Comparable stake leader
BlackRock, Inc.
SEC ownership of PLUG POWER INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001093691.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
31 Mar 2026
- Public ticker
- PLUG on Nasdaq
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
31 Mar 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001093691
- Issuer location
- Slingerlands, NY
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of PLUG POWER INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
31 Mar 2026
13F
13D/G
3/4/5
Lead comparable stake: 10%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 10%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
10%
VANGUARD CAPITAL MANAGEMENT LLC
5.2%
Grove Energy Capital LLC
4.8%
NORGES BANK
0.4%
Martin Daniel Hull
0.02%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
10%
from 13D/G
|
$343,730,802
152,093,275 shares
|
— | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.2%
|
$165,077,659
73,043,212 shares
|
$0 | 31 Mar 2026 |
| Grove Energy Capital LLC |
13D/G
|
4.8%
|
$51,118,555
54,966,188 shares
|
$0 | 06 Jun 2025 |
| NORGES BANK |
13D/G
|
0.4%
|
$7,458,986
5,006,031 shares
|
$0 | 30 Jun 2025 |
| Martin Daniel Hull |
3/4/5
Corporate Controller and CAO
|
0.02%
|
$271,526
225,963 shares
|
— | 06 Apr 2025 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
Company
|
4.3%
|
$134,704,602
59,603,806 shares
|
— | 31 Mar 2026 |
| D. E. Shaw & Co., Inc. |
13F
Company
|
3.5%
|
$110,646,210
48,958,500 shares
|
— | 31 Mar 2026 |
| UBS Group AG |
13F
Company
|
3%
|
$94,001,263
41,593,479 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$333,783.
Buys
$87,282
Insiders: 1
Sells
$421,065
Insiders: 2
Net
-$333,783
Shares: -123,672
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 37,300
Shares: 160,972
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 50,000 | $0 | $161,620 | -$161,620 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 37,300 | 90,000 | $87,282 | $204,000 | -$116,718 |
| 9-12 | 0 | 20,972 | $0 | $55,445 | -$55,445 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 25 reporting-owner rows connected to PLUG POWER INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
25
Largest Forms 3/4/5 holder
Paul B. Middleton
Net 12M change
-$333,783
Latest report
01 Jul 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Paul B. Middleton | CFO & Executive VP | $6,806,352 | Mixed | 25 Jun 2026 | ||
| George C. Mcnamee | Director | $2,651,617 | Mixed | 11 Jun 2026 | ||
| Keith Schmid | GM New Mkts & Pres New Prd Dv | $2,344,415 | Mixed | 29 Sep 2023 | ||
| Andrew Marsh | Director | $2,204,078 | Mixed | 30 Jun 2026 | ||
| Keith Schmidt | GM New Mkts & Pres New Prd Dv | $2,082,457 | Mixed | 19 Aug 2022 | ||
| Gary K. Willis | Director | $1,650,041 | Mixed | 11 Jun 2026 | ||
| Gregory Kenausis | Director | $1,394,828 | Median | 01 Jul 2026 | ||
| Dirk Ole Hoefelmann | GM, Electrolyzers & Exec VP | $1,267,115 | Mixed | 03 Mar 2023 | ||
| Johannes Minho Roth | Director | $1,055,849 | Mixed | 01 Jul 2022 | ||
| David Mindnich | EVP, Global Manufacturing | $844,394 | Mixed | 05 Sep 2023 | ||
| Jose Luis Crespo | President & Chief Revenue Officer | $840,530 | +$87,282 | +12% | Mixed | 25 Jun 2026 |
| Helmer Maureen O | Director | $816,578 | -$161,620 | -17% | Mixed | 11 Jun 2026 |
| Sanjay K. Shrestha | CSO & GM, Energy Solutions | $756,734 | Mixed | 26 Apr 2024 | ||
| Mark J. Bonney | Director | $736,253 | Median | 01 Jul 2026 | ||
| Benjamin Haycraft | Cso & Gm Emea | $724,365 | -$259,445 | -26% | Filing P/S | 25 Jun 2026 |
| Patrick Joggerst | Director | $686,508 | Median | 01 Jul 2026 | ||
| Lucas P. Schneider | Director | $608,859 | Mixed | 03 Apr 2023 | ||
| Kavita Mahtani | Director | $542,054 | Mixed | 01 Apr 2026 | ||
| Colin M. Angle | Director | $415,136 | Median | 01 Jul 2026 | ||
| Jonathan M. Silver | Director | $340,718 | Mixed | 03 Jul 2023 |
Recent insider transactions for PLUG POWER INC
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Gregory Kenausis | PLUG | Common Stock | Award | 0.78% | 3,980 | 514,412 | 01 Jul 2026 | Direct | ||
| Patrick Joggerst | PLUG | Common Stock | Award | 3.11% | 7,644 | 253,184 | 01 Jul 2026 | Direct | ||
| Mark J. Bonney | PLUG | Common Stock | Award | 3.34% | 8,764 | 271,530 | 01 Jul 2026 | Direct | ||
| Colin M. Angle | PLUG | Common Stock | Award | 2.38% | 3,558 | 153,102 | 01 Jul 2026 | Direct | ||
| Andrew Marsh | PLUG | Stock Option (Right to Buy) | Award | 72,469 | 72,469 | 30 Jun 2026 | Direct | |||
| Benjamin Haycraft | PLUG | Stock Option (Right to Buy) | Award | 719,837 | 362,694 | 25 Jun 2026 | Direct | |||
| Paul B. Middleton | PLUG | Common Stock | Award | 15.2% | 389,105 | 2,947,169 | 25 Jun 2026 | Direct | ||
| Paul B. Middleton | PLUG | Stock Option (Right to Buy) | Award | 510,204 | 510,204 | 25 Jun 2026 | Direct | |||
| Gerard L. Conway Jr. | PLUG | Stock Option (Right to Buy) | Award | 719,837 | 362,694 | 25 Jun 2026 | Direct | |||
| Dean Fullerton | PLUG | Stock Option (Right to Buy) | Award | 822,671 | 414,508 | 25 Jun 2026 | Direct | |||
| Jose Luis Crespo | PLUG | Stock Option (Right to Buy) | Award | 1,542,508 | 777,202 | 25 Jun 2026 | Direct | |||
| Gary K. Willis | PLUG | Common Stock | Award | 5.76% | 39,753 | 730,107 | 11 Jun 2026 | Direct | ||
| Gary K. Willis | PLUG | Stock Option (Right to Buy) | Award | 39,753 | 39,753 | 11 Jun 2026 | Direct | |||
| George C. Mcnamee | PLUG | Common Stock | Award | 4.77% | 39,753 | 873,282 | 11 Jun 2026 | Direct | ||
| George C. Mcnamee | PLUG | Stock Option (Right to Buy) | Award | 39,753 | 39,753 | 11 Jun 2026 | Direct | |||
| Gregory Kenausis | PLUG | Common Stock | Award | 8.45% | 39,753 | 510,432 | 11 Jun 2026 | Direct | ||
| Gregory Kenausis | PLUG | Stock Option (Right to Buy) | Award | 39,753 | 39,753 | 11 Jun 2026 | Direct | |||
| Patrick Joggerst | PLUG | Common Stock | Award | 19.3% | 39,753 | 245,540 | 11 Jun 2026 | Direct | ||
| Patrick Joggerst | PLUG | Stock Option (Right to Buy) | Award | 39,753 | 39,753 | 11 Jun 2026 | Direct | |||
| Helmer Maureen O | PLUG | Common Stock | Award | 12.4% | 39,753 | 361,318 | 11 Jun 2026 | Direct | ||
| Helmer Maureen O | PLUG | Stock Option (Right to Buy) | Award | 39,753 | 39,753 | 11 Jun 2026 | Direct | |||
| Mark J. Bonney | PLUG | Common Stock | Award | 17.8% | 39,753 | 262,766 | 11 Jun 2026 | Direct | ||
| Mark J. Bonney | PLUG | Stock Option (Right to Buy) | Award | 39,753 | 39,753 | 11 Jun 2026 | Direct | |||
| Colin M. Angle | PLUG | Common Stock | Award | 36.2% | 39,753 | 149,544 | 11 Jun 2026 | Direct | ||
| Colin M. Angle | PLUG | Stock Option (Right to Buy) | Award | 39,753 | 39,753 | 11 Jun 2026 | Direct | |||
| Helmer Maureen O | PLUG | Common Stock | Sale | -13.5% | $161,620 | $3.23 | -50,000 | 321,565 | 08 Jun 2026 | Direct |
| Gregory Kenausis | PLUG | Common Stock | Award | 1.89% | 8,712 | 470,679 | 01 Apr 2026 | Direct | ||
| Kavita Mahtani | PLUG | Common Stock | Award | 4.33% | 9,956 | 239,847 | 01 Apr 2026 | Direct | ||
| Colin M. Angle | PLUG | Common Stock | Award | 3.66% | 3,872 | 109,791 | 01 Apr 2026 | Direct | ||
| Mark J. Bonney | PLUG | Common Stock | Award | 4.95% | 10,509 | 223,013 | 01 Apr 2026 | Direct | ||
| Patrick Joggerst | PLUG | Common Stock | Award | 4.49% | 8,850 | 205,787 | 01 Apr 2026 | Direct | ||
| Andrew Marsh | PLUG | Common Stock | Award | 0.43% | 3,688 | 853,378 | 01 Apr 2026 | Direct | ||
| Andrew Marsh | PLUG | Stock Option (Right to Buy) | Award | 87,260 | 87,260 | 31 Mar 2026 | Direct | |||
| Andrew Marsh | PLUG | Stock Option (Right to Buy) | Award | 163,638 | 163,638 | 02 Mar 2026 | Direct | |||
| Benjamin Haycraft | PLUG | Common Stock | Sale | -10.7% | $86,800 | $2.17 | -40,000 | 333,809 | 12 Jan 2026 | Direct |
| George C. Mcnamee | PLUG | Common Stock | Award | 1.59% | 13,008 | 833,529 | 02 Jan 2026 | Direct | ||
| Kavita Mahtani | PLUG | Common Stock | Award | 5.23% | 11,421 | 229,891 | 02 Jan 2026 | Direct | ||
| Gregory Kenausis | PLUG | Common Stock | Award | 2.21% | 9,994 | 461,967 | 02 Jan 2026 | Direct | ||
| Patrick Joggerst | PLUG | Common Stock | Award | 5.44% | 10,152 | 196,937 | 02 Jan 2026 | Direct | ||
| Helmer Maureen O | PLUG | Common Stock | Award | 3.9% | 13,959 | 371,565 | 02 Jan 2026 | Direct | ||
| Mark J. Bonney | PLUG | Common Stock | Award | 6.01% | 12,056 | 212,504 | 02 Jan 2026 | Direct | ||
| Colin M. Angle | PLUG | Common Stock | Award | 5.03% | 5,076 | 105,919 | 02 Jan 2026 | Direct | ||
| Gary K. Willis | PLUG | Common Stock | Award | 2.45% | 16,497 | 690,354 | 02 Jan 2026 | Direct | ||
| Jose Luis Crespo | PLUG | Common Stock | Purchase | 13.8% | $87,282 | $2.34 | 37,300 | 307,332 | 15 Dec 2025 | Direct |
| Benjamin Haycraft | PLUG | Common Stock | Sale | -9.67% | $88,000 | $2.20 | -40,000 | 373,809 | 10 Dec 2025 | Direct |
| Andrew Marsh | PLUG | Common Stock | Award | 1.33% | 12,203 | 930,546 | 28 Nov 2025 | Direct | ||
| Benjamin Haycraft | PLUG | Common Stock | Sale | -2.09% | $29,200 | $2.92 | -10,000 | 467,583 | 10 Nov 2025 | Direct |
| Benjamin Haycraft | PLUG | Common Stock | Tax liability | -7.99% | -35,957 | 413,809 | 07 Nov 2025 | Direct | ||
| Andrew Marsh | PLUG | Common Stock | Award | 1.04% | 9,415 | 918,343 | 31 Oct 2025 | Direct | ||
| Benjamin Haycraft | PLUG | Common Stock | Tax liability | -1.71% | -7,817 | 449,766 | 17 Oct 2025 | Direct |
* marks a reported price that did not pass the local price check.