Maureen O. Helmer serves as Executive at PLUG POWER INC, where they oversee executive responsibilities. Since joining the company, Maureen O. Helmer has executed 106 insider transactions totaling $3.7M, demonstrating a bearish approach to their equity position. Their most recent transaction on Oct 1, 2025 involved receiving (via award) 11,803 shares valued at $27.5K.
Maureen O. Helmer currently holds 357,606 shares of PLUG POWER INC (PLUG), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Maureen O. Helmer has been a net seller of PLUG stock. They have purchased $29.5K and sold $3.7M worth of shares.
Maureen O. Helmer's most recent insider trade was on Oct 1, 2025, when they sold 11,803 shares at $2.33 per share.
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| $N/A |
| Discretionary |
| Jul 1, 2024 | PLUG | $27.5K | Award | 11,803 | $2.33 | Discretionary |
| Jun 5, 2024 | PLUG | $0 | Award | 37,375 | $N/A | Discretionary |
| Apr 1, 2024 | PLUG | $27.5K | Award | 7,994 | $3.44 | Discretionary |
| Jan 2, 2024 | PLUG | $13.8K | Award | 3,056 | $4.50 | Discretionary |
| Oct 2, 2023 | PLUG | $13.7K | Award | 1,809 | $7.60 | Discretionary |
| Jul 3, 2023 | PLUG | $13.7K | Award | 1,323 | $10.39 | Discretionary |
| Jun 27, 2023 | PLUG | $0 | Award | 12,149 | $N/A | Discretionary |
| Apr 3, 2023 | PLUG | $13.7K | Award | 1,173 | $11.72 | Discretionary |
| Jan 3, 2023 | PLUG | $10.6K | Award | 859 | $12.37 | Discretionary |
| Oct 3, 2022 | PLUG | $10.6K | Award | 506 | $21.01 | Discretionary |
| Jul 1, 2022 | PLUG | $10.6K | Award | 641 | $16.57 | Discretionary |
| Jun 30, 2022 | PLUG | $0 | Award | 6,789 | $N/A | Discretionary |
| Apr 1, 2022 | PLUG | $10.6K | Award | 371 | $28.61 | Discretionary |
| Jan 3, 2022 | PLUG | $10.6K | Award | 376 | $28.23 | Discretionary |
| Oct 1, 2021 | PLUG | $10.6K | Award | 416 | $25.54 | Discretionary |
| Aug 16, 2021 | PLUG | $0 | Award | 4,482 | $N/A | Discretionary |
| Jul 15, 2021 | PLUG | $10.6K | Award | 311 | $34.19 | Discretionary |
| Jul 15, 2021 | PLUG | $10.6K | Award | 296 | $35.84 | Discretionary |
| Jan 4, 2021 | PLUG | $0 | Award | 240 | $N/A | Discretionary |
| Dec 17, 2020 | PLUG | $300.0K | Sale | 10,000 | $30.00 | Discretionary |
| Dec 14, 2020 | PLUG | $8.1K | Sale | 300 | $27.14 | Discretionary |
| Dec 14, 2020 | PLUG | $391.9K | Sale | 15,011 | $26.11 | Discretionary |
| Oct 5, 2020 | PLUG | $525.0K | Sale | 35,000 | $15.00 | Discretionary |
| Oct 1, 2020 | PLUG | $0 | Award | 606 | $N/A | Discretionary |
| Sep 18, 2020 | PLUG | $996.0K | Sale | 75,000 | $13.28 | Discretionary |
| Jul 1, 2020 | PLUG | $0 | Award | 990 | $N/A | Discretionary |
| Jun 23, 2020 | PLUG | $78.6K | Option Exercise | 30,000 | $2.62 | Discretionary |
| Jun 23, 2020 | PLUG | $52.8K | Option Exercise | 30,000 | $1.76 | Discretionary |