374water (SCWO)CFO bought ~$4.4K

~$4.4K

Approx. value · 20K sh @ $0.22

669K

Holds after · shares reported

Traded

Dec 16, 2025

Filed

Dec 18, 2025

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Oct 8, 2025Company filing · Form 8-K · Executive changeChanged a top executive or board member“On October 20, 2025, the Company and Mr. Mandel entered into a Separation and Release of Claims Agreement (the “Separation Agreement”) in connection with Mr. Mandel stepping down from his position as General Counsel of the Company on October 8, 2025 (the “Separation Date”).”
2. Oct 16, 2025Insider10% owner sold ~$44K of SCWO shares in the open market
3. Oct 17, 2025Insider10% owner sold ~$56K of SCWO shares in the open market
4. Oct 20, 2025Insider10% owner sold ~$5.6K of SCWO shares in the open market
5. Oct 21, 2025Insider10% owner sold ~$120K of SCWO shares in the open market
6. Oct 22, 2025Insider · 1 personInsiders: 2 sales (~$39K)
7. Oct 23, 2025Insider10% owner sold ~$205K of SCWO shares in the open market
8. Nov 12, 2025Company filing · Form 8-K · ResultsReported its results
9. Dec 14, 2025Company filing · Form 8-K · Material agreement, Executive changeChanged a top executive or board member, and signed an important agreement“The information set forth in Item 1.01 is incorporated herein by reference.”
10. Dec 15, 2025Company filing · Form 8-K · Shareholder rights, Bylaws or charterChanged the rights of its shareholders, and changed its bylaws, charter or fiscal year (and 1 more item)
11. Dec 16, 2025 · this disclosureInsider · 13 days before an 8-KCFO purchased ~$4.4K of SCWO shares in the open market

What came next

1. Dec 16, 2025Insider · 13 days before an 8-KCEO purchased ~$104K of SCWO shares in the open market
2. Dec 29, 2025Company filing · Form 8-K · Executive changeChanged a top executive or board member“On December 29, 2025, 374Water Inc. (the “ Company ”) appointed Charles Weiser to the Company’s Board of Directors (the “ Board ”), effective December 29, 2025.”
3. Jan 5, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“On January 5, 2026, Buddie Joe Penn informed the Board that he will resign from his position as a member of the Board of Directors (the “ Board ”) of 374Water Inc. (the “ Company ”), effective January 5, 2026.”
4. Jan 21, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“On January 21, 2026, Mr. Stephen J. Jones, a member of the Board of Directors (the “ Board ”) of 374Water Inc. (the “ Company ”), notified the Board of his decision to resign from the Board.”
5. Feb 4, 2026Company filing · Form 8-K · Material agreement, Listing noticeReceived a notice from its stock exchange, and changed a top executive or board member (and 1 more item)“On February 8, 2026, the Company appointed Stephen McKnight to the Board, effective February 9, 2026, to fill the vacancy created by Mr. Vanderhider’s resignation.”
6. Feb 4, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“of Certain Officers. 374Water Inc. (the “ Company ”) filed a Current Report on Form 8-K on February 9, 2026 (the “ Form 8-K ”) to report, among other things, the appointment of Stephen McKnight to the Company’s Board of Directors (the “ Board ”).”
7. Feb 23, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“On February 23, 2026, 374Water Inc. (the “ Company ”) appointed Danny Bogar as the Company’s President and Chief Executive Officer, effective as of February 23, 2026.”
8. Mar 2, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“On March 2, 2026, 374Water Inc. (the “ Company ”) appointed Adrienne Anderson as its Interim Chief Financial Officer and designated her as principal financial officer and principal accounting officer of the Company, effective as of March 2, 2026.”
9. Mar 10, 2026Company filing · Form 8-K · Results, Reg FDReported its results, and shared information with investors
10. Mar 31, 2026Company filing · Form 8-K · ResultsReported its results
11. Apr 10, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“On April 10, 2026, 374Water Inc. (the “ Company ”) appointed Richard H. Davis to the Company’s Board of Directors (the “ Board ”), effective immediately. Mr. Davis, age 69, previously served as a director on the Board from February 2008 to June 10, 2025.”

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for 374water

OQRO holds no insider, Congress, fund or contract record for 374water dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its SCWO page.

Other recent filings by Kline Russell, Chief Financial Officer

• SEC Form 4 at 374water (SCWO)Aug 25, 2025
• SEC Form 4 at 374water (SCWO)Aug 25, 2025
• SEC Form 4 at 374water (SCWO)Aug 21, 2025

The full history of Kline Russell, Chief Financial Officer is on the profile page.

How this filing works

• SEC Form 4
• Open-market purchase
• Rule 10b5-1 trading plans

Other disclosures at 374water

• SEC Form 4Jun 15, 2026
• SEC Form 4Jun 15, 2026
• SEC Form 4Dec 17, 2025
• SEC Form 4Oct 24, 2025
• SEC Form 4Oct 24, 2025
• SEC Form 4Oct 22, 2025

Everything OQRO holds on this company is on its SCWO page.