Power Solutions International, Inc. filings document Nasdaq-listed common stock and Form 8-K disclosures for an operating company focused on emission-certified engines and power systems. Recent records include Regulation FD releases for quarterly and annual financial results, business outlook commentary, and a completed acquisition adding fabricated steel components, switchgear subbases, electrical enclosure assemblies and fuel tanks for power generation products.
The company’s material-event filings also record governance and compensation matters, including officer appointments, board and committee changes, stockholder-designee directors and a cash-settled phantom unit plan tied to the market value of common stock. These disclosures frame capital structure, executive-compensation obligations, public communications and risk statements around PSI’s manufacturing and power-systems business.
He Hong, a director of Power Solutions International, Inc. (PSIX), reported an insider sale on Form 4. On 09/08/2025 He Hong sold 1,000 shares of the company's common stock at $89 per share and, after the transaction, beneficially owned 25,250 shares. The Form 4 was signed and filed with a datestamp of 09/10/2025. The filing identifies the reporting person as a director and indicates the report was filed by one reporting person.
Form 144 notice for proposed sale of securities. The filer reported an intended sale of 7,854 shares of Common Stock on 09/09/2025 through Wells Fargo Advisors with an aggregate market value of $662,799. The filing shows 23,029,846 shares outstanding. The securities to be sold were acquired on 10/01/2024 as a compensatory grant and recorded as 8,520 shares delivered on the same date via exercise of SARs. The filing also discloses a prior sale by Constantine Xykis of 26,005 shares on 08/12/2025 generating gross proceeds of $2,492,599. The notice includes the required signer representation about lack of undisclosed material adverse information.
Form 144 filing for Power Solutions International, Inc. (PSIX) reports a proposed sale of 4,000 common shares by a holder whose broker is Morgan Stanley Smith Barney LLC, with an aggregate market value of $365,773.85 and an approximate sale date of 09/09/2025 on NASDAQ. The shares were acquired on 07/10/2024 through restricted stock vesting under a registered plan and were received as compensation. The filing discloses two recent sales by the same person: 2,500 shares sold on 08/13/2025 for $225,065.75 and 1,000 shares sold on 09/08/2025 for $89,000.00. The issuer’s outstanding shares are listed as 23,029,846. The filer certifies they are not aware of undisclosed material adverse information about the issuer.
Power Solutions International, Inc. (PSIX) submitted a Form 144 notice for an intended insider sale. The filer plans to sell 1,000 common shares through Morgan Stanley Smith Barney on 09/08/2025 on NASDAQ with an indicated aggregate market value of $89,000. The company’s reported shares outstanding in the notice are 23,029,846. The shares to be sold were acquired on 07/10/2024 as restricted stock vesting under a registered plan and were paid as compensation. The filing also discloses a prior sale by the same person of 2,500 common shares on 08/13/2025 for gross proceeds of $225,065.75. The filer attests there is no undisclosed material adverse information about the issuer.
Power Solutions International, Inc. (PSIX) filed a Form 144 notifying a proposed sale of 7,000 common shares through Raymond James & Associates with an aggregate market value of $595,000. The securities were originally acquired on 05/23/2011 via a preferred stock conversion; the filing lists the acquisition amount as 19,000 shares. The approximate date of sale is 09/05/2025, and the issuer has 23,029,846 shares outstanding per the form. The filer reports no securities sold in the past three months and affirms they do not possess undisclosed material adverse information about the issuer.
Power Solutions International insiders sold substantial common stock holdings on 08/26/2025. The report is filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd., which together hold and share voting and dispositive power over the reported shares. Multiple block sales occurred through broker-dealer transactions executed pursuant to Rule 144, with individual lots sold at weighted-average prices ranging from about $80.66 to $89.00 per share. Following these dispositions, the Reporting Persons beneficially owned between 10,716,152 and 10,796,651 shares across the reported lines, held indirectly. The filing discloses the Rule 144 sales and includes powers of attorney referenced by exhibit.
Amendment No. 9 to Schedule 13D reports that Weichai America, Weichai Power and Shandong Heavy Industry Group (the Reporting Persons) collectively beneficially own 10,716,152 shares of Power Solutions International, Inc. (PSIX), representing 46.5% of the outstanding common stock based on 23,029,846 shares outstanding as of July 31, 2025. This amendment discloses open-market sales by Weichai America of 232,683 shares under Rule 144 executed from August 22–26, 2025, which reduced the aggregate ownership by more than 1% relative to the prior amendment. The filing provides per-date dispositions and weighted average prices for each trading day and states the Reporting Persons will provide detailed price-by-price sale data upon request.
Amendment No. 9 to Schedule 13D reports that Weichai America, Weichai Power and Shandong Heavy Industry Group (the Reporting Persons) collectively beneficially own 10,716,152 shares of Power Solutions International, Inc. (PSIX), representing 46.5% of the outstanding common stock based on 23,029,846 shares outstanding as of July 31, 2025. This amendment discloses open-market sales by Weichai America of 232,683 shares under Rule 144 executed from August 22–26, 2025, which reduced the aggregate ownership by more than 1% relative to the prior amendment. The filing provides per-date dispositions and weighted average prices for each trading day and states the Reporting Persons will provide detailed price-by-price sale data upon request.
Weichai-affiliated reporting persons (Weichai America Corp., Weichai Power Co., Ltd., and Shandong Heavy Industry Group Co., Ltd.) disclosed multiple broker-dealer sales of Power Solutions International, Inc. (PSIX) common stock on 08/25/2025 under Rule 144. The Form 4 shows six separate disposition entries totaling 51,426 shares sold at weighted-average prices ranging from about $88.53 to $93.37. Following these transactions the reporting group beneficially owned 10,810,199 shares (indirect ownership). The report was filed jointly and includes powers of attorney referenced by exhibit.
Frank P. Simpkins, a director of Power Solutions International, Inc. (PSIX), reported the sale of 10,000 shares of the issuer's common stock on 08/25/2025 at a weighted average price of $91.638 per share. After the reported sale, the filing shows the reporting person beneficially owned 25,000 shares directly. The filing notes the sale occurred in multiple transactions at prices ranging from $91.55 to $91.93 and offers to provide the exact allocation on request.
Li Xun, CFO of Power Solutions International, Inc. (PSIX), reported multiple transactions on 08/25/2025. The filings show the reporting person sold a total of 8,000 shares of common stock in several transactions at weighted-average prices in ranges from $91.40 to $93.30 per share and purchased 300 shares at $92.82. The Form 4 notes the purchase was matchable under Section 16(b) and that the reporting person paid the issuer $134.00 representing the full profit from the short-swing transaction. All holdings are reported as direct beneficial ownership.