SEC Insider Transactions from Russell Kline.

Last updated: 2026-03-14 11:41 UTC | Total transactions: 8

Russell Kline, CFO of 374Water Inc. ($SCWO), made four open market purchases of common shares in the past year, totaling $16,617. His most recent buy occurred on December 16, 2025. These insider buys rank 3,976th out of nearly 5,000 individuals, well below the average purchase amount of $1.46 million across 3.29 transactions. Kline reported no open market sales in the last 365 days.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
Dec. 16, 2025 374Water Inc. $SCWO Russell Kline Chief Financial Officer P Common Stock 20000 $0.22 668,642.0000 169,248,799 3.08% 0.01%
Oct. 9, 2025 374Water Inc. $SCWO Russell Kline Chief Financial Officer A Stock options (right to buy) 500000 $0.00 808,642.0000 144,576,713 162.00% 0.35%
Aug. 28, 2025 374Water Inc. $SCWO Russell Kline Chief Financial Officer A Common Stock (restricted stock unit) 250000 $0.00 648,642.0000 144,576,713 62.71% 0.17%
Aug. 21, 2025 374Water Inc. $SCWO Russell Kline Chief Financial Officer P Common Stock 15000 $0.25 383,642.0000 144,576,713 4.07% 0.01%
Aug. 22, 2025 374Water Inc. $SCWO Russell Kline Chief Financial Officer P Common Stock 15000 $0.25 398,642.0000 144,576,713 3.91% 0.01%
Aug. 20, 2025 374Water Inc. $SCWO Russell Kline Chief Financial Officer P Common Stock 20000 $0.24 368,642.0000 144,576,713 5.74% 0.01%
Jan. 15, 2025 374Water Inc. $SCWO Russell Kline Chief Financial Officer A Common Stock (restricted stock units) 308642 $0.00 348,642.0000 0 771.61% 0.00%
Jan. 15, 2025 374Water Inc. $SCWO Russell Kline Chief Financial Officer A Stock options (right to buy) 308642 $0.00 308,642.0000 0 9999.99% 0.00%