Nasdaq · CIK 0001621832
AQMS Aqua Metals, Inc.
Insider trading from SEC Form 4. Last filing May 20, 2026.
Aqua Metals, Inc. (AQMS) has 47 SEC Form 4 filings on file from 8 insiders, the latest filed on May 20, 2026. No insider bought or sold on the open market in the last 90 days; rows filed in that time are grants, exercises, tax withholding and other transactions that carry no view on the price.
2 Form 144 notices of planned sales are on file, the latest filed Jun 4, 2025.
Last 90 days
Signals
Open-market buys and sells at Aqua Metals, Inc., scored.
Planned sales
Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales
| Filed | Seller | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Jun 4, 2025 | Zhang Peifang Director | 32,855 0.37% of outstanding | $26k | Jun 4, 2025 | $7,737 |
| Jun 2, 2025 | Zhang Peifang Director | 9,750 0.11% of outstanding | $7,800 | Jun 2, 2025 | none |
Transactions
The newest 50 of 71 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| May 19, 2026 | Eric West Chief Financial Officer | FTax withholding Common Stock | -721 | $3.91 | $2,819 | 64,337 | May 20, 2026 |
| Apr 13, 2026 | Benjamin S. Taecker Chief Eng and Opr Officer | FTax withholding Common Stock | -715 | $3.92 | $2,803 | 58,065 | Apr 15, 2026 |
| Apr 13, 2026 | Eric West Chief Financial Officer | FTax withholding Common Stock | -863 | $3.92 | $3,383 | 65,058 | Apr 15, 2026 |
| Apr 13, 2026 | Stephen Cotton Chief Executive Officer | FTax withholding Common Stock | -2,352 | $3.92 | $9,220 | 219,673 | Apr 15, 2026 |
| Feb 24, 2026 | Eric West Chief Financial Officer | FTax withholding Common Stock | -1,214 | $4.76 | $5,779 | 65,921 | Feb 26, 2026 |
| Feb 24, 2026 | Benjamin S. Taecker Chief Eng and Opr Officer | FTax withholding Common Stock | -1,006 | $4.76 | $4,789 | 58,780 | Feb 26, 2026 |
| Feb 24, 2026 | Stephen Cotton Chief Executive Officer | FTax withholding Common Stock | -3,307 | $4.76 | $16k | 222,025 | Feb 26, 2026 |
| Feb 13, 2026 | Benjamin S. Taecker Chief Eng and Opr Officer | AGrant or award Common Stock | +23,306 | $4.72 | $110k | 59,786 | Feb 17, 2026 |
| Feb 13, 2026 | Stephen Cotton Chief Executive Officer | AGrant or award Common Stock | +79,873 | $4.72 | $377k | 225,332 | Feb 17, 2026 |
| Feb 13, 2026 | Eric West Chief Financial Officer | AGrant or award Common Stock | +28,390 | $4.72 | $134k | 67,135 | Feb 17, 2026 |
| Jan 7, 2026 | Benjamin S. Taecker Chief Eng and Opr Officer | DDisposition to issuer Common Stock | -13 | $0.00 | $0 | 36,480 | Jan 9, 2026 |
| Jan 7, 2026 | Stephen Cotton Chief Executive Officer | DDisposition to issuer Common Stock | -2,100 | $0.00 | $0 | 145,459 | Jan 9, 2026 |
| Jan 7, 2026 | Benjamin S. Taecker Chief Eng and Opr Officer | DDisposition to issuer Performance Share Unitsderivative | -443 | $0.00 | $0 | 0 | Jan 9, 2026 |
| Jan 7, 2026 | Stephen Cotton Chief Executive Officer | DDisposition to issuer Performance Share Unitsderivative | -1,510 | $0.00 | $0 | 0 | Jan 9, 2026 |
| Jan 7, 2026 | Benjamin S. Taecker Chief Eng and Opr Officer | DDisposition to issuer Performance Share Unitsderivative | -443 | $0.00 | $0 | 0 | Jan 9, 2026 |
| Jan 7, 2026 | Stephen Cotton Chief Executive Officer | DDisposition to issuer Performance Share Unitsderivative | -1,510 | $0.00 | $0 | 0 | Jan 9, 2026 |
| Jan 7, 2026 | Benjamin S. Taecker Chief Eng and Opr Officer | DDisposition to issuer Performance Share Unitsderivative | -443 | $0.00 | $0 | 0 | Jan 9, 2026 |
| Jan 7, 2026 | Stephen Cotton Chief Executive Officer | DDisposition to issuer Performance Share Unitsderivative | -1,510 | $0.00 | $0 | 0 | Jan 9, 2026 |
| Jan 7, 2026 | Benjamin S. Taecker Chief Eng and Opr Officer | DDisposition to issuer Performance Share Unitsderivative | -1,329 | $0.00 | $0 | 0 | Jan 9, 2026 |
| Jan 7, 2026 | Stephen Cotton Chief Executive Officer | DDisposition to issuer Performance Share Unitsderivative | -4,530 | $0.00 | $0 | 0 | Jan 9, 2026 |
| Jan 2, 2026 | Benjamin S. Taecker Chief Eng and Opr Officer | FTax withholding Common Stock | -979 | $4.80 | $4,699 | 36,493 | Jan 6, 2026 |
| Jan 2, 2026 | Stephen Cotton Chief Executive Officer | FTax withholding Common Stock | -3,208 | $4.80 | $15k | 147,559 | Jan 6, 2026 |
| Dec 18, 2025 | Stephen Cotton Chief Executive Officer | AGrant or award Common Stock | +14,749 | $0.00 | $0 | 157,014 | Dec 22, 2025 |
| Dec 18, 2025 | Stephen Cotton Chief Executive Officer | FTax withholding Common Stock | -6,247 | $5.46 | $34k | 150,767 | Dec 22, 2025 |
| Nov 20, 2025 | Eric West Chief Financial Officer | FTax withholding Common Stock | -720 | $9.80 | $7,056 | 38,745 | Nov 24, 2025 |
| Oct 13, 2025 | Eric West Chief Financial Officer | AGrant or award Common Stock | +12,224 | $9.58 | $117k | 39,465 | Oct 15, 2025 |
| Oct 13, 2025 | Stephen Cotton Chief Executive Officer | AGrant or award Common Stock | +33,320 | $9.58 | $319k | 142,265 | Oct 15, 2025 |
| Oct 13, 2025 | Benjamin S. Taecker Chief Eng and Opr Officer | AGrant or award Common Stock | +10,132 | $9.58 | $97k | 37,472 | Oct 15, 2025 |
| Sep 19, 2025 | Stephen Cotton Chief Executive Officer | AGrant or award Common Stock | +11,250 | $0.00 | $0 | 115,369 | Sep 23, 2025 |
| Sep 19, 2025 | Stephen Cotton Chief Executive Officer | FTax withholding Common Stock | -4,765 | $4.12 | $20k | 110,604 | Sep 23, 2025 |
| Aug 19, 2025 | Stephen Cotton Chief Executive Officer | AGrant or award Common Stock | +46,824 | $3.95 | $185k | 106,039 | Aug 21, 2025 |
| Aug 19, 2025 | Benjamin S. Taecker Chief Eng and Opr Officer | AGrant or award Common Stock | +14,238 | $3.95 | $56k | 28,879 | Aug 21, 2025 |
| Aug 19, 2025 | Eric West Chief Financial Officer | AGrant or award Common Stock | +17,179 | $3.95 | $68k | 27,241 | Aug 21, 2025 |
| Aug 20, 2025 | Benjamin S. Taecker Chief Eng and Opr Officer | FTax withholding Common Stock | -564 | $3.68 | $2,076 | 28,315 | Aug 21, 2025 |
| Aug 20, 2025 | Stephen Cotton Chief Executive Officer | FTax withholding Common Stock | -1,920 | $3.68 | $7,066 | 104,119 | Aug 21, 2025 |
| Jul 1, 2025 | Benjamin S. Taecker Chief Eng and Opr Officer | FTax withholding Common Stock | -3,043 | $0.49 | $1,491 | 146,426 | Jul 3, 2025 |
| Jul 1, 2025 | Stephen Cotton Chief Executive Officer | FTax withholding Common Stock | -9,301 | $0.49 | $4,557 | 592,154 | Jul 3, 2025 |
| May 6, 2025 | Steven K Henderson director | AGrant or award Common Stock | +54,347 | $0.00 | $0 | 64,136 | May 8, 2025 |
| May 6, 2025 | Vincent L Divito director | AGrant or award Common Stock | +65,217 | $0.00 | $0 | 107,619 | May 8, 2025 |
| May 6, 2025 | Peifang Zhang director | AGrant or award Common Stock | +43,478 | $0.00 | $0 | 86,085 | May 8, 2025 |
| May 6, 2025 | Eric John Gangloff director | AGrant or award Common Stock | +54,347 | $0.00 | $0 | 119,208 | May 8, 2025 |
| Apr 2, 2025 | Steven K Henderson director | AGrant or award Common Stock | +9,789 | $1.86 | $18k | 9,789 | Apr 4, 2025 |
| Apr 2, 2025 | Eric John Gangloff director | AGrant or award Common Stock | +7,661 | $1.86 | $14k | 64,861 | Apr 4, 2025 |
| Apr 2, 2025 | Vincent L Divito director | AGrant or award Common Stock | +12,096 | $1.86 | $22k | 42,402 | Apr 4, 2025 |
| Apr 2, 2025 | Peifang Zhang director | AGrant or award Common Stock | +16,129 | $1.86 | $30k | 42,606 | Apr 4, 2025 |
| Feb 20, 2025 | Stephen Cotton Chief Executive Officer | AGrant or award Common Stock | +37,103 | $0.00 | $0 | 601,455 | Feb 24, 2025 |
| Feb 20, 2025 | Judd Merrill Chief Financial Officer | AGrant or award Common Stock | +27,208 | $0.00 | $0 | 244,119 | Feb 24, 2025 |
| Feb 20, 2025 | Benjamin S. Taecker Chief Eng and Opr Officer | AGrant or award Common Stock | +21,802 | $0.00 | $0 | 149,469 | Feb 24, 2025 |
| Jan 1, 2025 | Benjamin S. Taecker Chief Eng and Opr Officer | FTax withholding Common Stock | -4,222 | $2.52 | $11k | 127,667 | Jan 3, 2025 |
| Jan 1, 2025 | Stephen Cotton Chief Executive Officer | FTax withholding Common Stock | -13,337 | $2.52 | $34k | 564,352 | Jan 3, 2025 |
Insiders
Everyone who has filed a Form 4 here.
- Stephen CottonChief Executive Officer
- Vincent L Divitodirector
- Eric John Gangloffdirector
- Steven K Hendersondirector
- Judd MerrillChief Financial Officer
- Benjamin S. TaeckerChief Eng and Opr Officer
- Eric WestChief Financial Officer
- Peifang Zhangdirector
Questions about AQMS
Answered from the filings on this page, as of the latest one.
Are insiders buying AQMS?
No. In the last 90 days no insider at Aqua Metals, Inc. bought or sold shares on the open market according to SEC Form 4 filings. The rows on file from that period are grants, exercises, tax withholding or other transactions, which carry no view on the price.
Who was the last insider to trade AQMS on the open market?
No open-market trade has been scored at Aqua Metals, Inc.. The latest Form 4 on file was filed on May 20, 2026 and holds grants, exercises or other rows that are not market trades.
How many insiders file Form 4 at Aqua Metals, Inc.?
8 people have filed a Form 4 at Aqua Metals, Inc., among them Stephen Cotton (Chief Executive Officer), Vincent L Divito (director), Eric John Gangloff (director). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.