Data spanning the past 90 days through February 19, 2026 reveals that Plug Power's three principal insider shareholders consist of Officer Paul B Middleton (2.56Mn shares), Ceo Andrew Marsh (930.55K shares), Director George C Mcnamee (833.53K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Paul B Middleton | Nan | 2,558,064 | 09 Jun, 2025 |
| Andrew Marsh | Ceo | 930,546 | 03 Dec, 2025 |
| George C Mcnamee | 833,529 | 06 Jan, 2026 | |
| Gary K Willis | 690,354 | 06 Jan, 2026 | |
| Keith Schmid | Gm New Mkts & Pres New Prd Dv | 474,776 | 03 Oct, 2023 |
| Gregory Kenausis | 461,967 | 06 Jan, 2026 | |
| Maureen O Helmer | 371,565 | 06 Jan, 2026 | |
| Benjamin Haycraft | Cso & Gm Emea | 333,809 | 14 Jan, 2026 |
| Jose Luis Crespo | Nan | 307,332 | 17 Dec, 2025 |
| Dirk Ole Hoefelmann | Gm And Electrolyzers & Exec Vp | 280,064 | 13 Apr, 2023 |
| Gerard L Jr Conway | Gen. Coun And Corp Sec. And Exec. Vp | 259,482 | 07 May, 2025 |
| Johannes Minho Roth | 234,633 | 15 Jul, 2022 | |
| Kavita Mahtani | 229,891 | 06 Jan, 2026 | |
| Mark J Bonney | 212,504 | 06 Jan, 2026 | |
| Patrick Joggerst | 196,937 | 06 Jan, 2026 | |
| Martin Daniel Hull | Corporate Controller And Cao | 179,873 | 07 May, 2025 |
| Sanjay K Shrestha | Cso & Gm And Energy Solutions | 160,270 | 03 Oct, 2023 |
| Lucas P Schneider | 135,302 | 05 Apr, 2023 | |
| Colin M Angle | 105,919 | 06 Jan, 2026 | |
| Jonathan M Silver | 75,715 | 06 Jul, 2023 | |
| Jean A Bua | 22,669 | 06 Jul, 2023 | |
| Kim Harriman | 6,471 | 15 Jul, 2022 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 12 Jan, 2026 | Benjamin Haycraft | Common Stock | D | 40,000 | $2.17 | 333,809 | D | S |
| 02 Jan, 2026 | George C Mcnamee | Common Stock | A | 13,008 | $1.97 | 833,529 | D | A |
| 02 Jan, 2026 | Gary K Willis | Common Stock | A | 16,497 | $1.97 | 690,354 | D | A |
| 02 Jan, 2026 | Mark J Bonney | Common Stock | A | 12,056 | $1.97 | 212,504 | D | A |
| 02 Jan, 2026 | Maureen O Helmer | Common Stock | A | 13,959 | $1.97 | 371,565 | D | A |
| 02 Jan, 2026 | Colin M Angle | Common Stock | A | 5,076 | $1.97 | 105,919 | D | A |
| 02 Jan, 2026 | Patrick Joggerst | Common Stock | A | 10,152 | $1.97 | 196,937 | D | A |
| 02 Jan, 2026 | Gregory Kenausis | Common Stock | A | 9,994 | $1.97 | 461,967 | D | A |
| 02 Jan, 2026 | Kavita Mahtani | Common Stock | A | 11,421 | $1.97 | 229,891 | D | A |
| 15 Dec, 2025 | Jose Luis Crespo | Common Stock | A | 37,300 | $2.34 | 307,332 | D | P |
| 15 Dec, 2025 | Jose Luis Crespo | - | - | 307,332 | D | |||
| 10 Dec, 2025 | Benjamin Haycraft | Common Stock | D | 40,000 | $2.20 | 373,809 | D | S |
| 28 Nov, 2025 | Andrew Marsh | - | - | 930,546 | D | |||
| 28 Nov, 2025 | Andrew Marsh | Common Stock | A | 12,203 | $2.01 | 930,546 | D | A |
| 10 Nov, 2025 | Benjamin Haycraft | Common Stock | D | 10,000 | $2.92 | 467,583 | D | S |
| 07 Nov, 2025 | Benjamin Haycraft | Common Stock | D | 35,957 | $2.51 | 413,809 | D | F |
| 31 Oct, 2025 | Andrew Marsh | Common Stock | A | 9,415 | $2.69 | 918,343 | D | A |
| 17 Oct, 2025 | Benjamin Haycraft | Common Stock | D | 7,817 | $3.48 | 449,766 | D | F |
| 10 Oct, 2025 | Benjamin Haycraft | Common Stock | D | 10,000 | $3.80 | 457,583 | D | S |
| 03 Oct, 2025 | Andrew Marsh | Common Stock | A | 18,324 | $3.81 | 908,928 | D | A |