PPSI's three largest insider shareholders as of April 28, 2026 are Nathan Mazurek (Chief Executive Officer, 2.01Mn shares), Nathan Mazurek (Chief Executive Officer, 1.98Mn shares), Wojciech Michalec (Chief Financial Officer, 375.00K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Nathan Mazurek | Chief Executive Officer | 2,010,859 | 0 | 13 Sep, 2023 |
| Nathan Mazurek | Chief Executive Officer | 1,977,496 | 0 | 03 Mar, 2026 |
| Wojciech Michalec | Chief Financial Officer | 375,000 | 0 | 26 Apr, 2022 |
| Wojciech Michalec | Chief Financial Officer | 275,000 | 0 | 02 May, 2025 |
| Thomas Klink | - | 137,500 | 0 | 22 Oct, 2024 |
| Jonathan Tulkoff | - | 44,500 | 0 | 24 Oct, 2024 |
| Nathan Mazurek | Chief Executive Officer | 37,000 | 0 | 18 Aug, 2021 |
| Yossi Cohn | - | 23,500 | 0 | 06 Dec, 2024 |
| Ian Ross | - | 23,500 | 0 | 18 Nov, 2024 |
| Ian Ross | - | 22,500 | 0 | 06 Dec, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 02 Mar, 2026 | Nathan Mazurek | Common Stock, par value $0.001 per share | A | 1,000 | $2.18 | 1,977,496 | D | M |
| 02 Mar, 2026 | Nathan Mazurek | Stock Option (Right to Buy) | D | 1,000 | $0.00 | 0 | D | M |
| 18 Nov, 2025 | Nathan Mazurek | Common Stock, par value $0.001 per share | A | 10,000 | $3.39 | 1,976,496 | D | P |
| 02 May, 2025 | Wojciech Michalec | Common Stock, par value $0.001 per share | D | 25,000 | $5.92 | 275,000 | D | F |
| 19 Dec, 2024 | Wojciech Michalec | Common Stock, par value $0.001 per share | D | 1,960 | $4.12 | 313,040 | D | S |
| 20 Dec, 2024 | Wojciech Michalec | Common Stock, par value $0.001 per share | D | 13,040 | $4.09 | 300,000 | D | S |
| 05 Dec, 2024 | Nathan Mazurek | Stock Option (Right to Buy) | A | 10,000 | $0.00 | 10,000 | D | A |
| 05 Dec, 2024 | Wojciech Michalec | Common Stock, par value $0.001 per share | A | 50,000 | - | 315,000 | D | A |
| 05 Dec, 2024 | David Tesler | Stock Option (Right to Buy) | A | 10,000 | $0.00 | 10,000 | D | A |
| 05 Dec, 2024 | Yossi Cohn | Common Stock, par value $0.001 per share | A | 1,000 | $3.68 | 2,000 | D | M |
| 05 Dec, 2024 | Jonathan Tulkoff | Stock Option (Right to Buy) | A | 10,000 | $0.00 | 10,000 | D | A |
| 05 Dec, 2024 | Thomas Klink | Stock Option (Right to Buy) | A | 10,000 | $0.00 | 10,000 | D | A |
| 04 Dec, 2024 | Ian Ross | COMMON STOCK, PAR VALUE $0.001 PER SHARE | D | 1,000 | $6.01 | 22,500 | D | S |
| 05 Dec, 2024 | Kytchener Stevenson Whyte | Stock Option (Right to Buy) | A | 10,000 | $0.00 | 10,000 | D | A |
| 05 Dec, 2024 | Ian Ross | Stock Option (Right to Buy) | A | 10,000 | $0.00 | 10,000 | D | A |
| 05 Dec, 2024 | Yossi Cohn | Common Stock, par value $0.001 per share | A | 10,000 | $1.68 | 12,000 | D | M |
| 05 Dec, 2024 | Yossi Cohn | Common Stock, par value $0.001 per share | A | 10,000 | $3.31 | 22,000 | D | M |
| 05 Dec, 2024 | Yossi Cohn | Common Stock, par value $0.001 per share | A | 1,500 | $3.17 | 23,500 | D | M |
| 05 Dec, 2024 | Yossi Cohn | Stock Option (Right to Buy) | D | 1,000 | $0.00 | 0 | D | M |
| 05 Dec, 2024 | Yossi Cohn | Stock Option (Right to Buy) | D | 10,000 | $0.00 | 0 | D | M |