PSIX (Power Solutions International, Inc. Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by PSIX 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.
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-17 | Nan (Richard) Hu | Chief Executive Officer | A | — | — |
| 2026-04-17 | Zhaoying Du | GC and Corp Secy | A | — | — |
| 2026-04-17 | Xun Li | CFO | A | — | — |
| 2026-02-17 | Xun Li | CFO | MIXED | — | — |
| 2025-12-12 | Hong He | Director | A | — | — |
| 2025-12-12 | Courtney C. Shea | Director | A | — | — |
| 2025-12-12 | Zhaoying Du | GC and Corp Secy | A | — | — |
| 2025-12-12 | FRANK P SIMPKINS | Director | A | — | — |
| 2025-09-15 | Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | Sell | — | — |
| 2025-09-12 | Hong He | Director | Sell | — | — |
| 2025-09-12 | Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | Sell | — | — |
| 2025-09-11 | Constantine Xykis | CEO | Sell | — | — |
| 2025-09-11 | Hong He | Director | Sell | — | — |
| 2025-09-10 | Hong He | Director | Sell | — | — |
| 2025-08-28 | Weichai Power Co., Ltd. | 10%+ Owner | Sell | — | — |
| 2025-08-27 | FRANK P SIMPKINS | Director | Sell | — | — |
| 2025-08-27 | Xun Li | CFO | MIXED | — | — |
| 2025-08-27 | Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | Sell | — | — |
| 2025-08-26 | Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | Sell | — | — |
| 2025-08-25 | Weichai Power Co., Ltd. | 10%+ Owner | Sell | — | — |
| 2025-08-22 | Weichai America Corp. | 10%+ Owner | Sell | — | — |
| 2025-08-21 | Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | Sell | — | — |
| 2025-08-20 | Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | Sell | — | — |
| 2025-08-19 | Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | Sell | — | — |
| 2025-08-18 | Weichai Power Co., Ltd. | 10%+ Owner | Sell | — | — |
| 2025-08-15 | Hong He | Director | Sell | — | — |
| 2025-08-15 | Weichai Power Co., Ltd. | 10%+ Owner | Sell | — | — |
| 2025-08-14 | Constantine Xykis | CEO | Sell | — | — |
| 2025-08-14 | Xun Li | CFO | MIXED | — | — |
| 2025-08-14 | FRANK P SIMPKINS | Director | Sell | — | — |
| 2025-08-14 | Weichai Power Co., Ltd. | 10%+ Owner | Sell | — | — |
| 2025-07-22 | Constantine Xykis | CEO | MIXED | — | — |
| 2025-06-13 | Constantine Xykis | CEO | MIXED | — | — |
| 2025-06-12 | Constantine Xykis | CEO | MIXED | — | — |
| 2025-06-04 | Constantine Xykis | CEO | MIXED | — | — |
| 2025-04-23 | Gary S Winemaster | — | G | — | — |
| 2025-04-15 | Gary S Winemaster | 10%+ Owner | Sell | — | — |
| 2025-01-27 | Gary S Winemaster | 10%+ Owner | Sell | — | — |
| 2025-01-17 | Gary S Winemaster | 10%+ Owner | Sell | — | — |
| 2024-12-30 | Gary S Winemaster | 10%+ Owner | Sell | — | — |
| 2024-12-16 | Hong He | Director | A | — | — |
| 2024-12-16 | Kenneth W Landini | Director | A | — | — |
| 2024-12-16 | FRANK P SIMPKINS | Director | A | — | — |
| 2024-12-04 | Gary S Winemaster | 10%+ Owner | Sell | — | — |
| 2024-11-07 | Gary S Winemaster | 10%+ Owner | Sell | — | — |
| 2024-10-29 | Gary S Winemaster | 10%+ Owner | Sell | — | — |
| 2024-10-09 | Constantine Xykis | CEO | MIXED | — | — |
| 2024-10-07 | Neil Gagnon | — | — | — | — |
| 2024-10-01 | Gary S Winemaster | 10%+ Owner | Sell | — | — |
| 2024-09-26 | Gary S Winemaster | 10%+ Owner | Sell | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 10,991,149 | — |
| — | 10%+ Owner | 10,719,715 | — |
| — | 10%+ Owner | 10,630,278 | — |
| — | Executive Vice President | 2,218,173 | — |
| — | 10%+ Owner | 2,184,790 | — |
| — | 10%+ Owner | 531,306 | — |
| — | CEO and President | 76,006 | — |
| — | Director | 59,000 | — |
| — | Chief Technical Officer | 35,605 | — |
| — | Director | 30,000 | — |
| — | Director | 23,750 | — |
| — | Chief Financial Officer | 20,781 | — |
| — | Director | 15,000 | — |
| — | CFO | 8,021 | — |
| — | Director | 7,917 | — |
| — | Director | 7,800 | — |
| — | Director | 5,000 | — |
| — | Director | 4,304 | — |
| — | Chief Financial Officer | 3,129 | — |
| — | Chief Financial Officer | 1,000 | — |
| — | Chief Operating Officer | 510 | — |
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 PSIX quote page; the site-wide leaderboard is on the insider transactions hub.