374Water director reports stock and warrant holdings

374Water Inc. director Stephen H. McKnight filed an initial Form 3 reporting his ownership in the company.

Rhea-AI Filing Summary

374Water Inc. director Stephen H. McKnight filed an initial Form 3 reporting his ownership in the company. He reported direct ownership of 190,000 shares of common stock and 12,000 warrants, each representing a right to buy additional shares. He also reported indirect ownership of 1,500 shares of common stock held by the Stephen H. McKnight Revocable Trust, where he serves as sole trustee. The filing does not show any new purchases or sales, only the amounts owned after the transactions reported.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider McKnight Stephen H.

Role Director

Type	Security	Shares	Price	Value
holding	Warrants (right to buy)	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Warrants (right to buy) — 12,000 contracts (Direct); Common Stock — 190,000 shares (Direct); Common Stock — 1,500 shares (Indirect, By the Stephen H. McKnight Revocable Trust, of which the Reporting Person is the sole trustee.)

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does Stephen H. McKnight's Form 3 for 374Water Inc. (SCWO) report?

The Form 3 reports Stephen H. McKnight’s existing ownership in 374Water Inc., including common shares and warrants. It is an initial statement of beneficial ownership as he serves as a director of the company.

How many 374Water Inc. (SCWO) common shares does Stephen H. McKnight directly own?

Stephen H. McKnight directly owns 190,000 shares of 374Water Inc. common stock. This position is reported as direct ownership, reflecting shares held in his own name rather than through another entity or trust.

What warrant holdings did Stephen H. McKnight report in 374Water Inc. (SCWO)?

He reported holding 12,000 warrants in 374Water Inc., described as warrants representing the right to buy shares. The Form 3 lists these as directly owned, in addition to his common stock holdings.

What indirect 374Water Inc. (SCWO) ownership does Stephen H. McKnight report?

He reports indirect ownership of 1,500 shares of common stock held by the Stephen H. McKnight Revocable Trust. He is the sole trustee of this trust, so these shares are reported as indirectly owned.

Does Stephen H. McKnight's Form 3 for 374Water Inc. (SCWO) show any insider buying or selling?

The Form 3 does not show insider buying or selling activity. It only lists the number of common shares and warrants that Stephen H. McKnight, directly and through a trust, owned as of the reported date.

What is the significance of direct vs. indirect ownership in the 374Water Inc. (SCWO) Form 3?

Direct ownership reflects securities held in Stephen H. McKnight’s own name, while indirect ownership reflects securities held through another entity, such as his revocable trust. Both categories are reported to show his total beneficial interest.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 02/27/2026 - 05:07 PM EST Learn about SEC filing dates

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

McKnight Stephen H.

(Last) (First) (Middle)

C/O 374WATER INC.

100 SOUTHCENTER COURT, SUITE 200

(Street)

MORRISVILLE NC 27560

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
02/09/2026

3. Issuer Name and Ticker or Trading Symbol
374Water Inc. [ SCWO ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	190,000	D
Common Stock	1,500	I	By the Stephen H. McKnight Revocable Trust, of which the Reporting Person is the sole trustee.

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Warrants (right to buy)	11/18/2024	11/17/2029	Common Stock	12,000	$1.9352	D

Explanation of Responses:

Remarks:

Exhibit 24.1 Power of Attorney

	/s/ Stephen H. McKnight	02/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.