Form 4 for PSIX POWER SOLUTIONS INTERNATIONAL, INC.
Accepted 2025-08-14 00:00:00 ET · period of report 2025-08-12 · accession 0001213900-25-076588 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MI | 2025-08-14 | 2025-08-12 | PSIX | Shandong Heavy Industry Group Co., Ltd. | 10% | S - Sale | $93.80 | -123.8K | 11.63M | -1% | -$11.62M |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-08-12 | S | D | 10,618 | $91.61 | 11,722,923 | I See Explanation of Responses | — | — | (F6) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.11 to $91.97, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth in this footnote. (F12) This report is filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd. (collectively, the "Reporting Persons"). Weichai America Corp. is the direct owner of the Common Stock referenced in this report and shares the power to vote and the power to dispose of all of such shares of Common Stock with the other Reporting Persons. No individual has beneficial ownership over the Common Stock beneficially owned by the Reporting Persons. |
| 2 | Common | Common Stock | 2025-08-12 | S | D | 12,651 | $92.42 | 11,710,272 | I See Explanation of Responses | — | — | (F7) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.00 to $92.98, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth in this footnote. (F12) This report is filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd. (collectively, the "Reporting Persons"). Weichai America Corp. is the direct owner of the Common Stock referenced in this report and shares the power to vote and the power to dispose of all of such shares of Common Stock with the other Reporting Persons. No individual has beneficial ownership over the Common Stock beneficially owned by the Reporting Persons. |
| 3 | Common | Common Stock | 2025-08-12 | S | D | 12,436 | $93.65 | 11,697,836 | I See Explanation of Responses | — | — | (F8) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.005 to $93.98, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth in this footnote. (F12) This report is filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd. (collectively, the "Reporting Persons"). Weichai America Corp. is the direct owner of the Common Stock referenced in this report and shares the power to vote and the power to dispose of all of such shares of Common Stock with the other Reporting Persons. No individual has beneficial ownership over the Common Stock beneficially owned by the Reporting Persons. |
| 4 | Common | Common Stock | 2025-08-12 | S | D | 15,838 | $94.47 | 11,681,998 | I See Explanation of Responses | — | — | (F9) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $94.00 to $94.995, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth in this footnote. (F12) This report is filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd. (collectively, the "Reporting Persons"). Weichai America Corp. is the direct owner of the Common Stock referenced in this report and shares the power to vote and the power to dispose of all of such shares of Common Stock with the other Reporting Persons. No individual has beneficial ownership over the Common Stock beneficially owned by the Reporting Persons. |
| 5 | Common | Common Stock | 2025-08-12 | S | D | 46,827 | $95.52 | 11,635,171 | I See Explanation of Responses | — | — | (F10) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $95.00 to $95.9975, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth in this footnote. (F12) This report is filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd. (collectively, the "Reporting Persons"). Weichai America Corp. is the direct owner of the Common Stock referenced in this report and shares the power to vote and the power to dispose of all of such shares of Common Stock with the other Reporting Persons. No individual has beneficial ownership over the Common Stock beneficially owned by the Reporting Persons. |
| 6 | Common | Common Stock | 2025-08-12 | S | D | 8,517 | $90.28 | 11,733,541 | I See Explanation of Responses | — | — | (F5) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.00 to $90.99, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth in this footnote. (F12) This report is filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd. (collectively, the "Reporting Persons"). Weichai America Corp. is the direct owner of the Common Stock referenced in this report and shares the power to vote and the power to dispose of all of such shares of Common Stock with the other Reporting Persons. No individual has beneficial ownership over the Common Stock beneficially owned by the Reporting Persons. |
| 7 | Common | Common Stock | 2025-08-12 | S | D | 58 | $97.02 | 11,625,937 | I See Explanation of Responses | — | — | (F12) This report is filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd. (collectively, the "Reporting Persons"). Weichai America Corp. is the direct owner of the Common Stock referenced in this report and shares the power to vote and the power to dispose of all of such shares of Common Stock with the other Reporting Persons. No individual has beneficial ownership over the Common Stock beneficially owned by the Reporting Persons. |
| 8 | Common | Common Stock | 2025-08-12 | S | D | 478 | $87.88 | 11,749,281 | I See Explanation of Responses | — | — | (F2) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.83 to $87.89, inclusive. The Reporting Persons (as defined below) undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth in this footnote. (F12) This report is filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd. (collectively, the "Reporting Persons"). Weichai America Corp. is the direct owner of the Common Stock referenced in this report and shares the power to vote and the power to dispose of all of such shares of Common Stock with the other Reporting Persons. No individual has beneficial ownership over the Common Stock beneficially owned by the Reporting Persons. |
| 9 | Common | Common Stock | 2025-08-12 | S | D | 5,874 | $88.48 | 11,743,407 | I See Explanation of Responses | — | — | (F3) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $88.00 to $88.965, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth in this footnote. (F12) This report is filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd. (collectively, the "Reporting Persons"). Weichai America Corp. is the direct owner of the Common Stock referenced in this report and shares the power to vote and the power to dispose of all of such shares of Common Stock with the other Reporting Persons. No individual has beneficial ownership over the Common Stock beneficially owned by the Reporting Persons. |
| 10 | Common | Common Stock | 2025-08-12 | S | D | 1,349 | $89.34 | 11,742,058 | I See Explanation of Responses | — | — | (F4) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.03 to $89.95, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth in this footnote. (F12) This report is filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd. (collectively, the "Reporting Persons"). Weichai America Corp. is the direct owner of the Common Stock referenced in this report and shares the power to vote and the power to dispose of all of such shares of Common Stock with the other Reporting Persons. No individual has beneficial ownership over the Common Stock beneficially owned by the Reporting Persons. |
| 11 | Common | Common Stock | 2025-08-12 | S | D | 9,176 | $96.19 | 11,625,995 | I See Explanation of Responses | — | — | (F11) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $96.00 to $96.89, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth in this footnote. (F12) This report is filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd. (collectively, the "Reporting Persons"). Weichai America Corp. is the direct owner of the Common Stock referenced in this report and shares the power to vote and the power to dispose of all of such shares of Common Stock with the other Reporting Persons. No individual has beneficial ownership over the Common Stock beneficially owned by the Reporting Persons. |