Plug Power Inc (PLUG) Insider Ownership

Historic Insider Ownership Trends

PLUG's three largest insider shareholders as of March 23, 2026 are Paul B Middleton (See Remarks, 2.56Mn shares), Andrew Marsh (Ceo, 930.55K shares), George C Mcnamee (Director, 833.53K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Paul B Middleton See Remarks 2,558,064 0 09 Jun, 2025
Andrew Marsh Ceo 930,546 0 03 Dec, 2025
George C Mcnamee 833,529 0 06 Jan, 2026
Gary K Willis 690,354 0 06 Jan, 2026
Keith Schmid Gm New Mkts Pres New Prd Dv 474,776 0 03 Oct, 2023
Gregory Kenausis 461,967 0 06 Jan, 2026
Maureen O Helmer 371,565 0 06 Jan, 2026
Benjamin Haycraft Cso Gm Emea 333,809 0 14 Jan, 2026
Jose Luis Crespo See Remarks 307,332 0 17 Dec, 2025
Dirk Ole Hoefelmann Gm, Electrolyzers Exec Vp 280,064 0 13 Apr, 2023
Gerard L Jr Conway Gen. Coun, Corp Sec., Exec. Vp 259,482 0 07 May, 2025
Johannes Minho Roth 234,633 0 15 Jul, 2022
Kavita Mahtani 229,891 0 06 Jan, 2026
Mark J Bonney 212,504 0 06 Jan, 2026
Patrick Joggerst 196,937 0 06 Jan, 2026
Martin Daniel Hull Corporate Controller And Cao 179,873 0 07 May, 2025
Sanjay K Shrestha Cso Gm, Energy Solutions 160,270 0 03 Oct, 2023
Lucas P Schneider 135,302 0 05 Apr, 2023
Colin M Angle 105,919 0 06 Jan, 2026
Jonathan M Silver 75,715 0 06 Jul, 2023
Jean A Bua 22,669 0 06 Jul, 2023
Kim Harriman 6,471 0 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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
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 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 Kavita Mahtani Common Stock A 11,421 $1.97 229,891 D A
02 Jan, 2026 Gregory Kenausis Common Stock A 9,994 $1.97 461,967 D A
02 Jan, 2026 George C Mcnamee Common Stock A 13,008 $1.97 833,529 D A
02 Jan, 2026 Patrick Joggerst Common Stock A 10,152 $1.97 196,937 D A
02 Jan, 2026 Colin M Angle Common Stock A 5,076 $1.97 105,919 D A
02 Jan, 2026 Maureen O Helmer Common Stock A 13,959 $1.97 371,565 D A
15 Dec, 2025 Jose Luis Crespo Common Stock A 37,300 $2.34 307,332 D P
10 Oct, 2025 Benjamin Haycraft Common Stock D 10,000 $3.80 457,583 D S
17 Oct, 2025 Benjamin Haycraft Common Stock D 7,817 $3.48 449,766 D F
07 Nov, 2025 Benjamin Haycraft Common Stock D 35,957 $2.51 413,809 D F
10 Dec, 2025 Benjamin Haycraft Common Stock D 40,000 $2.20 373,809 D S
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
31 Oct, 2025 Andrew Marsh Common Stock A 9,415 $2.69 918,343 D A
03 Oct, 2025 Andrew Marsh Common Stock A 18,324 $3.81 908,928 D A
01 Oct, 2025 Maureen O Helmer Common Stock A 11,803 $2.33 357,606 D A
01 Oct, 2025 George C Mcnamee Common Stock A 10,998 $2.33 820,521 D A