Power Solutions International, Inc. (PSIX) Insider Ownership

Historic Insider Ownership Trends

PSIX's three largest insider shareholders as of June 02, 2026 are America Corp. Weichai (TenPercentOwner, 10.60Mn shares), Gary S Winemaster (President, Ceo Cob, 2.18Mn shares), Neil Gagnon (TenPercentOwner, 1.41Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Neil Gagnon - 507,869 902,205 02 May, 2024
Frank P Simpkins - 30,000 0 12 Dec, 2025
Kenneth W Landini - 59,000 0 16 Dec, 2024
Gary S Winemaster President, Ceo Cob 2,184,109 0 23 Apr, 2025
America Corp. Weichai - 0 10,599,759 15 Sep, 2025
Courtney C. Shea - 5,000 0 12 Dec, 2025
Hong He - 23,750 0 12 Dec, 2025
Constantine Xykis Ceo 33,859 0 09 Oct, 2024
Guogang Wu - 4,304 0 24 Jan, 2022
Fabrizio Mozzi - 7,917 0 16 Sep, 2022
Xun Li Cfo 4,592 0 17 Feb, 2026

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
06 Mar, 2026 Zhaoying Du Phantom Stock A 1,492 $0.00 1,492 D A
06 Mar, 2026 Xun Li Phantom Stock A 1,665 $0.00 1,665 D A
12 Feb, 2026 Xun Li Common Stock A 7,500 $2.00 8,021 D M
12 Feb, 2026 Xun Li Common Stock D 3,429 $92.72 4,592 D F
12 Feb, 2026 Xun Li Stock Appreciation Rights D 7,500 $0.00 7,500 D M
11 Dec, 2025 Frank P Simpkins Common Stock A 5,000 $0.00 30,000 D A
11 Dec, 2025 Courtney C. Shea Common Stock A 5,000 $0.00 5,000 D A
11 Dec, 2025 Hong He Common Stock A 5,000 $0.00 23,750 D A
11 Dec, 2025 Frank P Simpkins Common Stock A 5,000 $0.00 30,000 D A
11 Dec, 2025 Courtney C. Shea Common Stock A 5,000 $0.00 5,000 D A
11 Dec, 2025 Zhaoying Du Stock Appreciation Right A 700 $0.00 700 D A
11 Dec, 2025 Courtney C. Shea Common Stock A 5,000 $0.00 5,000 D A
11 Dec, 2025 Frank P Simpkins Common Stock A 5,000 $0.00 30,000 D A
11 Sep, 2025 America Corp. Weichai Common Stock D 6,738 $91.72 10,672,860 I S
11 Sep, 2025 America Corp. Weichai Common Stock D 6,738 $91.72 10,672,860 I S
11 Sep, 2025 America Corp. Weichai Common Stock D 6,738 $91.72 10,672,860 I S
11 Sep, 2025 America Corp. Weichai Common Stock D 19,351 $92.46 10,653,509 I S
11 Sep, 2025 America Corp. Weichai Common Stock D 19,351 $92.46 10,653,509 I S
11 Sep, 2025 America Corp. Weichai Common Stock D 19,351 $92.46 10,653,509 I S
11 Sep, 2025 America Corp. Weichai Common Stock D 23,231 $93.64 10,630,278 I S