PSIX POWER SOLUTIONS INTERNATIONAL, INC. Insider Trading

10% owner Weichai America sells 79,839 shares ($7.5M) across 4 transactions at $91.72–$94.33; retains 10.6M shares post-sale

Weichai America, a 10% shareholder in PSIX, executed 4 separate open-market sales on 2025-09-11, selling 79,839 shares (79.8K shares) totaling $7,461,416.78 ($7.5M) at prices ranging from $91.72 to $94.33, with a blended average of $93.46. The reduction represents -0.7% of pre-transaction holdings, leaving the filer with 10,599,759 shares (10.60M shares) post-sale. PSIX trades at $95.52 currently, +11.5% over the prior 30 days and +81.1% over 90 days, placing the stock at -4.2% from its 52-week high of $99.70. The sale occurred one day after 5 prior sell transactions by the same filer at this ticker (2025-09-10), establishing a pattern of sequential divestitures. Weichai America's cross-ticker track record shows 20 prior sells across all tickers; no outcome measurement is yet available for the 5 same-ticker sales from 2025-09-10 or for this 2025-09-11 filing.

10% owner Weichai America sells 36,554 shares (36.6K) at $90.28–$95.20 for $3.4M on 2025-09-10

Weichai America, holding 10.68M shares post-transaction, executed 6 separate sales totaling 36,554 shares for $3,378,488.21 at a blended average price of $92.42 on 2025-09-10. This represents a -0.3% reduction in the filer's holdings. The transaction occurred while the stock trades near its 52-week high of $99.70 (currently $94.41, or -5.3% from peak) and follows strong momentum: the stock is +4.4% over 30 days and +89.1% over 90 days. The filer's cross-ticker track record shows 20 prior sells with no measurable timing pattern; at this specific ticker (PSIX), 5 prior trades have been recorded, with recent activity on 2025-09-11 and 2025-08-26, none yet measurable in outcome. Fundamentally, PSIX reports revenue of $191,907,000.00 and net income of $51,212,000.00 with a P/E of 19.59, suggesting the company is profitable and reasonably valued; annual revenue growth stands at +3.7%.

CEO Xykis Constantine sells entire 7,854-share position in PSIX for $717,172.30 at $91.31 (now $94.58)

Xykis Constantine, CEO of Power Solutions International, executed a complete liquidation of his equity stake, selling 7,854 shares at $91.31 on September 9, 2025, for a total of $717,172.30. This represents -100.0% of his pre-transaction holdings, leaving him with zero shares. The sale occurred 5.1% below the 52-week high of $99.70 and at $3.27 below the current price of $94.58. His cross-ticker track record shows 2 prior sells with an average 30-day return of -1.3%, and at this same ticker (PSIX), two prior sales on August 12 posted 30-day returns of -1.0% and -1.7% respectively. The company's fundamentals show revenue of $191,907,000.00 and net income of $51,212,000.00 (latest quarter), with a P/E of 19.62 and market cap of $2,178,162,834.68. A complete exit by the CEO warrants examination of his motivations and timing context.

Weichai America (10% owner) sold 94,047 shares of PSIX for $7.8M across 10 tranches on 2025-08-26, blended at $83.28.

A substantial liquidation by Weichai America, the 10% beneficial owner of Power Solutions International, consisting of 10 separate sales totaling 94,047 shares for $7,832,203.80 executed on a single day. The tranches ranged from $80.66 to $89.00 per share, with a blended average of $83.28, representing a 0.9% reduction in the filer's post-transaction holdings of 10.72M shares. This filing follows a series of five prior sales by the same filer on 2025-08-25 (the preceding day), suggesting a coordinated liquidation sequence. The current stock price of $84.90 sits 14.8% below the 52-week high of $99.70, despite a 90-day gain of +100.4%, indicating the filer is exiting during a period of elevated valuation relative to recent lows but below recent peaks. The company's fundamentals remain solid—$191.9M in quarterly revenue, $51.2M net income, and a 17.61 P/E—but the concentration and timing of large share dispositions by a major shareholder warrant investor attention to any broader liquidity or strategic-intent signals.

Weichai America (10% owner) sold 51,426 shares for $4.7M at blended $91.00; stock now $81.46, -18.3% from 52-week high

Weichai America, a 10% holder of PSIX, executed 6 separate sales totaling 51,426 shares for $4,679,926.61 on 2025-08-25, reducing holdings by 0.5% to 10,810,199 shares. The sales occurred at prices ranging from $88.78 to $93.18, with a blended average price of $91.00, while the current price is $81.46, representing an 18.3% decline from the 52-week high of $99.70. This substantial transaction by a major stakeholder warrants close examination of the timing relative to recent price action and whether material events preceded or should be expected to follow the sale.

CFO Li Xun sells 8,000 shares (93.7% of holdings) in 4 separate transactions at $91.60–$93.30, reducing stake to 521 shares; net proceeds $738,900 vs $27.8K buy.

Li Xun, POWER SOLUTIONS INTERNATIONAL's CFO, executed 4 separate sales totaling 8,000 shares for $738,891.60 on 2025-08-25, concurrent with a single 300-share purchase for $27,846.00—a transaction sequence that reduced his holdings from 8,221 shares to 521 shares, a 93.7% reduction. The sales occurred at prices ($91.60–$93.30) well above the current price of $81.46 and near the 52-week high of $99.70, capturing significant value amid strong near-term performance (90-day gain of +98.0%). The near-complete exit of his stake—leaving only 521 shares post-transaction—represents a material reduction in insider exposure despite the company's solid fundamentals (P/E of 16.90, $51.2M net income last quarter, $191.9M revenue). The disproportionate sell-to-buy ratio and magnitude of the stock reduction warrant examination of the reasoning and timing context behind this substantial portfolio action.

10% owner Weichai America Corp. sells 87,210 shares at blended avg $88.28 for $7.7M on 2025-08-22

Weichai America Corp., a 10% owner of POWER SOLUTIONS INTERNATIONAL, INC., executed 11 separate sales totaling 87,210 shares for $7,698,956.97 on 2025-08-22, reducing its holdings from 10,948,835 shares to 10,861,625 shares (-0.8%). The sales were executed across a price range of $81.57 to $91.20, with a blended average of $88.28. The current stock price of $82.74 is 17.0% below the 52-week high of $99.70 and 8.6% lower than 30 days ago, indicating the stock has declined significantly since these sales. Weichai maintains substantial ownership post-transaction and the company shows solid fundamentals (P/E of 17.17, revenue growth of 3.7%, net income of $51.2M), but the magnitude of the sale and the subsequent price decline warrant investor attention to whether this represents a material shift in major shareholder positioning.

Weichai America (10% owner) sells 42,314 shares at $80.41–$83.26 for $3.5M; retains 10.95M shares post-transaction

Weichai America Corp., holding 10% of PSIX, conducted 4 separate sales totaling 42,314 shares for $3,481,021.61 on 2025-08-21, with transaction prices ranging from $80.41 to $83.26 and a blended average of $82.27. The sale represents a 0.4% reduction in the filer's pre-transaction holdings of 10,991,149 shares, leaving 10.95M shares post-transaction. At the current price of $88.47, PSIX is down 2.3% over 30 days but up 115.9% over 90 days from a 52-week low of $16.11, suggesting the stock has appreciated significantly. The filer's cross-ticker track record shows 20 prior sells; timing outcomes for this sale cannot yet be measured due to the recent filing date. PSIX fundamentals show revenue of $191,907,000 (latest quarter) with net income of $51,212,000 and an 18.35 P/E, indicating profitability in a $2.0B market-cap company.

10% Owner Weichai America sells 15,802 shares at $80.50 avg for $1.27M, retains 10.99M shares at PSIX

Weichai America Corp., a 10% shareholder in POWER SOLUTIONS INTERNATIONAL, INC., executed two separate sales on 2025-08-20, selling 15,797 shares at $80.50 and 5 shares at $81.00, totaling 15,802 shares for $1,272,014.53 at a blended average price of $80.50. This represents a -0.1% reduction of pre-transaction holdings, leaving the insider with 10.99M shares post-transaction. The current price of $91.26 stands -8.5% from the 52-week high of $99.70, and the stock has appreciated +135.8% over the prior 90 days. The transaction occurred at prices ($80.50–$81.00) that are $10.76 below the current market level, suggesting the insider sold into relative strength within the stock's recent rally. No forward-looking timing characterization can be drawn from prior same-ticker trades at PSIX, as measurable 90-day outcomes are not yet available for any of the five prior trades at this ticker.

Weichai America (10% owner) sold 79,670 shares ($6.5M) across 5 transactions on 2025-08-19 at blended $81.08, retaining 11.01M shares (down 0.7%)

Weichai America executed a $6,459,803.65 reduction across 5 separate sales on 2025-08-19, disposing of 79,670 shares at prices ranging from $80.24 to $84.32. The shareholder retains 11,006,951 shares post-transaction, representing a modest 0.7% reduction in position size. The sales occurred while PSIX traded near its 52-week high of $99.70 (current price $82.40, -17.4% from peak), though the stock has appreciated 112.9% over 90 days. The company demonstrates solid fundamentals with annual revenue growth of 3.7%, a P/E of 17.10, and net income of $51,212,000.00 on $191,907,000.00 revenue in the latest quarter. As a 10% owner conducting a partial stake reduction, this represents a measured capital reallocation rather than a full liquidation.