As of September 29, 2026, Aqua Metals's top three insider holders are Stephen Cotton (Chief Executive Officer, 318.78K shares), Stephen Cotton (Chief Executive Officer, 252.89K shares), Eric West (Chief Financial Officer, 100.48K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Stephen Cotton | Chief Executive Officer | 571,674 | 0 | 571,674 | 61.4% | 26 Aug, 2026 |
| 2 | Benjamin S. Taecker | Chief Eng And Opr Officer | 105,529 | 0 | 105,529 | 11.3% | 26 Aug, 2026 |
| 3 | Eric West | Chief Financial Officer | 100,476 | 0 | 100,476 | 10.8% | 26 Aug, 2026 |
| 4 | Vincent L Divito | Director | 38,772 | 0 | 38,772 | 4.2% | 26 Aug, 2026 |
| 5 | David Mcmurtry | Chief Business Officer | 34,314 | 0 | 34,314 | 3.7% | 03 Jul, 2024 |
| 6 | Eric John Gangloff | Director | 22,347 | 0 | 22,347 | 2.4% | 26 Aug, 2026 |
| 7 | Edward J Smith | Director | 21,532 | 0 | 21,532 | 2.3% | 03 Jul, 2024 |
| 8 | Steven K Henderson | Director | 16,840 | 0 | 16,840 | 1.8% | 26 Aug, 2026 |
| 9 | David Kanen | Director | 9,326 | 0 | 9,326 | 1.0% | 06 Jul, 2023 |
| 10 | Sung Yi | Director | 0 | 5,275 | 5,275 | 0.6% | 16 May, 2024 |
| 11 | Peifang Zhang | Director | 4,085 | 0 | 4,085 | 0.4% | 08 May, 2025 |
| 12 | Judd Merrill | Chief Financial Officer | 1,221 | 0 | 1,221 | 0.1% | 24 Feb, 2025 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 24 Aug, 2026 | Steven K Henderson | Director | Acquired A | 10,427 | $0.00 | $0 | 16,840 | Direct |
| 24 Aug, 2026 | Stephen Cotton | Chief Executive Officer | Acquired A | 104,818 | $0.00 | $0 | 318,784 | Direct |
| 24 Aug, 2026 | Benjamin S. Taecker | Chief Eng And Opr Officer | Acquired A | 30,958 | $0.00 | $0 | 87,274 | Direct |
| 24 Aug, 2026 | Eric West | Chief Financial Officer | Acquired A | 37,352 | $0.00 | $0 | 100,476 | Direct |
| 24 Aug, 2026 | Vincent L Divito | Director | Acquired A | 15,641 | $0.00 | $0 | 26,402 | Direct |
| 24 Aug, 2026 | Eric John Gangloff | Director | Acquired A | 10,427 | $0.00 | $0 | 22,347 | Direct |
| 19 Aug, 2026 | Eric West | Chief Financial Officer | Disposed F | 1,213 | $2.67 | $3.24K | 63,124 | Direct |
| 19 Aug, 2026 | Stephen Cotton | Chief Executive Officer | Disposed F | 3,305 | $2.67 | $8.82K | 213,966 | Direct |
| 19 Aug, 2026 | Benjamin S. Taecker | Chief Eng And Opr Officer | Disposed F | 1,005 | $2.67 | $2.68K | 56,316 | Direct |
| 01 Jul, 2026 | Benjamin S. Taecker | Chief Eng And Opr Officer | Disposed F | 744 | $2.97 | $2.21K | 57,321 | Direct |
| 01 Jul, 2026 | Stephen Cotton | Chief Executive Officer | Disposed F | 2,402 | $2.97 | $7.13K | 217,271 | Direct |
| 19 May, 2026 | Eric West | Chief Financial Officer | Disposed F | 721 | $3.91 | $2.82K | 64,337 | Direct |
| 13 Apr, 2026 | Benjamin S. Taecker | Chief Eng And Opr Officer | Disposed F | 715 | $3.92 | $2.80K | 58,065 | Direct |
| 13 Apr, 2026 | Eric West | Chief Financial Officer | Disposed F | 863 | $3.92 | $3.38K | 65,058 | Direct |
| 13 Apr, 2026 | Stephen Cotton | Chief Executive Officer | Disposed F | 2,352 | $3.92 | $9.22K | 219,673 | Direct |
| 24 Feb, 2026 | Benjamin S. Taecker | Chief Eng And Opr Officer | Disposed F | 1,006 | $4.76 | $4.79K | 58,780 | Direct |
| 24 Feb, 2026 | Eric West | Chief Financial Officer | Disposed F | 1,214 | $4.76 | $5.78K | 65,921 | Direct |
| 24 Feb, 2026 | Stephen Cotton | Chief Executive Officer | Disposed F | 3,307 | $4.76 | $15.74K | 222,025 | Direct |
| 13 Feb, 2026 | Benjamin S. Taecker | Chief Eng And Opr Officer | Acquired A | 23,306 | $4.72 | $110.00K | 59,786 | Direct |
| 13 Feb, 2026 | Eric West | Chief Financial Officer | Acquired A | 28,390 | $4.72 | $134.00K | 67,135 | Direct |