Chuck Maurice Weiser - 01 Jul 2026 Form 4 Insider Report for 374Water Inc. (SCWO)

Reporting relationship: Chief Financial Officer, Director
Issuer ticker: SCWO
Reported as of: 01 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 08 Jul 2026, 16:34:49 UTC
Prior SEC filing: 30 Jan 2026
Source filing: View source filing
Reporting owner signature: /s/ Chuck Maurice Weiser

Key filing fact

Chuck Maurice Weiser filed Form 4 for 374Water Inc. (SCWO) on 08 Jul 2026.

Key facts

This page summarizes Chuck Maurice Weiser's Form 4 filing for 374Water Inc. (SCWO).
2 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 08 Jul 2026, 16:34.

Change

Previous filing in this sequence was filed on 30 Jan 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002107970 Primary reporting owner

Weiser Charles Maurice

Relationship: Chief Financial Officer, Director
Address: C/O 374WATER INC., 100 SOUTHCENTER COURT SUITE 200, MORRISVILLE
Signature: /s/ Chuck Maurice Weiser
Signature date: 08 Jul 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

SCWO transaction Derivative

Stock Option (right to buy)

Award

Transaction value
Shares: +150,000
Change %
Price: $0.000000^*
Shares after: 150,000
Date: 01 Jul 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 150,000
Exercise price: $2.16
Footnotes: F1

SCWO transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +125,000
Change %
Price: $0.000000^*
Shares after: 125,000
Date: 01 Jul 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 125,000
Exercise price: $0.000000
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

The 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.

Footnote F2

The 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).