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[Form 4] Power Solutions International, Inc. Insider Trading Activity

Filing Impact
(High)
Filing Sentiment
(Very Negative)
Form Type
4
Rhea-AI Filing Summary

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.

Insider di Power Solutions International hanno venduto 79.670 azioni il 19/08/2025 ai sensi della Rule 144, riducendo la detenzione indiretta dei Reporting Persons a 11.006.951 azioni. Il Modulo 4 猫 stato presentato congiuntamente da Weichai America Corp., Weichai Power Co., Ltd. e Shandong Heavy Industry Group Co., Ltd., ciascuna indicata come direttore e detentrice del 10%. Le vendite sono avvenute in pi霉 operazioni a prezzi medi ponderati compresi approssimativamente tra $80,00 e $84,65 per azione. Il rapporto specifica che le transazioni sono state eseguite da broker-dealer in conformit脿 alla Rule 144 e indica che i Reporting Persons condividono il potere di voto e di disposizione sulle azioni riportate.

Insiders de Power Solutions International vendieron 79.670 acciones el 19/08/2025 bajo la Regla 144, reduciendo la tenencia indirecta de las Personas Informantes a 11.006.951 acciones. El Formulario 4 fue presentado conjuntamente por Weichai America Corp., Weichai Power Co., Ltd. y Shandong Heavy Industry Group Co., Ltd., cada una identificada como directora y propietaria del 10%. Las ventas se realizaron en varias transacciones a precios promedio ponderados aproximadamente entre $80.00 y $84.65 por acci贸n. El informe indica que las operaciones las ejecutaron brokers-dealers conforme a la Regla 144 y se帽ala que las Personas Informantes comparten el poder de voto y de disposici贸n sobre las acciones informadas.

Power Solutions International鞚� 雮措秬鞛愲摛鞚� 2025雲� 8鞗� 19鞚� Rule 144鞐� 霐半澕 79,670欤茧ゼ 毵り皝頃橃棳 氤搓碃鞛愲摛鞚� 臧勳爲 氤挫湢 欤检嫕 靾橁皜 11,006,951欤茧 臧愳唽頄堨姷雼堧嫟. Form 4電� Weichai America Corp., Weichai Power Co., Ltd. 氚� Shandong Heavy Industry Group Co., Ltd.臧� 瓿惦彊 鞝滌稖頄堨溂氅�, 臧侅偓電� 鞚挫偓鞚挫瀽 10% 氤挫湢鞛愲 鞁濍硠霅橃柎 鞛堨姷雼堧嫟. 毵り皝鞚� 欤茧嫻 鞎� $80.00鞐愳劀 $84.65 靷澊鞚� 臧�欷戫弶攴犼皜瓴╈溂搿� 鞐煬 瓯半灅鞐� 瓯胳硱 鞚措（鞏挫鞀惦媹雼�. 氤搓碃靹滌棎電� 頃措嫻 瓯半灅臧� Rule 144鞐� 霐半澕 敫岆旎�-霐滊煬毳� 韱淀暣 鞚措（鞏挫鞙茧┌ 氤搓碃鞛愲摛鞚� 氤搓碃霅� 欤检嫕鞐� 雽�頃� 鞚橁舶甓� 氚� 觳橂秳甓岇潉 瓿奠湢頃滊嫟瓿� 氇呾嫓霅橃柎 鞛堨姷雼堧嫟.

Des initi茅s de Power Solutions International ont vendu 79 670 actions le 19/08/2025 en vertu de la Rule 144, r茅duisant les avoirs indirects des personnes d茅clarante 脿 11 006 951 actions. Le formulaire 4 a 茅t茅 d茅pos茅 conjointement par Weichai America Corp., Weichai Power Co., Ltd. et Shandong Heavy Industry Group Co., Ltd., chacune identifi茅e comme administrateur et d茅tentrice de 10 %. Les ventes ont eu lieu lors de plusieurs transactions 脿 des prix moyens pond茅r茅s d'environ 80,00 $ 脿 84,65 $ par action. Le rapport pr茅cise que les op茅rations ont 茅t茅 ex茅cut茅es par des courtiers-n茅gociants conform茅ment 脿 la Rule 144 et indique que les personnes d茅clarantes partagent le pouvoir de vote et de disposition sur les actions d茅clar茅es.

Insider von Power Solutions International verkauften am 19.08.2025 gem盲脽 Rule 144 insgesamt 79.670 Aktien, wodurch die indirekten Best盲nde der berichtenden Personen auf 11.006.951 Aktien sanken. Das Formular 4 wurde gemeinsam eingereicht von Weichai America Corp., Weichai Power Co., Ltd. und Shandong Heavy Industry Group Co., Ltd., die jeweils als Direktor und 10%-Eigent眉mer ausgewiesen sind. Die Verk盲ufe erfolgten in mehreren Transaktionen zu gewichteten Durchschnittspreisen von ungef盲hr $80,00 bis $84,65 je Aktie. Der Bericht stellt fest, dass die Transaktionen von Broker-Dealern gem盲脽 Rule 144 ausgef眉hrt wurden und weist darauf hin, dass die berichtenden Personen Stimm- und Verf眉gungsbefugnis 眉ber die gemeldeten Aktien teilen.

Positive
  • None.
Negative
  • None.

Insights

TL;DR: Large block sales by major shareholders via Rule 144; ownership remains substantial at ~11.0 million shares.

The Reporting Persons executed brokered Rule 144 sales totaling 79,670 shares on one date with weighted-average prices reported in discrete ranges from about $80.00 to $84.65. The filing is joint and confirms indirect beneficial ownership of 11,006,951 shares after the transactions, indicating continued substantial economic exposure despite the sales. The disclosure follows Section 16 requirements and provides weighted-price ranges rather than per-lot detail, with offers to furnish further breakdowns on request.

TL;DR: Joint filing by affiliated reporting entities; sales are disclosed and comply with Rule 144 procedures.

The Form 4 documents compliance with disclosure obligations by related corporate reporting persons who share voting and dispositive power. The transactions are identified as broker-dealer sales under Rule 144, which is a standard mechanism for registered shareholders to liquidate restricted or control-block holdings. The report includes powers of attorney exhibits referenced by prior filings and signatures from authorized representatives, supporting procedural regularity.

Insider di Power Solutions International hanno venduto 79.670 azioni il 19/08/2025 ai sensi della Rule 144, riducendo la detenzione indiretta dei Reporting Persons a 11.006.951 azioni. Il Modulo 4 猫 stato presentato congiuntamente da Weichai America Corp., Weichai Power Co., Ltd. e Shandong Heavy Industry Group Co., Ltd., ciascuna indicata come direttore e detentrice del 10%. Le vendite sono avvenute in pi霉 operazioni a prezzi medi ponderati compresi approssimativamente tra $80,00 e $84,65 per azione. Il rapporto specifica che le transazioni sono state eseguite da broker-dealer in conformit脿 alla Rule 144 e indica che i Reporting Persons condividono il potere di voto e di disposizione sulle azioni riportate.

Insiders de Power Solutions International vendieron 79.670 acciones el 19/08/2025 bajo la Regla 144, reduciendo la tenencia indirecta de las Personas Informantes a 11.006.951 acciones. El Formulario 4 fue presentado conjuntamente por Weichai America Corp., Weichai Power Co., Ltd. y Shandong Heavy Industry Group Co., Ltd., cada una identificada como directora y propietaria del 10%. Las ventas se realizaron en varias transacciones a precios promedio ponderados aproximadamente entre $80.00 y $84.65 por acci贸n. El informe indica que las operaciones las ejecutaron brokers-dealers conforme a la Regla 144 y se帽ala que las Personas Informantes comparten el poder de voto y de disposici贸n sobre las acciones informadas.

Power Solutions International鞚� 雮措秬鞛愲摛鞚� 2025雲� 8鞗� 19鞚� Rule 144鞐� 霐半澕 79,670欤茧ゼ 毵り皝頃橃棳 氤搓碃鞛愲摛鞚� 臧勳爲 氤挫湢 欤检嫕 靾橁皜 11,006,951欤茧 臧愳唽頄堨姷雼堧嫟. Form 4電� Weichai America Corp., Weichai Power Co., Ltd. 氚� Shandong Heavy Industry Group Co., Ltd.臧� 瓿惦彊 鞝滌稖頄堨溂氅�, 臧侅偓電� 鞚挫偓鞚挫瀽 10% 氤挫湢鞛愲 鞁濍硠霅橃柎 鞛堨姷雼堧嫟. 毵り皝鞚� 欤茧嫻 鞎� $80.00鞐愳劀 $84.65 靷澊鞚� 臧�欷戫弶攴犼皜瓴╈溂搿� 鞐煬 瓯半灅鞐� 瓯胳硱 鞚措（鞏挫鞀惦媹雼�. 氤搓碃靹滌棎電� 頃措嫻 瓯半灅臧� Rule 144鞐� 霐半澕 敫岆旎�-霐滊煬毳� 韱淀暣 鞚措（鞏挫鞙茧┌ 氤搓碃鞛愲摛鞚� 氤搓碃霅� 欤检嫕鞐� 雽�頃� 鞚橁舶甓� 氚� 觳橂秳甓岇潉 瓿奠湢頃滊嫟瓿� 氇呾嫓霅橃柎 鞛堨姷雼堧嫟.

Des initi茅s de Power Solutions International ont vendu 79 670 actions le 19/08/2025 en vertu de la Rule 144, r茅duisant les avoirs indirects des personnes d茅clarante 脿 11 006 951 actions. Le formulaire 4 a 茅t茅 d茅pos茅 conjointement par Weichai America Corp., Weichai Power Co., Ltd. et Shandong Heavy Industry Group Co., Ltd., chacune identifi茅e comme administrateur et d茅tentrice de 10 %. Les ventes ont eu lieu lors de plusieurs transactions 脿 des prix moyens pond茅r茅s d'environ 80,00 $ 脿 84,65 $ par action. Le rapport pr茅cise que les op茅rations ont 茅t茅 ex茅cut茅es par des courtiers-n茅gociants conform茅ment 脿 la Rule 144 et indique que les personnes d茅clarantes partagent le pouvoir de vote et de disposition sur les actions d茅clar茅es.

Insider von Power Solutions International verkauften am 19.08.2025 gem盲脽 Rule 144 insgesamt 79.670 Aktien, wodurch die indirekten Best盲nde der berichtenden Personen auf 11.006.951 Aktien sanken. Das Formular 4 wurde gemeinsam eingereicht von Weichai America Corp., Weichai Power Co., Ltd. und Shandong Heavy Industry Group Co., Ltd., die jeweils als Direktor und 10%-Eigent眉mer ausgewiesen sind. Die Verk盲ufe erfolgten in mehreren Transaktionen zu gewichteten Durchschnittspreisen von ungef盲hr $80,00 bis $84,65 je Aktie. Der Bericht stellt fest, dass die Transaktionen von Broker-Dealern gem盲脽 Rule 144 ausgef眉hrt wurden und weist darauf hin, dass die berichtenden Personen Stimm- und Verf眉gungsbefugnis 眉ber die gemeldeten Aktien teilen.

SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Weichai America Corp.
(Last) (First) (Middle)
3100 GOLF ROAD
(Street)
ROLLING MEADOWS IL 60008
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
POWER SOLUTIONS INTERNATIONAL, INC. [ PSIX ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
08/19/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 08/19/2025 S(1) 45,821 D $80.2426(2) 11,040,800 I See Explanation of Responses(7)
Common Stock 08/19/2025 S(1) 17,263 D $81.5747(3) 11,023,537 I See Explanation of Responses(7)
Common Stock 08/19/2025 S(1) 12,209 D $82.5885(4) 11,011,328 I See Explanation of Responses(7)
Common Stock 08/19/2025 S(1) 2,992 D $83.4504(5) 11,008,336 I See Explanation of Responses(7)
Common Stock 08/19/2025 S(1) 1,385 D $84.3154(6) 11,006,951 I See Explanation of Responses(7)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
1. Name and Address of Reporting Person*
Weichai America Corp.
(Last) (First) (Middle)
3100 GOLF ROAD
(Street)
ROLLING MEADOWS IL 60008
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Weichai Power Co., Ltd.
(Last) (First) (Middle)
SECTION A 197, FU SHOU EAST STREET
HIGH-TECH INDUSTRIAL DEV. ZONE
(Street)
WEIFANG, SHANDONG PROVINCE F4 261061
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Shandong Heavy Industry Group Co., Ltd.
(Last) (First) (Middle)
#40-1 YANZI SHAN WEST ROAD
(Street)
JINAN, SHANDONG PROVINCE F4 250014
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
Explanation of Responses:
1. These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.00 to $80.9347, 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.
3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.14 to $81.99, 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.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.0001 to $82.9978, 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.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $83.00 to $83.92, 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.
6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.0158 to $84.65, 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.
7. 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.
Remarks:
Exhibit List: Exhibit 24.1 - Power of Attorney (Weichai Power Co., Ltd.), incorporated by reference to Exhibit 24.1 to the Form 4 filed by Reporting Persons with the Securities and Exchange Commission on August 14, 2025 Exhibit 24.2 - Power of Attorney (Shandong Heavy Industry Group Co., Ltd.), incorporated by reference to Exhibit 24.2 to the Form 4 filed by Reporting Persons with the Securities and Exchange Commission on August 14, 2025
/s/ Jinguang Liu (aka Jin Liu), Chief Financial Officer, Weichai America Corp. 08/21/2025
/s/ Chenglong Sun, Authorized Representative, Weichai Power Co., Ltd. 08/21/2025
/s/ Chenglong Sun, Authorized Representative, Shandong Heavy Industry Group Co., Ltd. 08/21/2025
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source:

FAQ

What did insiders of PSIX sell on 08/19/2025?

The Reporting Persons sold a total of 79,670 shares of PSIX on 08/19/2025 via broker-dealer transactions under Rule 144.

Who filed the Form 4 for PSIX and what is their relationship to the issuer?

The Form 4 was filed jointly by Weichai America Corp., Weichai Power Co., Ltd. and Shandong Heavy Industry Group Co., Ltd.; each is identified as a director and a 10% owner with shared voting and dispositive power.

How many PSIX shares do the Reporting Persons own after the transactions?

After the reported sales, the Reporting Persons indirectly beneficially own 11,006,951 shares.

At what prices were the shares sold?

Sales were executed in multiple transactions with weighted-average prices reported in ranges approximately from $80.00 to $84.65 per share.

Were the sales part of a 10b5-1 plan or routine Rule 144 transactions?

The Form 4 states the transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144; it does not state they were made under a 10b5-1 plan.
Stock PSIX logo
Power Solutions Intl Inc

NASDAQ:PSIX

PSIX Rankings

#2107 Ranked by Market Cap
N/A Ranked by Dividends

PSIX Latest News

Aug 27, 2025
Power Solutions International and HD Hyundai Infracore Partner to Expand Industrial Engine Offerings in North America
Aug 11, 2025
Power Solutions International, Inc. Secured $135 Million Long-Term聽Committed Credit Facility to Support Strategic Growth
Aug 7, 2025
Power Solutions International Announces Record Second Quarter 2025 Financial Results
Jun 9, 2025
Power Solutions International Set to Join Russell 3000庐, Russell 2000庐, and Russell Microcap庐 Indexes
May 8, 2025
Power Solutions International Announces Strong First Quarter 2025 Financial Results

PSIX Latest SEC Filings

Aug 28, 2025
[Form 4] Power Solutions International, Inc. Insider Trading Activity
Aug 28, 2025
[SCHEDULE 13D/A] Power Solutions International, Inc. SEC Filing
Aug 27, 2025
[Form 4] Power Solutions International, Inc. Insider Trading Activity
Aug 27, 2025
[Form 4] Power Solutions International, Inc. Insider Trading Activity
Aug 27, 2025
[Form 4] Power Solutions International, Inc. Insider Trading Activity

PSIX Stock Data

2.04B
7.69M
67.22%
14.99%
2.08%
Specialty Industrial Machinery
Engines & Turbines
United States
WOOD DALE