374Water Inc. SEC Filings

374Water Inc. reported an insider stock purchase by its interim CEO and director. On 12/16/2025, a reporting person serving as both a director and Interim CEO acquired 450,000 shares of 374Water Inc. common stock in an open market transaction coded "P" for purchase.

The shares were bought at a price of $0.2311 per share. After this transaction, the reporting person beneficially owned a total of 1,055,723 common shares, held directly. The filing is presented as a single‑person Form 4, highlighting this one notable equity purchase and confirming direct ownership status following the trade.

374Water Inc. is implementing a 1-for-10 reverse stock split of its common stock, effective at 12:01 a.m. Eastern Time on December 26, 2025. Every ten shares held immediately before the effective time will be combined into one share, with no fractional shares issued.

Stockholders entitled to a fraction of a share will instead receive a cash payment based on the Nasdaq closing price on the effective date. The split will proportionally reduce outstanding shares, equity plan share pools, and shares underlying stock options, restricted stock units and warrants, while increasing their per-share exercise prices. Authorized capital will remain at 1,050,000,000 shares, including 1,000,000,000 common and 50,000,000 preferred shares.

The post-split common stock will continue trading on The Nasdaq Capital Market under the symbol SCWO beginning December 26, 2025, with a new CUSIP of 88583P 203 and an unchanged par value of $0.0001 per share. Stockholders previously approved the reverse split at a special meeting.

374Water Inc. entered into a letter agreement with Yaacov (Kobe) Nagar that links Board changes and voting support to a planned reverse stock split.

Director Deanna Rene Estes will resign after stockholders approve and the inspector of elections certifies the Reverse Stock Split Proposal at the December 15, 2025 Special Meeting. The company will identify three mutually acceptable Board candidates, after which BJ Penn and James Vanderhider have agreed to resign.

If stockholders approve the Reverse Stock Split Proposal, the reverse split will be effected at a 1-for-10 share ratio. Nagar agreed to appear in person or by proxy at the Special Meeting and vote all beneficially owned common shares in line with the Board’s recommendations on all proposals, under an agreement that remains in effect until the third new director is appointed or certain breach conditions occur.

374Water Inc. is registering up to $100,000,000 of primary securities under a shelf registration, including common stock, preferred stock, debt securities and warrants that may be offered over time in one or more transactions.

Within this total, a dedicated sales agreement prospectus permits at-the-market issuances of up to $50,000,000 of common stock through Lake Street Capital Market, LLC, replacing a prior $15,100,000 sales agreement under which $5,789,438 of capacity remained. Any net proceeds may be used for working capital, general corporate purposes, and capital expenditures.

The prospectus emphasizes that investing in these securities involves a high degree of risk and directs readers to detailed risk disclosures, including factors such as insufficient capital, “substantial doubts” about the ability to continue as a going concern, competition, regulatory changes, supply chain issues and technology-related uncertainties.

374Water Inc. (SCWO) filed a shelf registration statement on Form S-3 to offer, issue and sell up to $100,000,000 of securities from time to time, including common stock, preferred stock, debt securities and/or warrants.

The filing also includes a sales agreement prospectus for an at‑the‑market offering of up to $50,000,000 of common stock through Lake Street Capital Markets, LLC as sales agent; this amount is included within the $100,000,000 shelf. The Sales Agreement replaces a prior sales agreement prospectus under which $5,789,438 of common stock remained available immediately prior to filing. Net proceeds, if any, are intended for working capital and general corporate purposes.

The company’s common stock trades on Nasdaq as “SCWO”. On November 10, 2025, the last reported sale price was $0.38 per share.

374Water Inc. (SCWO) filed a Form S-8 registering 12,150,000 additional shares of Common Stock for future issuance under its 2021 Equity Incentive Plan. Stockholders approved the plan amendment at the 2025 annual meeting, increasing the shares available for equity awards to employees, officers, and directors.

The filing uses General Instruction E to Form S-8 and incorporates by reference the prior Form S-8 for the plan filed on October 2, 2024 (File No. 333-282471). This registration relates solely to additional securities of the same class for the existing plan and supports ongoing equity compensation grants.

374Water (SCWO) reported Q3 2025 results and flagged going concern risk. Revenue rose to $760,417 in the quarter, driven mostly by service work, with year‑to‑date revenue at $1,898,484. Gross margin for Q3 was $212,632, but higher operating costs led to a quarterly net loss of $4,349,024 and a nine‑month net loss of $12,627,886.

Cash fell to $933,328 from $10,651,644 at year‑end, and working capital was $1,904,259. Management disclosed “substantial doubt” about continuing as a going concern and said additional financing is needed. The company sold 7,804,130 shares via its $15.1 million ATM program for $1,916,000 net in the first nine months, then sold 14,987,668 more shares after quarter‑end for $6,991,004 net. It also issued a $600,000 short‑term secured note due January 2, 2026, and repurchased 6,000,000 warrants for $649,980.

Operationally, the City of Orlando demo contract totals $812,000, with one milestone recognized at $270,667. Unbilled receivables were $2,155,622. Shares outstanding were 154,261,131 at September 30, 2025 and 169,248,799 as of November 12, 2025.

374Water Inc. filed a current report to note that it released a press release with its financial results for the quarter ended September 30, 2025, along with other business information. The press release, dated November 12, 2025, is furnished as Exhibit 99.1.

The company states that this information, including Exhibit 99.1, is being furnished under the securities laws and is not deemed filed or incorporated by reference into other securities filings unless specifically referenced. The report is signed by Stephen J. Jones, the company’s Interim President and Chief Executive Officer.

374Water Inc. called a virtual Special Meeting on December 15, 2025 at 9:00 a.m. ET to seek stockholder approval to amend its Certificate of Incorporation to effect a reverse stock split at a ratio between 1-for-8 and 1-for-20, at the board’s discretion, any time on or before December 26, 2025. A separate proposal would allow the meeting to be adjourned to solicit additional proxies if needed.

The company states the reverse split aims to help regain compliance with Nasdaq’s $1.00 minimum bid requirement, with a compliance deadline of January 12, 2026. If implemented, the split would reduce issued and outstanding shares proportionally and will not change authorized shares or par value. Fractional shares would be settled in cash based on the closing price on the effective date.

The board retains discretion to select the final ratio or abandon the action. As of the October 24, 2025 record date, 169,248,799 shares of common stock were outstanding. Risks cited include potential post-split volatility, liquidity effects, and immediate delisting risk if the price falls below $1.00 within the specified post-split periods.