SEC Form 4 · accession 0001654954-26-006549
374Water Inc. · SCWO
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Charles Maurice Weiser
Officer — Chief Financial Officer · Director
Period of report
Jul 1, 2026
Accepted (ET)
Jul 8, 2026 · 4:34 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0000933972
Table I — non-derivative securities
No Table I lines on this filing.
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option (right to buy)F1 | $2.16 | Jul 1, 2026 | A | 150,000 | A | Jul 1, 2026 | Jul 1, 2036 | Common Stock | 150,000 | 150,000 | D |
| Restricted Stock UnitsF2 | $0.00 | Jul 1, 2026 | A | 125,000 | A | Jul 1, 2026 | Jul 1, 2029 | Common Stock | 125,000 | 125,000 | D |
Explanation of responses
- F1The stock option was granted pursuant to the 374Water Inc. 2021 Equity Incentive Plan, as amended. The option vests as follows: 25% (37,500 shares) on the grant date (July 1, 2026), and the remaining 75% (112,500 shares) in 12 equal quarterly installments of 9,375 shares commencing October 1, 2026 (subject to a rounding adjustment on the final installment). The exercise price equals the closing price of the Issuer's common stock on the Nasdaq Capital Market on the date of grant.
- F2The restricted stock unit award was granted pursuant to the 374Water Inc. 2021 Equity Incentive Plan, as amended. The RSUs vest as follows: 25% (31,250 shares) on the grant date (July 1, 2026), and the remaining 75% (93,750 shares) in 12 equal quarterly installments of 7,813 shares commencing October 1, 2026 (subject to a rounding adjustment on the final installment to account for the aggregate total of 93,750 shares).