GANDHI SAMEER K

SEC source: 0000950103-20-011902 · dp130493_4-gandhi.xml · derivative · entry 17

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund Investors 2013 L.L.C.

Disclosed balance after: 705,384

Underlying: Class A common stock · 218,400 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.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F4 · ownership.nature: These shares are held by Accel Growth Fund Investors 2013 L.L.C. The Reporting Person is one of six Managing Members of Accel Growth Fund Investors 2013 L.L.C. who share voting and dispositive powers over such shares. Each of such Managing Members and the Reporting Person disclaims beneficial ownership over the securities herein except to the extent of their pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Managing Member or the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-011902 · dp130493_4-gandhi.xml · derivative · entry 16

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II Strategic Partners L.P.

Disclosed balance after: 475,941

Underlying: Class A common stock · 147,360 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.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F3 · ownership.nature: These shares are held by Accel Growth Fund II Strategic Partners L.P.

SEC source: 0000950103-20-011902 · dp130493_4-gandhi.xml · derivative · entry 15

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II L.P.

Disclosed balance after: 6,570,136

Underlying: Class A common stock · 2,034,240 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.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F2 · ownership.nature: These shares are held by Accel Growth Fund II L.P. Accel Growth Fund II Associates L.L.C. ("Accel Growth Fund II GP") is the general partner of each of Accel Growth Fund II L.P. and Accel Growth Fund II Strategic Partners L.P. (together, the "Accel Growth Fund II Entities"). Accel Growth Fund II GP has sole voting and dispositive power with regard to the shares held by the Accel Growth Fund II Entities. The Reporting Person is one of six Managing Members of Accel Growth Fund II GP, who share voting and dispositive powers over the shares held by the Accel Growth Fund II Entities. Continued in footnote (19) below.

SEC source: 0000950103-20-011902 · dp130493_4-gandhi.xml · nonDerivative · entry 12

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · The Potomac Trust, dated 9/21/2001

Disclosed balance after: 43,482

F16 · kind: Reflects shares distributed in the distributions reported herein, in each case to the limited partners or members of the applicable entity for no consideration, representing each limited partner's or member's pro-rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F17 · ownership.nature: These shares are held by The Potomac Trust, dated 9/21/2001. The Reporting Person disclaims Section 16 beneficial ownership over the securities reported herein 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: 0000950103-20-011902 · dp130493_4-gandhi.xml · nonDerivative · entry 11

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Potomac Investments L.P. - Fund 1

Disclosed balance after: 537,416

F14 · kind: Reflects shares distributed in the distributions reported herein, in each case to the limited partners or members of the applicable entity for no consideration, representing each limited partner's or member's pro-rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F15 · ownership.nature: These shares are held by Potomac Investments L.P. - Fund 1. The Reporting Person disclaims Section 16 beneficial ownership over the securities reported herein 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: 0000950103-20-011902 · dp130493_4-gandhi.xml · nonDerivative · entry 10

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel London Investors 2012 L.P.

Disclosed balance after: 0

F13 · kind: On June 15, 2020, Accel London Investors 2012 L.P. distributed, for no consideration, 13,320 shares of Class A common stock of the Issuer (the "Accel London Investors Shares") to its limited partners and to Accel London III Associates L.L.C., the general partner of Accel London Investors 2012 L.P., representing each such partner's pro rata interest in such Accel London Investors Shares. On that same date, Accel London III Associates L.L.C. distributed, for no consideration, the Accel London Investors Shares it received in the distribution by Accel London Investors 2012 L.P. to its members, representing each such member's pro rata interest in such Accel London Investors Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F8 · ownership.nature: These shares are held by Accel London Investors 2012 L.P. The Reporting Person disclaims Section 16 beneficial ownership over the securities reported herein 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: 0000950103-20-011902 · dp130493_4-gandhi.xml · nonDerivative · entry 9

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel London III L.P.

Disclosed balance after: 0

F12 · kind: On June 15, 2020, Accel London III L.P. distributed, for no consideration, 586,680 shares of Class A common stock of the Issuer (the "Accel London III Shares") to its limited partners and to Accel London III Associates L.P., the general partner of Accel London III L.P., representing each such partner's pro rata interest in such Accel London III Shares. On the same date, Accel London III Associates L.P. distributed, for no consideration, the Accel London III Shares it received in the distribution by Accel London III L.P. to its limited partners and to Accel London III Associates L.L.C., the general partner of Accel London III Associates L.P., representing each such partner's pro rata interest in such Accel London III Shares. Continued in footnote (21) below.

F21 · kind: Continued from footnote (12): Also on that same date, Accel London III Associates L.L.C. distributed, for no consideration, the Accel London III Shares it received in the distribution by Accel London III Associates L.P. to its members, representing each such member's pro rata interest in such Accel London III Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F7 · ownership.nature: These shares are held by Accel London III L.P. Accel London III Associates L.P. is the general partner of Accel London III L.P. and has sole voting and dispositive power with regard to the shares held by Accel London III L. P. Accel London III Associates L.L.C. is the general partner of Accel London III Associates L.P. and Accel London Investors 2012 L.P (together with Accel London III L.P., the "Accel London III Fund Entities"). Accel London III Associates L.L.C. has sole voting and dispositive power with regard to the shares held by the Accel London III Fund Entities. Continued in footnote (20) below.

SEC source: 0000950103-20-011902 · dp130493_4-gandhi.xml · nonDerivative · entry 8

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund Investors 2013 L.L.C.

Disclosed balance after: 0

F11 · kind: On June 15, 2020, Accel Growth Fund Investors 2013 L.L.C. distributed, for no consideration, 218,400 shares of Class A common stock of the Issuer to its members, representing each such member's pro rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F4 · ownership.nature: These shares are held by Accel Growth Fund Investors 2013 L.L.C. The Reporting Person is one of six Managing Members of Accel Growth Fund Investors 2013 L.L.C. who share voting and dispositive powers over such shares. Each of such Managing Members and the Reporting Person disclaims beneficial ownership over the securities herein except to the extent of their pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Managing Member or the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-011902 · dp130493_4-gandhi.xml · nonDerivative · entry 7

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II Strategic Partners L.P.

Disclosed balance after: 0

F10 · kind: On June 15, 2020, Accel Growth Fund II Strategic Partners L.P. distributed, for no consideration, 147,360 shares of Class A common stock of the Issuer (the "Accel Growth II SP Shares") to its limited partners and to Accel Growth Fund II Associates L.L.C., the general partner of Accel Growth Fund II Strategic Partners L.P., representing each such partner's pro rata interest in such Accel Growth II SP Shares. On the same date, Accel Growth Fund II Associates L.L.C. distributed, for no consideration, the Accel Growth II SP Shares it received in the distribution by Accel Growth Fund II Strategic Partners L.P. to its members, representing each such member's pro rata interest in such Accel Growth II SP Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F3 · ownership.nature: These shares are held by Accel Growth Fund II Strategic Partners L.P.

SEC source: 0000950103-20-011902 · dp130493_4-gandhi.xml · nonDerivative · entry 6

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II L.P.

Disclosed balance after: 0

F9 · kind: On June 15, 2020, Accel Growth Fund II L.P. distributed, for no consideration, 2,034,240 shares of Class A common stock of the Issuer (the "Accel Growth II Shares") to its limited partners and to Accel Growth Fund II Associates L.L.C., the general partner of Accel Growth Fund II L.P., representing each such partner's pro rata interest in such Accel Growth II Shares. On the same date, Accel Growth Fund II Associates L.L.C. distributed, for no consideration, the Accel Growth II Shares it received in the distribution by Accel Growth Fund II L.P. to its members, representing each such member's pro rata interest in such Accel Growth II Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F2 · ownership.nature: These shares are held by Accel Growth Fund II L.P. Accel Growth Fund II Associates L.L.C. ("Accel Growth Fund II GP") is the general partner of each of Accel Growth Fund II L.P. and Accel Growth Fund II Strategic Partners L.P. (together, the "Accel Growth Fund II Entities"). Accel Growth Fund II GP has sole voting and dispositive power with regard to the shares held by the Accel Growth Fund II Entities. The Reporting Person is one of six Managing Members of Accel Growth Fund II GP, who share voting and dispositive powers over the shares held by the Accel Growth Fund II Entities. Continued in footnote (19) below.

SEC source: 0000950103-20-011902 · dp130493_4-gandhi.xml · nonDerivative · entry 5

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel London Investors 2012 L.P.

Disclosed balance after: 13,320

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 · price: Class B common stock convert into Class A common stock on a one-for-one basis.

F8 · ownership.nature: These shares are held by Accel London Investors 2012 L.P. The Reporting Person disclaims Section 16 beneficial ownership over the securities reported herein 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: 0000950103-20-011902 · dp130493_4-gandhi.xml · nonDerivative · entry 4

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel London III L.P.

Disclosed balance after: 586,680

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 · price: Class B common stock convert into Class A common stock on a one-for-one basis.

F7 · ownership.nature: These shares are held by Accel London III L.P. Accel London III Associates L.P. is the general partner of Accel London III L.P. and has sole voting and dispositive power with regard to the shares held by Accel London III L. P. Accel London III Associates L.L.C. is the general partner of Accel London III Associates L.P. and Accel London Investors 2012 L.P (together with Accel London III L.P., the "Accel London III Fund Entities"). Accel London III Associates L.L.C. has sole voting and dispositive power with regard to the shares held by the Accel London III Fund Entities. Continued in footnote (20) below.

F20 · ownership.nature: Continued from footnote (7): Each of the Reporting Person, Accel London III Associates L.P. and Accel London III Associates L.L.C. disclaims Section 16 beneficial ownership over the securities reported herein except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that either the Reporting Person, Accel London III Associates L.P. or Accel London III Associates L.L.C. is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-011902 · dp130493_4-gandhi.xml · nonDerivative · entry 3

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund Investors 2013 L.L.C.

Disclosed balance after: 218,400

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 · price: Class B common stock convert into Class A common stock on a one-for-one basis.

F4 · ownership.nature: These shares are held by Accel Growth Fund Investors 2013 L.L.C. The Reporting Person is one of six Managing Members of Accel Growth Fund Investors 2013 L.L.C. who share voting and dispositive powers over such shares. Each of such Managing Members and the Reporting Person disclaims beneficial ownership over the securities herein except to the extent of their pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Managing Member or the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-011902 · dp130493_4-gandhi.xml · nonDerivative · entry 2

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II Strategic Partners L.P.

Disclosed balance after: 147,360

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 · price: Class B common stock convert into Class A common stock on a one-for-one basis.

F3 · ownership.nature: These shares are held by Accel Growth Fund II Strategic Partners L.P.

SEC source: 0000950103-20-011902 · dp130493_4-gandhi.xml · nonDerivative · entry 1

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II L.P.

Disclosed balance after: 2,034,240

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 · price: Class B common stock convert into Class A common stock on a one-for-one basis.

F2 · ownership.nature: These shares are held by Accel Growth Fund II L.P. Accel Growth Fund II Associates L.L.C. ("Accel Growth Fund II GP") is the general partner of each of Accel Growth Fund II L.P. and Accel Growth Fund II Strategic Partners L.P. (together, the "Accel Growth Fund II Entities"). Accel Growth Fund II GP has sole voting and dispositive power with regard to the shares held by the Accel Growth Fund II Entities. The Reporting Person is one of six Managing Members of Accel Growth Fund II GP, who share voting and dispositive powers over the shares held by the Accel Growth Fund II Entities. Continued in footnote (19) below.

F19 · ownership.nature: Continued from footnote (2): Each of such Managing Members, the Reporting Person and Accel Growth Fund II GP disclaims Section 16 beneficial ownership over the securities reported herein except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Managing Member, the Reporting Person or Accel Growth Fund II GP is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-011224 · dp129842_4-gandhi.xml · derivative · entry 19

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel London Investors 2012 L.P.

Disclosed balance after: 57,808

Underlying: Class A common stock · 17,760 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.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F8 · ownership.nature: These shares are held by Accel London Investors 2012 L.P. The Reporting Person disclaims Section 16 beneficial ownership over the securities reported herein 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: 0000950103-20-011224 · dp129842_4-gandhi.xml · derivative · entry 18

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel London III L.P.

Disclosed balance after: 2,546,145

Underlying: Class A common stock · 782,240 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.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F7 · ownership.nature: These shares are held by Accel London III L.P. Accel London III Associates L.P. is the general partner of Accel London III L.P. and has sole voting and dispositive power with regard to the shares held by Accel London III L. P. Accel London III Associates L.L.C. is the general partner of Accel London III Associates L.P. and Accel London Investors 2012 L.P (together with Accel London III L.P., the "Accel London III Fund Entities"). Accel London III Associates L.L.C. has sole voting and dispositive power with regard to the shares held by the Accel London III Fund Entities. Continued in footnote (20) below.

SEC source: 0000950103-20-011224 · dp129842_4-gandhi.xml · derivative · entry 17

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund Investors 2013 L.L.C.

Disclosed balance after: 923,784

Underlying: Class A common stock · 291,200 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.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F4 · ownership.nature: These shares are held by Accel Growth Fund Investors 2013 L.L.C. The Reporting Person is one of six Managing Members of Accel Growth Fund Investors 2013 L.L.C. who share voting and dispositive powers over such shares. Each of such Managing Members and the Reporting Person disclaims beneficial ownership over the securities herein except to the extent of their pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Managing Member or the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-011224 · dp129842_4-gandhi.xml · derivative · entry 16

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II Strategic Partners L.P.

Disclosed balance after: 623,301

Underlying: Class A common stock · 196,480 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.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F3 · ownership.nature: These shares are held by Accel Growth Fund II Strategic Partners L.P.

SEC source: 0000950103-20-011224 · dp129842_4-gandhi.xml · derivative · entry 15

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II L.P.

Disclosed balance after: 8,604,376

Underlying: Class A common stock · 2,712,320 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.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F18 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F2 · ownership.nature: These shares are held by Accel Growth Fund II L.P. Accel Growth Fund II Associates L.L.C. ("Accel Growth Fund II GP") is the general partner of each of Accel Growth Fund II L.P. and Accel Growth Fund II Strategic Partners L.P. (together, the "Accel Growth Fund II Entities"). Accel Growth Fund II GP has sole voting and dispositive power with regard to the shares held by the Accel Growth Fund II Entities. The Reporting Person is one of six Managing Members of Accel Growth Fund II GP, who share voting and dispositive powers over the shares held by the Accel Growth Fund II Entities. Continued in footnote (19) below.

SEC source: 0000950103-20-011224 · dp129842_4-gandhi.xml · nonDerivative · entry 12

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · The Potomac Trust, dated 9/21/2001

Disclosed balance after: 36,350

F16 · kind: Reflects shares distributed in the distributions reported herein, in each case to the limited partners or members of the applicable entity for no consideration, representing each limited partner's or member's pro-rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F17 · ownership.nature: These shares are held by The Potomac Trust, dated 9/21/2001. The Reporting Person disclaims Section 16 beneficial ownership over the securities reported herein 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: 0000950103-20-011224 · dp129842_4-gandhi.xml · nonDerivative · entry 11

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Potomac Investments L.P. - Fund 1

Disclosed balance after: 453,067

F14 · kind: Reflects shares distributed in the distributions reported herein, in each case to the limited partners or members of the applicable entity for no consideration, representing each limited partner's or member's pro-rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F15 · ownership.nature: These shares are held by Potomac Investments L.P. - Fund 1. The Reporting Person disclaims Section 16 beneficial ownership over the securities reported herein 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: 0000950103-20-011224 · dp129842_4-gandhi.xml · nonDerivative · entry 10

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel London Investors 2012 L.P.

Disclosed balance after: 0

F13 · kind: On June 3, 2020, Accel London Investors 2012 L.P. distributed, for no consideration, 17,760 shares of Class A common stock of the Issuer (the "Accel London Investors Shares") to its limited partners and to Accel London III Associates L.L.C., the general partner of Accel London Investors 2012 L.P., representing each such partner's pro rata interest in such Accel London Investors Shares. On that same date, Accel London III Associates L.L.C. distributed, for no consideration, the Accel London Investors Shares it received in the distribution by Accel London Investors 2012 L.P. to its members, representing each such member's pro rata interest in such Accel London Investors Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F8 · ownership.nature: These shares are held by Accel London Investors 2012 L.P. The Reporting Person disclaims Section 16 beneficial ownership over the securities reported herein 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: 0000950103-20-011224 · dp129842_4-gandhi.xml · nonDerivative · entry 9

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel London III L.P.

Disclosed balance after: 0

F12 · kind: On June 3, 2020, Accel London III L.P. distributed, for no consideration, 782,240 shares of Class A common stock of the Issuer (the "Accel London III Shares") to its limited partners and to Accel London III Associates L.P., the general partner of Accel London III L.P., representing each such partner's pro rata interest in such Accel London III Shares. On the same date, Accel London III Associates L.P. distributed, for no consideration, the Accel London III Shares it received in the distribution by Accel London III L.P. to its limited partners and to Accel London III Associates L.L.C., the general partner of Accel London III Associates L.P., representing each such partner's pro rata interest in such Accel London III Shares. Continued in footnote (21) below.

F21 · kind: Continued from footnote (12): Also on that same date, Accel London III Associates L.L.C. distributed, for no consideration, the Accel London III Shares it received in the distribution by Accel London III Associates L.P. to its members, representing each such member's pro rata interest in such Accel London III Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F7 · ownership.nature: These shares are held by Accel London III L.P. Accel London III Associates L.P. is the general partner of Accel London III L.P. and has sole voting and dispositive power with regard to the shares held by Accel London III L. P. Accel London III Associates L.L.C. is the general partner of Accel London III Associates L.P. and Accel London Investors 2012 L.P (together with Accel London III L.P., the "Accel London III Fund Entities"). Accel London III Associates L.L.C. has sole voting and dispositive power with regard to the shares held by the Accel London III Fund Entities. Continued in footnote (20) below.

SEC source: 0000950103-20-011224 · dp129842_4-gandhi.xml · nonDerivative · entry 8

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund Investors 2013 L.L.C.

Disclosed balance after: 0

F11 · kind: On June 3, 2020, Accel Growth Fund Investors 2013 L.L.C. distributed, for no consideration, 291,200 shares of Class A common stock of the Issuer to its members, representing each such member's pro rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F4 · ownership.nature: These shares are held by Accel Growth Fund Investors 2013 L.L.C. The Reporting Person is one of six Managing Members of Accel Growth Fund Investors 2013 L.L.C. who share voting and dispositive powers over such shares. Each of such Managing Members and the Reporting Person disclaims beneficial ownership over the securities herein except to the extent of their pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Managing Member or the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-011224 · dp129842_4-gandhi.xml · nonDerivative · entry 7

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II Strategic Partners L.P.

Disclosed balance after: 0

F10 · kind: On June 3, 2020, Accel Growth Fund II Strategic Partners L.P. distributed, for no consideration, 196,480 shares of Class A common stock of the Issuer (the "Accel Growth II SP Shares") to its limited partners and to Accel Growth Fund II Associates L.L.C., the general partner of Accel Growth Fund II Strategic Partners L.P., representing each such partner's pro rata interest in such Accel Growth II SP Shares. On the same date, Accel Growth Fund II Associates L.L.C. distributed, for no consideration, the Accel Growth II SP Shares it received in the distribution by Accel Growth Fund II Strategic Partners L.P. to its members, representing each such member's pro rata interest in such Accel Growth II SP Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F3 · ownership.nature: These shares are held by Accel Growth Fund II Strategic Partners L.P.

SEC source: 0000950103-20-011224 · dp129842_4-gandhi.xml · nonDerivative · entry 6

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II L.P.

Disclosed balance after: 0

F9 · kind: On June 3, 2020, Accel Growth Fund II L.P. distributed, for no consideration, 2,712,320 shares of Class A common stock of the Issuer (the "Accel Growth II Shares") to its limited partners and to Accel Growth Fund II Associates L.L.C., the general partner of Accel Growth Fund II L.P., representing each such partner's pro rata interest in such Accel Growth II Shares. On the same date, Accel Growth Fund II Associates L.L.C. distributed, for no consideration, the Accel Growth II Shares it received in the distribution by Accel Growth Fund II L.P. to its members, representing each such member's pro rata interest in such Accel Growth II Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F2 · ownership.nature: These shares are held by Accel Growth Fund II L.P. Accel Growth Fund II Associates L.L.C. ("Accel Growth Fund II GP") is the general partner of each of Accel Growth Fund II L.P. and Accel Growth Fund II Strategic Partners L.P. (together, the "Accel Growth Fund II Entities"). Accel Growth Fund II GP has sole voting and dispositive power with regard to the shares held by the Accel Growth Fund II Entities. The Reporting Person is one of six Managing Members of Accel Growth Fund II GP, who share voting and dispositive powers over the shares held by the Accel Growth Fund II Entities. Continued in footnote (19) below.

SEC source: 0000950103-20-011224 · dp129842_4-gandhi.xml · nonDerivative · entry 5

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel London Investors 2012 L.P.

Disclosed balance after: 17,760

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 · price: Class B common stock convert into Class A common stock on a one-for-one basis.

F8 · ownership.nature: These shares are held by Accel London Investors 2012 L.P. The Reporting Person disclaims Section 16 beneficial ownership over the securities reported herein 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: 0000950103-20-011224 · dp129842_4-gandhi.xml · nonDerivative · entry 4

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel London III L.P.

Disclosed balance after: 782,240

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 · price: Class B common stock convert into Class A common stock on a one-for-one basis.

F7 · ownership.nature: These shares are held by Accel London III L.P. Accel London III Associates L.P. is the general partner of Accel London III L.P. and has sole voting and dispositive power with regard to the shares held by Accel London III L. P. Accel London III Associates L.L.C. is the general partner of Accel London III Associates L.P. and Accel London Investors 2012 L.P (together with Accel London III L.P., the "Accel London III Fund Entities"). Accel London III Associates L.L.C. has sole voting and dispositive power with regard to the shares held by the Accel London III Fund Entities. Continued in footnote (20) below.

F20 · ownership.nature: Continued from footnote (7): Each of the Reporting Person, Accel London III Associates L.P. and Accel London III Associates L.L.C. disclaims Section 16 beneficial ownership over the securities reported herein except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that either the Reporting Person, Accel London III Associates L.P. or Accel London III Associates L.L.C. is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-011224 · dp129842_4-gandhi.xml · nonDerivative · entry 3

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund Investors 2013 L.L.C.

Disclosed balance after: 291,200

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 · price: Class B common stock convert into Class A common stock on a one-for-one basis.

F4 · ownership.nature: These shares are held by Accel Growth Fund Investors 2013 L.L.C. The Reporting Person is one of six Managing Members of Accel Growth Fund Investors 2013 L.L.C. who share voting and dispositive powers over such shares. Each of such Managing Members and the Reporting Person disclaims beneficial ownership over the securities herein except to the extent of their pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Managing Member or the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-011224 · dp129842_4-gandhi.xml · nonDerivative · entry 2

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II Strategic Partners L.P.

Disclosed balance after: 196,480

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 · price: Class B common stock convert into Class A common stock on a one-for-one basis.

F3 · ownership.nature: These shares are held by Accel Growth Fund II Strategic Partners L.P.

SEC source: 0000950103-20-011224 · dp129842_4-gandhi.xml · nonDerivative · entry 1

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II L.P.

Disclosed balance after: 2,712,320

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 · price: Class B common stock convert into Class A common stock on a one-for-one basis.

F2 · ownership.nature: These shares are held by Accel Growth Fund II L.P. Accel Growth Fund II Associates L.L.C. ("Accel Growth Fund II GP") is the general partner of each of Accel Growth Fund II L.P. and Accel Growth Fund II Strategic Partners L.P. (together, the "Accel Growth Fund II Entities"). Accel Growth Fund II GP has sole voting and dispositive power with regard to the shares held by the Accel Growth Fund II Entities. The Reporting Person is one of six Managing Members of Accel Growth Fund II GP, who share voting and dispositive powers over the shares held by the Accel Growth Fund II Entities. Continued in footnote (19) below.

F19 · ownership.nature: Continued from footnote (2): Each of such Managing Members, the Reporting Person and Accel Growth Fund II GP disclaims Section 16 beneficial ownership over the securities reported herein except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Managing Member, the Reporting Person or Accel Growth Fund II GP is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-007434 · dp126065_4-gandhi.xml · derivative · entry 13

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund Investors 2013 L.L.C.

Disclosed balance after: 1,214,984

Underlying: Class A common stock · 136,500 shares

Expires not disclosed

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

F14 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F14 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F4 · ownership.nature: These shares are held by Accel Growth Fund Investors 2013 L.L.C. The Reporting Person is one of six Managing Members of Accel Growth Fund Investors 2013 L.L.C. who share voting and dispositive powers over such shares. Each of such Managing Members and the Reporting Person disclaims beneficial ownership over the securities herein except to the extent of their pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Managing Member or the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-007434 · dp126065_4-gandhi.xml · derivative · entry 12

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II Strategic Partners L.P.

Disclosed balance after: 819,781

Underlying: Class A common stock · 92,100 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.

F14 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F14 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F3 · ownership.nature: These shares are held by Accel Growth Fund II Strategic Partners L.P.

SEC source: 0000950103-20-007434 · dp126065_4-gandhi.xml · derivative · entry 11

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II L.P.

Disclosed balance after: 11,316,696

Underlying: Class A common stock · 1,271,400 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.

F14 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F14 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F2 · ownership.nature: These shares are held by Accel Growth Fund II L.P. Accel Growth Fund II Associates L.L.C. ("Accel Growth Fund II GP") is the general partner of each of Accel Growth Fund II L.P. and Accel Growth Fund II Strategic Partners L.P. (together, the "Accel Growth Fund II Entities"). Accel Growth Fund II GP has sole voting and dispositive power with regard to the shares held by the Accel Growth Fund II Entities. The Reporting Person is one of six Managing Members of Accel Growth Fund II GP, who share voting and dispositive powers over the shares held by the Accel Growth Fund II Entities. Continued in footnote (17) below.

SEC source: 0000950103-20-007434 · dp126065_4-gandhi.xml · nonDerivative · entry 8

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · The Potomac Trust, dated 9/21/2001

Disclosed balance after: 29,615

F11 · kind: Reflects shares distributed in the distributions reported herein, in each case to the limited partners or members of the applicable entity for no consideration, representing each limited partner's or member's pro-rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F6 · ownership.nature: These shares are held by The Potomac Trust, dated 9/21/2001. The Reporting Person disclaims Section 16 beneficial ownership over the securities reported herein 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: 0000950103-20-007434 · dp126065_4-gandhi.xml · nonDerivative · entry 7

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Potomac Investments L.P. - Fund 1

Disclosed balance after: 337,568

F10 · kind: Reflects shares distributed in the distributions reported herein, in each case to the limited partners or members of the applicable entity for no consideration, representing each limited partner's or member's pro-rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F5 · ownership.nature: These shares are held by Potomac Investments L.P. - Fund 1. The Reporting Person disclaims Section 16 beneficial ownership over the securities reported herein 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: 0000950103-20-007434 · dp126065_4-gandhi.xml · nonDerivative · entry 6

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund Investors 2013 L.L.C.

Disclosed balance after: 0

F9 · kind: On April 9, 2020, Accel Growth Fund Investors 2013 L.L.C. distributed, for no consideration, 136,500 shares of Class A common stock of the Issuer to its members, representing each such member's pro rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F4 · ownership.nature: These shares are held by Accel Growth Fund Investors 2013 L.L.C. The Reporting Person is one of six Managing Members of Accel Growth Fund Investors 2013 L.L.C. who share voting and dispositive powers over such shares. Each of such Managing Members and the Reporting Person disclaims beneficial ownership over the securities herein except to the extent of their pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Managing Member or the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-007434 · dp126065_4-gandhi.xml · nonDerivative · entry 5

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II Strategic Partners L.P.

Disclosed balance after: 0

F8 · kind: On April 9, 2020, Accel Growth Fund II Strategic Partners L.P. distributed, for no consideration, 92,100 shares of Class A common stock of the Issuer (the "Accel Growth II SP Shares") to its limited partners and to Accel Growth Fund II Associates L.L.C., the general partner of Accel Growth Fund II Strategic Partners L.P., representing each such partner's pro rata interest in such Accel Growth II SP Shares. On the same date, Accel Growth Fund II Associates L.L.C. distributed, for no consideration, the Accel Growth II SP Shares it received in the distribution by Accel Growth Fund II Strategic Partners L.P. to its members, representing each such member's pro rata interest in such Accel Growth II SP Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F3 · ownership.nature: These shares are held by Accel Growth Fund II Strategic Partners L.P.

SEC source: 0000950103-20-007434 · dp126065_4-gandhi.xml · nonDerivative · entry 4

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II L.P.

Disclosed balance after: 0

F7 · kind: On April 9, 2020, Accel Growth Fund II L.P. distributed, for no consideration,1,271,400 shares of Class A common stock of the Issuer (the "Accel Growth II Shares") to its limited partners and to Accel Growth Fund II Associates L.L.C., the general partner of Accel Growth Fund II L.P., representing each such partner's pro rata interest in such Accel Growth II Shares. On the same date, Accel Growth Fund II Associates L.L.C. distributed, for no consideration, the Accel Growth II Shares it received in the distribution by Accel Growth Fund II L.P. to its members, representing each such member's pro rata interest in such Accel Growth II Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F2 · ownership.nature: These shares are held by Accel Growth Fund II L.P. Accel Growth Fund II Associates L.L.C. ("Accel Growth Fund II GP") is the general partner of each of Accel Growth Fund II L.P. and Accel Growth Fund II Strategic Partners L.P. (together, the "Accel Growth Fund II Entities"). Accel Growth Fund II GP has sole voting and dispositive power with regard to the shares held by the Accel Growth Fund II Entities. The Reporting Person is one of six Managing Members of Accel Growth Fund II GP, who share voting and dispositive powers over the shares held by the Accel Growth Fund II Entities. Continued in footnote (17) below.

SEC source: 0000950103-20-007434 · dp126065_4-gandhi.xml · nonDerivative · entry 3

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund Investors 2013 L.L.C.

Disclosed balance after: 136,500

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 · price: Class B common stock convert into Class A common stock on a one-for-one basis.

F4 · ownership.nature: These shares are held by Accel Growth Fund Investors 2013 L.L.C. The Reporting Person is one of six Managing Members of Accel Growth Fund Investors 2013 L.L.C. who share voting and dispositive powers over such shares. Each of such Managing Members and the Reporting Person disclaims beneficial ownership over the securities herein except to the extent of their pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Managing Member or the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-007434 · dp126065_4-gandhi.xml · nonDerivative · entry 2

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II Strategic Partners L.P.

Disclosed balance after: 92,100

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 · price: Class B common stock convert into Class A common stock on a one-for-one basis.

F3 · ownership.nature: These shares are held by Accel Growth Fund II Strategic Partners L.P.

SEC source: 0000950103-20-007434 · dp126065_4-gandhi.xml · nonDerivative · entry 1

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II L.P.

Disclosed balance after: 1,271,400

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 · price: Class B common stock convert into Class A common stock on a one-for-one basis.

F2 · ownership.nature: These shares are held by Accel Growth Fund II L.P. Accel Growth Fund II Associates L.L.C. ("Accel Growth Fund II GP") is the general partner of each of Accel Growth Fund II L.P. and Accel Growth Fund II Strategic Partners L.P. (together, the "Accel Growth Fund II Entities"). Accel Growth Fund II GP has sole voting and dispositive power with regard to the shares held by the Accel Growth Fund II Entities. The Reporting Person is one of six Managing Members of Accel Growth Fund II GP, who share voting and dispositive powers over the shares held by the Accel Growth Fund II Entities. Continued in footnote (17) below.

F17 · ownership.nature: Continued from footnote (2): Each of such Managing Members, the Reporting Person and Accel Growth Fund II GP disclaims Section 16 beneficial ownership over the securities reported herein except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Managing Member, the Reporting Person or Accel Growth Fund II GP is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-006544 · dp125159_4-gandhi.xml · derivative · entry 13

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund Investors 2013 L.L.C.

Disclosed balance after: 1,351,484

Underlying: Class A common stock · 136,500 shares

Expires not disclosed

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

F14 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F14 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F4 · ownership.nature: These shares are held by Accel Growth Fund Investors 2013 L.L.C. The Reporting Person is one of six Managing Members of Accel Growth Fund Investors 2013 L.L.C. who share voting and dispositive powers over such shares. Each of such Managing Members and the Reporting Person disclaims beneficial ownership over the securities herein except to the extent of their pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Managing Member or the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-006544 · dp125159_4-gandhi.xml · derivative · entry 12

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II Strategic Partners L.P.

Disclosed balance after: 911,881

Underlying: Class A common stock · 92,100 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.

F14 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F14 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F3 · ownership.nature: These shares are held by Accel Growth Fund II Strategic Partners L.P.

SEC source: 0000950103-20-006544 · dp125159_4-gandhi.xml · derivative · entry 11

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II L.P.

Disclosed balance after: 12,588,096

Underlying: Class A common stock · 1,271,400 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.

F14 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F14 · 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. All shares of Class B common stock will automatically convert into shares of Class A common stock upon the occurrence of certain specified events.

F2 · ownership.nature: These shares are held by Accel Growth Fund II L.P. Accel Growth Fund II Associates L.L.C. ("Accel Growth Fund II GP") is the general partner of each of Accel Growth Fund II L.P. and Accel Growth Fund II Strategic Partners L.P. (together, the "Accel Growth Fund II Entities"). Accel Growth Fund II GP has sole voting and dispositive power with regard to the shares held by the Accel Growth Fund II Entities. The Reporting Person is one of six Managing Members of Accel Growth Fund II GP, who share voting and dispositive powers over the shares held by the Accel Growth Fund II Entities. Continued in footnote (17) below.

SEC source: 0000950103-20-006544 · dp125159_4-gandhi.xml · nonDerivative · entry 8

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · The Potomac Trust, dated 9/21/2001

Disclosed balance after: 28,201

F11 · kind: Reflects shares distributed in the distributions reported herein, in each case to the limited partners or members of the applicable entity for no consideration, representing each limited partner's or member's pro-rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F6 · ownership.nature: These shares are held by The Potomac Trust, dated 9/21/2001. The Reporting Person disclaims Section 16 beneficial ownership over the securities reported herein 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: 0000950103-20-006544 · dp125159_4-gandhi.xml · nonDerivative · entry 7

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Potomac Investments L.P. - Fund 1

Disclosed balance after: 286,717

F10 · kind: Reflects shares distributed in the distributions reported herein, in each case to the limited partners or members of the applicable entity for no consideration, representing each limited partner's or member's pro-rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F5 · ownership.nature: These shares are held by Potomac Investments L.P. - Fund 1. The Reporting Person disclaims Section 16 beneficial ownership over the securities reported herein 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: 0000950103-20-006544 · dp125159_4-gandhi.xml · nonDerivative · entry 6

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund Investors 2013 L.L.C.

Disclosed balance after: 0

F9 · kind: On March 27, 2020, Accel Growth Fund Investors 2013 L.L.C. distributed, for no consideration, 136,500 shares of Class A common stock of the Issuer to its members, representing each such member's pro rata interest in such shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F4 · ownership.nature: These shares are held by Accel Growth Fund Investors 2013 L.L.C. The Reporting Person is one of six Managing Members of Accel Growth Fund Investors 2013 L.L.C. who share voting and dispositive powers over such shares. Each of such Managing Members and the Reporting Person disclaims beneficial ownership over the securities herein except to the extent of their pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Managing Member or the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

SEC source: 0000950103-20-006544 · dp125159_4-gandhi.xml · nonDerivative · entry 5

GANDHI SAMEER K · CIK 0001201326 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Accel Growth Fund II Strategic Partners L.P.

Disclosed balance after: 0

F8 · kind: On March 27, 2020, Accel Growth Fund II Strategic Partners L.P. distributed, for no consideration, 92,100 shares of Class A common stock of the Issuer (the "Accel Growth II SP Shares") to its limited partners and to Accel Growth Fund II Associates L.L.C., the general partner of Accel Growth Fund II Strategic Partners L.P., representing each such partner's pro rata interest in such Accel Growth II SP Shares. On the same date, Accel Growth Fund II Associates L.L.C. distributed, for no consideration, the Accel Growth II SP Shares it received in the distribution by Accel Growth Fund II Strategic Partners L.P. to its members, representing each such member's pro rata interest in such Accel Growth II SP Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F3 · ownership.nature: These shares are held by Accel Growth Fund II Strategic Partners L.P.