ACMR

SEC source: 0001140361-22-009176 · form4.xml · nonDerivative · entry 1

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 309,568

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 9, 2022, the reporting person exercised a previously issued stock option to purchase 12,269 shares of Class A Common Stock of the Issuer.

SEC source: 0001140361-22-009174 · form4.xml · nonDerivative · entry 1

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 300

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 9, 2022, the reporting person exercised a previously issued stock option to purchase 300 shares of Class A Common Stock of the Issuer.

SEC source: 0001140361-22-008021 · form4.xml · derivative · entry 3

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,167

Underlying: Class A Common Stock · 12,500 shares

Expires 2025-05-01

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: The option is fully vested and exercisable.

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

SEC source: 0001140361-22-008021 · form4.xml · nonDerivative · entry 2

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 297,299

F1 · kind: On March 2, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 12,500 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 231 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 March 1, 2022 of $81.46, and issuing to the reporting person the remaining 12,269 shares of Class A Common Stock.

SEC source: 0001140361-22-008021 · form4.xml · nonDerivative · entry 1

Dun Haiping · CIK 0001721581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 297,530

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 2, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 12,500 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 231 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 March 1, 2022 of $81.46, and issuing to the reporting person the remaining 12,269 shares of Class A Common Stock.

SEC source: 0001140361-21-038928 · form4.xml · derivative · entry 9

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,972

Underlying: Class A Common Stock · 5,000 shares

Expires 2028-07-31

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 18, 2021, the reporting person exercised a previously issued stock option to purchase 5,000 shares of Class A Common Stock of the Issuer.

F7 · derivative.exercise_date: The option vested and became exercisable as to 10,000 shares on August 1, 2019, and the remaining 30,000 shares vest and became or become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date.

SEC source: 0001140361-21-038928 · form4.xml · nonDerivative · entry 8

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F2 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001140361-21-038928 · form4.xml · nonDerivative · entry 7

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 166

F2 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001140361-21-038928 · form4.xml · nonDerivative · entry 6

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 466

F2 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001140361-21-038928 · form4.xml · nonDerivative · entry 5

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 666

F2 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $96.32 to $96.37, inclusive.

SEC source: 0001140361-21-038928 · form4.xml · nonDerivative · entry 4

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,040

F2 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.80 to $93.98, inclusive.

SEC source: 0001140361-21-038928 · form4.xml · nonDerivative · entry 3

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,647

F2 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.42 to $93.20, inclusive.

SEC source: 0001140361-21-038928 · form4.xml · nonDerivative · entry 2

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,579

F2 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.29 to $92.26, 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 (3), (4), (5) and (6) to this Form 4.

SEC source: 0001140361-21-038928 · form4.xml · nonDerivative · entry 1

McKechnie Mark · CIK 0001775007 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,000

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 18, 2021, the reporting person exercised a previously issued stock option to purchase 5,000 shares of Class A Common Stock of the Issuer.

SEC source: 0001140361-21-036877 · form4.xml · derivative · entry 2

Feng Lisa · CIK 0001779777 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 2,437 shares

Expires 2027-11-01

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 3, 2021, the reporting person exercised a previously issued stock option to purchase 2,437 shares of Class A Common Stock of the Issuer.

F2 · derivative.exercise_date: The option vested and became exercisable as to 4,167 shares on August 15, 2018 and the remaining 12,500 shares vested and became exercisable in equal monthly installments over the following 36 months.

SEC source: 0001140361-21-036877 · form4.xml · nonDerivative · entry 1

Feng Lisa · CIK 0001779777 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,667

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 3, 2021, the reporting person exercised a previously issued stock option to purchase 2,437 shares of Class A Common Stock of the Issuer.

SEC source: 0001140361-21-031489 · form4.xml · derivative · entry 1

Chen Fuping · CIK 0001729184 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Class A Common Stock · 10,000 shares

Expires 2030-07-27

F1 · balance_after: On July 28, 2020, the reporting person was granted an option to purchase 20,000 shares of Class A Common Stock of the Issuer. The option vests and becomes exercisable as to 10,000 shares upon the Issuer's receipt of its first demo tool order from a specified semiconductor company and as to the other 10,000 shares, upon the qualification of the Issuer's first demo tool for such semiconductor company. The performance criteria for the first 10,000 shares was met, resulting in vesting of the option as to 10,000 shares.

SEC source: 0001140361-21-029285 · form4.xml · nonDerivative · entry 4

Xiang Yinan · CIK 0001721583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,146,170

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd.

F3 · ownership.nature: These shares are owned by Shanghai Science and Technology Venture Capital Co., Ltd., which designated the reporting person to the board of directors of the Issuer. The reporting person disclaims beneficial ownership of the shares owned by Shanghai Science and Technology Venture Capital Co., Ltd. except to the extent of her 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: 0001140361-21-029285 · form4.xml · nonDerivative · entry 3

Xiang Yinan · CIK 0001721583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,157,799

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd.

F4 · price: The price reported in Column 4 represents a weighted average price. The shares were sold in multiple transactions at prices ranging from $87.80 to $88.37, inclusive.

F3 · ownership.nature: These shares are owned by Shanghai Science and Technology Venture Capital Co., Ltd., which designated the reporting person to the board of directors of the Issuer. The reporting person disclaims beneficial ownership of the shares owned by Shanghai Science and Technology Venture Capital Co., Ltd. except to the extent of her 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: 0001140361-21-029285 · form4.xml · nonDerivative · entry 2

Xiang Yinan · CIK 0001721583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,357,799

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd.

F3 · ownership.nature: These shares are owned by Shanghai Science and Technology Venture Capital Co., Ltd., which designated the reporting person to the board of directors of the Issuer. The reporting person disclaims beneficial ownership of the shares owned by Shanghai Science and Technology Venture Capital Co., Ltd. except to the extent of her 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: 0001140361-21-029285 · form4.xml · nonDerivative · entry 1

Xiang Yinan · CIK 0001721583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,390,799

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd.

F2 · price: The price reported in Column 4 represents a weighted average price. The shares were sold in multiple transactions at prices ranging from $85.00 to $85.28, 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 of this Form 4.

F3 · ownership.nature: These shares are owned by Shanghai Science and Technology Venture Capital Co., Ltd., which designated the reporting person to the board of directors of the Issuer. The reporting person disclaims beneficial ownership of the shares owned by Shanghai Science and Technology Venture Capital Co., Ltd. except to the extent of her 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: 0001140361-21-029025 · form4.xml · derivative · entry 5

McKechnie Mark · CIK 0001775007 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,972

Underlying: Class A Common Stock · 5,000 shares

Expires 2028-07-31

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 19, 2021, the reporting person exercised a previously issued stock option to purchase 5,000 shares of Class A Common Stock of the Issuer.

F6 · derivative.exercise_date: The option vested and became exercisable as to 10,000 shares on August 1, 2019, and the remaining 30,000 shares vest and became or become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date.

SEC source: 0001140361-21-029025 · form4.xml · nonDerivative · entry 4

McKechnie Mark · CIK 0001775007 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F2 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $83.88 to $83.89, inclusive.

SEC source: 0001140361-21-029025 · form4.xml · nonDerivative · entry 3

McKechnie Mark · CIK 0001775007 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 200

F2 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.73 to $83.00, inclusive.

SEC source: 0001140361-21-029025 · form4.xml · nonDerivative · entry 2

McKechnie Mark · CIK 0001775007 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 726

F2 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.65 to $82.63, 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 (3), (4) and (5) to this Form 4.

SEC source: 0001140361-21-029025 · form4.xml · nonDerivative · entry 1

McKechnie Mark · CIK 0001775007 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,000

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 19, 2021, the reporting person exercised a previously issued stock option to purchase 5,000 shares of Class A Common Stock of the Issuer.

SEC source: 0001140361-21-029058 · form4.xml · nonDerivative · entry 2

Xiang Yinan · CIK 0001721583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,425,935

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd.

F4 · price: The price reported in Column 4 represents a weighted average price. The shares were sold in multiple transactions at prices ranging from $86.00 to $86.65, inclusive.

F3 · ownership.nature: These shares are owned by Shanghai Science and Technology Venture Capital Co., Ltd., which designated the reporting person to the board of directors of the Issuer. The reporting person disclaims beneficial ownership of the shares owned by Shanghai Science and Technology Venture Capital Co., Ltd. except to the extent of her 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: 0001140361-21-029058 · form4.xml · nonDerivative · entry 1

Xiang Yinan · CIK 0001721583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,427,411

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd.

F2 · price: The price reported in Column 4 represents a weighted average price. The shares were sold in multiple transactions at prices ranging from $85.00 to $85.98, 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 of this Form 4.

F3 · ownership.nature: These shares are owned by Shanghai Science and Technology Venture Capital Co., Ltd., which designated the reporting person to the board of directors of the Issuer. The reporting person disclaims beneficial ownership of the shares owned by Shanghai Science and Technology Venture Capital Co., Ltd. except to the extent of her 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: 0001140361-21-028330 · form4.xml · nonDerivative · entry 6

Xiang Yinan · CIK 0001721583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,452,547

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd.

F8 · price: The price reported in Column 4 represents a weighted average price. The shares were sold in multiple transactions at prices ranging from $85.00 to $85.23, inclusive.

F3 · ownership.nature: These shares are owned by Shanghai Science and Technology Venture Capital Co., Ltd., which designated the reporting person to the board of directors of the Issuer. The reporting person disclaims beneficial ownership of the shares owned by Shanghai Science and Technology Venture Capital Co., Ltd. except to the extent of her 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: 0001140361-21-028330 · form4.xml · nonDerivative · entry 5

Xiang Yinan · CIK 0001721583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,456,170

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd.

F7 · price: The price reported in Column 4 represents a weighted average price. The shares were sold in multiple transactions at prices ranging from $85.00 to $86.00, inclusive.

F3 · ownership.nature: These shares are owned by Shanghai Science and Technology Venture Capital Co., Ltd., which designated the reporting person to the board of directors of the Issuer. The reporting person disclaims beneficial ownership of the shares owned by Shanghai Science and Technology Venture Capital Co., Ltd. except to the extent of her 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: 0001140361-21-028330 · form4.xml · nonDerivative · entry 4

Xiang Yinan · CIK 0001721583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,476,170

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd.

F6 · price: The price reported in Column 4 represents a weighted average price. The shares were sold in multiple transactions at prices ranging from $90.00 to $90.25, inclusive.

F3 · ownership.nature: These shares are owned by Shanghai Science and Technology Venture Capital Co., Ltd., which designated the reporting person to the board of directors of the Issuer. The reporting person disclaims beneficial ownership of the shares owned by Shanghai Science and Technology Venture Capital Co., Ltd. except to the extent of her 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: 0001140361-21-028330 · form4.xml · nonDerivative · entry 3

Xiang Yinan · CIK 0001721583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,478,670

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd.

F5 · price: The price reported in Column 4 represents a weighted average price. The shares were sold in multiple transactions at prices ranging from $88.665 to $89.50, inclusive.

F3 · ownership.nature: These shares are owned by Shanghai Science and Technology Venture Capital Co., Ltd., which designated the reporting person to the board of directors of the Issuer. The reporting person disclaims beneficial ownership of the shares owned by Shanghai Science and Technology Venture Capital Co., Ltd. except to the extent of her 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: 0001140361-21-028330 · form4.xml · nonDerivative · entry 2

Xiang Yinan · CIK 0001721583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,480,270

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd.

F4 · price: The price reported in Column 4 represents a weighted average price. The shares were sold in multiple transactions at prices ranging from $86.02 to $86.40, inclusive.

F3 · ownership.nature: These shares are owned by Shanghai Science and Technology Venture Capital Co., Ltd., which designated the reporting person to the board of directors of the Issuer. The reporting person disclaims beneficial ownership of the shares owned by Shanghai Science and Technology Venture Capital Co., Ltd. except to the extent of her 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: 0001140361-21-028330 · form4.xml · nonDerivative · entry 1

Xiang Yinan · CIK 0001721583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,480,628

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by Shanghai Science and Technology Venture Capital Co., Ltd.

F2 · price: The price reported in Column 4 represents a weighted average price. The shares were sold in multiple transactions at prices ranging from $85.00 to $86.00, 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 of this Form 4.

F3 · ownership.nature: These shares are owned by Shanghai Science and Technology Venture Capital Co., Ltd., which designated the reporting person to the board of directors of the Issuer. The reporting person disclaims beneficial ownership of the shares owned by Shanghai Science and Technology Venture Capital Co., Ltd. except to the extent of her 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: 0001140361-21-016252 · form4.xml · derivative · entry 2

Hu Chenming · CIK 0001316320 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 23,334 shares

Expires 2026-12-27

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 May 4, 2021, the reporting person exercised a previously issued stock option to purchase 23,334 shares of Class A Common Stock of the Issuer.

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

SEC source: 0001140361-21-016252 · form4.xml · nonDerivative · entry 1

Hu Chenming · CIK 0001316320 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,770

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 May 4, 2021, the reporting person exercised a previously issued stock option to purchase 23,334 shares of Class A Common Stock of the Issuer.

SEC source: 0001140361-21-012488 · form4.xml · nonDerivative · entry 3

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,334

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001140361-21-012488 · form4.xml · derivative · entry 4

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,000

Underlying: Class A Common Stock · 5,000 shares

Expires 2028-07-31

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 April 8, 2021, the reporting person exercised a previously issued stock option to purchase 5,000 shares of Class A Common Stock of the Issuer.

F3 · derivative.exercise_date: The option vested and became exercisable as to 10,000 shares on August 1, 2019, and the remaining 30,000 shares vest and become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date.

SEC source: 0001140361-21-012488 · form4.xml · nonDerivative · entry 2

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,445

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001140361-21-012488 · form4.xml · nonDerivative · entry 1

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 61,445

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 April 8, 2021, the reporting person exercised a previously issued stock option to purchase 5,000 shares of Class A Common Stock of the Issuer.

SEC source: 0001140361-21-011668 · form4.xml · derivative · entry 3

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 13,334 shares

Expires 2025-05-01

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: The option is fully vested and exercisable.

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

SEC source: 0001140361-21-011668 · form4.xml · nonDerivative · entry 2

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,445

F1 · kind: On April 5, 2021, the reporting person exercised, by net exercise, a previously issued stock option to purchase 13,334 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 223 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 April 1, 2021 of $90.08, and issuing to the reporting person the remaining 13,111 shares of Class A Common Stock.

SEC source: 0001140361-21-011668 · form4.xml · nonDerivative · entry 1

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,668

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 April 5, 2021, the reporting person exercised, by net exercise, a previously issued stock option to purchase 13,334 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 223 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 April 1, 2021 of $90.08, and issuing to the reporting person the remaining 13,111 shares of Class A Common Stock.

SEC source: 0001140361-21-011300 · form4.xml · derivative · entry 2

Hu Chenming · CIK 0001316320 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,334

Underlying: Class A Common Stock · 10,000 shares

Expires 2026-12-27

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 30, 2021, the reporting person exercised a previously issued stock option to purchase 10,000 shares of Class A Common Stock of the Issuer.

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

SEC source: 0001140361-21-011300 · form4.xml · nonDerivative · entry 1

Hu Chenming · CIK 0001316320 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 64,436

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 30, 2021, the reporting person exercised a previously issued stock option to purchase 10,000 shares of Class A Common Stock of the Issuer.

SEC source: 0001140361-21-009502 · form4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 168,006

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

SEC source: 0001140361-21-009502 · form4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 217,234

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

SEC source: 0001140361-21-008754 · form4.xml · derivative · entry 6

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Class A Common Stock · 10,000 shares

Expires 2028-07-31

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.

F3 · kind: On March 16, 2021, 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 vested and became exercisable as to 10,000 shares on August 1, 2019, and the remaining 30,000 shares vest and become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date.

SEC source: 0001140361-21-008754 · form4.xml · nonDerivative · entry 4

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,334

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001140361-21-008754 · form4.xml · nonDerivative · entry 3

Cheav Sotheara · CIK 0001721279 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 53,334

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.

F3 · kind: On March 16, 2021, the reporting person exercised a previously issued stock option to purchase 10,000 shares of Class A Common Stock of the Issuer.