Tompkins Mark N.
Insider transactions at 6 companies
This page shows all SEC Form 4 filings attributed to Tompkins Mark N.. Form 4 disclosures are required whenever a corporate insider — director, officer, or 10%+ shareholder — buys, sells, or receives company stock. Each row represents a separate reported transaction. All data is sourced directly from the SEC EDGAR public database.
| Company | Title | Type | Shares | Price | Value | Date |
|---|---|---|---|---|---|---|
| ALMU | Sale | 15,000 | $14.87 | $223,050 | Dec 26, 2025 | |
| ALMU | Sale | 35,000 | $14.83 | $519,050 | Dec 19, 2025 | |
| ALMU | Sale | 20,000 | $17.49 | $349,800 | Dec 9, 2025 | |
| ALMU | Sale | 988 | $16.87 | $16,668 | Dec 4, 2025 | |
| ALMU | Sale | 37,500 | $16.39 | $614,625 | Oct 17, 2025 | |
| ALMU | Sale | 17,540 | $18.97 | $332,734 | Oct 16, 2025 | |
| ALMU | Sale | 30,587 | $16.60 | $507,744 | Oct 14, 2025 | |
| ALMU | Sale | 7,907 | $18.66 | $147,545 | Oct 8, 2025 | |
| ALMU | Sale | 12,958 | $17.94 | $232,467 | Oct 2, 2025 | |
| ALMU | Sale | 33,800 | $16.18 | $546,884 | Sep 30, 2025 | |
| ALMU | Sale | 9,133 | $16.39 | $149,690 | Sep 30, 2025 | |
| 0001918102 | Other | 2,833,333 | — | — | Sep 5, 2025 | |
| 0001918102 | Sale | 25,000 | — | — | Aug 26, 2025 | |
| 0002066067 | Sale | 50,000 | — | — | Aug 26, 2025 | |
| 0001918080 | Other | 2,833,333 | — | — | Jul 23, 2025 | |
| 0001918080 | Sale | 25,000 | — | — | Jul 16, 2025 | |
| ALMU | C | 200,000 | $3.50 | $700,000 | Mar 27, 2025 | |
| 0001900520 | Other | 3,550,000 | — | — | Nov 1, 2024 | |
| SERV | C | 312,500 | — | — | Jul 31, 2023 | |
| ALMU | Purchase | 83,333 | $3.00 | $249,999 | Dec 22, 2022 | |
| GUER | Purchase | 250,000 | $2.00 | $500,000 | Nov 12, 2021 | |
| GUER | Other | 275,000 | — | — | Oct 22, 2021 | |
| ALMU | Purchase | 107,500 | $2.00 | $215,000 | Jun 22, 2021 | |
| ALMU | Other | 2,450,000 | — | — | Jun 21, 2021 | |
| AMST | Sale | 17,494 | $2.39 | $41,811 | Jun 1, 2021 | |
| AMST | Sale | 11,453 | $2.24 | $25,655 | May 27, 2021 | |
| AMST | Sale | 10,243 | $2.25 | $23,047 | May 20, 2021 | |
| AMST | Sale | 16,430 | $2.19 | $35,982 | May 17, 2021 | |
| AMST | Sale | 13,705 | $2.22 | $30,425 | May 14, 2021 | |
| AMST | Sale | 12,711 | $2.69 | $34,193 | May 11, 2021 | |
| AMST | Sale | 13,777 | $2.67 | $36,785 | May 4, 2021 | |
| AMST | Sale | 16,169 | $2.61 | $42,201 | May 3, 2021 | |
| AMST | Sale | 13,500 | $2.97 | $40,095 | Apr 27, 2021 | |
| AMST | Sale | 10,627 | $2.79 | $29,649 | Apr 15, 2021 | |
| AMST | Sale | 15,539 | $3.43 | $53,299 | Apr 14, 2021 | |
| AMST | Sale | 11,000 | $3.52 | $38,720 | Apr 8, 2021 | |
| AMST | Sale | 9,924 | $4.21 | $41,780 | Apr 6, 2021 | |
| AMST | Sale | 45,834 | $4.26 | $195,253 | Apr 1, 2021 | |
| AMST | Sale | 3,449 | $6.02 | $20,763 | Mar 4, 2021 | |
| SMTK | Other | 2,450,000 | — | — | Feb 23, 2021 | |
| 0001769804 | Other | 2,743,333 | — | — | Oct 5, 2020 | |
| AMST | Purchase | 20,000 | $5.00 | $100,000 | Sep 29, 2020 | |
| 0001715768 | Other | 657,699 | — | — | Feb 12, 2020 | |
| 0001707258 | Sale | 50,000 | $0.08 | $4,000 | Sep 6, 2018 | |
| 0001707258 | Award / Grant | 83,334 | $1.20 | $100,001 | Apr 27, 2018 | |
| 0001584754 | Sale | 5,000 | $6.04 | $30,200 | Dec 28, 2017 | |
| 0001584754 | Sale | 12,500 | $6.28 | $78,500 | Dec 22, 2017 | |
| 0001584754 | Sale | 10,000 | $6.27 | $62,700 | Dec 21, 2017 | |
| 0001584754 | Sale | 6,000 | $6.27 | $37,620 | Dec 19, 2017 | |
| 0001584754 | Sale | 22,955 | $6.84 | $157,012 | Sep 28, 2017 |