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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT PURSUANT

TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (date of earliest event reported): October 29, 2026

374WATER INC.

(Exact Name of Registrant as Specified in Charter)

Delaware		000-27866		88-0271109
(State of Incorporation)		(Commission File No.)		(I.R.S. Employer Identification No.)

100 Southcenter Court, Suite 200

Morrisville, NC 27560

(Address of Principal Executive Offices)(Zip Code)

(440) 601-9677

(Registrant’s Telephone Number, Including Area Code)

N/A

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading

Symbol(s)

Name of each exchange on which

registered

Common Stock, par value $0.0001

SCWO

The Nasdaq Capital Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 7.01 Regulation FD Disclosure.

On October 29, 2026, 374Water Inc. (the “Company”) began utilizing a new investor presentation (the “Investor Presentation”). A copy of the Investor Presentation is furnished as Exhibit 99.1 to this Current Report on Form 8-K (this “Current Report”) and incorporated by reference.

On October 29, 2026, the Company issued a press release regarding the Investor Presentation (the “Press Release”). A copy of the Press Release is furnished as Exhibit 99.2 to this Current Report and incorporated by reference.

By filing this Current Report and furnishing the information contained herein, the Company makes no admission as to the materiality of any information in this report that is required to be disclosed solely by reason of Regulation FD. The information furnished in Item 7.01 of this Current Report, including Exhibit 99.1 and Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any filing made by the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.		Description
99.1		Investor Presentation of 374Water Inc., dated October 2026
99.2		Press Release of 374Water Inc., dated October 29, 2026.
104		Cover Page Interactive Data File (formatted as Inline XBRL)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Company has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	374WATER INC.

Dated: October 29, 2026	By:	/s/ Danny Bogar
	Name:	Danny Bogar
	Title:	President and Chief Executive Officer

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