Russell Kline - Aug 28, 2025 Form 4 Insider Report for 374Water Inc. (SCWO)

Role: Chief Financial Officer
Signature: /s/ Russell Kline
Stock symbol: SCWO
Transactions as of: Aug 28, 2025
Transactions value $: $0
Form type: 4
Date filed: 9/2/2025, 09:41 PM
Previous filing: Aug 25, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Russell Kline	Chief Financial Officer	C/O 374 WATER INC. 100 SOUTHCENTER COURT, SUITE 200, MORRISVILLE	/s/ Russell Kline	2025-09-02	0002049257

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SCWO	Common Stock (restricted stock unit)	Award	$0	+250K	+62.71%	$0.00	649K	Aug 28, 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The restricted stock unit vests in equal monthly installments over 36 months, on the last day of each month, beginning on March 31, 2025, subject to the Reporting Person's continuous service through each vesting date.