No. 3 does not modify any of the information previously reported in the Original Schedule 13D. This Amendment No. 3 constitutes an "exit filing" for each of the Reporting Persons except for Mr. Nagar, who has filed an amendment to his own Schedule 13D on January 26, 2026. This Amendment No. 3 is being filed late due to delays encountered with the enrollment and account authorization within the SEC's EDGAR Next System.</commentText>
</item1>
<item2>
<filingPersonName>Item 2 of the Schedule 13D is hereby amended and supplemented as follows:&#13; &#13; The Reporting Persons reported on Amendment No. 2 to the Schedule 13D filed on January 5, 2026 are no longer deemed to be a "group," as that term is used in Section 13(d)  of the Exchange Act and the rules thereunder.</filingPersonName>
</item2>
<item3/>
<item4>
<transactionPurpose>Item 4 of the Schedule 13D is hereby amended and supplemented as follows: &#13; &#13; As disclosed in Amendment No. 2 to the Schedule 13D filed by Yaacov (Kobe) Nagar on January 23, 2026, Mr. Nagar was no longer a member of the group as of January 22, 2026.&#13; &#13; On February 8, 2026, the Issuer appointed Mr. McKnight to the Board, effective February 9, 2026, to fill the vacancy created by the resignation of James Vanderhider from the Board. Mr. Vanderhider's resignation and Mr. McKnight's appointment were made in accordance with the Agreement between Mr. Nagar and the Issuer. Mr. McKnight is the third candidate that was mutually acceptable to both the Issuer and Mr. Nagar pursuant to the terms of the Agreement. Accordingly, the Reporting Persons have each determined independently that they are no longer deemed to be acting as a "group," as that term is used in Section 13(d)  of the Exchange Act and the rules thereunder.</transactionPurpose>
</item4>
<item5>
<percentageOfClassSecurities>Item 5 of the Schedule 13D is amended and restated as follows:&#13;  &#13;  (a) As a result of the developments between the Reporting Persons and the Issuer, as discussed under Item 4, the Reporting Persons are no longer deemed to be a "group," as that term is used in Section 13(d) of the Exchange Act and the rules thereunder.</percentageOfClassSecurities>
</item5>
<item6/>
<item7/>
</items1To7>
<signatureInfo>
<signaturePerson>
<signatureReportingPerson>Richard H. Davis</signatureReportingPerson>
<signatureDetails>
<signature>/s/ Richard H. Davis</signature>
<title>Richard H. Davis</title>
<date>03/05/2026</date>
</signatureDetails>
</signaturePerson>
<signaturePerson>
<signatureReportingPerson>Stephen H. McKnight</signatureReportingPerson>
<signatureDetails>
<signature>/s/ Stephen H. McKnight</signature>
<title>Stephen H. McKnight</title>
<date>03/05/2026</date>
</signatureDetails>
</signaturePerson>
<signaturePerson>
<signatureReportingPerson>Robert F. Ehrman Declaration of Trust as Amended and Restated on 10/6/2022</signatureReportingPerson>
<signatureDetails>
<signature>/s/ Marlys A. Ehrman</signature>
<title>Marlys A. Ehrman, Trustee</title>
<date>03/11/2026</date>
</signatureDetails>
</signaturePerson>
<signaturePerson>
<signatureReportingPerson>William R. Greenfield</signatureReportingPerson>
<signatureDetails>
<signature>/s/ William R. Greenfield</signature>
<title>William R. Greenfield</title>
<date>03/09/2026</date>
</signatureDetails>
</signaturePerson>
<signaturePerson>
<signatureReportingPerson>Bryce Allan Johnson</signatureReportingPerson>
<signatureDetails>
<signature>/s/ Bryce Allan Johnson</signature>
<title>Bryce Allan Johnson</title>
<date>03/11/2026</date>
</signatureDetails>
</signaturePerson>
<signaturePerson>
<signatureReportingPerson>Ligi Investments LLLP</signatureReportingPerson>
<signatureDetails>
<signature>/s/ Jennifer Ligeti</signature>
<title>Jennifer Ligeti, Manager</title>
<date>03/09/2026</date>
</signatureDetails>
</signaturePerson>
<signaturePerson>
<signatureReportingPerson>Kevin J. Lockwood</signatureReportingPerson>
<signatureDetails>
<signature>/s/ Kevin J. Lockwood</signature>
<title>Kevin J. Lockwood</title>
<date>03/05/2026</date>
</signatureDetails>
</signaturePerson>
<signaturePerson>
<signatureReportingPerson>John McClure</signatureReportingPerson>
<signatureDetails>
<signature>/s/ John McClure</signature>
<title>John McClure</title>
<date>03/09/2026</date>
</signatureDetails>
</signaturePerson>
<signaturePerson>
<signatureReportingPerson>Stephen H. McKnight Jr.</signatureReportingPerson>
<signatureDetails>
<signature>/s/ Stephen H. McKnight Jr.</signature>
<title>Stephen H. McKnight Jr.</title>
<date>03/11/2026</date>
</signatureDetails>
</signaturePerson>
<signaturePerson>
<signatureReportingPerson>Christopher L. Tucker</signatureReportingPerson>
<signatureDetails>
<signature>/s/ Christopher L. Tucker</signature>
<title>Christopher L. Tucker</title>
<date>03/06/2026</date>
</signatureDetails>
</signaturePerson>
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