PPSI · Insider Trading
Pioneer Power Solutions, Inc.
Every open-market purchase and sale reported by PPSI officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-03 | Nathan Mazurek | Chief Executive Officer | M | +1,000 | +$2.18K |
| 2025-11-20 | Nathan Mazurek | Chief Executive Officer | Buy | +10,000 | +$33.87K |
| 2025-05-02 | Wojciech Michalec | Chief Financial Officer | F | −25,000 | −$148.00K |
| 2024-12-20 | Wojciech Michalec | Chief Financial Officer | Sell | −15,000 | −$61.41K |
| 2024-12-06 | Nathan Mazurek | Chief Executive Officer | A | +10,000 deriv. | — |
| 2024-12-06 | Kytchener Stevenson Whyte | Director | A | +10,000 deriv. | — |
| 2024-12-06 | Thomas Klink | Director | A | +10,000 deriv. | — |
| 2024-12-06 | David Tesler | Director | A | +10,000 deriv. | — |
| 2024-12-06 | Ian Ross | Director | Sell | −1,000 | −$6.01K |
| 2024-12-06 | Jonathan Tulkoff | Director | A | +10,000 deriv. | — |
| 2024-12-06 | Yossi Cohn | Director | M | +22,500 | +$58.34K |
| 2024-12-06 | Wojciech Michalec | Chief Financial Officer | A | +50,000 | — |
| 2024-11-18 | Ian Ross | Director | M | +22,500 | +$58.34K |
| 2024-10-24 | Wojciech Michalec | Chief Financial Officer | MIXED | +20,260 | +$36.88K |
| 2024-10-24 | Jonathan Tulkoff | Director | M | +33,500 | +$116.44K |
| 2024-10-22 | Thomas Klink | Director | M | +23,500 | +$99.64K |
| 2024-06-07 | Wojciech Michalec | Chief Financial Officer | F | −57,541 | −$223.26K |
| 2023-10-19 | Nathan Mazurek | Chief Executive Officer | F | −44,363 | −$272.83K |
| 2023-10-19 | Wojciech Michalec | Chief Financial Officer | F | −72,719 | −$447.22K |
| 2023-09-13 | Nathan Mazurek | Chief Executive Officer | Buy | +10,000 | +$60.88K |
| 2023-05-26 | Kytchener Stevenson Whyte | Director | A | +10,000 deriv. | — |
| 2023-05-18 | Yossi Cohn | Director | A | +10,000 deriv. | — |
| 2023-05-18 | David Tesler | Director | A | +10,000 deriv. | — |
| 2023-05-18 | Nathan Mazurek | Chief Executive Officer | A | +10,000 deriv. | — |
| 2023-05-18 | Nathan Mazurek | Chief Executive Officer | A | +100,000 | — |
| 2023-05-18 | Thomas Klink | Director | A | +10,000 deriv. | — |
| 2023-05-18 | Jonathan Tulkoff | Director | A | +10,000 deriv. | — |
| 2023-05-18 | Ian Ross | Director | A | +10,000 deriv. | — |
| 2022-12-14 | Nathan Mazurek | Chief Executive Officer | Buy | +10,000 | +$27.28K |
| 2022-06-14 | Nathan Mazurek | Chief Executive Officer | Buy | +2,500 | +$8.35K |
| 2022-05-17 | Thomas Klink | Director | A | +1,500 deriv. | — |
| 2022-05-17 | David Tesler | Director | A | +1,500 deriv. | — |
| 2022-05-17 | Nathan Mazurek | Chief Executive Officer | A | +6,500 deriv. | — |
| 2022-05-17 | Ian Ross | Director | A | +1,500 deriv. | — |
| 2022-05-17 | Yossi Cohn | Director | A | +1,500 deriv. | — |
| 2022-05-17 | Wojciech Michalec | Chief Financial Officer | A | +3,000 deriv. | — |
| 2022-05-17 | Jonathan Tulkoff | Director | A | +1,500 deriv. | — |
| 2022-04-26 | Wojciech Michalec | Chief Financial Officer | A | +375,000 | — |
| 2022-04-13 | Nathan Mazurek | Chief Executive Officer | J | +1,850,359 | — |
| 2022-03-18 | Jonathan Tulkoff | Director | M | +1,000 | +$4.11K |
| 2022-03-18 | Nathan Mazurek | Chief Executive Officer | M | +1,000 | +$4.11K |
| 2022-03-18 | Yossi Cohn | Director | M | +1,000 | +$4.11K |
| 2022-03-11 | David Tesler | Director | M | +12,000 | +$24.58K |
| 2022-02-28 | Ian Ross | Director | M | +1,000 | +$4.11K |
| 2021-12-10 | Thomas Klink | Director | M | +14,000 | +$33.23K |
| 2021-11-18 | Jonathan Tulkoff | Director | A | +10,000 deriv. | — |
| 2021-11-18 | Thomas Klink | Director | A | +10,000 deriv. | — |
| 2021-11-18 | Nathan Mazurek | Chief Executive Officer | A | +61,667 deriv. | — |
| 2021-11-18 | Yossi Cohn | Director | A | +10,000 deriv. | — |
| 2021-11-18 | Ian Ross | Director | A | +10,000 deriv. | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Nathan Mazurek | Chief Executive Officer | 6,537,496 | $15.30M |
| Wojciech Michalec | Chief Financial Officer | 275,000 | $643.50K |
| Thomas Klink | Director | 137,500 | $321.75K |
| Ian Ross | Director | 22,500 | $52.65K |
| Yossi Cohn | Director | 22,000 | $51.48K |
| David Tesler | Director | 15,750 | $36.85K |
| Jonathan Tulkoff | Director | 13,000 | $30.42K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the PPSI quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.