Plug Power Inc (PLUG) shareholders
PLUGNasdaqElectrical Industrial ApparatusFiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 9, 2026Score 6/3030% below fair value
$1.35−0.01 (-0.73%)
Close on Nov 11, 2026Market cap $1.89BP/E –Yield –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
58.3%
815M of 1.40B shares
Institutional holders
507
87 new, 44 sold out
Net institutional buying
61M
In Q2 2026
Insider trades, 12 months
1 buys · 7 sales
Net sold $758.42K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| BlackRock, Inc. | 178,091,159 | 12.80% | 13G (passive) amendment | Jun 30, 2026 |
| Vanguard Capital Management | 73,043,212 | 5.23% | 13G (passive) | Mar 31, 2026 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of PLUG | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| BlackRock, Inc. | 184,032,469 | 13.17% | $498.73M | +31,939,194 | 0.01% |
| Vanguard Portfolio Management LLC | 66,175,149 | 4.74% | $179.33M | +6,571,343 | 0.01% |
| Vanguard Capital Management LLC | 62,937,084 | 4.50% | $170.56M | +386,646 | 0.00% |
| State Street Corp | 38,763,529 | 2.77% | $105.05M | +2,214,427 | 0.00% |
| Geode Capital Management, LLC | 36,557,253 | 2.62% | $99.09M | +1,848,436 | 0.01% |
| UBS Group AG | 33,127,276 | 2.37% | $89.77M | −8,466,203 | 0.01% |
| Citadel Advisors LLC | 24,149,952 | 1.73% | $65.45M | +23,291,268 | 0.01% |
| Two Sigma Investments, LP | 22,610,124 | 1.62% | $61.27M | −4,785,812 | 0.04% |
| D. E. Shaw & Co., Inc. | 21,943,120 | 1.57% | $59.47M | −27,015,380 | 0.03% |
| Dimensional Fund Advisors LP | 19,502,331 | 1.40% | $52.84M | +1,367,418 | 0.01% |
| Handelsbanken Fonder AB | 19,014,270 | 1.36% | $51.53M | +15,537,320 | 0.15% |
| Millennium Management LLC | 13,703,609 | 0.98% | $37.14M | +3,474,835 | 0.01% |
| Northern Trust Corp | 12,754,552 | 0.91% | $34.56M | +1,066,713 | 0.00% |
| Goldman Sachs Group Inc | 12,387,564 | 0.89% | $33.57M | +3,220,357 | 0.00% |
| Renaissance Technologies LLC | 11,779,800 | 0.84% | $31.92M | −15,958,700 | 0.04% |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 11,681,867 | 0.84% | $31.53M | +2,790,466 | 0.04% |
| Charles Schwab Investment Management Inc | 11,588,495 | 0.83% | $31.40M | +294,748 | 0.00% |
| Barclays PLC | 10,940,208 | 0.78% | $29.65M | +2,225,248 | 0.01% |
| Vanguard Fiduciary Trust Co | 9,962,553 | 0.71% | $27.00M | +997,191 | 0.01% |
| Legal & General Group Plc | 9,717,433 | 0.70% | $26.33M | +540,103 | 0.01% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 507 | 815M | 58.3% | 87 / 183 | 108 / 44 | 151M | 90M |
| Q1 2026 | 471 | 755M | 54.0% | 74 / 164 | 106 / 53 | 298M | 66M |
| Q4 2025 | 458 | 653M | 46.7% | 80 / 156 | 103 / 68 | 185M | 67M |
| Q3 2025 | 455 | 535M | 38.3% | 77 / 141 | 102 / 42 | 133M | 28M |
| Q2 2025 | 426 | 430M | 30.8% | 66 / 140 | 89 / 65 | 86M | 144M |
| Q1 2025 | 429 | 488M | 34.9% | 62 / 125 | 118 / 82 | 74M | 43M |
| Q4 2024 | 458 | 461M | 33.0% | 89 / 128 | 122 / 64 | 57M | 23M |
| Q3 2024 | 438 | 427M | 30.6% | 51 / 134 | 118 / 65 | 160M | 25M |
| Q2 2024 | 458 | 354M | 25.3% | 58 / 160 | 121 / 64 | 77M | 55M |
| Q1 2024 | 470 | 334M | 23.9% | 62 / 158 | 124 / 77 | 41M | 33M |
| Q4 2023 | 488 | 326M | 23.3% | 82 / 142 | 158 / 103 | 63M | 73M |
| Q3 2023 | 515 | 337M | 24.1% | 66 / 183 | 137 / 77 | 36M | 31M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
228 funds held PLUG in Q2 2026, 78% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
| Fund | Shares | % of PLUG | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 44,366,937 | 3.18% | $120.23M | 0.01% | Jun 30, 2026 |
| iShares Russell 2000 ETF | 35,636,330 | 2.55% | $96.57M | 0.12% | Jun 30, 2026 |
| Vanguard Small-Cap Index Fund | 32,014,597 | 2.29% | $86.76M | 0.05% | Jun 30, 2026 |
| iShares Global Clean Energy ETF | 29,864,423 | 2.14% | $61.52M | 2.67% | Jul 31, 2026 |
| Vanguard Small-Cap Growth Index Fund | 18,433,669 | 1.32% | $49.96M | 0.11% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 16,003,860 | 1.15% | $43.37M | 0.04% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund | 14,961,925 | 1.07% | $30.82M | 0.09% | Jul 31, 2026 |
| iShares Russell 2000 Growth ETF | 12,577,270 | 0.90% | $34.08M | 0.22% | Jun 30, 2026 |
| Fidelity Extended Market Index Fund | 7,163,711 | 0.51% | $28.30M | 0.07% | May 31, 2026 |
| Vanguard Russell 2000 Index Fund | 6,804,733 | 0.49% | $26.88M | 0.15% | May 31, 2026 |
| Schwab U.S. Small-Cap ETF | 6,685,093 | 0.48% | $26.41M | 0.12% | May 31, 2026 |
| Global X Hydrogen ETF | 4,582,207 | 0.33% | $18.10M | 10.78% | May 31, 2026 |
| Dimensional U.S. Small Cap ETF | 4,411,850 | 0.32% | $9.09M | 0.06% | Jul 31, 2026 |
| Fidelity Enhanced Small Cap Core ETF | 3,664,504 | 0.26% | $9.93M | 0.17% | Jun 30, 2026 |
| State Street(R) SPDR(R) S&P Kensho New Economies Composite ETF | 3,568,243 | 0.26% | $9.67M | 0.34% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Benjamin Haycraft | CSO & GM EMEA | 91,874 | 0.01% | Oct 19, 2026 |
| Dean Fullerton | Chief Operating Officer | – | – | Jun 29, 2026 |
| Paul B. Middleton | CFO & Executive VP | 3,011,661 | 0.22% | Jun 29, 2026 |
| Gerard L. Conway JR | Gen. Coun, Corp Sec., Exec. VP | 342,120 | 0.02% | Jun 29, 2026 |
| Jose Luis Crespo | See Remarks | 368,632 | 0.03% | Jun 29, 2026 |
| Martin Daniel Hull | Corporate Controller and CAO | 225,963 | 0.02% | May 7, 2025 |
| Colin M. Angle | Director | 159,223 | 0.01% | Oct 2, 2026 |
| Andrew Marsh | Director | 975,256 | 0.07% | Oct 2, 2026 |
| Patrick Joggerst | Director | 264,782 | 0.02% | Oct 2, 2026 |
| Mark J. Bonney | Director | 283,772 | 0.02% | Oct 2, 2026 |
| Gregory Kenausis | Director | 520,340 | 0.04% | Oct 2, 2026 |
| Maureen O. Helmer | Director | 362,918 | 0.03% | Jun 16, 2026 |
| George C. McNamee | Director | 1,173,282 | 0.08% | Jun 16, 2026 |
| Gary K. Willis | Director | 730,107 | 0.05% | Jun 16, 2026 |
| Kavita Mahtani | Director | 239,847 | 0.02% | Apr 10, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Benjamin Haycraft CSO & GM EMEA | Oct 15, 2026 | Sale(10b5-1 plan) | −9,375 | $1.41 | $13.22K | 91,874 |
| Colin M. Angle Director | Oct 1, 2026 | Award | +6,121 | $1.94 | $11.87K | 159,223 |
| Gregory Kenausis Director | Oct 1, 2026 | Award | +5,928 | $1.94 | $11.50K | 520,340 |
| Patrick Joggerst Director | Oct 1, 2026 | Award | +11,598 | $1.94 | $22.50K | 264,782 |
| Mark J. Bonney Director | Oct 1, 2026 | Award | +12,242 | $1.94 | $23.75K | 283,772 |
| Benjamin Haycraft CSO & GM EMEA | Sep 18, 2026 | Sale(10b5-1 plan) | −200,000 | $2.14 | $428.00K | 101,249 |
| Benjamin Haycraft CSO & GM EMEA | Sep 15, 2026 | Sale(10b5-1 plan) | −18,750 | $2.06 | $38.63K | 301,249 |
| Benjamin Haycraft CSO & GM EMEA | Sep 11, 2026 | Sale(10b5-1 plan) | −13,810 | $2.14 | $29.55K | 319,999 |
| Gregory Kenausis Director | Jul 1, 2026 | Award | +3,980 | $2.71 | $10.79K | 514,412 |
| Mark J. Bonney Director | Jul 1, 2026 | Award | +8,764 | $2.71 | $23.75K | 271,530 |
| Patrick Joggerst Director | Jul 1, 2026 | Award | +7,644 | $2.71 | $20.72K | 253,184 |
| Colin M. Angle Director | Jul 1, 2026 | Award | +3,558 | $2.71 | $9.64K | 153,102 |
| Paul B. Middleton CFO & Executive VP | Jun 25, 2026 | Award | +389,105 | – | – | 2,947,169 |
| Patrick Joggerst Director | Jun 11, 2026 | Award | +39,753 | – | – | 245,540 |
| Colin M. Angle Director | Jun 11, 2026 | Award | +39,753 | – | – | 149,544 |
| Gregory Kenausis Director | Jun 11, 2026 | Award | +39,753 | – | – | 510,432 |
| Maureen O. Helmer Director | Jun 11, 2026 | Award | +39,753 | – | – | 361,318 |
| George C. McNamee Director | Jun 11, 2026 | Award | +39,753 | – | – | 873,282 |
| Mark J. Bonney Director | Jun 11, 2026 | Award | +39,753 | – | – | 262,766 |
| Gary K. Willis Director | Jun 11, 2026 | Award | +39,753 | – | – | 730,107 |
| Maureen O. Helmer Director | Jun 8, 2026 | Sale(10b5-1 plan) | −50,000 | $3.23 | $161.50K | 321,565 |
| Colin M. Angle Director | Apr 1, 2026 | Award | +3,872 | $2.26 | $8.75K | 109,791 |
| Kavita Mahtani Director | Apr 1, 2026 | Award | +9,956 | $2.26 | $22.50K | 239,847 |
| Gregory Kenausis Director | Apr 1, 2026 | Award | +8,712 | $2.26 | $19.69K | 470,679 |
| Andrew Marsh Director | Apr 1, 2026 | Award | +3,688 | $2.26 | $8.33K | 853,378 |
| Mark J. Bonney Director | Apr 1, 2026 | Award | +10,509 | $2.26 | $23.75K | 223,013 |
| Patrick Joggerst Director | Apr 1, 2026 | Award | +8,850 | $2.26 | $20.00K | 205,787 |
| Benjamin Haycraft CSO & GM EMEA | Jan 12, 2026 | Sale(10b5-1 plan) | −40,000 | $2.17 | $86.80K | 333,809 |
| Patrick Joggerst Director | Jan 2, 2026 | Award | +10,152 | $1.97 | $20.00K | 196,937 |
| Colin M. Angle Director | Jan 2, 2026 | Award | +5,076 | $1.97 | $10.00K | 105,919 |
| Kavita Mahtani Director | Jan 2, 2026 | Award | +11,421 | $1.97 | $22.50K | 229,891 |
| Gary K. Willis Director | Jan 2, 2026 | Award | +16,497 | $1.97 | $32.50K | 690,354 |
| Maureen O. Helmer Director | Jan 2, 2026 | Award | +13,959 | $1.97 | $27.50K | 371,565 |
| Gregory Kenausis Director | Jan 2, 2026 | Award | +9,994 | $1.97 | $19.69K | 461,967 |
| Mark J. Bonney Director | Jan 2, 2026 | Award | +12,056 | $1.97 | $23.75K | 212,504 |
| George C. McNamee Director | Jan 2, 2026 | Award | +13,008 | $1.97 | $25.63K | 833,529 |
| Jose Luis Crespo See Remarks | Dec 15, 2025 | Buy | +37,300 | $2.34 | $87.28K | 307,332 |
| Benjamin Haycraft CSO & GM EMEA | Dec 10, 2025 | Sale(10b5-1 plan) | −40,000 | $2.20 | $88.00K | 373,809 |
| Andrew Marsh CEO, Director | Nov 28, 2025 | Award | +12,203 | $2.01 | $24.53K | 930,546 |
| Benjamin Haycraft CSO & EVP of EMEA Region | Nov 10, 2025 | Sale(10b5-1 plan) | −10,000 | $2.92 | $29.20K | 467,583 |
| Benjamin Haycraft CSO & GM EMEA | Nov 7, 2025 | Tax withholding | −35,957 | $2.51 | $90.25K | 413,809 |
| Andrew Marsh CEO, Director | Oct 31, 2025 | Award | +9,415 | $2.69 | $25.33K | 918,343 |
| Benjamin Haycraft CSO & GM EMEA | Oct 17, 2025 | Tax withholding | −7,817 | $3.48 | $27.20K | 449,766 |
| Benjamin Haycraft CSO & GM EMEA | Oct 10, 2025 | Sale(10b5-1 plan) | −10,000 | $3.80 | $38.00K | 457,583 |
| Andrew Marsh CEO, Director | Oct 3, 2025 | Award | +18,324 | $3.81 | $69.81K | 908,928 |
| Colin M. Angle Director | Oct 1, 2025 | Award | +4,292 | $2.33 | $10.00K | 100,843 |
| Mark J. Bonney Director | Oct 1, 2025 | Award | +10,193 | $2.33 | $23.75K | 200,448 |
| George C. McNamee Director | Oct 1, 2025 | Award | +10,998 | $2.33 | $25.63K | 820,521 |
| Maureen O. Helmer Director | Oct 1, 2025 | Award | +11,803 | $2.33 | $27.50K | 357,606 |
| Kavita Mahtani Director | Oct 1, 2025 | Award | +9,657 | $2.33 | $22.50K | 218,470 |
| Gregory Kenausis Director | Oct 1, 2025 | Award | +8,450 | $2.33 | $19.69K | 451,973 |
| Gary K. Willis Director | Oct 1, 2025 | Award | +13,948 | $2.33 | $32.50K | 673,857 |
| Patrick Joggerst Director | Oct 1, 2025 | Award | +8,584 | $2.33 | $20.00K | 186,785 |
| Benjamin Haycraft CSO & GM of EMEA Region | Sep 16, 2025 | Sale(10b5-1 plan) | −10,972 | $1.59 | $17.45K | 477,583 |
| Andrew Marsh President and CEO, Director | Aug 29, 2025 | Award | +18,471 | $1.67 | $30.85K | 890,604 |
| Andrew Marsh President and CEO, Director | Aug 1, 2025 | Award | +19,968 | $1.54 | $30.75K | 872,133 |
| Andrew Marsh President and CEO, Director | Jul 4, 2025 | Award | +38,156 | $1.01 | $38.54K | 852,165 |
| Gregory Kenausis Director | Jul 3, 2025 | Award | +76,531 | – | – | 443,523 |
| Kavita Mahtani Director | Jul 3, 2025 | Award | +76,531 | – | – | 208,813 |
| Mark J. Bonney Director | Jul 3, 2025 | Award | +76,531 | – | – | 190,255 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Short interest
Shares sold short and not yet bought back, as of Oct 30, 2026 (FINRA, reported twice a month)
Short % of float
21.07%
281M shares short
Days to cover
6.2
At 45M shares a day
Change since last report
-3.8%
From 292M shares
Short volume, 20 days
59.4%
Of volume reported to FINRA
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Plug Power's stock actually held short. Settlement fails (shares not delivered on time) peaked at 1,513,150 shares on Aug 28, 2026 over the last 90 days.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Benjamin Haycraft Officer | Oct 15, 2026 | 9,375 | $13.22K | Oct 15, 2026 | RSU VEST |
| Benjamin Haycraft Officer | Sep 18, 2026 | 200,000 | $428.30K | Sep 18, 2026 | OPTION EXERCISE |
| Benjamin Haycraft Officer | Sep 15, 2026 | 18,750 | $38.63K | Sep 15, 2026 | RSU VEST |
| Benjamin Haycraft Officer | Sep 11, 2026 | 13,810 | $29.55K | Sep 11, 2026 | RSU VEST |
| Colin M. Angle Director | Sep 9, 2026 | 44,957 | $101.60K | Sep 9, 2026 | Restricted Stock Awards |
| Maureen O. Helmer Director | Jun 8, 2026 | 50,000 | $160.75K | Jun 8, 2026 | Restricted Stock Units |
| Benjamin Haycraft Officer | Jan 12, 2026 | 40,000 | $86.80K | Jan 12, 2026 | RSU VEST |
| George C. McNamee Director | Dec 11, 2025 | 60,000 | $138.55K | Dec 11, 2025 | Previously Exercised Options |
| Benjamin Haycraft Officer | Dec 10, 2025 | 40,000 | $88.00K | Dec 10, 2025 | RSU VEST |
| Sanjay K. Shrestha Officer | Dec 2, 2025 | 50,000 | $107.50K | Dec 2, 2025 | Employee stock unit award(s) |
| Benjamin Haycraft Officer | Nov 10, 2025 | 10,000 | $29.20K | Nov 10, 2025 | RSU VEST |
| Benjamin Haycraft Officer | Oct 10, 2025 | 10,000 | $38.00K | Oct 10, 2025 | RSU VEST |
| Haycraft Benjamin Toby Patrick Officer | Sep 16, 2025 | 10,972 | $17.45K | Sep 16, 2025 | RSU VEST |
| Jose Luis Crespo Officer | Jun 11, 2025 | 37,300 | $49.24K | Jun 11, 2025 | RSU VEST |
| Mssb C/Fgeorge C McNameeira Rollover Dated 06/06/08 Officer | Nov 1, 2024 | 10,000 | $19.60K | Nov 1, 2024 | Employee Stock Purchase Plan |
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