DDOG

SEC source: 0001209191-20-049498 · doc4.xml · nonDerivative · entry 9

Le-Quoc Alexis · CIK 0001783984 · Director · President & CTO

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 37,854

F3 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 6, 2019.

F11 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $83.91 to $84.90. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F9 · ownership.nature: Shares are held by the Alexis Le-Quoc 2016 GRAT.

SEC source: 0001209191-20-049498 · doc4.xml · nonDerivative · entry 8

Le-Quoc Alexis · CIK 0001783984 · Director · President & CTO

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 43,356

F3 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 6, 2019.

F10 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $82.78 to $83.70. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F9 · ownership.nature: Shares are held by the Alexis Le-Quoc 2016 GRAT.

SEC source: 0001209191-20-049498 · doc4.xml · nonDerivative · entry 7

Le-Quoc Alexis · CIK 0001783984 · Director · President & CTO

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 43,956

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 is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · price: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F9 · ownership.nature: Shares are held by the Alexis Le-Quoc 2016 GRAT.

SEC source: 0001209191-20-049498 · doc4.xml · nonDerivative · entry 6

Le-Quoc Alexis · CIK 0001783984 · Director · President & CTO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F3 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 6, 2019.

F8 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $86.98 to $87.35. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F2 · ownership.nature: Shares are held by the Alexis Le-Quoc Revocable Trust.

SEC source: 0001209191-20-049498 · doc4.xml · nonDerivative · entry 5

Le-Quoc Alexis · CIK 0001783984 · Director · President & CTO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 1,118

F3 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 6, 2019.

F7 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $85.92 to $86.91. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F2 · ownership.nature: Shares are held by the Alexis Le-Quoc Revocable Trust.

SEC source: 0001209191-20-049498 · doc4.xml · nonDerivative · entry 4

Le-Quoc Alexis · CIK 0001783984 · Director · President & CTO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 26,825

F3 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 6, 2019.

F6 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $84.92 to $85.91. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F2 · ownership.nature: Shares are held by the Alexis Le-Quoc Revocable Trust.

SEC source: 0001209191-20-049498 · doc4.xml · nonDerivative · entry 3

Le-Quoc Alexis · CIK 0001783984 · Director · President & CTO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 145,242

F3 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 6, 2019.

F5 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $83.92 to $84.91. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F2 · ownership.nature: Shares are held by the Alexis Le-Quoc Revocable Trust.

SEC source: 0001209191-20-049498 · doc4.xml · nonDerivative · entry 2

Le-Quoc Alexis · CIK 0001783984 · Director · President & CTO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 168,061

F3 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 6, 2019.

F4 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $82.85 to $83.75. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F2 · ownership.nature: Shares are held by the Alexis Le-Quoc Revocable Trust.

SEC source: 0001209191-20-049498 · doc4.xml · nonDerivative · entry 1

Le-Quoc Alexis · CIK 0001783984 · Director · President & CTO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 170,389

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 is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · price: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F2 · ownership.nature: Shares are held by the Alexis Le-Quoc Revocable Trust.

SEC source: 0001209191-20-049494 · doc4.xml · derivative · entry 21

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 300,000

Underlying: Class B Common Stock · 37,500 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.

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · kind: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F14 · ownership.nature: Shares are held by the Pomel Descendents' 2018 Trust. Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest, if any, in the shares.

SEC source: 0001209191-20-049494 · doc4.xml · derivative · entry 20

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 4,050,000

Underlying: Class B Common Stock · 56,250 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.

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · kind: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F8 · ownership.nature: Shares are held by the Olivier Pomel 2018 GRAT.

SEC source: 0001209191-20-049494 · doc4.xml · derivative · entry 19

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,847,568

Underlying: Class B Common Stock · 165,596 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.

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · kind: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 18

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F15 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 6, 2019.

F20 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $86.91 to $87.27. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F14 · ownership.nature: Shares are held by the Pomel Descendents' 2018 Trust. Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest, if any, in the shares.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 17

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 300

F15 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 6, 2019.

F19 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $85.89 to $86.64. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F14 · ownership.nature: Shares are held by the Pomel Descendents' 2018 Trust. Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest, if any, in the shares.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 16

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 6,410

F15 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 6, 2019.

F18 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $84.89 to $85.88. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F14 · ownership.nature: Shares are held by the Pomel Descendents' 2018 Trust. Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest, if any, in the shares.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 15

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 32,672

F15 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 6, 2019.

F17 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $83.89 to $84.88. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F14 · ownership.nature: Shares are held by the Pomel Descendents' 2018 Trust. Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest, if any, in the shares.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 14

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 37,000

F15 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 6, 2019.

F16 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $82.83 to $83.69. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F14 · ownership.nature: Shares are held by the Pomel Descendents' 2018 Trust. Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest, if any, in the shares.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 13

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 37,500

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 is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · price: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F14 · ownership.nature: Shares are held by the Pomel Descendents' 2018 Trust. Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest, if any, in the shares.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 12

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 0

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 7, 2019.

F13 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $86.97 to $87.29. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F8 · ownership.nature: Shares are held by the Olivier Pomel 2018 GRAT.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 11

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 400

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 7, 2019.

F12 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $85.96 to $86.84. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F8 · ownership.nature: Shares are held by the Olivier Pomel 2018 GRAT.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 10

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 8,144

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 7, 2019.

F11 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $84.96 to $85.95. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F8 · ownership.nature: Shares are held by the Olivier Pomel 2018 GRAT.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 9

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 46,911

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 7, 2019.

F10 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $83.96 to $84.95. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F8 · ownership.nature: Shares are held by the Olivier Pomel 2018 GRAT.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 8

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 55,450

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 7, 2019.

F9 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $82.78 to $83.70. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F8 · ownership.nature: Shares are held by the Olivier Pomel 2018 GRAT.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 7

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 56,250

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 is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · price: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F8 · ownership.nature: Shares are held by the Olivier Pomel 2018 GRAT.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 6

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 163,621

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 7, 2019.

F7 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $86.88 to $87.27. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 5

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 165,205

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 7, 2019.

F6 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $85.87 to $86.85. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 4

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 193,328

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 7, 2019.

F5 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $84.87 to $85.86. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 3

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 309,329

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 7, 2019.

F4 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $83.87 to $84.86. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 2

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 327,001

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 7, 2019.

F3 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $82.76 to $83.75. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-049494 · doc4.xml · nonDerivative · entry 1

Pomel Olivier · CIK 0001783990 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 329,217

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 is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · price: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

SEC source: 0000899243-20-023759 · doc4.xml · derivative · entry 14

Index Ventures VI (Jersey) LP · CIK 0001754862 · 10% owner

Index Ventures Growth III (Jersey), L.P. · CIK 0001638260 · 10% owner

Index Ventures VI Parallel Entrepreneur Fund (Jersey) LP · CIK 0001754871 · 10% owner

Yucca (Jersey) SLP · CIK 0001591294 · 10% owner

Index Venture Growth Associates III Ltd · CIK 0001785453 · 10% owner

Index Venture Associates VI Ltd · CIK 0001755035 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 432,382

Underlying: Class A Common Stock · 35,033 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.

F12 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F7 · kind: On August 28, 2020, Yucca (Jersey) SLP ("Yucca") converted in the aggregate 35,033 shares of the Issuer's Class B Common Stock into 35,033 shares of the Issuer's Class A Common Stock.

F12 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F12 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F8 · ownership.direct: The shares are held by Yucca. Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant Fund's investment in the Issuer (in this case, Index Growth III, Index VI and Index VI Parallel). Each of IVGA III and IVA VI disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose.

SEC source: 0000899243-20-023759 · doc4.xml · derivative · entry 13

Index Ventures VI (Jersey) LP · CIK 0001754862 · 10% owner

Index Ventures Growth III (Jersey), L.P. · CIK 0001638260 · 10% owner

Index Ventures VI Parallel Entrepreneur Fund (Jersey) LP · CIK 0001754871 · 10% owner

Yucca (Jersey) SLP · CIK 0001591294 · 10% owner

Index Venture Growth Associates III Ltd · CIK 0001785453 · 10% owner

Index Venture Associates VI Ltd · CIK 0001755035 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 483,847

Underlying: Class A Common Stock · 39,203 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.

F12 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F5 · kind: On August 28, 2020, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 39,203 shares of the Issuer's Class B Common Stock into 39,203 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 39,203 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, IVA VI, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 9,801 shares of Class A Common Stock received in the Index VI Parallel distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F12 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F12 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F6 · ownership.direct: The shares are held by Index VI Parallel. IVA VI is the general partner of Index VI Parallel and disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose.

SEC source: 0000899243-20-023759 · doc4.xml · derivative · entry 12

Index Ventures VI (Jersey) LP · CIK 0001754862 · 10% owner

Index Ventures Growth III (Jersey), L.P. · CIK 0001638260 · 10% owner

Index Ventures VI Parallel Entrepreneur Fund (Jersey) LP · CIK 0001754871 · 10% owner

Yucca (Jersey) SLP · CIK 0001591294 · 10% owner

Index Venture Growth Associates III Ltd · CIK 0001785453 · 10% owner

Index Venture Associates VI Ltd · CIK 0001755035 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,970,467

Underlying: Class A Common Stock · 1,942,146 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.

F12 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F3 · kind: On August 28, 2020, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 1,942,146 shares of the Issuer's Class B Common Stock into 1,942,146 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 1,942,146 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, Index Venture Associates VI Limited ("IVA VI"), in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 485,537 shares of Class A Common Stock received in the Index VI distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F12 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F12 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F4 · ownership.direct: The shares are held by Index VI. IVA VI is the general partner of Index VI and disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose.

SEC source: 0000899243-20-023759 · doc4.xml · derivative · entry 11

Index Ventures VI (Jersey) LP · CIK 0001754862 · 10% owner

Index Ventures Growth III (Jersey), L.P. · CIK 0001638260 · 10% owner

Index Ventures VI Parallel Entrepreneur Fund (Jersey) LP · CIK 0001754871 · 10% owner

Yucca (Jersey) SLP · CIK 0001591294 · 10% owner

Index Venture Growth Associates III Ltd · CIK 0001785453 · 10% owner

Index Venture Associates VI Ltd · CIK 0001755035 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,067,113

Underlying: Class A Common Stock · 653,618 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.

F12 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · kind: On August 28, 2020, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 653,618 shares of the Issuer's Class B Common Stock into 653,618 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 653,618 shares of Class A Common Stock pro-rata to its limited partners, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F12 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F12 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F2 · ownership.direct: The shares are held by Index Growth III. Index Venture Growth Associates III Limited ("IVGA III") is the general partner of Index Growth III and disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose.

SEC source: 0000899243-20-023759 · doc4.xml · nonDerivative · entry 10

Index Ventures VI (Jersey) LP · CIK 0001754862 · 10% owner

Index Ventures Growth III (Jersey), L.P. · CIK 0001638260 · 10% owner

Index Ventures VI Parallel Entrepreneur Fund (Jersey) LP · CIK 0001754871 · 10% owner

Yucca (Jersey) SLP · CIK 0001591294 · 10% owner

Index Venture Growth Associates III Ltd · CIK 0001785453 · 10% owner

Index Venture Associates VI Ltd · CIK 0001755035 · 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

F11 · price: On August 28, 2020, Yucca sold 4,499 shares of the Issuer's Class A Common Stock. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $86.00 to $86.25, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F8 · ownership.direct: The shares are held by Yucca. Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant Fund's investment in the Issuer (in this case, Index Growth III, Index VI and Index VI Parallel). Each of IVGA III and IVA VI disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose.

SEC source: 0000899243-20-023759 · doc4.xml · nonDerivative · entry 9

Index Ventures VI (Jersey) LP · CIK 0001754862 · 10% owner

Index Ventures Growth III (Jersey), L.P. · CIK 0001638260 · 10% owner

Index Ventures VI Parallel Entrepreneur Fund (Jersey) LP · CIK 0001754871 · 10% owner

Yucca (Jersey) SLP · CIK 0001591294 · 10% owner

Index Venture Growth Associates III Ltd · CIK 0001785453 · 10% owner

Index Venture Associates VI Ltd · CIK 0001755035 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,499

F10 · price: On August 28, 2020, Yucca sold 11,480 shares of the Issuer's Class A Common Stock. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $85.00 to $85.99, 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 range set forth in this footnote.

F8 · ownership.direct: The shares are held by Yucca. Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant Fund's investment in the Issuer (in this case, Index Growth III, Index VI and Index VI Parallel). Each of IVGA III and IVA VI disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose.

SEC source: 0000899243-20-023759 · doc4.xml · nonDerivative · entry 8

Index Ventures VI (Jersey) LP · CIK 0001754862 · 10% owner

Index Ventures Growth III (Jersey), L.P. · CIK 0001638260 · 10% owner

Index Ventures VI Parallel Entrepreneur Fund (Jersey) LP · CIK 0001754871 · 10% owner

Yucca (Jersey) SLP · CIK 0001591294 · 10% owner

Index Venture Growth Associates III Ltd · CIK 0001785453 · 10% owner

Index Venture Associates VI Ltd · CIK 0001755035 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,979

F9 · price: On August 28, 2020, Yucca sold 19,054 shares of the Issuer's Class A Common Stock. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $83.02 to $83.40, 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 range set forth in this footnote.

F8 · ownership.direct: The shares are held by Yucca. Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant Fund's investment in the Issuer (in this case, Index Growth III, Index VI and Index VI Parallel). Each of IVGA III and IVA VI disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose.

SEC source: 0000899243-20-023759 · doc4.xml · nonDerivative · entry 7

Index Ventures VI (Jersey) LP · CIK 0001754862 · 10% owner

Index Ventures Growth III (Jersey), L.P. · CIK 0001638260 · 10% owner

Index Ventures VI Parallel Entrepreneur Fund (Jersey) LP · CIK 0001754871 · 10% owner

Yucca (Jersey) SLP · CIK 0001591294 · 10% owner

Index Venture Growth Associates III Ltd · CIK 0001785453 · 10% owner

Index Venture Associates VI Ltd · CIK 0001755035 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,033

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.

F7 · kind: On August 28, 2020, Yucca (Jersey) SLP ("Yucca") converted in the aggregate 35,033 shares of the Issuer's Class B Common Stock into 35,033 shares of the Issuer's Class A Common Stock.

F7 · price: On August 28, 2020, Yucca (Jersey) SLP ("Yucca") converted in the aggregate 35,033 shares of the Issuer's Class B Common Stock into 35,033 shares of the Issuer's Class A Common Stock.

F8 · ownership.direct: The shares are held by Yucca. Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant Fund's investment in the Issuer (in this case, Index Growth III, Index VI and Index VI Parallel). Each of IVGA III and IVA VI disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose.

SEC source: 0000899243-20-023759 · doc4.xml · nonDerivative · entry 6

Index Ventures VI (Jersey) LP · CIK 0001754862 · 10% owner

Index Ventures Growth III (Jersey), L.P. · CIK 0001638260 · 10% owner

Index Ventures VI Parallel Entrepreneur Fund (Jersey) LP · CIK 0001754871 · 10% owner

Yucca (Jersey) SLP · CIK 0001591294 · 10% owner

Index Venture Growth Associates III Ltd · CIK 0001785453 · 10% owner

Index Venture Associates VI Ltd · CIK 0001755035 · 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

F5 · kind: On August 28, 2020, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 39,203 shares of the Issuer's Class B Common Stock into 39,203 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 39,203 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, IVA VI, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 9,801 shares of Class A Common Stock received in the Index VI Parallel distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F5 · price: On August 28, 2020, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 39,203 shares of the Issuer's Class B Common Stock into 39,203 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 39,203 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, IVA VI, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 9,801 shares of Class A Common Stock received in the Index VI Parallel distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F6 · ownership.direct: The shares are held by Index VI Parallel. IVA VI is the general partner of Index VI Parallel and disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose.

SEC source: 0000899243-20-023759 · doc4.xml · nonDerivative · entry 5

Index Ventures VI (Jersey) LP · CIK 0001754862 · 10% owner

Index Ventures Growth III (Jersey), L.P. · CIK 0001638260 · 10% owner

Index Ventures VI Parallel Entrepreneur Fund (Jersey) LP · CIK 0001754871 · 10% owner

Yucca (Jersey) SLP · CIK 0001591294 · 10% owner

Index Venture Growth Associates III Ltd · CIK 0001785453 · 10% owner

Index Venture Associates VI Ltd · CIK 0001755035 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,203

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.

F5 · kind: On August 28, 2020, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 39,203 shares of the Issuer's Class B Common Stock into 39,203 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 39,203 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, IVA VI, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 9,801 shares of Class A Common Stock received in the Index VI Parallel distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F5 · price: On August 28, 2020, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 39,203 shares of the Issuer's Class B Common Stock into 39,203 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 39,203 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, IVA VI, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 9,801 shares of Class A Common Stock received in the Index VI Parallel distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F6 · ownership.direct: The shares are held by Index VI Parallel. IVA VI is the general partner of Index VI Parallel and disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose.

SEC source: 0000899243-20-023759 · doc4.xml · nonDerivative · entry 4

Index Ventures VI (Jersey) LP · CIK 0001754862 · 10% owner

Index Ventures Growth III (Jersey), L.P. · CIK 0001638260 · 10% owner

Index Ventures VI Parallel Entrepreneur Fund (Jersey) LP · CIK 0001754871 · 10% owner

Yucca (Jersey) SLP · CIK 0001591294 · 10% owner

Index Venture Growth Associates III Ltd · CIK 0001785453 · 10% owner

Index Venture Associates VI Ltd · CIK 0001755035 · 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

F3 · kind: On August 28, 2020, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 1,942,146 shares of the Issuer's Class B Common Stock into 1,942,146 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 1,942,146 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, Index Venture Associates VI Limited ("IVA VI"), in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 485,537 shares of Class A Common Stock received in the Index VI distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F3 · price: On August 28, 2020, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 1,942,146 shares of the Issuer's Class B Common Stock into 1,942,146 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 1,942,146 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, Index Venture Associates VI Limited ("IVA VI"), in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 485,537 shares of Class A Common Stock received in the Index VI distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F4 · ownership.direct: The shares are held by Index VI. IVA VI is the general partner of Index VI and disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose.

SEC source: 0000899243-20-023759 · doc4.xml · nonDerivative · entry 3

Index Ventures VI (Jersey) LP · CIK 0001754862 · 10% owner

Index Ventures Growth III (Jersey), L.P. · CIK 0001638260 · 10% owner

Index Ventures VI Parallel Entrepreneur Fund (Jersey) LP · CIK 0001754871 · 10% owner

Yucca (Jersey) SLP · CIK 0001591294 · 10% owner

Index Venture Growth Associates III Ltd · CIK 0001785453 · 10% owner

Index Venture Associates VI Ltd · CIK 0001755035 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,942,147

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 28, 2020, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 1,942,146 shares of the Issuer's Class B Common Stock into 1,942,146 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 1,942,146 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, Index Venture Associates VI Limited ("IVA VI"), in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 485,537 shares of Class A Common Stock received in the Index VI distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F3 · price: On August 28, 2020, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 1,942,146 shares of the Issuer's Class B Common Stock into 1,942,146 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 1,942,146 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, Index Venture Associates VI Limited ("IVA VI"), in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 485,537 shares of Class A Common Stock received in the Index VI distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F4 · ownership.direct: The shares are held by Index VI. IVA VI is the general partner of Index VI and disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose.

SEC source: 0000899243-20-023759 · doc4.xml · nonDerivative · entry 2

Index Ventures VI (Jersey) LP · CIK 0001754862 · 10% owner

Index Ventures Growth III (Jersey), L.P. · CIK 0001638260 · 10% owner

Index Ventures VI Parallel Entrepreneur Fund (Jersey) LP · CIK 0001754871 · 10% owner

Yucca (Jersey) SLP · CIK 0001591294 · 10% owner

Index Venture Growth Associates III Ltd · CIK 0001785453 · 10% owner

Index Venture Associates VI Ltd · CIK 0001755035 · 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

F1 · kind: On August 28, 2020, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 653,618 shares of the Issuer's Class B Common Stock into 653,618 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 653,618 shares of Class A Common Stock pro-rata to its limited partners, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F1 · price: On August 28, 2020, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 653,618 shares of the Issuer's Class B Common Stock into 653,618 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 653,618 shares of Class A Common Stock pro-rata to its limited partners, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F2 · ownership.direct: The shares are held by Index Growth III. Index Venture Growth Associates III Limited ("IVGA III") is the general partner of Index Growth III and disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose.

SEC source: 0000899243-20-023759 · doc4.xml · nonDerivative · entry 1

Index Ventures VI (Jersey) LP · CIK 0001754862 · 10% owner

Index Ventures Growth III (Jersey), L.P. · CIK 0001638260 · 10% owner

Index Ventures VI Parallel Entrepreneur Fund (Jersey) LP · CIK 0001754871 · 10% owner

Yucca (Jersey) SLP · CIK 0001591294 · 10% owner

Index Venture Growth Associates III Ltd · CIK 0001785453 · 10% owner

Index Venture Associates VI Ltd · CIK 0001755035 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 653,618

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 28, 2020, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 653,618 shares of the Issuer's Class B Common Stock into 653,618 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 653,618 shares of Class A Common Stock pro-rata to its limited partners, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F1 · price: On August 28, 2020, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 653,618 shares of the Issuer's Class B Common Stock into 653,618 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 653,618 shares of Class A Common Stock pro-rata to its limited partners, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F2 · ownership.direct: The shares are held by Index Growth III. Index Venture Growth Associates III Limited ("IVGA III") is the general partner of Index Growth III and disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose.

SEC source: 0000899243-20-023760 · doc4.xml · derivative · entry 15

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 432,382

Underlying: Class A Common Stock · 35,033 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.

F13 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F7 · kind: On August 28, 2020, Yucca (Jersey) SLP ("Yucca") converted in the aggregate 35,033 shares of the Issuer's Class B Common Stock into 35,033 shares of the Issuer's Class A Common Stock.

F13 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F13 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F8 · ownership.nature: The shares are held by Yucca. Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant Fund's investment in the Issuer (in this case, Index Growth III, Index VI and Index VI Parallel). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000899243-20-023760 · doc4.xml · derivative · entry 14

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 483,847

Underlying: Class A Common Stock · 39,203 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.

F13 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F5 · kind: On August 28, 2020, Index VI Parallel converted in the aggregate 39,203 shares of the Issuer's Class B Common Stock into 39,203 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 39,203 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, IVA VI, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 9,801 shares of Class A Common Stock received in the Index VI Parallel distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F13 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F13 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F6 · ownership.nature: The shares are held by Index VI Parallel. IVA VI is the general partner of Index VI Parallel. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000899243-20-023760 · doc4.xml · derivative · entry 13

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 23,970,467

Underlying: Class A Common Stock · 1,942,146 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.

F13 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F3 · kind: On August 28, 2020, Index VI converted in the aggregate 1,942,146 shares of the Issuer's Class B Common Stock into 1,942,146 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 1,942,146 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, Index Venture Associates VI Limited ("IVA VI"), in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 485,537 shares of Class A Common Stock received in the Index VI distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F13 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F13 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F4 · ownership.nature: The shares are held by Index VI. IVA VI is the general partner of Index VI. The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000899243-20-023760 · doc4.xml · derivative · entry 12

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 8,067,113

Underlying: Class A Common Stock · 653,618 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.

F13 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F1 · kind: On August 28, 2020, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 653,618 shares of the Issuer's Class B Common Stock into 653,618 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 653,618 shares of Class A Common Stock pro-rata to its limited partners, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F13 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F13 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F2 · ownership.nature: The shares are held by Index Growth III. Index Venture Growth Associates III Limited ("IVGA III") is the general partner of Index Growth III. The Reporting Person is a partner within the Index Ventures group. Advisors within the Index Ventures group provide advice to each of Index Growth III, Index Ventures VI (Jersey) L.P. ("Index VI"), and Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel" and together with Index Growth III and Index VI, the "Funds"). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000899243-20-023760 · doc4.xml · nonDerivative · entry 10

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F11 · price: On August 28, 2020, Yucca sold 4,499 shares of the Issuer's Class A Common Stock. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $86.00 to $86.25, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F8 · ownership.nature: The shares are held by Yucca. Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant Fund's investment in the Issuer (in this case, Index Growth III, Index VI and Index VI Parallel). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000899243-20-023760 · doc4.xml · nonDerivative · entry 9

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 4,499

F10 · price: On August 28, 2020, Yucca sold 11,480 shares of the Issuer's Class A Common Stock. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $85.00 to $85.99, 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 range set forth in this footnote.

F8 · ownership.nature: The shares are held by Yucca. Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant Fund's investment in the Issuer (in this case, Index Growth III, Index VI and Index VI Parallel). The Reporting Person disclaims Section 16 beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.