TDUP

SEC source: 0001484778-21-000048 · wf-form4_162794631661780.xml · nonDerivative · entry 4

HALEY TIMOTHY M · CIK 0001201583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Redpoint Associates IV, LLC

Disclosed balance after: 0

F3 · kind: Pursuant to an underwriting agreement and in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021, RV IV sold 1,043,885 shares of Class A Common Stock and RA IV sold 26,766 shares of Class A Common Stock, each at a price per share of $23.1588 (after underwriting discounts and commissions). RV IV and RA IV were selling stockholders in the registered public offering.

F2 · ownership.nature: Redpoint Ventures IV, LLC ("RV IV LLC") is the sole general partner of Redpoint Ventures IV, L.P. ("RV IV"). RV IV LLC and Redpoint Associates IV, LLC ("RA IV") are under common control. The Reporting Person is a manager of RV IV LLC and RA IV, and disclaims beneficial ownership of the securities held by RV IV and RA IV, except to the extent of his pecuniary interest therein.

SEC source: 0001484778-21-000048 · wf-form4_162794631661780.xml · nonDerivative · entry 3

HALEY TIMOTHY M · CIK 0001201583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Redpoint Ventures IV, L.P.

Disclosed balance after: 0

F3 · kind: Pursuant to an underwriting agreement and in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021, RV IV sold 1,043,885 shares of Class A Common Stock and RA IV sold 26,766 shares of Class A Common Stock, each at a price per share of $23.1588 (after underwriting discounts and commissions). RV IV and RA IV were selling stockholders in the registered public offering.

F2 · ownership.nature: Redpoint Ventures IV, LLC ("RV IV LLC") is the sole general partner of Redpoint Ventures IV, L.P. ("RV IV"). RV IV LLC and Redpoint Associates IV, LLC ("RA IV") are under common control. The Reporting Person is a manager of RV IV LLC and RA IV, and disclaims beneficial ownership of the securities held by RV IV and RA IV, except to the extent of his pecuniary interest therein.

SEC source: 0001484778-21-000048 · wf-form4_162794631661780.xml · nonDerivative · entry 2

HALEY TIMOTHY M · CIK 0001201583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Redpoint Associates IV, LLC

Disclosed balance after: 26,766

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: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F2 · ownership.nature: Redpoint Ventures IV, LLC ("RV IV LLC") is the sole general partner of Redpoint Ventures IV, L.P. ("RV IV"). RV IV LLC and Redpoint Associates IV, LLC ("RA IV") are under common control. The Reporting Person is a manager of RV IV LLC and RA IV, and disclaims beneficial ownership of the securities held by RV IV and RA IV, except to the extent of his pecuniary interest therein.

SEC source: 0001484778-21-000048 · wf-form4_162794631661780.xml · nonDerivative · entry 1

HALEY TIMOTHY M · CIK 0001201583 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Redpoint Ventures IV, L.P.

Disclosed balance after: 1,043,885

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: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F2 · ownership.nature: Redpoint Ventures IV, LLC ("RV IV LLC") is the sole general partner of Redpoint Ventures IV, L.P. ("RV IV"). RV IV LLC and Redpoint Associates IV, LLC ("RA IV") are under common control. The Reporting Person is a manager of RV IV LLC and RA IV, and disclaims beneficial ownership of the securities held by RV IV and RA IV, except to the extent of his pecuniary interest therein.

SEC source: 0001484778-21-000046 · wf-form4_162794574803964.xml · derivative · entry 9

Nakache Patricia · CIK 0001597755 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity X Side-By-Side Fund, L.P.

Disclosed balance after: 52,545

Underlying: Class A Common Stock · 5,838 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F1 · kind: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F4 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F4 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F2 · ownership.nature: The Reporting Person is a Management Member of Trinity TVL X, LLC, the general partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs' Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the "Trinity Entities"), and shares voting and dispositive power with the other Management Members over the shares held by each of the Trinity Entities. The Reporting Person disclaims beneficial ownership of the shares reported herein except to the extent of her pecuniary interest therein.

SEC source: 0001484778-21-000046 · wf-form4_162794574803964.xml · derivative · entry 8

Nakache Patricia · CIK 0001597755 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity X Entrepreneurs' Fund, L.P.

Disclosed balance after: 94,131

Underlying: Class A Common Stock · 10,459 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F1 · kind: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F4 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F4 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F2 · ownership.nature: The Reporting Person is a Management Member of Trinity TVL X, LLC, the general partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs' Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the "Trinity Entities"), and shares voting and dispositive power with the other Management Members over the shares held by each of the Trinity Entities. The Reporting Person disclaims beneficial ownership of the shares reported herein except to the extent of her pecuniary interest therein.

SEC source: 0001484778-21-000046 · wf-form4_162794574803964.xml · derivative · entry 7

Nakache Patricia · CIK 0001597755 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity Ventures X, L.P.

Disclosed balance after: 9,507,815

Underlying: Class A Common Stock · 1,056,423 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F1 · kind: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F4 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F4 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F2 · ownership.nature: The Reporting Person is a Management Member of Trinity TVL X, LLC, the general partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs' Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the "Trinity Entities"), and shares voting and dispositive power with the other Management Members over the shares held by each of the Trinity Entities. The Reporting Person disclaims beneficial ownership of the shares reported herein except to the extent of her pecuniary interest therein.

SEC source: 0001484778-21-000046 · wf-form4_162794574803964.xml · nonDerivative · entry 6

Nakache Patricia · CIK 0001597755 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity X Side-By-Side Fund, L.P.

Disclosed balance after: 0

F3 · kind: Pursuant to an underwriting agreement and in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021, Trinity Ventures X, L.P. sold 1,056,423 shares of Class A Common Stock, Trinity X Entrepreneurs' Fund, L.P. sold 10,459 shares of Class A Common Stock and Trinity X Side-By-Side Fund, L.P. sold 5,838 shares of Class A Common Stock, each at a price per share of $23.1588 (after underwriting discounts and commissions). The Trinity Entities were selling stockholders in the registered public offering.

F2 · ownership.nature: The Reporting Person is a Management Member of Trinity TVL X, LLC, the general partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs' Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the "Trinity Entities"), and shares voting and dispositive power with the other Management Members over the shares held by each of the Trinity Entities. The Reporting Person disclaims beneficial ownership of the shares reported herein except to the extent of her pecuniary interest therein.

SEC source: 0001484778-21-000046 · wf-form4_162794574803964.xml · nonDerivative · entry 5

Nakache Patricia · CIK 0001597755 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity X Entrepreneurs' Fund, L.P.

Disclosed balance after: 0

F3 · kind: Pursuant to an underwriting agreement and in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021, Trinity Ventures X, L.P. sold 1,056,423 shares of Class A Common Stock, Trinity X Entrepreneurs' Fund, L.P. sold 10,459 shares of Class A Common Stock and Trinity X Side-By-Side Fund, L.P. sold 5,838 shares of Class A Common Stock, each at a price per share of $23.1588 (after underwriting discounts and commissions). The Trinity Entities were selling stockholders in the registered public offering.

F2 · ownership.nature: The Reporting Person is a Management Member of Trinity TVL X, LLC, the general partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs' Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the "Trinity Entities"), and shares voting and dispositive power with the other Management Members over the shares held by each of the Trinity Entities. The Reporting Person disclaims beneficial ownership of the shares reported herein except to the extent of her pecuniary interest therein.

SEC source: 0001484778-21-000046 · wf-form4_162794574803964.xml · nonDerivative · entry 4

Nakache Patricia · CIK 0001597755 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity Ventures X, L.P.

Disclosed balance after: 0

F3 · kind: Pursuant to an underwriting agreement and in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021, Trinity Ventures X, L.P. sold 1,056,423 shares of Class A Common Stock, Trinity X Entrepreneurs' Fund, L.P. sold 10,459 shares of Class A Common Stock and Trinity X Side-By-Side Fund, L.P. sold 5,838 shares of Class A Common Stock, each at a price per share of $23.1588 (after underwriting discounts and commissions). The Trinity Entities were selling stockholders in the registered public offering.

F2 · ownership.nature: The Reporting Person is a Management Member of Trinity TVL X, LLC, the general partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs' Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the "Trinity Entities"), and shares voting and dispositive power with the other Management Members over the shares held by each of the Trinity Entities. The Reporting Person disclaims beneficial ownership of the shares reported herein except to the extent of her pecuniary interest therein.

SEC source: 0001484778-21-000046 · wf-form4_162794574803964.xml · nonDerivative · entry 3

Nakache Patricia · CIK 0001597755 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity X Side-By-Side Fund, L.P.

Disclosed balance after: 5,838

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: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F2 · ownership.nature: The Reporting Person is a Management Member of Trinity TVL X, LLC, the general partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs' Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the "Trinity Entities"), and shares voting and dispositive power with the other Management Members over the shares held by each of the Trinity Entities. The Reporting Person disclaims beneficial ownership of the shares reported herein except to the extent of her pecuniary interest therein.

SEC source: 0001484778-21-000046 · wf-form4_162794574803964.xml · nonDerivative · entry 2

Nakache Patricia · CIK 0001597755 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity X Entrepreneurs' Fund, L.P.

Disclosed balance after: 10,459

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: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F2 · ownership.nature: The Reporting Person is a Management Member of Trinity TVL X, LLC, the general partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs' Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the "Trinity Entities"), and shares voting and dispositive power with the other Management Members over the shares held by each of the Trinity Entities. The Reporting Person disclaims beneficial ownership of the shares reported herein except to the extent of her pecuniary interest therein.

SEC source: 0001484778-21-000046 · wf-form4_162794574803964.xml · nonDerivative · entry 1

Nakache Patricia · CIK 0001597755 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity Ventures X, L.P.

Disclosed balance after: 1,056,423

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: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F2 · ownership.nature: The Reporting Person is a Management Member of Trinity TVL X, LLC, the general partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs' Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the "Trinity Entities"), and shares voting and dispositive power with the other Management Members over the shares held by each of the Trinity Entities. The Reporting Person disclaims beneficial ownership of the shares reported herein except to the extent of her pecuniary interest therein.

SEC source: 0001484778-21-000047 · wf-form4_162794612029156.xml · derivative · entry 6

Redpoint Ventures IV, L.P. · CIK 0001483790 · 10% owner

Redpoint Associates IV, LLC · CIK 0001512527 · 10% owner

Redpoint Ventures IV, LLC · CIK 0001483789 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Redpoint Associates IV, LLC

Disclosed balance after: 240,896

Underlying: Class A Common Stock · 26,766 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F1 · kind: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F4 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F4 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F2 · ownership.nature: Redpoint Ventures IV, LLC ("RV IV LLC") is the sole general partner of Redpoint Ventures IV, L.P. ("RV IV"). RV IV LLC and Redpoint Associates IV, LLC ("RA IV") are under common control. As such, RV IV LLC has sole voting and investment control over the shares owned by RV IV, and may be deemed to beneficially own the shares held by RV IV. Each of the Reporting Persons disclaims beneficial ownership of the shares reported herein, except to the extent of its respective pecuniary interest therein.

SEC source: 0001484778-21-000047 · wf-form4_162794612029156.xml · derivative · entry 5

Redpoint Ventures IV, L.P. · CIK 0001483790 · 10% owner

Redpoint Associates IV, LLC · CIK 0001512527 · 10% owner

Redpoint Ventures IV, LLC · CIK 0001483789 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,394,981

Underlying: Class A Common Stock · 1,043,885 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F1 · kind: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F4 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F4 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

SEC source: 0001484778-21-000047 · wf-form4_162794612029156.xml · nonDerivative · entry 4

Redpoint Ventures IV, L.P. · CIK 0001483790 · 10% owner

Redpoint Associates IV, LLC · CIK 0001512527 · 10% owner

Redpoint Ventures IV, LLC · CIK 0001483789 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Redpoint Associates IV, LLC

Disclosed balance after: 0

F3 · kind: Pursuant to an underwriting agreement and in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021, RV IV sold 1,043,885 shares of Class A Common Stock and RA IV sold 26,766 shares of Class A Common Stock, each at a price per share of $23.1588 (after underwriting discounts and commissions). RV IV and RA IV were selling stockholders in the registered public offering.

F2 · ownership.nature: Redpoint Ventures IV, LLC ("RV IV LLC") is the sole general partner of Redpoint Ventures IV, L.P. ("RV IV"). RV IV LLC and Redpoint Associates IV, LLC ("RA IV") are under common control. As such, RV IV LLC has sole voting and investment control over the shares owned by RV IV, and may be deemed to beneficially own the shares held by RV IV. Each of the Reporting Persons disclaims beneficial ownership of the shares reported herein, except to the extent of its respective pecuniary interest therein.

SEC source: 0001484778-21-000047 · wf-form4_162794612029156.xml · nonDerivative · entry 3

Redpoint Ventures IV, L.P. · CIK 0001483790 · 10% owner

Redpoint Associates IV, LLC · CIK 0001512527 · 10% owner

Redpoint Ventures IV, LLC · CIK 0001483789 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F3 · kind: Pursuant to an underwriting agreement and in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021, RV IV sold 1,043,885 shares of Class A Common Stock and RA IV sold 26,766 shares of Class A Common Stock, each at a price per share of $23.1588 (after underwriting discounts and commissions). RV IV and RA IV were selling stockholders in the registered public offering.

SEC source: 0001484778-21-000047 · wf-form4_162794612029156.xml · nonDerivative · entry 2

Redpoint Ventures IV, L.P. · CIK 0001483790 · 10% owner

Redpoint Associates IV, LLC · CIK 0001512527 · 10% owner

Redpoint Ventures IV, LLC · CIK 0001483789 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Redpoint Associates IV, LLC

Disclosed balance after: 26,766

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: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F2 · ownership.nature: Redpoint Ventures IV, LLC ("RV IV LLC") is the sole general partner of Redpoint Ventures IV, L.P. ("RV IV"). RV IV LLC and Redpoint Associates IV, LLC ("RA IV") are under common control. As such, RV IV LLC has sole voting and investment control over the shares owned by RV IV, and may be deemed to beneficially own the shares held by RV IV. Each of the Reporting Persons disclaims beneficial ownership of the shares reported herein, except to the extent of its respective pecuniary interest therein.

SEC source: 0001484778-21-000047 · wf-form4_162794612029156.xml · nonDerivative · entry 1

Redpoint Ventures IV, L.P. · CIK 0001483790 · 10% owner

Redpoint Associates IV, LLC · CIK 0001512527 · 10% owner

Redpoint Ventures IV, LLC · CIK 0001483789 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,043,885

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: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

SEC source: 0001484778-21-000045 · wf-form4_162794543042169.xml · derivative · entry 9

Trinity TVL X, LLC · CIK 0001461710 · 10% owner

TRINITY VENTURES X LP · CIK 0001456065 · 10% owner

Trinity X Entrepreneurs' Fund, L.P. · CIK 0001461716 · 10% owner

Trinity X Side-By-Side Fund, L.P. · CIK 0001459208 · 10% owner

CHOPRA AJAY · CIK 0001228023 · 10% owner

Fenton Noel J · CIK 0001290449 · 10% owner

Labatt Nina C. · CIK 0001605660 · 10% owner

Nakache Patricia · CIK 0001597755 · Director · 10% owner

ORR LAWRENCE K · CIK 0001231094 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity X Side-By-Side Fund, L.P.

Disclosed balance after: 52,545

Underlying: Class A Common Stock · 5,838 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F1 · kind: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F4 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F4 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F2 · ownership.nature: Trinity TVL X, LLC is the General Partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the Trinity Entities), and the Management Members of Trinity TVL X, LLC share voting and dispositive power over the shares held by each of the Trinity Entities. The Management Members of Trinity TVL X, LLC are Ajay Chopra, Noel Fenton, Nina Labatt, Patricia Nakache and Larry Orr. Each of Trinity TVL X, LLC, Mr. Chopra, Mr. Fenton, Ms. Labatt and Mr. Orr disclaims beneficial ownership of the shares reported herein except to the extent of his, her or its respective pecuniary interest therein. Ms. Nakache is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001484778-21-000045 · wf-form4_162794543042169.xml · derivative · entry 8

Trinity TVL X, LLC · CIK 0001461710 · 10% owner

TRINITY VENTURES X LP · CIK 0001456065 · 10% owner

Trinity X Entrepreneurs' Fund, L.P. · CIK 0001461716 · 10% owner

Trinity X Side-By-Side Fund, L.P. · CIK 0001459208 · 10% owner

CHOPRA AJAY · CIK 0001228023 · 10% owner

Fenton Noel J · CIK 0001290449 · 10% owner

Labatt Nina C. · CIK 0001605660 · 10% owner

Nakache Patricia · CIK 0001597755 · Director · 10% owner

ORR LAWRENCE K · CIK 0001231094 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity X Entrepreneurs' Fund, L.P.

Disclosed balance after: 94,131

Underlying: Class A Common Stock · 10,459 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F1 · kind: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F4 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F4 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F2 · ownership.nature: Trinity TVL X, LLC is the General Partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the Trinity Entities), and the Management Members of Trinity TVL X, LLC share voting and dispositive power over the shares held by each of the Trinity Entities. The Management Members of Trinity TVL X, LLC are Ajay Chopra, Noel Fenton, Nina Labatt, Patricia Nakache and Larry Orr. Each of Trinity TVL X, LLC, Mr. Chopra, Mr. Fenton, Ms. Labatt and Mr. Orr disclaims beneficial ownership of the shares reported herein except to the extent of his, her or its respective pecuniary interest therein. Ms. Nakache is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001484778-21-000045 · wf-form4_162794543042169.xml · derivative · entry 7

Trinity TVL X, LLC · CIK 0001461710 · 10% owner

TRINITY VENTURES X LP · CIK 0001456065 · 10% owner

Trinity X Entrepreneurs' Fund, L.P. · CIK 0001461716 · 10% owner

Trinity X Side-By-Side Fund, L.P. · CIK 0001459208 · 10% owner

CHOPRA AJAY · CIK 0001228023 · 10% owner

Fenton Noel J · CIK 0001290449 · 10% owner

Labatt Nina C. · CIK 0001605660 · 10% owner

Nakache Patricia · CIK 0001597755 · Director · 10% owner

ORR LAWRENCE K · CIK 0001231094 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity Ventures X, L.P.

Disclosed balance after: 9,507,815

Underlying: Class A Common Stock · 1,056,423 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F1 · kind: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F4 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F4 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F2 · ownership.nature: Trinity TVL X, LLC is the General Partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the Trinity Entities), and the Management Members of Trinity TVL X, LLC share voting and dispositive power over the shares held by each of the Trinity Entities. The Management Members of Trinity TVL X, LLC are Ajay Chopra, Noel Fenton, Nina Labatt, Patricia Nakache and Larry Orr. Each of Trinity TVL X, LLC, Mr. Chopra, Mr. Fenton, Ms. Labatt and Mr. Orr disclaims beneficial ownership of the shares reported herein except to the extent of his, her or its respective pecuniary interest therein. Ms. Nakache is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001484778-21-000045 · wf-form4_162794543042169.xml · nonDerivative · entry 6

Trinity TVL X, LLC · CIK 0001461710 · 10% owner

TRINITY VENTURES X LP · CIK 0001456065 · 10% owner

Trinity X Entrepreneurs' Fund, L.P. · CIK 0001461716 · 10% owner

Trinity X Side-By-Side Fund, L.P. · CIK 0001459208 · 10% owner

CHOPRA AJAY · CIK 0001228023 · 10% owner

Fenton Noel J · CIK 0001290449 · 10% owner

Labatt Nina C. · CIK 0001605660 · 10% owner

Nakache Patricia · CIK 0001597755 · Director · 10% owner

ORR LAWRENCE K · CIK 0001231094 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity X Side-By-Side Fund, L.P.

Disclosed balance after: 0

F3 · kind: Pursuant to an underwriting agreement and in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021, Trinity Ventures X, L.P. sold 1,056,423 shares of Class A Common Stock, Trinity X Entrepreneurs' Fund, L.P. sold 10,459 shares of Class A Common Stock and Trinity X Side-By-Side Fund, L.P. sold 5,838 shares of Class A Common Stock, each at a price per share of $23.1588 (after underwriting discounts and commissions). The Trinity Entities were selling stockholders in the registered public offering.

F2 · ownership.nature: Trinity TVL X, LLC is the General Partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the Trinity Entities), and the Management Members of Trinity TVL X, LLC share voting and dispositive power over the shares held by each of the Trinity Entities. The Management Members of Trinity TVL X, LLC are Ajay Chopra, Noel Fenton, Nina Labatt, Patricia Nakache and Larry Orr. Each of Trinity TVL X, LLC, Mr. Chopra, Mr. Fenton, Ms. Labatt and Mr. Orr disclaims beneficial ownership of the shares reported herein except to the extent of his, her or its respective pecuniary interest therein. Ms. Nakache is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001484778-21-000045 · wf-form4_162794543042169.xml · nonDerivative · entry 5

Trinity TVL X, LLC · CIK 0001461710 · 10% owner

TRINITY VENTURES X LP · CIK 0001456065 · 10% owner

Trinity X Entrepreneurs' Fund, L.P. · CIK 0001461716 · 10% owner

Trinity X Side-By-Side Fund, L.P. · CIK 0001459208 · 10% owner

CHOPRA AJAY · CIK 0001228023 · 10% owner

Fenton Noel J · CIK 0001290449 · 10% owner

Labatt Nina C. · CIK 0001605660 · 10% owner

Nakache Patricia · CIK 0001597755 · Director · 10% owner

ORR LAWRENCE K · CIK 0001231094 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity X Entrepreneurs' Fund, L.P.

Disclosed balance after: 0

F3 · kind: Pursuant to an underwriting agreement and in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021, Trinity Ventures X, L.P. sold 1,056,423 shares of Class A Common Stock, Trinity X Entrepreneurs' Fund, L.P. sold 10,459 shares of Class A Common Stock and Trinity X Side-By-Side Fund, L.P. sold 5,838 shares of Class A Common Stock, each at a price per share of $23.1588 (after underwriting discounts and commissions). The Trinity Entities were selling stockholders in the registered public offering.

F2 · ownership.nature: Trinity TVL X, LLC is the General Partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the Trinity Entities), and the Management Members of Trinity TVL X, LLC share voting and dispositive power over the shares held by each of the Trinity Entities. The Management Members of Trinity TVL X, LLC are Ajay Chopra, Noel Fenton, Nina Labatt, Patricia Nakache and Larry Orr. Each of Trinity TVL X, LLC, Mr. Chopra, Mr. Fenton, Ms. Labatt and Mr. Orr disclaims beneficial ownership of the shares reported herein except to the extent of his, her or its respective pecuniary interest therein. Ms. Nakache is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001484778-21-000045 · wf-form4_162794543042169.xml · nonDerivative · entry 4

Trinity TVL X, LLC · CIK 0001461710 · 10% owner

TRINITY VENTURES X LP · CIK 0001456065 · 10% owner

Trinity X Entrepreneurs' Fund, L.P. · CIK 0001461716 · 10% owner

Trinity X Side-By-Side Fund, L.P. · CIK 0001459208 · 10% owner

CHOPRA AJAY · CIK 0001228023 · 10% owner

Fenton Noel J · CIK 0001290449 · 10% owner

Labatt Nina C. · CIK 0001605660 · 10% owner

Nakache Patricia · CIK 0001597755 · Director · 10% owner

ORR LAWRENCE K · CIK 0001231094 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity Ventures X, L.P.

Disclosed balance after: 0

F3 · kind: Pursuant to an underwriting agreement and in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021, Trinity Ventures X, L.P. sold 1,056,423 shares of Class A Common Stock, Trinity X Entrepreneurs' Fund, L.P. sold 10,459 shares of Class A Common Stock and Trinity X Side-By-Side Fund, L.P. sold 5,838 shares of Class A Common Stock, each at a price per share of $23.1588 (after underwriting discounts and commissions). The Trinity Entities were selling stockholders in the registered public offering.

F2 · ownership.nature: Trinity TVL X, LLC is the General Partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the Trinity Entities), and the Management Members of Trinity TVL X, LLC share voting and dispositive power over the shares held by each of the Trinity Entities. The Management Members of Trinity TVL X, LLC are Ajay Chopra, Noel Fenton, Nina Labatt, Patricia Nakache and Larry Orr. Each of Trinity TVL X, LLC, Mr. Chopra, Mr. Fenton, Ms. Labatt and Mr. Orr disclaims beneficial ownership of the shares reported herein except to the extent of his, her or its respective pecuniary interest therein. Ms. Nakache is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001484778-21-000045 · wf-form4_162794543042169.xml · nonDerivative · entry 3

Trinity TVL X, LLC · CIK 0001461710 · 10% owner

TRINITY VENTURES X LP · CIK 0001456065 · 10% owner

Trinity X Entrepreneurs' Fund, L.P. · CIK 0001461716 · 10% owner

Trinity X Side-By-Side Fund, L.P. · CIK 0001459208 · 10% owner

CHOPRA AJAY · CIK 0001228023 · 10% owner

Fenton Noel J · CIK 0001290449 · 10% owner

Labatt Nina C. · CIK 0001605660 · 10% owner

Nakache Patricia · CIK 0001597755 · Director · 10% owner

ORR LAWRENCE K · CIK 0001231094 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity X Side-By-Side Fund, L.P.

Disclosed balance after: 5,838

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: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F2 · ownership.nature: Trinity TVL X, LLC is the General Partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the Trinity Entities), and the Management Members of Trinity TVL X, LLC share voting and dispositive power over the shares held by each of the Trinity Entities. The Management Members of Trinity TVL X, LLC are Ajay Chopra, Noel Fenton, Nina Labatt, Patricia Nakache and Larry Orr. Each of Trinity TVL X, LLC, Mr. Chopra, Mr. Fenton, Ms. Labatt and Mr. Orr disclaims beneficial ownership of the shares reported herein except to the extent of his, her or its respective pecuniary interest therein. Ms. Nakache is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001484778-21-000045 · wf-form4_162794543042169.xml · nonDerivative · entry 2

Trinity TVL X, LLC · CIK 0001461710 · 10% owner

TRINITY VENTURES X LP · CIK 0001456065 · 10% owner

Trinity X Entrepreneurs' Fund, L.P. · CIK 0001461716 · 10% owner

Trinity X Side-By-Side Fund, L.P. · CIK 0001459208 · 10% owner

CHOPRA AJAY · CIK 0001228023 · 10% owner

Fenton Noel J · CIK 0001290449 · 10% owner

Labatt Nina C. · CIK 0001605660 · 10% owner

Nakache Patricia · CIK 0001597755 · Director · 10% owner

ORR LAWRENCE K · CIK 0001231094 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity X Entrepreneurs' Fund, L.P.

Disclosed balance after: 10,459

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: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F2 · ownership.nature: Trinity TVL X, LLC is the General Partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the Trinity Entities), and the Management Members of Trinity TVL X, LLC share voting and dispositive power over the shares held by each of the Trinity Entities. The Management Members of Trinity TVL X, LLC are Ajay Chopra, Noel Fenton, Nina Labatt, Patricia Nakache and Larry Orr. Each of Trinity TVL X, LLC, Mr. Chopra, Mr. Fenton, Ms. Labatt and Mr. Orr disclaims beneficial ownership of the shares reported herein except to the extent of his, her or its respective pecuniary interest therein. Ms. Nakache is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001484778-21-000045 · wf-form4_162794543042169.xml · nonDerivative · entry 1

Trinity TVL X, LLC · CIK 0001461710 · 10% owner

TRINITY VENTURES X LP · CIK 0001456065 · 10% owner

Trinity X Entrepreneurs' Fund, L.P. · CIK 0001461716 · 10% owner

Trinity X Side-By-Side Fund, L.P. · CIK 0001459208 · 10% owner

CHOPRA AJAY · CIK 0001228023 · 10% owner

Fenton Noel J · CIK 0001290449 · 10% owner

Labatt Nina C. · CIK 0001605660 · 10% owner

Nakache Patricia · CIK 0001597755 · Director · 10% owner

ORR LAWRENCE K · CIK 0001231094 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trinity Ventures X, L.P.

Disclosed balance after: 1,056,423

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: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder in connection with the registered public offering of shares of the Issuer's Class A Common Stock, pursuant to a final prospectus dated July 28, 2021, which offering was consummated on August 2, 2021.

F2 · ownership.nature: Trinity TVL X, LLC is the General Partner of Trinity Ventures X, L.P., Trinity X Entrepreneurs Fund, L.P. and Trinity X Side-By-Side Fund, L.P. (collectively, the Trinity Entities), and the Management Members of Trinity TVL X, LLC share voting and dispositive power over the shares held by each of the Trinity Entities. The Management Members of Trinity TVL X, LLC are Ajay Chopra, Noel Fenton, Nina Labatt, Patricia Nakache and Larry Orr. Each of Trinity TVL X, LLC, Mr. Chopra, Mr. Fenton, Ms. Labatt and Mr. Orr disclaims beneficial ownership of the shares reported herein except to the extent of his, her or its respective pecuniary interest therein. Ms. Nakache is a director of the Issuer and files separate Section 16 reports.

SEC source: 0000899243-21-030980 · doc4.xml · derivative · entry 6

GS INVESTMENT STRATEGIES, LLC · CIK 0001420392 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 5,071,228

Underlying: Class A Common Stock · 563,469 shares

Expires not disclosed

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.

F6 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F3 · kind: On August 2, 2021, Global Private Opportunities Partners II Offshore Holdings LP ("GPO II Offshore") converted 563,469 shares of Class B Common Stock for 563,469 shares of Class A Common Stock.

F6 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F6 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F4 · ownership.nature: These shares are held of record by GPO II Offshore. GSIS is the investment manager of the GPOP II Offshore. GSIS disclaims beneficial ownership of all shares of Common Stock in excess of their pecuniary interest, if any, and this report shall not be deemed an admission that any such person or entity is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0000899243-21-030980 · doc4.xml · derivative · entry 5

GS INVESTMENT STRATEGIES, LLC · CIK 0001420392 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 4,646,977

Underlying: Class A Common Stock · 516,331 shares

Expires not disclosed

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.

F6 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F1 · kind: On August 2, 2021, Global Private Opportunities Partners II LP ("GPO II LP") converted 516,331 shares of Class B Common Stock for 516,331 shares of Class A Common Stock.

F6 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F6 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F2 · ownership.nature: These shares are held of record by GPO II LP. GS Investment Strategies, LLC ("GSIS"), a limited liability company incorporated under the laws of Delaware, is the investment manager of the GPOP II. GSIS disclaims beneficial ownership of all shares of Common Stock in excess of their pecuniary interest, if any, and this report shall not be deemed an admission that any such person or entity is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0000899243-21-030980 · doc4.xml · nonDerivative · entry 4

GS INVESTMENT STRATEGIES, LLC · CIK 0001420392 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F5 · kind: Represents shares of Class A Common Stock sold in a secondary offering of Class A Common Stock by certain selling stockholders of the Issuer.

F4 · ownership.nature: These shares are held of record by GPO II Offshore. GSIS is the investment manager of the GPOP II Offshore. GSIS disclaims beneficial ownership of all shares of Common Stock in excess of their pecuniary interest, if any, and this report shall not be deemed an admission that any such person or entity is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0000899243-21-030980 · doc4.xml · nonDerivative · entry 3

GS INVESTMENT STRATEGIES, LLC · CIK 0001420392 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F5 · kind: Represents shares of Class A Common Stock sold in a secondary offering of Class A Common Stock by certain selling stockholders of the Issuer.

F2 · ownership.nature: These shares are held of record by GPO II LP. GS Investment Strategies, LLC ("GSIS"), a limited liability company incorporated under the laws of Delaware, is the investment manager of the GPOP II. GSIS disclaims beneficial ownership of all shares of Common Stock in excess of their pecuniary interest, if any, and this report shall not be deemed an admission that any such person or entity is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0000899243-21-030980 · doc4.xml · nonDerivative · entry 2

GS INVESTMENT STRATEGIES, LLC · CIK 0001420392 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 563,469

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 August 2, 2021, Global Private Opportunities Partners II Offshore Holdings LP ("GPO II Offshore") converted 563,469 shares of Class B Common Stock for 563,469 shares of Class A Common Stock.

F3 · price: On August 2, 2021, Global Private Opportunities Partners II Offshore Holdings LP ("GPO II Offshore") converted 563,469 shares of Class B Common Stock for 563,469 shares of Class A Common Stock.

F4 · ownership.nature: These shares are held of record by GPO II Offshore. GSIS is the investment manager of the GPOP II Offshore. GSIS disclaims beneficial ownership of all shares of Common Stock in excess of their pecuniary interest, if any, and this report shall not be deemed an admission that any such person or entity is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0000899243-21-030980 · doc4.xml · nonDerivative · entry 1

GS INVESTMENT STRATEGIES, LLC · CIK 0001420392 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 516,331

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 2, 2021, Global Private Opportunities Partners II LP ("GPO II LP") converted 516,331 shares of Class B Common Stock for 516,331 shares of Class A Common Stock.

F1 · price: On August 2, 2021, Global Private Opportunities Partners II LP ("GPO II LP") converted 516,331 shares of Class B Common Stock for 516,331 shares of Class A Common Stock.

F2 · ownership.nature: These shares are held of record by GPO II LP. GS Investment Strategies, LLC ("GSIS"), a limited liability company incorporated under the laws of Delaware, is the investment manager of the GPOP II. GSIS disclaims beneficial ownership of all shares of Common Stock in excess of their pecuniary interest, if any, and this report shall not be deemed an admission that any such person or entity is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001484778-21-000087 · wf-form4_163070091795469.xml · derivative · entry 8

Marino Anthony Salvatore · CIK 0001851770 · President

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 125,000

Underlying: Class A Common Stock · 125,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F7 · kind: On July 15, 2021, the Reporting Person transferred 125,000 shares of the Issuer's Class B Common Stock to The Courtney Erin Marino 2021 Annuity Trust (the "Courtney Marino GRAT"), of which the Reporting Person's spouse is the trustee, for the benefit of the Reporting Person's spouse. This was a bona fide gift with no payment in consideration.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F8 · ownership.nature: Shares held of record by the Courtney Marino GRAT.

SEC source: 0001484778-21-000087 · wf-form4_163070091795469.xml · derivative · entry 7

Marino Anthony Salvatore · CIK 0001851770 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,660

Underlying: Class A Common Stock · 125,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F7 · kind: On July 15, 2021, the Reporting Person transferred 125,000 shares of the Issuer's Class B Common Stock to The Courtney Erin Marino 2021 Annuity Trust (the "Courtney Marino GRAT"), of which the Reporting Person's spouse is the trustee, for the benefit of the Reporting Person's spouse. This was a bona fide gift with no payment in consideration.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

SEC source: 0001484778-21-000087 · wf-form4_163070091795469.xml · derivative · entry 6

Marino Anthony Salvatore · CIK 0001851770 · President

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 125,000

Underlying: Class A Common Stock · 125,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F5 · kind: On July 15, 2021, the Reporting Person transferred 125,000 shares of the Issuer's Class B Common Stock to The Anthony Salvatore Marino 2021 Annuity Trust (the "Anthony Marino GRAT"). This was a bona fide gift with no payment in consideration.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F6 · ownership.nature: Shares held of record by the Anthony Marino GRAT.

SEC source: 0001484778-21-000087 · wf-form4_163070091795469.xml · derivative · entry 5

Marino Anthony Salvatore · CIK 0001851770 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 134,660

Underlying: Class A Common Stock · 125,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F5 · kind: On July 15, 2021, the Reporting Person transferred 125,000 shares of the Issuer's Class B Common Stock to The Anthony Salvatore Marino 2021 Annuity Trust (the "Anthony Marino GRAT"). This was a bona fide gift with no payment in consideration.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

SEC source: 0001484778-21-000030 · wf-form4_162560972288810.xml · derivative · entry 2

Rotem Alon · CIK 0001850186 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 20,396 shares

Expires not disclosed

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_price: Each share of Class B is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F1 · kind: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder.

F2 · derivative.exercise_date: Each share of Class B is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

F2 · derivative.expiration_date: Each share of Class B is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

SEC source: 0001484778-21-000030 · wf-form4_162560972288810.xml · nonDerivative · entry 1

Rotem Alon · CIK 0001850186 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,396

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: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock at the option of the holder.

SEC source: 0001484778-21-000017 · wf-form4_162033307081503.xml · nonDerivative · entry 1

MATTHEWS NORMAN S · CIK 0001178445 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,404

F1 · kind: Grant of fully vested restricted stock units ("RSUs") under the Issuer's 2021 Stock Option and Incentive Plan in a transaction exempt under Rule 16b-3. Each unit represents a right to receive one share of the Issuer's Class A Common Stock. The Reporting Person elected to receive RSUs in lieu of his annual cash retainer, which retainer is paid in quarterly installments.

SEC source: 0001484778-21-000016 · wf-form4_162033301751314.xml · nonDerivative · entry 1

Vu Marcie · CIK 0001849459 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,261

F1 · kind: Grant of fully vested restricted stock units ("RSUs") under the Issuer's 2021 Stock Option and Incentive Plan in a transaction exempt under Rule 16b-3. Each unit represents a right to receive one share of the Issuer's Class A Common Stock. The Reporting Person elected to receive RSUs in lieu of her annual cash retainer, which retainer is paid in quarterly installments.

SEC source: 0001484778-21-000015 · wf-form4_162033298312394.xml · nonDerivative · entry 1

Nakache Patricia · CIK 0001597755 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,749

F1 · kind: Grant of fully vested restricted stock units ("RSUs") under the Issuer's 2021 Stock Option and Incentive Plan in a transaction exempt under Rule 16b-3. Each unit represents a right to receive one share of the Issuer's Class A Common Stock. The Reporting Person elected to receive RSUs in lieu of her annual cash retainer, which retainer is paid in quarterly installments.

SEC source: 0001484778-21-000014 · wf-form4_162033294472315.xml · nonDerivative · entry 1

HALEY TIMOTHY M · CIK 0001201583 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,473

F1 · kind: Grant of fully vested restricted stock units ("RSUs") under the Issuer's 2021 Stock Option and Incentive Plan in a transaction exempt under Rule 16b-3. Each unit represents a right to receive one share of the Issuer's Class A Common Stock. The Reporting Person elected to receive RSUs in lieu of his annual cash retainer, which retainer is paid in quarterly installments.

SEC source: 0001484778-21-000013 · wf-form4_162033290406927.xml · nonDerivative · entry 1

Friedman Ian · CIK 0001834575 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,404

F1 · kind: Grant of fully vested restricted stock units ("RSUs") under the Issuer's 2021 Stock Option and Incentive Plan in a transaction exempt under Rule 16b-3. Each unit represents a right to receive one share of the Issuer's Class A Common Stock. The Reporting Person elected to receive RSUs in lieu of his annual cash retainer, which retainer is paid in quarterly installments.

SEC source: 0001484778-21-000011 · wf-form4_162033284661372.xml · nonDerivative · entry 1

Ginsberg Amanda · CIK 0001596941 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,832

F1 · kind: Grant of fully vested restricted stock units ("RSUs") under the Issuer's 2021 Stock Option and Incentive Plan in a transaction exempt under Rule 16b-3. Each unit represents a right to receive one share of the Issuer's Class A Common Stock. The Reporting Person elected to receive RSUs in lieu of her annual cash retainer, which retainer is paid in quarterly installments.

SEC source: 0001484778-21-000012 · wf-form4_162033287252976.xml · nonDerivative · entry 1

Sutter Paula · CIK 0001849441 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,404

F1 · kind: Grant of fully vested restricted stock units ("RSUs") under the Issuer's 2021 Stock Option and Incentive Plan in a transaction exempt under Rule 16b-3. Each unit represents a right to receive one share of the Issuer's Class A Common Stock. The Reporting Person elected to receive RSUs in lieu of her annual cash retainer, which retainer is paid in quarterly installments.

SEC source: 0001628280-21-006411 · wf-form4_161731506340089.xml · derivative · entry 17

Homer Christopher · CIK 0001850197 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 387,855

Underlying: Class B Common Stock · 387,855 shares

Expires 2021-08-25

F1 · kind: Immediately prior to the closing of the Issuer's initial public offering and following the conversion of each series of the Issuer's convertible preferred stock into Common Stock, each share of Common Stock was reclassified into one share of Class B Common Stock in an exempt transaction pursuant to Rule 16b-7.

F5 · derivative.exercise_date: 50% of the shares subject to the option shall vest and become exercisable in 48 equal monthly installments commencing as of the First Tranche Vesting Commencement Date, subject to the Reporting Person's continued service with the Issuer through each such date. "First Tranche Vesting Commencement Date" means the later of January 1, 2021 or the Issuer's initial public offering. The remaining 50% of the shares subject to the option shall vest and become exercisable in 48 equal monthly installments commencing as of the Second Tranche Vesting Commencement Date, subject to the Reporting Person's continued service with the Issuer through each such date. "Second Tranche Vesting Commencement Date" means the later of January 1, 2022 or the one year anniversary of the Issuer's initial public offering.

F2 · derivative.underlying: Each share of Class B is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.

SEC source: 0001628280-21-006411 · wf-form4_161731506340089.xml · derivative · entry 16

Homer Christopher · CIK 0001850197 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 387,855 shares

Expires 2030-08-25

F1 · kind: Immediately prior to the closing of the Issuer's initial public offering and following the conversion of each series of the Issuer's convertible preferred stock into Common Stock, each share of Common Stock was reclassified into one share of Class B Common Stock in an exempt transaction pursuant to Rule 16b-7.

F5 · derivative.exercise_date: 50% of the shares subject to the option shall vest and become exercisable in 48 equal monthly installments commencing as of the First Tranche Vesting Commencement Date, subject to the Reporting Person's continued service with the Issuer through each such date. "First Tranche Vesting Commencement Date" means the later of January 1, 2021 or the Issuer's initial public offering. The remaining 50% of the shares subject to the option shall vest and become exercisable in 48 equal monthly installments commencing as of the Second Tranche Vesting Commencement Date, subject to the Reporting Person's continued service with the Issuer through each such date. "Second Tranche Vesting Commencement Date" means the later of January 1, 2022 or the one year anniversary of the Issuer's initial public offering.

SEC source: 0001628280-21-006411 · wf-form4_161731506340089.xml · derivative · entry 15

Homer Christopher · CIK 0001850197 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 613,718

Underlying: Class B Common Stock · 613,718 shares

Expires 2029-05-21

F1 · kind: Immediately prior to the closing of the Issuer's initial public offering and following the conversion of each series of the Issuer's convertible preferred stock into Common Stock, each share of Common Stock was reclassified into one share of Class B Common Stock in an exempt transaction pursuant to Rule 16b-7.

F4 · derivative.exercise_date: The stock option vests in 24 equal monthly installments after May 15, 2021, subject to the Reporting Person's continued service to the Issuer as of each vesting date.

F2 · derivative.underlying: Each share of Class B is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation.