Power Solutions International, Inc. has 8 Schedule 13D or 13G filings on record since 2025-08-07. 3 holders' latest filing reports 5% or more of common stock, par value $0.001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Weichai America Corp. | 46.5% | 10,716,152 | SCHEDULE 13D/A, 2025-08-28 | 2025-08-26 |
| Point72 Asset Management, L.P. | 6.5% | 1,497,155 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
| Gary S. Winemaster | 6.3% | 1,455,259 | SCHEDULE 13D/A, 2025-09-22 | 2025-09-18 |
Purpose of Transaction (Item 4)
Weichai America Corp.
Item 4 is hereby amended and supplemented by adding the following: On August 8, 2025, Weichai Amercia filed a notice with the SEC on Form 144 relating to the proposed sale of up to 1,150,000 shares of Common Stock in accordance with Rule 144. From August 22, 2025 to August 26, 2025, the Reporting Persons sold an aggregate of 232,683 shares of Common Stock in a series of open-market transactions through a broker-dealer.Item 4 of the SCHEDULE 13D/A filed 2025-08-28
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-07 | Gary S. Winemaster | 8.4% | SCHEDULE 13D/A |
| 2025-08-15 | Weichai America Corp. | 49.8% | SCHEDULE 13D/A |
| 2025-08-19 | Weichai America Corp. | 48.7% | SCHEDULE 13D/A |
| 2025-08-25 | Weichai America Corp. | 47.5% | SCHEDULE 13D/A |
| 2025-08-28 | Weichai America Corp. | 46.5% | SCHEDULE 13D/A |
| 2025-09-22 | Gary S. Winemaster | 6.3% | SCHEDULE 13D/A |
| 2026-05-22 | Point72 Asset Management, L.P. | 5% | SCHEDULE 13G |
| 2026-08-14 | Point72 Asset Management, L.P. | 6.5% | SCHEDULE 13G/A |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.