As of September 09, 2026, the three largest insider holders of AMTX are Eric A Mcafee (Chief Executive Officer, 3.92Mn shares), Eric A Mcafee (Chief Executive Officer, 3.92Mn shares), Todd Waltz (Executive Vice President, Cfo, 456.82K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Eric A Mcafee | Chief Executive Officer | 3,917,316 | 0 | 3,917,316 | 80.2% | 23 Mar, 2026 |
| 2 | Todd Waltz | Executive Vice President, Cfo | 456,821 | 0 | 456,821 | 9.4% | 08 Apr, 2025 |
| 3 | Francis P Barton | Director | 226,518 | 0 | 226,518 | 4.6% | 28 Jan, 2026 |
| 4 | Lydia I Beebe | Director | 214,286 | 0 | 214,286 | 4.4% | 28 Jan, 2026 |
| 5 | Timothy Alan Simon | Director | 42,632 | 0 | 42,632 | 0.9% | 10 Jun, 2026 |
| 6 | James Michael Rockett | Evp, General Counsel | 27,922 | 0 | 27,922 | 0.6% | 19 May, 2025 |
| 7 | Sanjeev Gupta | Executive Vice President, Md | 143 | 0 | 143 | 0.0% | 17 Sep, 2021 |
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 |
|---|---|---|---|---|---|---|---|---|
| 10 Jun, 2026 | Timothy Alan Simon | Director | Disposed S | 10,000 | $2.05 | $20.50K | 42,632 | Direct |
| 19 Mar, 2026 | Andrew B Foster | Executive Vice President | Acquired A | 200,000 | $2.64 | $528.00K | 1,185,834 | Direct |
| 19 Mar, 2026 | Eric A Mcafee | Chief Executive Officer | Acquired A | 300,000 | $2.64 | $792.00K | 3,917,316 | Direct |
| 19 Mar, 2026 | Sanjeev Gupta | Executive Vice President | Acquired A | 200,000 | $2.64 | $528.00K | 1,385,000 | Direct |
| 19 Mar, 2026 | James Michael Rockett | Evp, General Counsel | Acquired A | 200,000 | $2.64 | $528.00K | 700,000 | Direct |
| 19 Mar, 2026 | Sanjeev Gupta | Executive Vice President | Acquired A | 200,000 | $2.64 | $528.00K | 1,385,000 | Direct |
| 19 Mar, 2026 | Todd Waltz | Executive Vice President, Cfo | Acquired A | 200,000 | $2.64 | $528.00K | 1,305,701 | Direct |
| 19 Mar, 2026 | Todd Waltz | Executive Vice President, Cfo | Acquired A | 200,000 | $2.64 | $528.00K | 1,305,701 | Direct |
| 19 Mar, 2026 | James Michael Rockett | Evp, General Counsel | Acquired A | 200,000 | $2.64 | $528.00K | 700,000 | Direct |
| 19 Mar, 2026 | Eric A Mcafee | Chief Executive Officer | Acquired A | 300,000 | $2.64 | $792.00K | 3,917,316 | Direct |
| 19 Mar, 2026 | Sanjeev Gupta | Executive Vice President | Acquired A | 200,000 | $2.64 | $528.00K | 1,385,000 | Direct |
| 19 Mar, 2026 | Andrew B Foster | Executive Vice President | Acquired A | 200,000 | $2.64 | $528.00K | 1,185,834 | Direct |
| 19 Mar, 2026 | Andrew B Foster | Executive Vice President | Acquired A | 200,000 | $2.64 | $528.00K | 1,185,834 | Direct |
| 19 Mar, 2026 | Todd Waltz | Executive Vice President, Cfo | Acquired A | 200,000 | $2.64 | $528.00K | 1,305,701 | Direct |
| 19 Mar, 2026 | James Michael Rockett | Evp, General Counsel | Acquired A | 200,000 | $2.64 | $528.00K | 700,000 | Direct |
| 19 Mar, 2026 | Andrew B Foster | Executive Vice President | Acquired A | 200,000 | $2.64 | $528.00K | 1,185,834 | Direct |
| 19 Mar, 2026 | Todd Waltz | Executive Vice President, Cfo | Acquired A | 200,000 | $2.64 | $528.00K | 1,305,701 | Direct |
| 19 Mar, 2026 | Eric A Mcafee | Chief Executive Officer | Acquired A | 300,000 | $2.64 | $792.00K | 3,917,316 | Direct |
| 19 Mar, 2026 | James Michael Rockett | Evp, General Counsel | Acquired A | 200,000 | $2.64 | $528.00K | 700,000 | Direct |
| 19 Mar, 2026 | Sanjeev Gupta | Executive Vice President | Acquired A | 200,000 | $2.64 | $528.00K | 1,385,000 | Direct |