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Weichai America Corp., together with Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd., filed Amendment No. 8 to their Schedule 13D for Power Solutions International, Inc. (PSIX) to report open-market sales of Common Stock under Rule 144. From August 18–21, 2025, Weichai America sold a total of 263,006 shares, reducing the Reporting Persons' combined beneficial ownership to 10,948,835 shares, or 47.5% of the outstanding common stock based on 23,029,846 shares outstanding as of July 31, 2025. The filing lists daily dispositions and weighted average prices per share ranging from about $80.00 to $89.83. The amendment states no other transactions occurred since the prior Schedule 13D.
Power Solutions International (PSIX) notice reports a proposed sale of 10,000 shares of Common Stock through Merrill Lynch on Nasdaq with an aggregate market value of $912,600 and an approximate sale date of 08/25/2025. The filing lists total shares outstanding as 23,029,846. The securities were acquired as compensatory grants: 5,000 shares on 07/13/2018 and 5,000 shares on 07/10/2024. The filing also reports a sale during the past three months: Frank Simpkins sold 5,000 shares on 08/12/2025 for $474,274. The notice includes the signers representation that they are not aware of undisclosed material adverse information about the issuer.
Power Solutions International (PSIX) filed a Form 144 reporting a proposed sale of 8,221 shares of common stock to be executed on 08/25/2025 through Morgan Stanley/Morgan Stanley Smith Barney LLC with E*TRADE as the broker. The filing shows the shares were acquired on 08/12/2025 through the exercise of SARs and the aggregate market value of the proposed sale is listed at $750,248. The company had 23,029,846 shares outstanding per the form. The filer reports no securities sold in the past three months and certifies they are not aware of undisclosed material adverse information about the issuer.
Weichai America Corp., together with Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd., reported selling a total of 15,802 shares of POWER SOLUTIONS INTERNATIONAL common stock on 20 Aug 2025 in broker-dealer trades conducted under Rule 144 at prices around $80–$81 per share.
The common stock is held indirectly through these Weichai-affiliated entities, which now report post-transaction indirect holdings of 10,991,149 POWER SOLUTIONS INTERNATIONAL common shares, with no individual having beneficial ownership over these shares.
Power Solutions International insiders sold 79,670 shares on 08/19/2025 under Rule 144, reducing the Reporting Persons' indirect holdings to 11,006,951 shares. The Form 4 is jointly filed by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd., each identified as a director and 10% owner. Sales occurred in multiple transactions at weighted-average prices ranging approximately from $80.00 to $84.65 per share. The report states the transactions were broker-dealer sales conducted pursuant to Rule 144 and notes the Reporting Persons share voting and dispositive power over the reported shares.
Power Solutions International insiders reported coordinated sales on 08/18/2025. The report is filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd. and shows a series of broker-dealer sales conducted pursuant to Rule 144. Collectively, the Reporting Persons disposed of 125,220 shares of Power Solutions International common stock in multiple transactions at weighted average prices reported in ranges from $80.00 up to $89.83. After the transactions the Reporting Persons report beneficial ownership of 11,086,621 shares (indirect). Exhibits include powers of attorney incorporated by reference.
Power Solutions International, Inc. (PSIX) reported a joint Form 4 filed by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd. showing multiple broker-dealer sales of Common Stock on 08/15/2025 under Rule 144. The Reporting Persons sold a total of 116,137 shares in seven tranches at weighted-average prices ranging from $80.4075 to $86.0516. After these dispositions the Reporting Persons beneficially own approximately 11.21 million shares and retain shared voting and dispositive power. The report states the sales were effected by broker-dealers and lists powers of attorney as exhibits.
Weichai-affiliated holders reported an open-market sale of Power Solutions International (PSIX) shares that reduced their combined stake to 48.7%. Weichai America, Weichai Power and Shandong Heavy Industry filed Amendment No. 7 to their Schedule 13D to disclose that Weichai America sold 251,983 shares under Rule 144 in two trading sessions on August 14-15, 2025. The filing lists the weighted average prices: $84.9758 on August 14 and $83.1604 on August 15, with transaction price ranges provided for each day. The aggregate post-sale beneficial ownership is reported as 11,211,841 shares, based on 23,029,846 shares outstanding as of July 31, 2025.
Power Solutions International insiders sold 135,846 shares on 08/14/2025 under Rule 144, according to a joint Form 4 filed by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd. The sales were broker-dealer transactions executed at multiple prices, with weighted-average reported prices per lot ranging from $81.8007 to $90.2445 and underlying per-trade ranges from $81.58 to $90.3675. After these dispositions the Reporting Persons report 11,327,978 shares of common stock as indirectly beneficially owned. The report is signed by authorized representatives and references two powers of attorney as exhibits.
Power Solutions International insiders affiliated with Weichai disclosed multiple brokered Rule 144 sales on 08/13/2025. The Reporting Persons sold a total of 162,113 shares in a series of transactions at weighted-average prices ranging approximately from $86.09 to $96.335. After these sales, the Reporting Persons collectively continue to beneficially own 11,463,824 shares on an indirect basis and retain shared voting and dispositive power. The report was filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd., and includes executed powers of attorney incorporated by reference.