AQMS · Insider Trading
Aqua Metals, Inc. Common Stock
Every open-market purchase and sale reported by AQMS officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-15 | Stephen Cotton | Chief Executive Officer | MIXED | +32,958 | −$4.52K |
| 2026-10-15 | Benjamin S. Taecker | Chief Eng and Opr Officer | MIXED | +9,713 | −$1.37K |
| 2026-10-15 | Eric West | Chief Financial Officer | MIXED | +11,720 | −$1.66K |
| 2026-08-26 | Eric West | Chief Financial Officer | A | +37,352 | — |
| 2026-08-26 | Stephen Cotton | Chief Executive Officer | A | +104,818 | — |
| 2026-08-26 | Vincent L Divito | Director | A | +15,641 | — |
| 2026-08-26 | Eric John Gangloff | Director | A | +10,427 | — |
| 2026-08-26 | Benjamin S. Taecker | Chief Eng and Opr Officer | A | +30,958 | — |
| 2026-08-26 | Steven K Henderson | Director | A | +10,427 | — |
| 2026-08-21 | Stephen Cotton | Chief Executive Officer | F | −3,305 | −$8.82K |
| 2026-08-21 | Benjamin S. Taecker | Chief Eng and Opr Officer | F | −1,005 | −$2.68K |
| 2026-08-21 | Eric West | Chief Financial Officer | F | −1,213 | −$3.24K |
| 2026-07-07 | Benjamin S. Taecker | Chief Eng and Opr Officer | F | −744 | −$2.21K |
| 2026-07-07 | Stephen Cotton | Chief Executive Officer | F | −2,402 | −$7.13K |
| 2026-05-20 | Eric West | Chief Financial Officer | F | −721 | −$2.82K |
| 2026-04-15 | Eric West | Chief Financial Officer | F | −863 | −$3.38K |
| 2026-04-15 | Stephen Cotton | Chief Executive Officer | F | −2,352 | −$9.22K |
| 2026-04-15 | Benjamin S. Taecker | Chief Eng and Opr Officer | F | −715 | −$2.80K |
| 2026-02-26 | Stephen Cotton | Chief Executive Officer | F | −3,307 | −$15.74K |
| 2026-02-26 | Benjamin S. Taecker | Chief Eng and Opr Officer | F | −1,006 | −$4.79K |
| 2026-02-26 | Eric West | Chief Financial Officer | F | −1,214 | −$5.78K |
| 2026-02-17 | Benjamin S. Taecker | Chief Eng and Opr Officer | A | +23,306 | +$110.00K |
| 2026-02-17 | Stephen Cotton | Chief Executive Officer | A | +79,873 | +$377.00K |
| 2026-02-17 | Eric West | Chief Financial Officer | A | +28,390 | +$134.00K |
| 2026-01-09 | Stephen Cotton | Chief Executive Officer | D | −2,100 | — |
| 2026-01-09 | Benjamin S. Taecker | Chief Eng and Opr Officer | D | −13 | — |
| 2026-01-06 | Benjamin S. Taecker | Chief Eng and Opr Officer | F | −979 | −$4.70K |
| 2026-01-06 | Stephen Cotton | Chief Executive Officer | F | −3,208 | −$15.40K |
| 2025-12-22 | Stephen Cotton | Chief Executive Officer | MIXED | +8,502 | −$34.11K |
| 2025-11-24 | Eric West | Chief Financial Officer | F | −720 | −$7.06K |
| 2025-10-15 | Benjamin S. Taecker | Chief Eng and Opr Officer | A | +10,132 | +$97.06K |
| 2025-10-15 | Stephen Cotton | Chief Executive Officer | A | +33,320 | +$319.21K |
| 2025-10-15 | Eric West | Chief Financial Officer | A | +12,224 | +$117.11K |
| 2025-09-23 | Stephen Cotton | Chief Executive Officer | MIXED | +6,485 | −$19.63K |
| 2025-08-21 | Eric West | Chief Financial Officer | A | +17,179 | +$67.86K |
| 2025-08-21 | Benjamin S. Taecker | Chief Eng and Opr Officer | MIXED | +13,674 | +$54.16K |
| 2025-08-21 | Stephen Cotton | Chief Executive Officer | MIXED | +44,904 | +$177.89K |
| 2025-07-03 | Stephen Cotton | Chief Executive Officer | F | −9,301 | −$4.56K |
| 2025-07-03 | Benjamin S. Taecker | Chief Eng and Opr Officer | F | −3,043 | −$1.49K |
| 2025-05-08 | Peifang Zhang | Director | A | +43,478 | — |
| 2025-05-08 | Steven K Henderson | Director | A | +54,347 | — |
| 2025-05-08 | Vincent L Divito | Director | A | +65,217 | — |
| 2025-05-08 | Eric John Gangloff | Director | A | +54,347 | — |
| 2025-04-04 | Eric John Gangloff | Director | A | +7,661 | +$14.25K |
| 2025-04-04 | Vincent L Divito | Director | A | +12,096 | +$22.50K |
| 2025-04-04 | Peifang Zhang | Director | A | +16,129 | +$30.00K |
| 2025-04-04 | Steven K Henderson | Director | A | +9,789 | +$18.21K |
| 2025-02-24 | Stephen Cotton | Chief Executive Officer | A | +37,103 | — |
| 2025-02-24 | Benjamin S. Taecker | Chief Eng and Opr Officer | A | +21,802 | — |
| 2025-02-24 | Judd Merrill | Chief Financial Officer | A | +27,208 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Stephen Cotton | Chief Executive Officer | 351,742 | $517.06K |
| Eric West | Chief Financial Officer | 113,059 | $166.20K |
| Benjamin S. Taecker | Chief Eng and Opr Officer | 97,703 | $143.62K |
| Vincent L Divito | Director | 26,402 | $38.81K |
| Judd Merrill | Chief Financial Officer | 24,412 | $35.89K |
| Eric John Gangloff | Director | 22,347 | $32.85K |
| Steven K Henderson | Director | 16,840 | $24.75K |
| Peifang Zhang | Director | 8,608 | $12.65K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the AQMS quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.