PSIX

SEC source: 0001193125-26-354102 · ownership.xml · derivative · entry 1

Hu Nan (Richard) · CIK 0002144767 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,867

Underlying: Common Stock · 5,867 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Phantom Unit represents an unfunded, unsecured right to receive a cash payment equal to the average Fair Market Value per share of the Issuer's Common Stock over the thirty (30) trading days immediately preceding the applicable vesting date. Phantom Units are settled in cash only and do not entitle the Reporting Person to any shares of Common Stock or voting rights. One-third of the Phantom Units vest on each of August 17, 2027, August 17, 2028 and August 17, 2029, subject to the Reporting Person's continuous service with the Issuer or its affiliates.

F1 · derivative.exercise_date: Each Phantom Unit represents an unfunded, unsecured right to receive a cash payment equal to the average Fair Market Value per share of the Issuer's Common Stock over the thirty (30) trading days immediately preceding the applicable vesting date. Phantom Units are settled in cash only and do not entitle the Reporting Person to any shares of Common Stock or voting rights. One-third of the Phantom Units vest on each of August 17, 2027, August 17, 2028 and August 17, 2029, subject to the Reporting Person's continuous service with the Issuer or its affiliates.

F1 · derivative.expiration_date: Each Phantom Unit represents an unfunded, unsecured right to receive a cash payment equal to the average Fair Market Value per share of the Issuer's Common Stock over the thirty (30) trading days immediately preceding the applicable vesting date. Phantom Units are settled in cash only and do not entitle the Reporting Person to any shares of Common Stock or voting rights. One-third of the Phantom Units vest on each of August 17, 2027, August 17, 2028 and August 17, 2029, subject to the Reporting Person's continuous service with the Issuer or its affiliates.

SEC source: 0001193125-26-160722 · ownership.xml · derivative · entry 1

Li Xun · CIK 0001944401 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,665

Underlying: Common Stock · 1,665 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Phantom Unit represents an unfunded, unsecured right to receive a cash payment equal to the average Fair Market Value per share of the Issuer's Common Stock over the thirty (30) trading days immediately preceding the applicable vesting date. Phantom Units are settled in cash only and do not entitle the Reporting Person to any shares of Common Stock or voting rights. One-third of the Phantom Units vest on each of March 6, 2027, March 6, 2028 and March 6, 2029, subject to the Reporting Person's continuous service with the Issuer or its affiliates.

F1 · derivative.exercise_date: Each Phantom Unit represents an unfunded, unsecured right to receive a cash payment equal to the average Fair Market Value per share of the Issuer's Common Stock over the thirty (30) trading days immediately preceding the applicable vesting date. Phantom Units are settled in cash only and do not entitle the Reporting Person to any shares of Common Stock or voting rights. One-third of the Phantom Units vest on each of March 6, 2027, March 6, 2028 and March 6, 2029, subject to the Reporting Person's continuous service with the Issuer or its affiliates.

F1 · derivative.expiration_date: Each Phantom Unit represents an unfunded, unsecured right to receive a cash payment equal to the average Fair Market Value per share of the Issuer's Common Stock over the thirty (30) trading days immediately preceding the applicable vesting date. Phantom Units are settled in cash only and do not entitle the Reporting Person to any shares of Common Stock or voting rights. One-third of the Phantom Units vest on each of March 6, 2027, March 6, 2028 and March 6, 2029, subject to the Reporting Person's continuous service with the Issuer or its affiliates.

SEC source: 0001193125-26-160705 · ownership.xml · derivative · entry 1

Du Zhaoying · CIK 0002087985 · GC and Corp Secy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,492

Underlying: Common Stock · 1,492 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Phantom Unit represents an unfunded, unsecured right to receive a cash payment equal to the average Fair Market Value per share of the Issuer's Common Stock over the thirty (30) trading days immediately preceding the applicable vesting date. Phantom Units are settled in cash only and do not entitle the Reporting Person to any shares of Common Stock or voting rights. One-third of the Phantom Units vest on each of March 6, 2027, March 6, 2028 and March 6, 2029, subject to the Reporting Person's continuous service with the Issuer or its affiliates.

F1 · derivative.exercise_date: Each Phantom Unit represents an unfunded, unsecured right to receive a cash payment equal to the average Fair Market Value per share of the Issuer's Common Stock over the thirty (30) trading days immediately preceding the applicable vesting date. Phantom Units are settled in cash only and do not entitle the Reporting Person to any shares of Common Stock or voting rights. One-third of the Phantom Units vest on each of March 6, 2027, March 6, 2028 and March 6, 2029, subject to the Reporting Person's continuous service with the Issuer or its affiliates.

F1 · derivative.expiration_date: Each Phantom Unit represents an unfunded, unsecured right to receive a cash payment equal to the average Fair Market Value per share of the Issuer's Common Stock over the thirty (30) trading days immediately preceding the applicable vesting date. Phantom Units are settled in cash only and do not entitle the Reporting Person to any shares of Common Stock or voting rights. One-third of the Phantom Units vest on each of March 6, 2027, March 6, 2028 and March 6, 2029, subject to the Reporting Person's continuous service with the Issuer or its affiliates.

SEC source: 0001193125-26-054563 · ownership.xml · derivative · entry 3

Li Xun · CIK 0001944401 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,500

Underlying: Common Stock · 7,500 shares

Expires 2032-09-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: The SAR vests and becomes exercisable on September 2, 2026.

SEC source: 0001193125-26-054563 · ownership.xml · nonDerivative · entry 2

Li Xun · CIK 0001944401 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,592

F1 · shares: The reporting person received 4,071 shares of common stock upon the net exercise of 7,500 stock appreciation rights ("SARs"). A total of 3,429 shares of common stock underlying such SARs were withheld in payment of the exercise price and to satisfy the withholding tax obligation resulting from the exercise.

SEC source: 0001193125-26-054563 · ownership.xml · nonDerivative · entry 1

Li Xun · CIK 0001944401 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,021

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001193125-25-318065 · ownership.xml · nonDerivative · entry 1

He Hong · CIK 0001791581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,750

F1 · shares: Represents Common Stock in the form of restricted stock granted under Issuer's 2012 Incentive Compensation Plan as amended and restated and subject to certain restrictions contained in a Restricted Stock Agreement, dated as of December 11, 2025, between Issuer and Hong He. Subject to certain conditions, 5,000 shares will vest on July 24, 2026.

SEC source: 0001193125-25-317911 · ownership.xml · nonDerivative · entry 1

SIMPKINS FRANK P · CIK 0001353839 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,000

F1 · shares: Represents Common Stock in the form of restricted stock granted under Issuer's 2012 Incentive Compensation Plan as amended and restated and subject to certain restrictions contained in a Restricted Stock Agreement, dated as of December 11, 2025, between Issuer and Frank P. Simpkins. Subject to certain conditions, 5,000 shares will vest on July 24, 2026.

SEC source: 0001193125-25-317886 · ownership.xml · derivative · entry 1

Du Zhaoying · CIK 0002087985 · GC and Corp Secy

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 700

Underlying: Common Stock · 700 shares

Expires 2035-12-11

F1 · derivative.exercise_date: One-third of such stock appreciation rights vest on December 11 of each of 2026, 2027 and 2028 as long as the Reporting Person continues employment with the issuer on each such date.

SEC source: 0001193125-25-317880 · ownership.xml · nonDerivative · entry 1

Shea Courtney C. · CIK 0001771938 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,000

F1 · shares: Represents Common Stock in the form of restricted stock granted under Issuer's 2012 Incentive Compensation Plan as amended and restated and subject to certain restrictions contained in a Restricted Stock Agreement, dated as of December 11, 2025, between Issuer and Courtney Shea. Subject to certain conditions, 5,000 shares will vest on July 24, 2026.

SEC source: 0001193125-25-202188 · ownership.xml · nonDerivative · entry 2

He Hong · CIK 0001791581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,750

SEC source: 0001213900-25-087698 · ownership.xml · nonDerivative · entry 4

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,599,759

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F5 · price: 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 $94.98, 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.

F6 · ownership.nature: 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.

SEC source: 0001213900-25-087698 · ownership.xml · nonDerivative · entry 3

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,630,278

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.00 to $93.99, 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.

F6 · ownership.nature: 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.

SEC source: 0001213900-25-087698 · ownership.xml · nonDerivative · entry 2

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,653,509

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F3 · price: 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 $92.97, 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.

F6 · ownership.nature: 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.

SEC source: 0001213900-25-087698 · ownership.xml · nonDerivative · entry 1

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,672,860

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.36 to $91.99, 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.

F6 · ownership.nature: 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.

SEC source: 0001193125-25-202188 · ownership.xml · nonDerivative · entry 1

He Hong · CIK 0001791581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,250

SEC source: 0001213900-25-087197 · ownership.xml · nonDerivative · entry 6

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,679,598

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $95.03 to $95.58, 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.

F8 · ownership.nature: 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.

SEC source: 0001213900-25-087197 · ownership.xml · nonDerivative · entry 5

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,680,169

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $94.02 to $94.88, 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.

F8 · ownership.nature: 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.

SEC source: 0001213900-25-087197 · ownership.xml · nonDerivative · entry 4

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,687,754

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.12 to $93.95, 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.

F8 · ownership.nature: 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.

SEC source: 0001213900-25-087197 · ownership.xml · nonDerivative · entry 3

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,690,269

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F4 · price: 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 (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.

F8 · ownership.nature: 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.

SEC source: 0001213900-25-087197 · ownership.xml · nonDerivative · entry 2

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,704,826

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.00 to $91.99, 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.

F8 · ownership.nature: 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.

SEC source: 0001213900-25-087197 · ownership.xml · nonDerivative · entry 1

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,709,844

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F2 · price: 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 (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.

F8 · ownership.nature: 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.

SEC source: 0000950170-25-114212 · ownership.xml · nonDerivative · entry 2

He Hong · CIK 0001791581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,250

F1 · price: The price reported in Column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $92.00 to $92.55. The reporting person undertakes 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 sold at each separate price within the range set forth in this footnote.

SEC source: 0000950170-25-114212 · ownership.xml · nonDerivative · entry 1

He Hong · CIK 0001791581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,750

SEC source: 0000950170-25-114213 · ownership.xml · nonDerivative · entry 1

Xykis Constantine · CIK 0001852699 · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · price: The price reported in Column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $91.10 to $91.84. The reporting person undertakes 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 sold at each separate price within the range set forth in this footnote.

SEC source: 0000950170-25-113972 · ownership.xml · nonDerivative · entry 1

He Hong · CIK 0001791581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,250

SEC source: 0001213900-25-081721 · ownership.xml · nonDerivative · entry 10

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,716,152

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F11 · ownership.nature: 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.

SEC source: 0001213900-25-081721 · ownership.xml · nonDerivative · entry 9

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,716,300

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F10 · price: 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 $88.99, 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.

F11 · ownership.nature: 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.

SEC source: 0001213900-25-081721 · ownership.xml · nonDerivative · entry 8

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,719,715

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.00 to $87.91, 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.

F11 · ownership.nature: 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.

SEC source: 0001213900-25-081721 · ownership.xml · nonDerivative · entry 7

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,722,391

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $86.475 to $86.965, 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.

F11 · ownership.nature: 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.

SEC source: 0001213900-25-081721 · ownership.xml · nonDerivative · entry 6

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,733,686

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $85.02 to $85.955, 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.

F11 · ownership.nature: 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.

SEC source: 0001213900-25-081721 · ownership.xml · nonDerivative · entry 5

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,735,779

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.00 to $84.96, 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.

F11 · ownership.nature: 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.

SEC source: 0001213900-25-081721 · ownership.xml · nonDerivative · entry 4

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,745,728

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F5 · price: 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 $83.995, 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.

F11 · ownership.nature: 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.

SEC source: 0001213900-25-081721 · ownership.xml · nonDerivative · entry 3

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,757,651

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.00 to $82.99, 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.

F11 · ownership.nature: 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.

SEC source: 0001213900-25-081721 · ownership.xml · nonDerivative · entry 2

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,774,726

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.02 to $81.985, 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.

F11 · ownership.nature: 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.

SEC source: 0001213900-25-081721 · ownership.xml · nonDerivative · entry 1

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,796,651

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.32 to $80.98, 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.

F11 · ownership.nature: 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.

SEC source: 0000950170-25-111647 · ownership.xml · nonDerivative · entry 5

Li Xun · CIK 0001944401 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 521

F3 · kind: The reported purchase was matchable under Section 16(b) of the Securities Exchange Act of 1934 with the reporting person's sale of 200 shares of common stock at a price of $93.30 per share on August 25, 2025 and of 100 shares of common stock at a price of $93.20 per share on August 25, 2025. The reporting person has paid to the Issuer $134.00, representing the full amount of the profit realized in connection with the short-swing transaction.

SEC source: 0000950170-25-111647 · ownership.xml · nonDerivative · entry 4

Li Xun · CIK 0001944401 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 221

SEC source: 0000950170-25-111647 · ownership.xml · nonDerivative · entry 3

Li Xun · CIK 0001944401 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 421

SEC source: 0000950170-25-111647 · ownership.xml · nonDerivative · entry 2

Li Xun · CIK 0001944401 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,021

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.50 to $93.10. The reporting person undertakes 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 sold at each separate price within the range set forth in this footnote.

SEC source: 0000950170-25-111647 · ownership.xml · nonDerivative · entry 1

Li Xun · CIK 0001944401 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,621

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.40 to $92.30. The reporting person undertakes 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 sold at each separate price within the range set forth in this footnote.

SEC source: 0001213900-25-081116 · ownership.xml · nonDerivative · entry 6

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,810,199

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.00 to $93.365, 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.

F8 · ownership.nature: 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.

SEC source: 0001213900-25-081116 · ownership.xml · nonDerivative · entry 5

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,813,894

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.0053 to $92.985, 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.

F8 · ownership.nature: 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.

SEC source: 0001213900-25-081116 · ownership.xml · nonDerivative · entry 4

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,825,289

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.01 to $91.9886, 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.

F8 · ownership.nature: 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.

SEC source: 0001213900-25-081116 · ownership.xml · nonDerivative · entry 3

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,837,572

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F4 · price: 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 $90.95, 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.

F8 · ownership.nature: 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.

SEC source: 0001213900-25-081116 · ownership.xml · nonDerivative · entry 2

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,846,575

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.00 to $89.995, 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.

F8 · ownership.nature: 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.

SEC source: 0001213900-25-081116 · ownership.xml · nonDerivative · entry 1

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,854,677

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $88.525 to $88.9982, 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.

F8 · ownership.nature: 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.

SEC source: 0000950170-25-111649 · ownership.xml · nonDerivative · entry 1

SIMPKINS FRANK P · CIK 0001353839 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,000

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.55 to $91.93. The reporting person undertakes 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 sold at each separate price within the range set forth in this footnote.

SEC source: 0001213900-25-080742 · ownership.xml · nonDerivative · entry 11

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,861,625

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F12 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.00 to $91.768, 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.

F13 · ownership.nature: 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.

SEC source: 0001213900-25-080742 · ownership.xml · nonDerivative · entry 10

Weichai America Corp. · CIK 0001702521 · 10% owner

Weichai Power Co., Ltd. · CIK 0001703367 · 10% owner

Shandong Heavy Industry Group Co., Ltd. · CIK 0001703252 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Explanation of Responses

Disclosed balance after: 10,874,948

F1 · kind: These transactions occurred pursuant to broker-dealer sales conducted in accordance with Rule 144 under the Securities Act of 1933, as amended.

F11 · price: 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 $90.9996, 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.

F13 · ownership.nature: 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.