Tax-withholding share disposition by Aqua Metals (AQMS) chief operations exec

Rhea-AI Filing Summary

Aqua Metals, Inc. reported that Chief Engineering and Operating Officer Benjamin S. Taecker had 1,006 shares of common stock withheld on February 24, 2026 to cover taxes from the vesting of a previously granted restricted share award at $4.76 per share. After this tax-withholding disposition, he directly owns 58,780 shares, including 28,170 unvested RSUs that are not yet deliverable.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Taecker Benjamin S.

Role Chief Eng and Opr Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	1,006	$4.76	$5K

Holdings After Transaction: Common Stock — 58,780 shares (Direct)

Footnotes (1)

1. Represents the number of shares withheld and returned to the plan to cover the tax liability of the February 24, 2026 vesting of a previously reported restricted share grant represented in Table I. Includes 28,170 shares underlying restricted stock units ("RSUs") that are not yet vested and deliverable.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Taecker Benjamin S.

(Last) (First) (Middle)

5370 KIETZKE LN

SUITE 201

(Street)

RENO NV 89511

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Aqua Metals, Inc. [ AQMS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Eng and Opr Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/24/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/24/2026		F(1)		1,006	D	$4.76	58,780(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents the number of shares withheld and returned to the plan to cover the tax liability of the February 24, 2026 vesting of a previously reported restricted share grant represented in Table I.

2. Includes 28,170 shares underlying restricted stock units ("RSUs") that are not yet vested and deliverable.

	/s/ Eric West, by power of attorney	02/26/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Aqua Metals (AQMS) report for Benjamin S. Taecker?

Aqua Metals reported that executive Benjamin S. Taecker had 1,006 common shares withheld to cover taxes from a restricted share vesting. This was a tax-withholding disposition, not an open-market sale, tied to a previously reported restricted stock grant vesting on February 24, 2026.

How many Aqua Metals (AQMS) shares were involved and at what price?

The transaction involved 1,006 shares of Aqua Metals common stock at $4.76 per share. These shares were withheld and returned to the company’s equity plan to satisfy tax obligations arising from the February 24, 2026 vesting of a prior restricted share grant.

How many Aqua Metals (AQMS) shares does Benjamin S. Taecker own after this transaction?

After the tax-withholding disposition, Benjamin S. Taecker directly owns 58,780 Aqua Metals common shares. This figure includes 28,170 shares underlying restricted stock units that have been granted but are not yet vested or deliverable, according to the disclosed footnote information.

Was the Aqua Metals (AQMS) Form 4 transaction a market sale of shares?

No, the Form 4 shows a tax-withholding disposition, not a market sale. Shares were withheld and returned to the company’s plan to cover Taecker’s tax liability from the vesting of a previously reported restricted share award on February 24, 2026.

What type of transaction code appears in the Aqua Metals (AQMS) Form 4?

The filing uses transaction code “F,” indicating payment of exercise price or tax liability by delivering securities. In this case, 1,006 shares were withheld from Benjamin S. Taecker’s award to satisfy tax obligations related to the vesting restricted share grant.