Aqua Metals (AQMS) officer has 715 shares withheld for tax on RSU vesting

Rhea-AI Filing Summary

Aqua Metals, Inc. Chief Eng and Opr Officer Benjamin S. Taecker reported a tax-withholding disposition of 715 shares of common stock at $3.92 per share. These shares were withheld and returned to the company plan to cover taxes on an April 13, 2026 vesting of a previously granted restricted share award, rather than sold on the open market. Following this transaction, he directly holds 58,065 shares of common stock, which include 26,482 shares underlying restricted stock units that are not yet vested and 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	715	$3.92	$3K

Holdings After Transaction: Common Stock — 58,065 shares (Direct)

Footnotes (1)

1. Represents the number of shares withheld and returned to the plan to cover the tax liability of the April 13, 2026 vesting of a previously reported restricted share grant represented in Table I. Includes 26,482 shares underlying restricted stock units ("RSUs") that are not yet vested and deliverable.

Key Figures

Tax-withheld shares: 715 shares Withholding price: $3.92 per share Shares held after transaction: 58,065 shares +1 more

4 metrics

Tax-withheld shares 715 shares Withheld and returned to plan to cover tax liability on April 13, 2026 vesting

Withholding price $3.92 per share Value used for 715-share tax-withholding disposition

Shares held after transaction 58,065 shares Direct common stock holdings following tax-withholding transaction

Unvested RSUs included 26,482 shares Shares underlying restricted stock units not yet vested and deliverable

Key Terms

tax liability, restricted share grant, restricted stock units ("RSUs"), withheld and returned to the plan

4 terms

tax liability financial

"to cover the tax liability of the April 13, 2026 vesting"

restricted share grant financial

"vesting of a previously reported restricted share grant represented in Table I"

restricted stock units ("RSUs") financial

"Includes 26,482 shares underlying restricted stock units ("RSUs") that are not yet vested"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

withheld and returned to the plan financial

"Represents the number of shares withheld and returned to the plan to cover the tax liability"

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 NEVADA 89511

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/13/2026

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

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

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

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	04/13/2026		F(1)		715	D	$3.92	58,065(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 April 13, 2026 vesting of a previously reported restricted share grant represented in Table I.

2. Includes 26,482 shares underlying restricted stock units ("RSUs") that are not yet vested and deliverable.

	/s/ Eric West, by power of attorney	04/15/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

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

Aqua Metals reported that executive Benjamin S. Taecker had 715 shares of common stock withheld to cover tax liabilities. The shares were returned to the company plan in connection with the April 13, 2026 vesting of a previously granted restricted share award.

Was the Aqua Metals (AQMS) Form 4 transaction an open-market sale?

No, the Form 4 shows a tax-withholding disposition, not an open-market sale. 715 shares were withheld and returned to the company plan to satisfy tax liabilities arising from the vesting of a previously reported restricted share grant on April 13, 2026.

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

After the reported tax-withholding transaction, Benjamin S. Taecker directly holds 58,065 shares of Aqua Metals common stock. This amount includes 26,482 shares underlying restricted stock units that are not yet vested and therefore are not currently deliverable as common shares.

What does the 715-share tax withholding mean for Aqua Metals (AQMS) investors?

The 715-share withholding reflects routine tax handling for vested equity awards, not a discretionary sale. Shares were returned to the plan to cover Taecker’s tax liability on a vesting event and do not indicate a change in his investment view of Aqua Metals.

What are the unvested restricted stock units mentioned in the Aqua Metals (AQMS) Form 4?

The Form 4 notes that Taecker’s position includes 26,482 shares underlying restricted stock units. These RSUs are equity awards that have been granted but are not yet vested or deliverable as common stock until future vesting conditions are met.