Plug Power Inc
Ownership
Ownership Structure
Who owns Plug Power Inc (PLUG)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 95.5% of the shares are freely tradable; institutional investors hold 68.9%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 13.17 | 184,032,469 | +21.0 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 4.74 | 66,175,149 | +11.0 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.50 | 62,937,084 | +0.6 | 06/30/2026 |
| State Street Corp | 2.77 | 38,763,529 | +6.1 | 06/30/2026 |
| Geode Capital Management, LLC | 2.62 | 36,557,253 | +5.3 | 06/30/2026 |
| UBS Group AG | 2.37 | 33,127,276 | -20.4 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Global Clean Engy Trns ETF $Dist | 3.27 | 45,717,529 | +0.0 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.19 | 44,620,793 | +0.3 | 09/30/2026 |
| iShares Russell 2000 ETF | 2.54 | 35,460,828 | -1.1 | 09/30/2026 |
| Vanguard Small Cap Index | 2.25 | 31,464,486 | -1.9 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Kenausis Gregory | Director | 520,340 | 676,442 $ | Oct 1, 2026 | direct |
| Bonney Mark J | Director | 283,772 | 368,904 $ | Oct 1, 2026 | direct |
| Joggerst Patrick | Director | 264,782 | 344,217 $ | Oct 1, 2026 | direct |
| Angle Colin M | Director | 159,223 | 206,990 $ | Oct 1, 2026 | direct |
| Haycraft Benjamin | CSO & GM EMEA | 91,874 | 119,436 $ | Oct 15, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 15, 2026 | Haycraft Benjamin | CSO & GM EMEA | Sell | 9,375 | 1.41 | 13,219 |
| Oct 1, 2026 | Angle Colin M | Director | Other | 6,121 | 1.94 | 11,875 |
| Oct 1, 2026 | Kenausis Gregory | Director | Other | 5,928 | 1.94 | 11,500 |
| Oct 1, 2026 | Joggerst Patrick | Director | Other | 11,598 | 1.94 | 22,500 |
| Oct 1, 2026 | Bonney Mark J | Director | Other | 12,242 | 1.94 | 23,749 |
| Sep 18, 2026 | Haycraft Benjamin | CSO & GM EMEA | Sell | 200,000 | 2.14 | 428,300 |
| Sep 15, 2026 | Haycraft Benjamin | CSO & GM EMEA | Sell | 18,750 | 2.06 | 38,625 |
| Sep 11, 2026 | Haycraft Benjamin | CSO & GM EMEA | Sell | 13,810 | 2.14 | 29,553 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 2, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.