Over the past year, AMPL insiders bought $299,790 of stock (30K shares) and sold $13.44 million (1.16Mn shares) on the open market.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Management Corp. Battery | TenPercentOwner | 0 | 10,587,825 | 10,587,825 | 16.7% | 11 May, 2022 |
| 2 | Partners Xi, Llc Battery | TenPercentOwner | 0 | 8,587,825 | 8,587,825 | 13.6% | 23 Mar, 2023 |
| 3 | Curtis Liu | Chief Technology Officer | 950,316 | 7,382,208 | 8,332,524 | 13.2% | 18 Aug, 2026 |
| 4 | Us (Ttgp), Ltd. Sc | TenPercentOwner | 0 | 7,809,070 | 7,809,070 | 12.3% | 08 Jun, 2023 |
| 5 | An-Yen Hu | TenPercentOwner | 0 | 6,221,723 | 6,221,723 | 9.8% | 02 Dec, 2022 |
| 6 | Capital Management Co. Viii, L.L.C. Benchmark | TenPercentOwner | 0 | 6,211,438 | 6,211,438 | 9.8% | 02 Dec, 2022 |
| 7 | Patrick W Grady | Director, TenPercentOwner | 85,806 | 5,245,320 | 5,331,126 | 8.4% | 11 Jun, 2026 |
| 8 | Thomas Neergaard Hansen | President | 1,845,845 | 0 | 1,845,845 | 2.9% | 17 Feb, 2026 |
| 9 | Nathaniel Glenn Crook | Chief Commercial Officer | 1,622,696 | 0 | 1,622,696 | 2.6% | 09 Sep, 2026 |
| 10 | Spenser Skates | Ceo And President | 1,231,188 | 307,157 | 1,538,345 | 2.4% | 06 Oct, 2026 |
| 11 | Andrew Casey | Chief Financial Officer | 1,363,338 | 0 | 1,363,338 | 2.2% | 18 Aug, 2026 |
| 12 | Christopher Harms | Chief Financial Officer | 833,853 | 0 | 833,853 | 1.3% | 17 May, 2024 |
| 13 | Hoang Vuong | Chief Financial Officer | 813,896 | 0 | 813,896 | 1.3% | 03 Jan, 2023 |
| 14 | Neeraj Agrawal | TenPercentOwner | 0 | 327,766 | 327,766 | 0.5% | 09 Jan, 2024 |
| 15 | Ventures Select Fund I, L.P. Battery | TenPercentOwner | 0 | 327,766 | 327,766 | 0.5% | 09 Jan, 2024 |
| 16 | Matthew Heinz | Chief Revenue Officer | 272,949 | 0 | 272,949 | 0.4% | 17 Jun, 2022 |
| 17 | Mitchell Lasky | TenPercentOwner | 0 | 247,879 | 247,879 | 0.4% | 12 Aug, 2022 |
| 18 | Tien Tzuo | Director | 198,091 | 0 | 198,091 | 0.3% | 07 Oct, 2026 |
| 19 | James M Whitehurst | Director | 187,201 | 0 | 187,201 | 0.3% | 11 Jun, 2026 |
| 20 | Erica Schultz | Director | 143,992 | 0 | 143,992 | 0.2% | 07 Oct, 2026 |
| 21 | Sarah E Tavel | TenPercentOwner | 115,087 | 0 | 115,087 | 0.2% | 11 Aug, 2022 |
| 22 | Catherine Wong | Director | 111,462 | 0 | 111,462 | 0.2% | 15 Jun, 2026 |
| 23 | Ronald S Gill | Director | 99,535 | 0 | 99,535 | 0.2% | 11 Jun, 2026 |
| 24 | Ninos Sarkis | Chief Accounting Officer | 83,891 | 0 | 83,891 | 0.1% | 21 Feb, 2023 |
| 25 | Eric Vishria | Director | 64,712 | 0 | 64,712 | 0.1% | 16 Jun, 2025 |
| 26 | Vijaye Ganesh Raji | Director | 37,851 | 0 | 37,851 | 0.1% | 15 Oct, 2026 |
| 27 | Elisa Steele | Director | 21,690 | 0 | 21,690 | 0.0% | 13 Jun, 2024 |
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 |
|---|---|---|---|---|---|---|---|---|
| 15 Oct, 2026 | Vijaye Ganesh Raji | Director | Acquired A | 37,851 | $0.00 | $0 | 37,851 | Direct |
| 05 Oct, 2026 | Tien Tzuo | Director | Acquired A | 818 | $0.00 | $0 | 102,419 | Direct |
| 05 Oct, 2026 | Erica Schultz | Director | Acquired A | 892 | $0.00 | $0 | 143,992 | Direct |
| 02 Oct, 2026 | Spenser Skates | Ceo And President | Acquired C | 70,087 | $0.00 | $0 | 70,087 | Indirect |
| 02 Oct, 2026 | Spenser Skates | Ceo And President | Disposed S | 70,087 | $14.52 | $1.02Mn | 0 | Indirect |
| 02 Oct, 2026 | Spenser Skates | Ceo And President | Disposed C | 70,087 | $0.00 | $0 | 307,157 | Indirect |
| 30 Sep, 2026 | Spenser Skates | Ceo And President | Acquired C | 1,374 | $0.00 | $0 | 1,374 | Indirect |
| 30 Sep, 2026 | Spenser Skates | Ceo And President | Disposed S | 1,374 | $14.45 | $19.86K | 0 | Indirect |
| 01 Oct, 2026 | Spenser Skates | Ceo And President | Acquired C | 3,539 | $0.00 | $0 | 3,539 | Indirect |
| 01 Oct, 2026 | Spenser Skates | Ceo And President | Disposed S | 3,539 | $14.45 | $51.14K | 0 | Indirect |
| 30 Sep, 2026 | Spenser Skates | Ceo And President | Disposed C | 1,374 | $0.00 | $0 | 380,783 | Indirect |
| 01 Oct, 2026 | Spenser Skates | Ceo And President | Disposed C | 3,539 | $0.00 | $0 | 377,244 | Indirect |
| 10 Sep, 2026 | Spenser Skates | Ceo And President | Acquired C | 185,000 | $0.00 | $0 | 185,000 | Indirect |
| 10 Sep, 2026 | Spenser Skates | Ceo And President | Disposed S | 185,000 | $12.30 | $2.28Mn | 0 | Indirect |
| 10 Sep, 2026 | Spenser Skates | Ceo And President | Disposed C | 185,000 | $0.00 | $0 | 382,157 | Indirect |
| 04 Sep, 2026 | Nathaniel Glenn Crook | Chief Commercial Officer | Disposed S | 300,000 | $12.99 | $3.90Mn | 1,622,696 | Direct |
| 17 Aug, 2026 | Curtis Liu | Chief Technology Officer | Disposed F | 53,878 | $13.03 | $702.03K | 950,316 | Direct |
| 17 Aug, 2026 | Nathaniel Glenn Crook | Chief Commercial Officer | Disposed F | 109,368 | $13.03 | $1.43Mn | 1,922,696 | Direct |
| 17 Aug, 2026 | Andrew Casey | Chief Financial Officer | Disposed F | 72,814 | $13.03 | $948.77K | 1,363,338 | Direct |
| 17 Aug, 2026 | Spenser Skates | Ceo And President | Disposed F | 52,369 | $13.03 | $682.37K | 1,231,188 | Direct |