Kline Russell

CIK: 0002049257

Transaction Breakdown

Open Market Buys (P)4 (57.1%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)3 (42.9%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

SCWO

374Water Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (7 total)

SCWO
374Water Inc.
Dec 16, 2025
Purchase(P)
Direct
20K shares at avg. $0.22$4K
SCWO
374Water Inc.
Oct 9, 2025
Award(A)
Stock options (right to buy)
Direct
500K shares-
SCWO
374Water Inc.
Aug 28, 2025
Award(A)
Direct
250K shares-
SCWO
374Water Inc.
Aug 22, 2025
Purchase(P)
Direct
15K shares at avg. $0.25$4K
SCWO
374Water Inc.
Aug 21, 2025
Purchase(P)
Direct
15K shares at avg. $0.25$4K
SCWO
374Water Inc.
Aug 20, 2025
Purchase(P)
Direct
20K shares at avg. $0.24$5K
SCWO
374Water Inc.
Jan 15, 2025
Award(A)
Direct
308.6K shares-

		Type	Shares	Price		Ownership
Dec 16, 2025	SCWO 374Water Inc.	Purchase(P)	20,000	$0.22	$4,400	Direct
Oct 9, 2025	SCWO 374Water Inc.	Award(A) Stock options (right to buy)	500,000	-	-	Direct
Aug 28, 2025	SCWO 374Water Inc.	Award(A)	250,000	-	-	Direct
Aug 22, 2025	SCWO 374Water Inc.	Purchase(P)	15,000	$0.25	$3,744	Direct
Aug 21, 2025	SCWO 374Water Inc.	Purchase(P)	15,000	$0.25	$3,693	Direct
Aug 20, 2025	SCWO 374Water Inc.	Purchase(P)	20,000	$0.24	$4,780	Direct
Jan 15, 2025	SCWO 374Water Inc.	Award(A)	308,642	-	$0	Direct

1-7 of 7 transactions

About Russell Kline

Russell Kline (SEC CIK 0002049257) files insider reports with the SEC as Chief Financial Officer of 374Water Inc. (SCWO).

Signal8 holds 7 ownership filings by Russell Kline (1 Form 3, 6 Form 4), filed between Dec 26, 2024 and Dec 18, 2025. Those filings report 7 transactions, from Jan 15, 2025 to Dec 16, 2025. Signal8's Form 4 history starts in Sep 2024.

The business address on Russell Kline's filings is in DURHAM, NC.

Recent filings by Russell Kline

Dec 16, 2025: Open-market purchase of SCWO shares (Form 4, code P).
Oct 9, 2025: Grant or award of SCWO derivative securities (Form 4, code A).
Aug 28, 2025: Grant or award of SCWO shares (Form 4, code A).
Aug 22, 2025: Open-market purchase of SCWO shares (Form 4, code P).
Aug 21, 2025: Open-market purchase of SCWO shares (Form 4, code P).

Other insiders filing for 374Water Inc. (SCWO)

Weiser Charles Maurice, Chief Financial Officer
Meyers Brad Ian, Chief Operating Officer
Nagar Yaacov, 10% Owner
BOGAR DANIEL T, President / CEO
McKnight Stephen H., Director
Jones Stephen J, Director

How to read Form 4 transaction codes