PSIX · Insider Trading
Power Solutions International, Inc. Common Stock
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-17 | Nan (Richard) Hu | Chief Executive Officer | A | +5,867 deriv. | — |
| 2026-04-17 | Zhaoying Du | GC and Corp Secy | A | +1,492 deriv. | — |
| 2026-04-17 | Xun Li | CFO | A | +1,665 deriv. | — |
| 2026-02-17 | Xun Li | CFO | MIXED | +4,071 | −$302.94K |
| 2025-12-12 | Hong He | Director | A | +5,000 | — |
| 2025-12-12 | Courtney C. Shea | Director | A | +5,000 | — |
| 2025-12-12 | Zhaoying Du | GC and Corp Secy | A | +700 deriv. | — |
| 2025-12-12 | Frank P Simpkins | Director | A | +5,000 | — |
| 2025-09-15 | Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | Sell | −239,517 | −$22.38M |
| 2025-09-12 | Hong He | Director | Sell | −2,500 | −$236.00K |
| 2025-09-12 | Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | Sell | −109,662 | −$10.14M |
| 2025-09-11 | Constantine Xykis | CEO | Sell | −7,854 | −$717.17K |
| 2025-09-11 | Hong He | Director | Sell | −4,000 | −$365.77K |
| 2025-09-10 | Hong He | Director | Sell | −1,000 | −$89.00K |
| 2025-08-28 | Weichai Power Co., Ltd. | 10%+ Owner | Sell | −282,141 | −$23.50M |
| 2025-08-27 | Frank P Simpkins | Director | Sell | −10,000 | −$916.38K |
| 2025-08-27 | Xun Li | CFO | MIXED | −7,700 | −$711.05K |
| 2025-08-27 | Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | Sell | −154,278 | −$14.04M |
| 2025-08-26 | Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | Sell | −261,630 | −$23.10M |
| 2025-08-25 | Weichai Power Co., Ltd. | 10%+ Owner | Sell | −126,942 | −$10.44M |
| 2025-08-22 | Weichai America Corp. | 10%+ Owner | Sell | −47,406 | −$3.82M |
| 2025-08-21 | Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | Sell | −239,010 | −$19.38M |
| 2025-08-20 | Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | Sell | −375,660 | −$31.94M |
| 2025-08-19 | Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | Sell | −348,411 | −$28.97M |
| 2025-08-18 | Weichai Power Co., Ltd. | 10%+ Owner | Sell | −407,538 | −$34.63M |
| 2025-08-15 | Hong He | Director | Sell | −2,500 | −$225.06K |
| 2025-08-15 | Weichai Power Co., Ltd. | 10%+ Owner | Sell | −486,339 | −$43.69M |
| 2025-08-14 | Constantine Xykis | CEO | Sell | −26,005 | −$2.49M |
| 2025-08-14 | Xun Li | CFO | MIXED | +8,221 | −$617.06K |
| 2025-08-14 | Frank P Simpkins | Director | Sell | −5,000 | −$474.52K |
| 2025-08-14 | Weichai Power Co., Ltd. | 10%+ Owner | Sell | −371,466 | −$34.85M |
| 2025-07-22 | Constantine Xykis | CEO | MIXED | — | −$1.30M |
| 2025-06-13 | Constantine Xykis | CEO | MIXED | — | −$1.65M |
| 2025-06-12 | Constantine Xykis | CEO | MIXED | — | −$918.85K |
| 2025-06-04 | Constantine Xykis | CEO | MIXED | — | −$918.85K |
| 2025-04-23 | Gary S Winemaster | — | G | −760,172 | — |
| 2025-04-15 | Gary S Winemaster | 10%+ Owner | Sell | −2,000 | −$46.55K |
| 2025-01-27 | Gary S Winemaster | 10%+ Owner | Sell | −52,821 | −$2.08M |
| 2025-01-17 | Gary S Winemaster | 10%+ Owner | Sell | −15,181 | −$562.47K |
| 2024-12-30 | Gary S Winemaster | 10%+ Owner | Sell | −56,729 | −$1.61M |
| 2024-12-16 | Hong He | Director | A | +5,000 | — |
| 2024-12-16 | Kenneth W Landini | Director | A | +5,000 | — |
| 2024-12-16 | Frank P Simpkins | Director | A | +5,000 | — |
| 2024-12-04 | Gary S Winemaster | 10%+ Owner | Sell | −25,000 | −$790.57K |
| 2024-11-07 | Gary S Winemaster | 10%+ Owner | Sell | −4,296 | −$94.91K |
| 2024-10-29 | Gary S Winemaster | 10%+ Owner | Sell | −4,918 | −$123.98K |
| 2024-10-09 | Constantine Xykis | CEO | MIXED | +8,520 | −$157.05K |
| 2024-10-07 | Neil Gagnon | — | — | — | — |
| 2024-10-01 | Gary S Winemaster | 10%+ Owner | Sell | −31,068 | −$633.32K |
| 2024-09-26 | Gary S Winemaster | 10%+ Owner | Sell | −11,276 | −$225.83K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Weichai America Corp. | 10%+ Owner | 10,991,149 | $518.23M |
| Weichai Power Co., Ltd. | 10%+ Owner | 10,719,715 | $505.43M |
| Shandong Heavy Industry Group Co., Ltd. | 10%+ Owner | 10,630,278 | $501.22M |
| Gary S Winemaster | 10%+ Owner | 2,184,790 | $103.01M |
| Kenneth W Landini | Director | 59,000 | $2.78M |
| Frank P Simpkins | Director | 30,000 | $1.41M |
| Hong He | Director | 23,750 | $1.12M |
| Xun Li | CFO | 8,021 | $378.19K |
| Courtney C. Shea | Director | 5,000 | $235.75K |
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.
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.