ACMR

SEC source: 0001140361-25-008444 · form4.xml · nonDerivative · entry 1

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 764,608

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $26.22 to $26.78, inclusive. The reporting person undertakes to provide to 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 ranges set forth in footnote (2) to this Form 4.

SEC source: 0001140361-25-007211 · form4.xml · derivative · entry 4

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 25,001 shares

Expires 2025-04-30

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.

F1 · kind: On March 3 2025, the reporting person exercised, by net exercise, a previously issued stock option to purchase 25,001 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 482 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on February 28, 2025 of $25.94, and issuing to the reporting person the remaining 24,519 shares of Class A Common Stock.

F2 · derivative.exercise_date: The option is fully vested and exercisable.

SEC source: 0001140361-25-007211 · form4.xml · nonDerivative · entry 2

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 779,609

F1 · kind: On March 3 2025, the reporting person exercised, by net exercise, a previously issued stock option to purchase 25,001 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 482 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on February 28, 2025 of $25.94, and issuing to the reporting person the remaining 24,519 shares of Class A Common Stock.

SEC source: 0001140361-25-007211 · form4.xml · nonDerivative · entry 1

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 780,091

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.

F1 · kind: On March 3 2025, the reporting person exercised, by net exercise, a previously issued stock option to purchase 25,001 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 482 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on February 28, 2025 of $25.94, and issuing to the reporting person the remaining 24,519 shares of Class A Common Stock.

SEC source: 0001140361-25-007209 · form4.xml · derivative · entry 7

Wang David H · CIK 0001721580 · Director · See Remarks · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 210,000 shares

Expires 2025-04-30

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.

F1 · kind: On March 3, 2025, the reporting person exercised, by net exercise, a previously issued stock option to purchase 210,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 4,048 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on February 28, 2025 of $25.94, and issuing to the reporting person the remaining 205,952 shares of Class A Common Stock.

F2 · derivative.exercise_date: The option is fully vested and exercisable.

SEC source: 0001140361-25-007209 · form4.xml · nonDerivative · entry 2

Wang David H · CIK 0001721580 · Director · See Remarks · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 803,958

F1 · kind: On March 3, 2025, the reporting person exercised, by net exercise, a previously issued stock option to purchase 210,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 4,048 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on February 28, 2025 of $25.94, and issuing to the reporting person the remaining 205,952 shares of Class A Common Stock.

SEC source: 0001140361-25-007209 · form4.xml · nonDerivative · entry 1

Wang David H · CIK 0001721580 · Director · See Remarks · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 808,006

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.

F1 · kind: On March 3, 2025, the reporting person exercised, by net exercise, a previously issued stock option to purchase 210,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 4,048 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on February 28, 2025 of $25.94, and issuing to the reporting person the remaining 205,952 shares of Class A Common Stock.

SEC source: 0001140361-25-003749 · form4.xml · derivative · entry 5

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 77,402

Underlying: Class A Common Stock · 12,598 shares

Expires 2033-08-09

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 · kind: On February 6, 2025, the reporting person exercised a previously issued stock option to purchase 12,598 shares of Class A Common Stock of the Issuer.

F4 · derivative.exercise_date: The option will vest and become exercisable as to 25,000 shares on August 09, 2024 and the remaining 75,000 shares will vest and become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date.

SEC source: 0001140361-25-003749 · form4.xml · derivative · entry 4

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 90,000

Underlying: Class A Common Stock · 10,000 shares

Expires 2033-08-09

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.

F1 · kind: On February 6, 2025, the reporting person exercised a previously issued stock option to purchase 10,000 shares of Class A Common Stock of the Issuer.

F4 · derivative.exercise_date: The option will vest and become exercisable as to 25,000 shares on August 09, 2024 and the remaining 75,000 shares will vest and become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date.

SEC source: 0001140361-25-003749 · form4.xml · nonDerivative · entry 3

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 100,002

F3 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2024.

SEC source: 0001140361-25-003749 · form4.xml · nonDerivative · entry 2

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 122,600

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 · kind: On February 6, 2025, the reporting person exercised a previously issued stock option to purchase 12,598 shares of Class A Common Stock of the Issuer.

SEC source: 0001140361-25-003749 · form4.xml · nonDerivative · entry 1

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 110,002

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.

F1 · kind: On February 6, 2025, the reporting person exercised a previously issued stock option to purchase 10,000 shares of Class A Common Stock of the Issuer.

SEC source: 0001140361-25-003748 · form4.xml · derivative · entry 3

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 30,000

Underlying: Class A Common Stock · 15,000 shares

Expires 2029-04-22

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 option is fully vested and exercisable.

SEC source: 0001140361-25-003748 · form4.xml · nonDerivative · entry 2

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 900

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2024.

SEC source: 0001140361-25-003748 · form4.xml · nonDerivative · entry 1

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,900

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: 0001140361-24-048310 · form4.xml · nonDerivative · entry 1

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 755,090

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $17.15 to $17.65, inclusive. The reporting person undertakes to provide to 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 ranges set forth in footnote (2) to this Form 4.

SEC source: 0001140361-24-048306 · form4.xml · nonDerivative · entry 1

Wang David H · CIK 0001721580 · Director · See Remarks · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 598,006

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 14, 2024, as amended on August 13, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $17.12 to $17.65, inclusive. The reporting person undertakes to provide to 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 ranges set forth in footnote (2) to this Form 4.

SEC source: 0001140361-24-048076 · form4.xml · nonDerivative · entry 2

Wang David H · CIK 0001721580 · Director · See Remarks · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 654,256

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 14, 2024, as amended on August 13, 2024.

F3 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $18.23 to $18.39, inclusive.

SEC source: 0001140361-24-048076 · form4.xml · nonDerivative · entry 1

Wang David H · CIK 0001721580 · Director · See Remarks · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 663,740

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 14, 2024, as amended on August 13, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $17.23 to $18.22, inclusive. The reporting person undertakes to provide to 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 ranges set forth in footnote (2) and (3) to this Form 4.

SEC source: 0001140361-24-047888 · form4.xml · nonDerivative · entry 1

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 774,148

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $18.97 to $19.29, inclusive. The reporting person undertakes to provide to 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 ranges set forth in footnote (2) to this Form 4.

SEC source: 0001140361-24-047887 · form4.xml · nonDerivative · entry 1

Wang David H · CIK 0001721580 · Director · See Remarks · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 710,506

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 14, 2024, as amended on August 13, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $18.80 to $19.29, inclusive. The reporting person undertakes to provide to 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 ranges set forth in footnote (2) to this Form 4.

SEC source: 0001140361-24-047169 · form4.xml · derivative · entry 4

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,001

Underlying: Class A Common Stock · 35,000 shares

Expires 2025-04-30

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.

F1 · kind: On November 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 942 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 13, 2024 of $18.59, and issuing to the reporting person the remaining 34,058 shares of Class A Common Stock.

F2 · derivative.exercise_date: The option is fully vested and exercisable.

SEC source: 0001140361-24-047169 · form4.xml · nonDerivative · entry 2

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 789,148

F1 · kind: On November 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 942 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 13, 2024 of $18.59, and issuing to the reporting person the remaining 34,058 shares of Class A Common Stock.

SEC source: 0001140361-24-047169 · form4.xml · nonDerivative · entry 1

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 790,090

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.

F1 · kind: On November 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 942 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 13, 2024 of $18.59, and issuing to the reporting person the remaining 34,058 shares of Class A Common Stock.

SEC source: 0001140361-24-047168 · form4.xml · derivative · entry 7

Wang David H · CIK 0001721580 · Director · See Remarks · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 210,000

Underlying: Class A Common Stock · 270,000 shares

Expires 2025-04-30

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.

F1 · kind: On November 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 270,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 7,262 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 13, 2024 of $18.59, and issuing to the reporting person the remaining 262,738 shares of Class A Common Stock.

F2 · derivative.exercise_date: The option is fully vested and exercisable.

SEC source: 0001140361-24-047168 · form4.xml · nonDerivative · entry 2

Wang David H · CIK 0001721580 · Director · See Remarks · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 766,756

F1 · kind: On November 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 270,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 7,262 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 13, 2024 of $18.59, and issuing to the reporting person the remaining 262,738 shares of Class A Common Stock.

SEC source: 0001140361-24-047168 · form4.xml · nonDerivative · entry 1

Wang David H · CIK 0001721580 · Director · See Remarks · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 774,018

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.

F1 · kind: On November 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 270,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 7,262 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 13, 2024 of $18.59, and issuing to the reporting person the remaining 262,738 shares of Class A Common Stock.

SEC source: 0001193805-24-001228 · e663943_4-sstvc.xml · nonDerivative · entry 6

Shanghai Science & Technology Venture Capital (Group) Co., Ltd. · CIK 0001981092 · 10% owner · Possible member of 10% group

Shanghai Pudong Science & Technology Investment Group Co., Ltd. · CIK 0001980934 · 10% owner · Possible member of 10% group

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,338,510

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $20.53 to $21.51, inclusive.

SEC source: 0001140361-24-043180 · form4.xml · nonDerivative · entry 6

Xing Xiao · CIK 0001937836 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnote

Disclosed balance after: 2,338,510

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd. ("SSTVC") on June 12, 2024.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.53 to $21.51, inclusive.

F3 · ownership.nature: These shares are owned by SSTVC. The reporting person is an employee of an affiliate of SSTVC. The reporting person disclaims beneficial ownership of the shares owned by SSTVC except to the extent of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that such reporting person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

SEC source: 0001193805-24-001228 · e663943_4-sstvc.xml · nonDerivative · entry 5

Shanghai Science & Technology Venture Capital (Group) Co., Ltd. · CIK 0001981092 · 10% owner · Possible member of 10% group

Shanghai Pudong Science & Technology Investment Group Co., Ltd. · CIK 0001980934 · 10% owner · Possible member of 10% group

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,428,906

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $23.05 to $23.91, inclusive.

SEC source: 0001193805-24-001228 · e663943_4-sstvc.xml · nonDerivative · entry 4

Shanghai Science & Technology Venture Capital (Group) Co., Ltd. · CIK 0001981092 · 10% owner · Possible member of 10% group

Shanghai Pudong Science & Technology Investment Group Co., Ltd. · CIK 0001980934 · 10% owner · Possible member of 10% group

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,601,911

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $25.01 to $25.02, inclusive.

SEC source: 0001193805-24-001228 · e663943_4-sstvc.xml · nonDerivative · entry 3

Shanghai Science & Technology Venture Capital (Group) Co., Ltd. · CIK 0001981092 · 10% owner · Possible member of 10% group

Shanghai Pudong Science & Technology Investment Group Co., Ltd. · CIK 0001980934 · 10% owner · Possible member of 10% group

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,603,392

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $25.03 to $26.02, inclusive.

SEC source: 0001140361-24-043180 · form4.xml · nonDerivative · entry 5

Xing Xiao · CIK 0001937836 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnote

Disclosed balance after: 2,428,906

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd. ("SSTVC") on June 12, 2024.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.01 to $26.02, inclusive.

F3 · ownership.nature: These shares are owned by SSTVC. The reporting person is an employee of an affiliate of SSTVC. The reporting person disclaims beneficial ownership of the shares owned by SSTVC except to the extent of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that such reporting person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

SEC source: 0001140361-24-043180 · form4.xml · nonDerivative · entry 4

Xing Xiao · CIK 0001937836 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnote

Disclosed balance after: 2,429,883

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd. ("SSTVC") on June 12, 2024.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.01 to $26.005, inclusive.

F3 · ownership.nature: These shares are owned by SSTVC. The reporting person is an employee of an affiliate of SSTVC. The reporting person disclaims beneficial ownership of the shares owned by SSTVC except to the extent of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that such reporting person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

SEC source: 0001140361-24-043180 · form4.xml · nonDerivative · entry 3

Xing Xiao · CIK 0001937836 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnote

Disclosed balance after: 2,530,901

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd. ("SSTVC") on June 12, 2024.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.05 to $23.91, inclusive.

F3 · ownership.nature: These shares are owned by SSTVC. The reporting person is an employee of an affiliate of SSTVC. The reporting person disclaims beneficial ownership of the shares owned by SSTVC except to the extent of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that such reporting person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

SEC source: 0001193805-24-001228 · e663943_4-sstvc.xml · nonDerivative · entry 2

Shanghai Science & Technology Venture Capital (Group) Co., Ltd. · CIK 0001981092 · 10% owner · Possible member of 10% group

Shanghai Pudong Science & Technology Investment Group Co., Ltd. · CIK 0001980934 · 10% owner · Possible member of 10% group

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,703,906

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $20.71 to $21.10, inclusive.

SEC source: 0001193805-24-001228 · e663943_4-sstvc.xml · nonDerivative · entry 1

Shanghai Science & Technology Venture Capital (Group) Co., Ltd. · CIK 0001981092 · 10% owner · Possible member of 10% group

Shanghai Pudong Science & Technology Investment Group Co., Ltd. · CIK 0001980934 · 10% owner · Possible member of 10% group

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,833,171

F1 · price: The reporting persons undertake to provide to 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 ranges set forth in footnotes 2 through 7 of this Form 4.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $21.11 to $22.10, inclusive.

SEC source: 0001140361-24-043180 · form4.xml · nonDerivative · entry 2

Xing Xiao · CIK 0001937836 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnote

Disclosed balance after: 2,703,906

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd. ("SSTVC") on June 12, 2024.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.71 to $22.10, inclusive.

F3 · ownership.nature: These shares are owned by SSTVC. The reporting person is an employee of an affiliate of SSTVC. The reporting person disclaims beneficial ownership of the shares owned by SSTVC except to the extent of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that such reporting person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

SEC source: 0001140361-24-043180 · form4.xml · nonDerivative · entry 1

Xing Xiao · CIK 0001937836 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnote

Disclosed balance after: 2,823,033

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd. ("SSTVC") on June 12, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.71 to $21.705, inclusive. The reporting person undertakes to provide to 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 ranges set forth in footnotes (2), (4), (5), (6), (7) and (8) to this Form 4.

F3 · ownership.nature: These shares are owned by SSTVC. The reporting person is an employee of an affiliate of SSTVC. The reporting person disclaims beneficial ownership of the shares owned by SSTVC except to the extent of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that such reporting person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

SEC source: 0001140361-24-043156 · form4.xml · derivative · entry 3

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 45,000

Underlying: Class A Common Stock · 16,516 shares

Expires 2029-04-22

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 option is fully vested and exercisable.

SEC source: 0001140361-24-043156 · form4.xml · nonDerivative · entry 2

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 900

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2024.

SEC source: 0001140361-24-043156 · form4.xml · nonDerivative · entry 1

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,416

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: 0001193805-24-001214 · e663937_4-sstvc.xml · nonDerivative · entry 2

Shanghai Science & Technology Venture Capital (Group) Co., Ltd. · CIK 0001981092 · 10% owner · Possible member of 10% group

Shanghai Pudong Science & Technology Investment Group Co., Ltd. · CIK 0001980934 · 10% owner · Possible member of 10% group

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,403,906

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $20.00 to $20.17, inclusive.

SEC source: 0001140361-24-042756 · form4.xml · nonDerivative · entry 2

Xing Xiao · CIK 0001937836 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnote

Disclosed balance after: 3,403,906

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd. ("SSTVC") on June 12, 2024.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.17, inclusive.

F3 · ownership.nature: These shares are owned by SSTVC. The reporting person is an employee of an affiliate of SSTVC. The reporting person disclaims beneficial ownership of the shares owned by SSTVC except to the extent of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that such reporting person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

SEC source: 0001193805-24-001214 · e663937_4-sstvc.xml · nonDerivative · entry 1

Shanghai Science & Technology Venture Capital (Group) Co., Ltd. · CIK 0001981092 · 10% owner · Possible member of 10% group

Shanghai Pudong Science & Technology Investment Group Co., Ltd. · CIK 0001980934 · 10% owner · Possible member of 10% group

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,430,206

F1 · price: The reporting persons undertake to provide to 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 ranges set forth in footnotes 2 and 3 of this Form 4.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $20.00 to $20.28, inclusive.

SEC source: 0001140361-24-042756 · form4.xml · nonDerivative · entry 1

Xing Xiao · CIK 0001937836 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnote

Disclosed balance after: 3,430,206

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd. ("SSTVC") on June 12, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.28, inclusive. The reporting person undertakes to provide to 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 ranges set forth in footnotes (2) and (4) to this Form 4.

F3 · ownership.nature: These shares are owned by SSTVC. The reporting person is an employee of an affiliate of SSTVC. The reporting person disclaims beneficial ownership of the shares owned by SSTVC except to the extent of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that such reporting person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

SEC source: 0001140361-24-041747 · form4.xml · derivative · entry 1

Chen Fuping · CIK 0001729184 · See remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,000

Underlying: Class A Common Stock · 30,000 shares

Expires 2030-07-27

F1 · derivative.exercise_date: On July 28, 2020, the reporting person was granted an option to purchase 30,000 shares of Class A Common Stock of the Issuer. The option vests and becomes exercisable based on the Issuer's satisfaction of certain performance criteria. On September 21, 2024, the Issuer confirmed that certain of the performance criteria were met, resulting in vesting of the option as to 30,000 shares.

F1 · balance_after: On July 28, 2020, the reporting person was granted an option to purchase 30,000 shares of Class A Common Stock of the Issuer. The option vests and becomes exercisable based on the Issuer's satisfaction of certain performance criteria. On September 21, 2024, the Issuer confirmed that certain of the performance criteria were met, resulting in vesting of the option as to 30,000 shares.

SEC source: 0001140361-24-039942 · form4.xml · nonDerivative · entry 1

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 755,090

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $17.90 to $18.25, inclusive. The reporting person undertakes to provide to 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 ranges set forth in footnote (2) to this Form 4.

SEC source: 0001140361-24-038571 · form4.xml · nonDerivative · entry 1

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 774,187

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023.

F2 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $19.75 to $19.94, inclusive. The reporting person undertakes to provide to 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 ranges set forth in footnote (2) to this Form 4.

SEC source: 0001140361-24-037711 · form4.xml · derivative · entry 4

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,001

Underlying: Class A Common Stock · 35,000 shares

Expires 2025-04-30

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.

F1 · kind: On August 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 903 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on August 13, 2024 of $19.38, and issuing to the reporting person the remaining 34,097 shares of Class A Common Stock.

F2 · derivative.exercise_date: The option is fully vested and exercisable.