DDOG

SEC source: 0001209191-21-034924 · doc4.xml · nonDerivative · entry 10

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Spouse

Disclosed balance after: 420

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on September 2, 2020.

F10 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $83.22 to $84.18. 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.

F7 · ownership.nature: Shares are held by Reporting Person's spouse.

SEC source: 0001209191-21-034924 · doc4.xml · nonDerivative · entry 9

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Spouse

Disclosed balance after: 700

F1 · kind: 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 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 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 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $82.22 to $83.14. 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.

F7 · ownership.nature: Shares are held by Reporting Person's spouse.

SEC source: 0001209191-21-034924 · doc4.xml · nonDerivative · entry 8

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Spouse

Disclosed balance after: 820

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on September 2, 2020.

F8 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $80.81 to $81.52. 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.

F7 · ownership.nature: Shares are held by Reporting Person's spouse.

SEC source: 0001209191-21-034924 · doc4.xml · nonDerivative · entry 7

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Spouse

Disclosed balance after: 1,000

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

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on September 2, 2020.

F1 · 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 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 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.

F7 · ownership.nature: Shares are held by Reporting Person's spouse.

SEC source: 0001209191-21-034924 · doc4.xml · nonDerivative · entry 6

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 177,157

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on September 2, 2020.

SEC source: 0001209191-21-034924 · doc4.xml · nonDerivative · entry 5

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 177,257

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on September 2, 2020.

F6 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $84.21 to $85.14. 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: 0001209191-21-034924 · doc4.xml · nonDerivative · entry 4

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 180,438

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on September 2, 2020.

F5 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $83.20 to $84.18. 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: 0001209191-21-034924 · doc4.xml · nonDerivative · entry 3

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 183,047

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on September 2, 2020.

F4 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $82.13 to $83.08. 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: 0001209191-21-034924 · doc4.xml · nonDerivative · entry 2

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 183,747

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on September 2, 2020.

F3 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $80.85 to $81.50. 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: 0001209191-21-034924 · doc4.xml · nonDerivative · entry 1

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 184,657

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 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 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 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 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 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 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: 0000899243-21-019914 · doc4.xml · derivative · entry 21

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: 243,542

Underlying: Class A Common Stock · 48,709 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.

F15 · 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.

F13 · kind: On May 17, 2021, Yucca (Jersey) SLP ("Yucca") converted in the aggregate 48,709 shares of the Issuer's Class B Common Stock into 48,709 shares of the Issuer's Class A Common Stock.

F15 · 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.

F15 · 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.

F14 · 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: 0000899243-21-019914 · doc4.xml · derivative · entry 20

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: 272,532

Underlying: Class A Common Stock · 54,506 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.

F15 · 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.

F10 · kind: On May 17, 2021, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 54,506 shares of the Issuer's Class B Common Stock into 54,506 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 54,506 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 13,627 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.

F15 · 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.

F15 · 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.

F11 · 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: 0000899243-21-019914 · doc4.xml · derivative · entry 19

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: 13,501,566

Underlying: Class A Common Stock · 2,700,313 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.

F15 · 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.

F8 · kind: On May 17, 2021, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 2,700,313 shares of the Issuer's Class B Common Stock into 2,700,313 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 2,700,313 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 675,078 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.

F15 · 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.

F15 · 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.

F9 · 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: 0000899243-21-019914 · doc4.xml · derivative · entry 18

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: 4,543,868

Underlying: Class A Common Stock · 908,774 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.

F15 · 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 May 17, 2021, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 908,774 shares of the Issuer's Class B Common Stock into 908,774 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 908,774 shares of Class A Common Stock pro-rata to its limited partners and its general partner, Index Venture Growth Associates III Limited ("IVGA III"), 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, IVGA III distributed in-kind, without consideration, 224,285 shares of Class A Common Stock received in the Index Growth III 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.

F15 · 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.

F15 · 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. 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: 0000899243-21-019914 · doc4.xml · nonDerivative · entry 17

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

F7 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.05 - $82.50. 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.

F14 · 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: 0000899243-21-019914 · doc4.xml · nonDerivative · entry 16

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: 2,645

F6 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.00 - $81.98. 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.

F14 · 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: 0000899243-21-019914 · doc4.xml · nonDerivative · entry 15

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: 58,711

F5 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.00 - $80.99. 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.

F14 · 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: 0000899243-21-019914 · doc4.xml · nonDerivative · 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: 101,201

F4 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.50 - $79.99. 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.

F14 · 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: 0000899243-21-019914 · doc4.xml · nonDerivative · 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: 118,774

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 · kind: On May 17, 2021, Yucca (Jersey) SLP ("Yucca") converted in the aggregate 48,709 shares of the Issuer's Class B Common Stock into 48,709 shares of the Issuer's Class A Common Stock.

F13 · price: On May 17, 2021, Yucca (Jersey) SLP ("Yucca") converted in the aggregate 48,709 shares of the Issuer's Class B Common Stock into 48,709 shares of the Issuer's Class A Common Stock.

F14 · 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: 0000899243-21-019914 · doc4.xml · nonDerivative · 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: 0

F8 · kind: On May 17, 2021, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 2,700,313 shares of the Issuer's Class B Common Stock into 2,700,313 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 2,700,313 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 675,078 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.

F10 · kind: On May 17, 2021, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 54,506 shares of the Issuer's Class B Common Stock into 54,506 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 54,506 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 13,627 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.

F8 · price: On May 17, 2021, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 2,700,313 shares of the Issuer's Class B Common Stock into 2,700,313 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 2,700,313 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 675,078 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.

F10 · price: On May 17, 2021, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 54,506 shares of the Issuer's Class B Common Stock into 54,506 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 54,506 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 13,627 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 · ownership.direct: The shares are held by IVA VI.

SEC source: 0000899243-21-019914 · doc4.xml · nonDerivative · 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: 0

F10 · kind: On May 17, 2021, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 54,506 shares of the Issuer's Class B Common Stock into 54,506 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 54,506 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 13,627 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.

F10 · price: On May 17, 2021, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 54,506 shares of the Issuer's Class B Common Stock into 54,506 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 54,506 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 13,627 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.

F11 · 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: 0000899243-21-019914 · 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: 54,506

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.

F10 · kind: On May 17, 2021, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 54,506 shares of the Issuer's Class B Common Stock into 54,506 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 54,506 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 13,627 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.

F10 · price: On May 17, 2021, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 54,506 shares of the Issuer's Class B Common Stock into 54,506 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 54,506 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 13,627 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.

F11 · 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: 0000899243-21-019914 · 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: 0

F8 · kind: On May 17, 2021, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 2,700,313 shares of the Issuer's Class B Common Stock into 2,700,313 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 2,700,313 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 675,078 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.

F8 · price: On May 17, 2021, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 2,700,313 shares of the Issuer's Class B Common Stock into 2,700,313 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 2,700,313 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 675,078 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.

F9 · 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: 0000899243-21-019914 · 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: 2,700,313

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.

F8 · kind: On May 17, 2021, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 2,700,313 shares of the Issuer's Class B Common Stock into 2,700,313 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 2,700,313 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 675,078 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.

F8 · price: On May 17, 2021, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 2,700,313 shares of the Issuer's Class B Common Stock into 2,700,313 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 2,700,313 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 675,078 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.

F9 · 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: 0000899243-21-019914 · 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: 0

F7 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.05 - $82.50. 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.

F3 · ownership.direct: The shares are held by IVGA III.

SEC source: 0000899243-21-019914 · 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: 65

F6 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.00 - $81.98. 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.

F3 · ownership.direct: The shares are held by IVGA III.

SEC source: 0000899243-21-019914 · 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: 1,438

F5 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.00 - $80.99. 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.

F3 · ownership.direct: The shares are held by IVGA III.

SEC source: 0000899243-21-019914 · 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: 2,478

F4 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.50 - $79.99. 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.

F3 · ownership.direct: The shares are held by IVGA III.

SEC source: 0000899243-21-019914 · 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: 2,908

F1 · kind: On May 17, 2021, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 908,774 shares of the Issuer's Class B Common Stock into 908,774 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 908,774 shares of Class A Common Stock pro-rata to its limited partners and its general partner, Index Venture Growth Associates III Limited ("IVGA III"), 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, IVGA III distributed in-kind, without consideration, 224,285 shares of Class A Common Stock received in the Index Growth III 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.

F1 · price: On May 17, 2021, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 908,774 shares of the Issuer's Class B Common Stock into 908,774 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 908,774 shares of Class A Common Stock pro-rata to its limited partners and its general partner, Index Venture Growth Associates III Limited ("IVGA III"), 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, IVGA III distributed in-kind, without consideration, 224,285 shares of Class A Common Stock received in the Index Growth III 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 · ownership.direct: The shares are held by IVGA III.

SEC source: 0000899243-21-019914 · 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 May 17, 2021, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 908,774 shares of the Issuer's Class B Common Stock into 908,774 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 908,774 shares of Class A Common Stock pro-rata to its limited partners and its general partner, Index Venture Growth Associates III Limited ("IVGA III"), 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, IVGA III distributed in-kind, without consideration, 224,285 shares of Class A Common Stock received in the Index Growth III 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.

F1 · price: On May 17, 2021, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 908,774 shares of the Issuer's Class B Common Stock into 908,774 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 908,774 shares of Class A Common Stock pro-rata to its limited partners and its general partner, Index Venture Growth Associates III Limited ("IVGA III"), 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, IVGA III distributed in-kind, without consideration, 224,285 shares of Class A Common Stock received in the Index Growth III 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.

F2 · ownership.direct: The shares are held by Index Growth III. 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: 0000899243-21-019914 · 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: 908,774

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

F1 · kind: On May 17, 2021, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 908,774 shares of the Issuer's Class B Common Stock into 908,774 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 908,774 shares of Class A Common Stock pro-rata to its limited partners and its general partner, Index Venture Growth Associates III Limited ("IVGA III"), 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, IVGA III distributed in-kind, without consideration, 224,285 shares of Class A Common Stock received in the Index Growth III 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.

F1 · price: On May 17, 2021, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 908,774 shares of the Issuer's Class B Common Stock into 908,774 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 908,774 shares of Class A Common Stock pro-rata to its limited partners and its general partner, Index Venture Growth Associates III Limited ("IVGA III"), 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, IVGA III distributed in-kind, without consideration, 224,285 shares of Class A Common Stock received in the Index Growth III 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.

F2 · ownership.direct: The shares are held by Index Growth III. 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: 0000899243-21-019918 · doc4.xml · derivative · entry 22

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 243,542

Underlying: Class A Common Stock · 48,709 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.

F16 · 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.

F13 · kind: On May 17, 2021, Yucca (Jersey) SLP ("Yucca") converted in the aggregate 48,709 shares of the Issuer's Class B Common Stock into 48,709 shares of the Issuer's Class A Common Stock.

F16 · 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.

F16 · 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.

F14 · 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: 0000899243-21-019918 · doc4.xml · derivative · entry 21

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 272,532

Underlying: Class A Common Stock · 54,506 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.

F16 · 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.

F10 · kind: On May 17, 2021, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 54,506 shares of the Issuer's Class B Common Stock into 54,506 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 54,506 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 13,627 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.

F16 · 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.

F16 · 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.

F11 · 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: 0000899243-21-019918 · doc4.xml · derivative · entry 20

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 13,501,566

Underlying: Class A Common Stock · 2,700,313 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.

F16 · 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.

F8 · kind: On May 17, 2021, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 2,700,313 shares of the Issuer's Class B Common Stock into 2,700,313 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 2,700,313 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 675,078 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.

F16 · 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.

F16 · 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.

F9 · 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: 0000899243-21-019918 · doc4.xml · derivative · entry 19

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 4,543,868

Underlying: Class A Common Stock · 908,774 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.

F16 · 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 May 17, 2021, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 908,774 shares of the Issuer's Class B Common Stock into 908,774 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 908,774 shares of Class A Common Stock pro-rata to its limited partners and its general partner, Index Venture Growth Associates III Limited ("IVGA III"), 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, IVGA III distributed in-kind, without consideration, 224,285 shares of Class A Common Stock received in the Index Growth III 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.

F16 · 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.

F16 · 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. 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: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 17

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F7 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.05 - $82.50. 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.

F14 · 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: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 16

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,645

F6 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.00 - $81.98. 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.

F14 · 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: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 15

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 58,711

F5 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.00 - $80.99. 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.

F14 · 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: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 14

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 101,201

F4 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.50 - $79.99. 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.

F14 · 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: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 13

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 118,774

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 · kind: On May 17, 2021, Yucca (Jersey) SLP ("Yucca") converted in the aggregate 48,709 shares of the Issuer's Class B Common Stock into 48,709 shares of the Issuer's Class A Common Stock.

F13 · price: On May 17, 2021, Yucca (Jersey) SLP ("Yucca") converted in the aggregate 48,709 shares of the Issuer's Class B Common Stock into 48,709 shares of the Issuer's Class A Common Stock.

F14 · 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: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 12

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F8 · kind: On May 17, 2021, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 2,700,313 shares of the Issuer's Class B Common Stock into 2,700,313 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 2,700,313 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 675,078 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.

F10 · kind: On May 17, 2021, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 54,506 shares of the Issuer's Class B Common Stock into 54,506 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 54,506 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 13,627 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.

F8 · price: On May 17, 2021, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 2,700,313 shares of the Issuer's Class B Common Stock into 2,700,313 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 2,700,313 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 675,078 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.

F10 · price: On May 17, 2021, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 54,506 shares of the Issuer's Class B Common Stock into 54,506 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 54,506 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 13,627 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 · ownership.nature: The shares are held by IVA VI.

SEC source: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 11

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F10 · kind: On May 17, 2021, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 54,506 shares of the Issuer's Class B Common Stock into 54,506 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 54,506 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 13,627 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.

F10 · price: On May 17, 2021, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 54,506 shares of the Issuer's Class B Common Stock into 54,506 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 54,506 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 13,627 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.

F11 · 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: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 10

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 54,506

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.

F10 · kind: On May 17, 2021, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 54,506 shares of the Issuer's Class B Common Stock into 54,506 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 54,506 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 13,627 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.

F10 · price: On May 17, 2021, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 54,506 shares of the Issuer's Class B Common Stock into 54,506 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 54,506 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 13,627 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.

F11 · 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: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 9

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F8 · kind: On May 17, 2021, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 2,700,313 shares of the Issuer's Class B Common Stock into 2,700,313 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 2,700,313 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 675,078 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.

F8 · price: On May 17, 2021, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 2,700,313 shares of the Issuer's Class B Common Stock into 2,700,313 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 2,700,313 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 675,078 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.

F9 · 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: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 8

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,700,313

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.

F8 · kind: On May 17, 2021, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 2,700,313 shares of the Issuer's Class B Common Stock into 2,700,313 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 2,700,313 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 675,078 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.

F8 · price: On May 17, 2021, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 2,700,313 shares of the Issuer's Class B Common Stock into 2,700,313 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 2,700,313 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 675,078 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.

F9 · 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: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 7

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F7 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.05 - $82.50. 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.

F3 · ownership.nature: The shares are held by IVGA III. 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: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 6

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 65

F6 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.00 - $81.98. 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.

F3 · ownership.nature: The shares are held by IVGA III. 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: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 5

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,438

F5 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.00 - $80.99. 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.

F3 · ownership.nature: The shares are held by IVGA III. 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: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 4

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,478

F4 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.50 - $79.99. 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.

F3 · ownership.nature: The shares are held by IVGA III. 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: 0000899243-21-019918 · doc4.xml · nonDerivative · entry 3

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,908

F1 · kind: On May 17, 2021, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 908,774 shares of the Issuer's Class B Common Stock into 908,774 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 908,774 shares of Class A Common Stock pro-rata to its limited partners and its general partner, Index Venture Growth Associates III Limited ("IVGA III"), 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, IVGA III distributed in-kind, without consideration, 224,285 shares of Class A Common Stock received in the Index Growth III 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.

F1 · price: On May 17, 2021, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 908,774 shares of the Issuer's Class B Common Stock into 908,774 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 908,774 shares of Class A Common Stock pro-rata to its limited partners and its general partner, Index Venture Growth Associates III Limited ("IVGA III"), 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, IVGA III distributed in-kind, without consideration, 224,285 shares of Class A Common Stock received in the Index Growth III 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 · ownership.nature: The shares are held by IVGA III. 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.