DDOG

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 20

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 700

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F21 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $72.17 to $72.21. 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.

F16 · ownership.nature: Shares are held directly by Amit Agarwal 2019 GRAT, of which the Reporting Person is Trustee.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 19

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 900

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F20 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $71.08 to $72.06. 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.

F16 · ownership.nature: Shares are held directly by Amit Agarwal 2019 GRAT, of which the Reporting Person is Trustee.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 18

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 2,627

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F19 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $70.08 to $71.06. 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.

F16 · ownership.nature: Shares are held directly by Amit Agarwal 2019 GRAT, of which the Reporting Person is Trustee.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 17

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 7,790

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F18 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $69.07 to $70.01. 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.

F16 · ownership.nature: Shares are held directly by Amit Agarwal 2019 GRAT, of which the Reporting Person is Trustee.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 16

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 9,150

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F17 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $68.07 to $69.04. 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.

F16 · ownership.nature: Shares are held directly by Amit Agarwal 2019 GRAT, of which the Reporting Person is Trustee.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 15

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT

Disclosed balance after: 10,500

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

F1 · kind: Each share of Class B Common Stock is convertible 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.

F16 · ownership.nature: Shares are held directly by Amit Agarwal 2019 GRAT, of which the Reporting Person is Trustee.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 14

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Spouse

Disclosed balance after: 0

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F15 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $73.20 to $73.33. 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.

F10 · ownership.nature: Shares are held by Reporting Person's spouse.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 13

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Spouse

Disclosed balance after: 500

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F14 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $71.56 to $72.47. 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.

F10 · ownership.nature: Shares are held by Reporting Person's spouse.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 12

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Spouse

Disclosed balance after: 1,185

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F13 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $70.44 to $71.20. 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.

F10 · ownership.nature: Shares are held by Reporting Person's spouse.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 11

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Spouse

Disclosed balance after: 4,699

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F12 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $69.38 to $70.25. 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.

F10 · ownership.nature: Shares are held by Reporting Person's spouse.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 10

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Spouse

Disclosed balance after: 5,799

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F11 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $68.22 to $69.15. 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.

F10 · ownership.nature: Shares are held by Reporting Person's spouse.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 9

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Spouse

Disclosed balance after: 6,999

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.

F10 · ownership.nature: Shares are held by Reporting Person's spouse.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 8

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 142,262

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F9 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $74.15 to $74.30. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 7

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 142,462

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F8 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $73.05 to $73.95. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 6

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 143,862

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F7 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $71.92 to $72.41. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 5

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 144,662

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F6 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $70.88 to $71.71. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 4

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 153,993

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F5 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $69.88 to $70.87. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 3

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 161,279

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F4 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $68.87 to $69.86. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 2

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 164,949

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 13, 2019.

F3 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $67.86 to $68.84. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-032626 · doc4.xml · nonDerivative · entry 1

Agarwal Amit · CIK 0001540517 · Chief Product Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 166,761

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: 0001209191-20-031741 · doc4.xml · nonDerivative · entry 3

OBSTLER DAVID M · CIK 0001120741 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 304,585

F1 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 11, 2019.

F5 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $71.66 to $71.78. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-031741 · doc4.xml · nonDerivative · entry 2

OBSTLER DAVID M · CIK 0001120741 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 304,860

F1 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 11, 2019.

F4 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $70.63 to $71.44. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-031741 · doc4.xml · nonDerivative · entry 1

OBSTLER DAVID M · CIK 0001120741 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 311,242

F1 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 11, 2019.

F2 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $69.63 to $70.62. 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.

F3 · balance_after: Includes 1,073 shares acquired under the Datadog, Inc. 2019 Employee Stock Purchase Plan on May 15, 2020.

SEC source: 0000899243-20-013392 · 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

F10 · price: On May 15, 2020, Yucca sold 32,802 shares of the Issuer's Class A Common Stock. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.00 to $68.60, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

SEC source: 0000899243-20-013392 · 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: 0

F9 · price: On May 15, 2020, Index Growth III sold 100,000 shares of the Issuer's Class A Common Stock. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.00 to $68.60, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

SEC source: 0000899243-20-013390 · doc4.xml · nonDerivative · entry 9

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F10 · price: On May 15, 2020, Yucca sold 32,802 shares of the Issuer's Class A Common Stock. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.00 to $68.60, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

SEC source: 0000899243-20-013390 · doc4.xml · nonDerivative · entry 8

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F9 · price: On May 15, 2020, Index Growth III sold 100,000 shares of the Issuer's Class A Common Stock. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.00 to $68.60, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

SEC source: 0000899243-20-013392 · doc4.xml · derivative · entry 13

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

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

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

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

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

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

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 502,448

Underlying: Class A Common Stock · 32,802 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.

F11 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F7 · kind: On May 14, 2020, Yucca (Jersey) SLP ("Yucca") converted in the aggregate 32,802 shares of the Issuer's Class B Common Stock into 32,802 shares of the Issuer's Class A Common Stock.

F11 · 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.

F11 · 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.

SEC source: 0000899243-20-013392 · doc4.xml · derivative · entry 12

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

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

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

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

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

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

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 562,253

Underlying: Class A Common Stock · 36,706 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.

F11 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F5 · kind: On May 14, 2020, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 36,706 shares of the Issuer's Class B Common Stock into 36,706 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 36,706 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, IVA VI, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 9,176 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 · 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.

F11 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

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

SEC source: 0000899243-20-013392 · doc4.xml · derivative · entry 11

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

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

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

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

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

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

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,854,759

Underlying: Class A Common Stock · 1,818,490 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.

F11 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F3 · kind: On May 14, 2020, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 1,818,490 shares of the Issuer's Class B Common Stock into 1,818,490 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 1,818,490 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 454,622 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.

F11 · 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.

F11 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

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

SEC source: 0000899243-20-013392 · doc4.xml · derivative · 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: 9,374,349

Underlying: Class A Common Stock · 612,002 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.

F11 · 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 14, 2020, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 612,002 shares of the Issuer's Class B Common Stock into 612,002 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 512,002 shares of Class A Common Stock pro-rata to its limited partners, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F11 · 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.

F11 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, and (ii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

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

SEC source: 0000899243-20-013392 · 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: 32,802

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

F7 · kind: On May 14, 2020, Yucca (Jersey) SLP ("Yucca") converted in the aggregate 32,802 shares of the Issuer's Class B Common Stock into 32,802 shares of the Issuer's Class A Common Stock.

F7 · price: On May 14, 2020, Yucca (Jersey) SLP ("Yucca") converted in the aggregate 32,802 shares of the Issuer's Class B Common Stock into 32,802 shares of the Issuer's Class A Common Stock.

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

SEC source: 0000899243-20-013392 · doc4.xml · nonDerivative · entry 6

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

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

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

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

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

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

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F5 · kind: On May 14, 2020, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 36,706 shares of the Issuer's Class B Common Stock into 36,706 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 36,706 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, IVA VI, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 9,176 shares of Class A Common Stock received in the Index VI Parallel distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F5 · price: On May 14, 2020, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 36,706 shares of the Issuer's Class B Common Stock into 36,706 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 36,706 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, IVA VI, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 9,176 shares of Class A Common Stock received in the Index VI Parallel distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

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

SEC source: 0000899243-20-013392 · 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: 36,706

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

F5 · kind: On May 14, 2020, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 36,706 shares of the Issuer's Class B Common Stock into 36,706 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 36,706 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, IVA VI, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 9,176 shares of Class A Common Stock received in the Index VI Parallel distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F5 · price: On May 14, 2020, Index Ventures VI Parallel Entrepreneur Fund (Jersey), L.P. ("Index VI Parallel") converted in the aggregate 36,706 shares of the Issuer's Class B Common Stock into 36,706 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 36,706 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, IVA VI, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 9,176 shares of Class A Common Stock received in the Index VI Parallel distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

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

SEC source: 0000899243-20-013392 · doc4.xml · nonDerivative · entry 4

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

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

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

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

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

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

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1

F3 · kind: On May 14, 2020, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 1,818,490 shares of the Issuer's Class B Common Stock into 1,818,490 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 1,818,490 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 454,622 shares of Class A Common Stock received in the Index VI distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F3 · price: On May 14, 2020, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 1,818,490 shares of the Issuer's Class B Common Stock into 1,818,490 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 1,818,490 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 454,622 shares of Class A Common Stock received in the Index VI distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

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

SEC source: 0000899243-20-013392 · doc4.xml · nonDerivative · entry 3

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

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

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

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

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

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

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,818,491

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

F3 · kind: On May 14, 2020, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 1,818,490 shares of the Issuer's Class B Common Stock into 1,818,490 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 1,818,490 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 454,622 shares of Class A Common Stock received in the Index VI distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F3 · price: On May 14, 2020, Index Ventures VI (Jersey), L.P. ("Index VI") converted in the aggregate 1,818,490 shares of the Issuer's Class B Common Stock into 1,818,490 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 1,818,490 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 454,622 shares of Class A Common Stock received in the Index VI distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

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

SEC source: 0000899243-20-013392 · 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: 100,000

F1 · kind: On May 14, 2020, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 612,002 shares of the Issuer's Class B Common Stock into 612,002 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 512,002 shares of Class A Common Stock pro-rata to its limited partners, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F1 · price: On May 14, 2020, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 612,002 shares of the Issuer's Class B Common Stock into 612,002 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 512,002 shares of Class A Common Stock pro-rata to its limited partners, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

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

SEC source: 0000899243-20-013392 · 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: 612,002

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

F1 · kind: On May 14, 2020, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 612,002 shares of the Issuer's Class B Common Stock into 612,002 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 512,002 shares of Class A Common Stock pro-rata to its limited partners, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

F1 · price: On May 14, 2020, Index Ventures Growth III (Jersey), L.P. ("Index Growth III") converted in the aggregate 612,002 shares of the Issuer's Class B Common Stock into 612,002 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index Growth III distributed in-kind, without consideration, 512,002 shares of Class A Common Stock pro-rata to its limited partners, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

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

SEC source: 0001209191-20-030185 · doc4.xml · derivative · entry 8

Fougere Dan · CIK 0001783373 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 180,000

Underlying: Class A Common Stock · 100,000 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible 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 · 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 · 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 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 · 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 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: 0001209191-20-030185 · doc4.xml · derivative · entry 7

Fougere Dan · CIK 0001783373 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 280,000

Underlying: Class A Common Stock · 100,000 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible 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 · 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 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 · 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 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: 0001209191-20-030185 · doc4.xml · derivative · entry 6

Fougere Dan · CIK 0001783373 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 149,984

Underlying: Class B Common Stock · 100,000 shares

Expires 2027-10-25

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

F7 · derivative.exercise_date: Option vests as to 25% on March 1, 2018 and in equal monthly installments thereafter over three years.

SEC source: 0001209191-20-030185 · doc4.xml · nonDerivative · entry 5

Fougere Dan · CIK 0001783373 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 151,351

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 12, 2019.

F6 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $66.00 to $66.99. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-030185 · doc4.xml · nonDerivative · entry 4

Fougere Dan · CIK 0001783373 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 160,951

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 12, 2019.

F5 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $65.00 to $65.99. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-030185 · doc4.xml · nonDerivative · entry 3

Fougere Dan · CIK 0001783373 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 195,306

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 12, 2019.

F4 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $64.00 to $64.99. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-030185 · doc4.xml · nonDerivative · entry 2

Fougere Dan · CIK 0001783373 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 223,251

F2 · kind: Shares sold pursuant to a 10b5-1 plan entered into on December 12, 2019.

F3 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $63.00 to $63.98. The reporting person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-20-030185 · doc4.xml · nonDerivative · entry 1

Fougere Dan · CIK 0001783373 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 251,351

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: 0001209191-20-030182 · doc4.xml · nonDerivative · entry 1

Ittycheria Dev · CIK 0001397383 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 651,031

F1 · price: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $65.615 to $66.41. 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: 0000899243-20-013390 · doc4.xml · derivative · entry 14

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 502,448

Underlying: Class A Common Stock · 32,802 shares

Expires not disclosed

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

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

F7 · kind: On May 14, 2020, Yucca (Jersey) SLP ("Yucca") converted in the aggregate 32,802 shares of the Issuer's Class B Common Stock into 32,802 shares of the Issuer's Class A Common Stock.

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

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

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

SEC source: 0000899243-20-013390 · doc4.xml · derivative · entry 13

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 562,253

Underlying: Class A Common Stock · 36,706 shares

Expires not disclosed

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

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

F5 · kind: On May 14, 2020, Index VI Parallel converted in the aggregate 36,706 shares of the Issuer's Class B Common Stock into 36,706 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI Parallel distributed in-kind, without consideration, 36,706 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, IVA VI, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. On the same date, IVA VI distributed in-kind, without consideration, the 9,176 shares of Class A Common Stock received in the Index VI Parallel distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

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

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

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

SEC source: 0000899243-20-013390 · doc4.xml · derivative · entry 12

Shah Shardul · CIK 0001783882 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 27,854,759

Underlying: Class A Common Stock · 1,818,490 shares

Expires not disclosed

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

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

F3 · kind: On May 14, 2020, Index VI converted in the aggregate 1,818,490 shares of the Issuer's Class B Common Stock into 1,818,490 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Index VI distributed in-kind, without consideration, 1,818,490 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 454,622 shares of Class A Common Stock received in the Index VI distribution pro-rata to its shareholders, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended.

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

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

F4 · ownership.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.