X0508 4 2025-10-16 false 0000933972 374Water Inc. SCWO 0001861377 Nagar Yaacov 600 PARK OFFICES SUITE 300 DURHAM NC 27713 true false Common Stock 2025-10-16 4 S false 85419 0.5126 D 33109038 D Common Stock 2025-10-17 4 S false 131680 0.4230 D 32977358 D This transaction was executed in multiple trades at prices ranging from $0.5108 to $0.5140 The price set forth above reflects the weighted-average price per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected. This transaction was executed in multiple trades at prices ranging from $0.4200 to $0.4383 The price set forth above reflects the weighted-average price per share. /s/ YAACOV NAGAR 2025-10-20