ZM

SEC source: 0000899243-20-007610 · doc4.xml · nonDerivative · entry 3

Emergence Capital Partners III, L.P. · CIK 0001526541 · 10% owner

Emergence Equity Partners III, L.P. · CIK 0001773803 · 10% owner

EZP Opportunity, L.P. · CIK 0001691097 · 10% owner

EMERGENCE GP PARTNERS, LLC · CIK 0001589115 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By EZP Opportunity, L.P.

Disclosed balance after: 434,400

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.

F4 · kind: On March 5, 2020, EZP Opportunity, L.P. ("EZP") converted in the aggregate 434,400 shares of the Issuer's Class B Common Stock into 434,400 shares of the Issuer's Class A Common Stock. Subsequently on the same date, EZP distributed in-kind, without consideration, all 434,400 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, EEP III, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. The distribution of 108,600 of these shares is being made pursuant to a 10b5-1 plan adopted by EZP on September 27, 2019. Upon receipt by EEP III of its pro rata interest of the distribution (86,880 shares of Class A Common Stock), EEP III distributed in-kind, without consideration, all such shares 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.

F4 · price: On March 5, 2020, EZP Opportunity, L.P. ("EZP") converted in the aggregate 434,400 shares of the Issuer's Class B Common Stock into 434,400 shares of the Issuer's Class A Common Stock. Subsequently on the same date, EZP distributed in-kind, without consideration, all 434,400 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, EEP III, in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. The distribution of 108,600 of these shares is being made pursuant to a 10b5-1 plan adopted by EZP on September 27, 2019. Upon receipt by EEP III of its pro rata interest of the distribution (86,880 shares of Class A Common Stock), EEP III distributed in-kind, without consideration, all such shares 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.

F5 · ownership.nature: Shares held directly by EZP. The sole general partner of EZP is EEP III, and the sole general partner of EEP III is EGP. Each of the Reporting Persons on this filing (other than EZP) disclaims Section 16 beneficial ownership of the shares held by EZP, except to the extent, if any, of its pecuniary interest therein, and this report shall not be deemed an admission that it is the beneficial owner of such shares for Section 16 or any other purpose.

SEC source: 0000899243-20-007610 · doc4.xml · nonDerivative · entry 2

Emergence Capital Partners III, L.P. · CIK 0001526541 · 10% owner

Emergence Equity Partners III, L.P. · CIK 0001773803 · 10% owner

EZP Opportunity, L.P. · CIK 0001691097 · 10% owner

EMERGENCE GP PARTNERS, LLC · CIK 0001589115 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Emergence Capital Partners III, L.P.

Disclosed balance after: 0

F1 · kind: On March 5, 2020, Emergence Capital Partners III, L.P. ("Emergence") converted in the aggregate 3,565,600 shares of the Issuer's Class B Common Stock into 3,565,600 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Emergence distributed in-kind, without consideration, all 3,565,600 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, Emergence Equity Partners III, L.P. ("EEP III"), in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. The distribution of 891,400 of these shares is being made pursuant to a 10b5-1 plan adopted by Emergence on September 27, 2019.

F2 · kind: (continued from footnote 2) Upon receipt by EEP III of its pro rata interest of the distribution (777,391 shares of Class A Common Stock), EEP III distributed in-kind, without consideration, all such shares 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 March 5, 2020, Emergence Capital Partners III, L.P. ("Emergence") converted in the aggregate 3,565,600 shares of the Issuer's Class B Common Stock into 3,565,600 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Emergence distributed in-kind, without consideration, all 3,565,600 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, Emergence Equity Partners III, L.P. ("EEP III"), in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. The distribution of 891,400 of these shares is being made pursuant to a 10b5-1 plan adopted by Emergence on September 27, 2019.

F2 · price: (continued from footnote 2) Upon receipt by EEP III of its pro rata interest of the distribution (777,391 shares of Class A Common Stock), EEP III distributed in-kind, without consideration, all such shares 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.

F3 · ownership.nature: Shares held directly by Emergence. The sole general partner of Emergence is EEP III, and the sole general partner of EEP III is Emergence GP Partners, LLC ("EGP"). Each of the Reporting Persons on this filing (other than Emergence) disclaims Section 16 beneficial ownership of the shares held by Emergence, except to the extent, if any, of its pecuniary interest therein, and this report shall not be deemed an admission that it is the beneficial owner of such shares for Section 16 or any other purpose.

SEC source: 0000899243-20-007610 · doc4.xml · nonDerivative · entry 1

Emergence Capital Partners III, L.P. · CIK 0001526541 · 10% owner

Emergence Equity Partners III, L.P. · CIK 0001773803 · 10% owner

EZP Opportunity, L.P. · CIK 0001691097 · 10% owner

EMERGENCE GP PARTNERS, LLC · CIK 0001589115 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Emergence Capital Partners III, L.P.

Disclosed balance after: 3,565,600

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 March 5, 2020, Emergence Capital Partners III, L.P. ("Emergence") converted in the aggregate 3,565,600 shares of the Issuer's Class B Common Stock into 3,565,600 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Emergence distributed in-kind, without consideration, all 3,565,600 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, Emergence Equity Partners III, L.P. ("EEP III"), in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. The distribution of 891,400 of these shares is being made pursuant to a 10b5-1 plan adopted by Emergence on September 27, 2019.

F2 · kind: (continued from footnote 2) Upon receipt by EEP III of its pro rata interest of the distribution (777,391 shares of Class A Common Stock), EEP III distributed in-kind, without consideration, all such shares 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 March 5, 2020, Emergence Capital Partners III, L.P. ("Emergence") converted in the aggregate 3,565,600 shares of the Issuer's Class B Common Stock into 3,565,600 shares of the Issuer's Class A Common Stock. Subsequently on the same date, Emergence distributed in-kind, without consideration, all 3,565,600 shares of Class A Common Stock pro-rata to its partners, including its limited partners and its general partner, Emergence Equity Partners III, L.P. ("EEP III"), in accordance with the exemption under Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended. The distribution of 891,400 of these shares is being made pursuant to a 10b5-1 plan adopted by Emergence on September 27, 2019.

F2 · price: (continued from footnote 2) Upon receipt by EEP III of its pro rata interest of the distribution (777,391 shares of Class A Common Stock), EEP III distributed in-kind, without consideration, all such shares 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.

F3 · ownership.nature: Shares held directly by Emergence. The sole general partner of Emergence is EEP III, and the sole general partner of EEP III is Emergence GP Partners, LLC ("EGP"). Each of the Reporting Persons on this filing (other than Emergence) disclaims Section 16 beneficial ownership of the shares held by Emergence, except to the extent, if any, of its pecuniary interest therein, and this report shall not be deemed an admission that it is the beneficial owner of such shares for Section 16 or any other purpose.

SEC source: 0000899243-20-007693 · doc4.xml · derivative · entry 29

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund V, LP

Disclosed balance after: 116,722

Underlying: Class A Common Stock · 38,908 shares

Expires not disclosed

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

F6 · derivative.exercise_price: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F4 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SCGF V Management, L.P., which is the general partner of Sequoia Capital U.S. Growth Fund V, LP. As a result, SC US (TTGP), Ltd. and SCGF V Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital U.S. Growth Fund V, LP. Each of SC US (TTGP), Ltd. and SCGF V Management, L.P. disclaims beneficial ownership of the securities held by Sequoia Capital U.S. Growth Fund V, LP. except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007693 · doc4.xml · derivative · entry 27

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth VII Principals Fund, LP

Disclosed balance after: 734,699

Underlying: Class A Common Stock · 244,900 shares

Expires not disclosed

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

F6 · derivative.exercise_price: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F3 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007693 · doc4.xml · derivative · entry 25

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund VII, LP

Disclosed balance after: 11,289,861

Underlying: Class A Common Stock · 3,763,287 shares

Expires not disclosed

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

F6 · derivative.exercise_price: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F3 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007693 · doc4.xml · derivative · entry 23

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth II Principals Fund, L.P.

Disclosed balance after: 48,122

Underlying: Class A Common Stock · 16,041 shares

Expires not disclosed

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

F6 · derivative.exercise_price: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F1 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007693 · doc4.xml · derivative · entry 21

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth Fund II, L.P.

Disclosed balance after: 3,882,278

Underlying: Class A Common Stock · 1,294,093 shares

Expires not disclosed

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

F6 · derivative.exercise_price: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F1 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007693 · doc4.xml · nonDerivative · entry 19

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund V, LP

Disclosed balance after: 0

F5 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F4 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SCGF V Management, L.P., which is the general partner of Sequoia Capital U.S. Growth Fund V, LP. As a result, SC US (TTGP), Ltd. and SCGF V Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital U.S. Growth Fund V, LP. Each of SC US (TTGP), Ltd. and SCGF V Management, L.P. disclaims beneficial ownership of the securities held by Sequoia Capital U.S. Growth Fund V, LP. except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007693 · doc4.xml · nonDerivative · entry 17

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth VII Principals Fund, LP

Disclosed balance after: 0

F5 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F3 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007693 · doc4.xml · nonDerivative · entry 15

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund VII, LP

Disclosed balance after: 0

F5 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F3 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007693 · doc4.xml · nonDerivative · entry 13

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth II Principals Fund, L.P.

Disclosed balance after: 0

F5 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F1 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007693 · doc4.xml · nonDerivative · entry 11

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth Fund II, L.P.

Disclosed balance after: 0

F5 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F1 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007693 · doc4.xml · nonDerivative · entry 9

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund V, LP

Disclosed balance after: 38,908

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

F4 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SCGF V Management, L.P., which is the general partner of Sequoia Capital U.S. Growth Fund V, LP. As a result, SC US (TTGP), Ltd. and SCGF V Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital U.S. Growth Fund V, LP. Each of SC US (TTGP), Ltd. and SCGF V Management, L.P. disclaims beneficial ownership of the securities held by Sequoia Capital U.S. Growth Fund V, LP. except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007693 · doc4.xml · nonDerivative · entry 7

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth VII Principals Fund, LP

Disclosed balance after: 244,900

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 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007693 · doc4.xml · nonDerivative · entry 5

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund VII, LP

Disclosed balance after: 3,763,287

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 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007693 · doc4.xml · nonDerivative · entry 3

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth II Principals Fund, L.P.

Disclosed balance after: 16,041

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 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007693 · doc4.xml · nonDerivative · entry 1

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VII PRINCIPALS FUND, L.P. · CIK 0001656513 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth Fund II, L.P.

Disclosed balance after: 1,294,093

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 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · derivative · entry 29

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund V, LP

Disclosed balance after: 116,722

Underlying: Class A Common Stock · 38,908 shares

Expires not disclosed

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

F6 · derivative.exercise_price: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F4 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SCGF V Management, L.P., which is the general partner of Sequoia Capital U.S. Growth Fund V, LP. As a result, SC US (TTGP), Ltd. and SCGF V Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital U.S. Growth Fund V, LP. Each of SC US (TTGP), Ltd. and SCGF V Management, L.P. disclaims beneficial ownership of the securities held by Sequoia Capital U.S. Growth Fund V, LP. except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · derivative · entry 27

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth VII Principals Fund, LP

Disclosed balance after: 734,699

Underlying: Class A Common Stock · 244,900 shares

Expires not disclosed

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

F6 · derivative.exercise_price: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F3 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · derivative · entry 25

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund VII, LP

Disclosed balance after: 11,289,861

Underlying: Class A Common Stock · 3,763,287 shares

Expires not disclosed

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

F6 · derivative.exercise_price: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F3 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · derivative · entry 23

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth II Principals Fund, L.P.

Disclosed balance after: 48,122

Underlying: Class A Common Stock · 16,041 shares

Expires not disclosed

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

F6 · derivative.exercise_price: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F1 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · derivative · entry 21

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth Fund II, L.P.

Disclosed balance after: 3,882,278

Underlying: Class A Common Stock · 1,294,093 shares

Expires not disclosed

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

F6 · derivative.exercise_price: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F1 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · nonDerivative · entry 19

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund V, LP

Disclosed balance after: 0

F5 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F4 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SCGF V Management, L.P., which is the general partner of Sequoia Capital U.S. Growth Fund V, LP. As a result, SC US (TTGP), Ltd. and SCGF V Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital U.S. Growth Fund V, LP. Each of SC US (TTGP), Ltd. and SCGF V Management, L.P. disclaims beneficial ownership of the securities held by Sequoia Capital U.S. Growth Fund V, LP. except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · nonDerivative · entry 17

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth VII Principals Fund, LP

Disclosed balance after: 0

F5 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F3 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · nonDerivative · entry 15

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund VII, LP

Disclosed balance after: 0

F5 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F3 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · nonDerivative · entry 13

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth II Principals Fund, L.P.

Disclosed balance after: 0

F5 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F1 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · nonDerivative · entry 11

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth Fund II, L.P.

Disclosed balance after: 0

F5 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F1 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · nonDerivative · entry 9

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund V, LP

Disclosed balance after: 38,908

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

F4 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SCGF V Management, L.P., which is the general partner of Sequoia Capital U.S. Growth Fund V, LP. As a result, SC US (TTGP), Ltd. and SCGF V Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital U.S. Growth Fund V, LP. Each of SC US (TTGP), Ltd. and SCGF V Management, L.P. disclaims beneficial ownership of the securities held by Sequoia Capital U.S. Growth Fund V, LP. except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · nonDerivative · entry 7

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth VII Principals Fund, LP

Disclosed balance after: 244,900

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 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · nonDerivative · entry 5

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund VII, LP

Disclosed balance after: 3,763,287

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 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · nonDerivative · entry 3

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth II Principals Fund, L.P.

Disclosed balance after: 16,041

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 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007691 · doc4.xml · nonDerivative · entry 1

SC US (TTGP), LTD. · CIK 0001607841 · 10% owner

LEONE DOUGLAS M · CIK 0001195580 · 10% owner

Abramson Michael Saul · CIK 0001766513 · 10% owner

SC Global Growth II Management, L.P. · CIK 0001743989 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH FUND II, L.P. · CIK 0001656515 · 10% owner

SEQUOIA CAPITAL GLOBAL GROWTH II PRINCIPALS FUND, L.P. · CIK 0001656516 · 10% owner

SCGF V Management, L.P. · CIK 0001552459 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND V, L.P. · CIK 0001528109 · 10% owner

SC U.S. Growth VII Management, L.P. · CIK 0001742978 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VII, L.P. · CIK 0001656511 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth Fund II, L.P.

Disclosed balance after: 1,294,093

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 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-20-007695 · doc4.xml · derivative · entry 32

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund V, LP

Disclosed balance after: 116,722

Underlying: Class A Common Stock · 38,908 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 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F12 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F12 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SCGF V Management, L.P., which is the general partner of Sequoia Capital U.S. Growth Fund V, LP. As a result, SC US (TTGP), Ltd. and SCGF V Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital U.S. Growth Fund V, LP. Each of SC US (TTGP), Ltd. and SCGF V Management, L.P. disclaims beneficial ownership of the securities held by Sequoia Capital U.S. Growth Fund V, LP. except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F7 · ownership.nature: The Reporting Person is a non-managing member of SCGF V Management, L.P. SCGF V Management, L.P. is the general partner of Sequoia Capital U.S. Growth Fund V, LP. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0000899243-20-007695 · doc4.xml · derivative · entry 30

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth VII Principals Fund, LP

Disclosed balance after: 734,699

Underlying: Class A Common Stock · 244,900 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 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F12 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F12 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F4 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F5 · ownership.nature: The Reporting Person is a managing member of SC U.S. Growth VII Management, L.P. SC U.S. Growth VII Management, L.P. is the partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0000899243-20-007695 · doc4.xml · derivative · entry 28

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund VII, LP

Disclosed balance after: 11,289,861

Underlying: Class A Common Stock · 3,763,287 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 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F12 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F12 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F4 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F5 · ownership.nature: The Reporting Person is a managing member of SC U.S. Growth VII Management, L.P. SC U.S. Growth VII Management, L.P. is the partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0000899243-20-007695 · doc4.xml · derivative · entry 26

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth II Principals Fund, L.P.

Disclosed balance after: 48,122

Underlying: Class A Common Stock · 16,041 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 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F12 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F12 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F1 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F3 · ownership.nature: The Reporting Person is a non-managing member of SC Global Growth II Management, L.P. SC Global Growth II Management, L.P. is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0000899243-20-007695 · doc4.xml · derivative · entry 24

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth Fund II, L.P.

Disclosed balance after: 3,882,278

Underlying: Class A Common Stock · 1,294,093 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 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F12 · derivative.exercise_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F12 · derivative.expiration_date: Each share of Class B Common Stock is convertible 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 held by the Reporting Person will automatically convert into one share of Class A Common Stock upon (a) other than Eric S. Yuan, the death of the Reporting Person, or (b) any transfer by the Reporting Person except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F1 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F3 · ownership.nature: The Reporting Person is a non-managing member of SC Global Growth II Management, L.P. SC Global Growth II Management, L.P. is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0000899243-20-007695 · doc4.xml · nonDerivative · entry 21

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By estate planning vehicle

Disclosed balance after: 259,087

F9 · kind: Represents the receipt of shares of Class A Common Stock of the Issuer by virtue of the pro rata in-kind distributions described in footnote (8) above.

SEC source: 0000899243-20-007695 · doc4.xml · nonDerivative · entry 19

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund V, LP

Disclosed balance after: 0

F8 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F6 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SCGF V Management, L.P., which is the general partner of Sequoia Capital U.S. Growth Fund V, LP. As a result, SC US (TTGP), Ltd. and SCGF V Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital U.S. Growth Fund V, LP. Each of SC US (TTGP), Ltd. and SCGF V Management, L.P. disclaims beneficial ownership of the securities held by Sequoia Capital U.S. Growth Fund V, LP. except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F7 · ownership.nature: The Reporting Person is a non-managing member of SCGF V Management, L.P. SCGF V Management, L.P. is the general partner of Sequoia Capital U.S. Growth Fund V, LP. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0000899243-20-007695 · doc4.xml · nonDerivative · entry 17

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth VII Principals Fund, LP

Disclosed balance after: 0

F8 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F4 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F5 · ownership.nature: The Reporting Person is a managing member of SC U.S. Growth VII Management, L.P. SC U.S. Growth VII Management, L.P. is the partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0000899243-20-007695 · doc4.xml · nonDerivative · entry 15

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund VII, LP

Disclosed balance after: 0

F8 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F4 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F5 · ownership.nature: The Reporting Person is a managing member of SC U.S. Growth VII Management, L.P. SC U.S. Growth VII Management, L.P. is the partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0000899243-20-007695 · doc4.xml · nonDerivative · entry 13

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth II Principals Fund, L.P.

Disclosed balance after: 0

F8 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F1 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F3 · ownership.nature: The Reporting Person is a non-managing member of SC Global Growth II Management, L.P. SC Global Growth II Management, L.P. is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0000899243-20-007695 · doc4.xml · nonDerivative · entry 11

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth Fund II, L.P.

Disclosed balance after: 0

F8 · kind: Represents a pro rata distribution of Class A Common Stock of the Issuer to partners or members for no consideration and includes subsequent distributions by general partners or managing members to their respective partners or members.

F1 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F3 · ownership.nature: The Reporting Person is a non-managing member of SC Global Growth II Management, L.P. SC Global Growth II Management, L.P. is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0000899243-20-007695 · doc4.xml · nonDerivative · entry 9

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund V, LP

Disclosed balance after: 38,908

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

F6 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SCGF V Management, L.P., which is the general partner of Sequoia Capital U.S. Growth Fund V, LP. As a result, SC US (TTGP), Ltd. and SCGF V Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital U.S. Growth Fund V, LP. Each of SC US (TTGP), Ltd. and SCGF V Management, L.P. disclaims beneficial ownership of the securities held by Sequoia Capital U.S. Growth Fund V, LP. except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F7 · ownership.nature: The Reporting Person is a non-managing member of SCGF V Management, L.P. SCGF V Management, L.P. is the general partner of Sequoia Capital U.S. Growth Fund V, LP. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0000899243-20-007695 · doc4.xml · nonDerivative · entry 7

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth VII Principals Fund, LP

Disclosed balance after: 244,900

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

F4 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F5 · ownership.nature: The Reporting Person is a managing member of SC U.S. Growth VII Management, L.P. SC U.S. Growth VII Management, L.P. is the partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0000899243-20-007695 · doc4.xml · nonDerivative · entry 5

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund VII, LP

Disclosed balance after: 3,763,287

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

F4 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC U.S. Growth VII Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund, LP or collectively, the SC US GFVII Funds. As a result, SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC US GFVII Funds. Each of SC US (TTGP), Ltd. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the securities held by the SC US GFVII Funds except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F5 · ownership.nature: The Reporting Person is a managing member of SC U.S. Growth VII Management, L.P. SC U.S. Growth VII Management, L.P. is the partner of each of Sequoia Capital U.S. Growth Fund VII, LP and Sequoia Capital U.S. Growth VII Principals Fund. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0000899243-20-007695 · doc4.xml · nonDerivative · entry 3

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth II Principals Fund, L.P.

Disclosed balance after: 16,041

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 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F3 · ownership.nature: The Reporting Person is a non-managing member of SC Global Growth II Management, L.P. SC Global Growth II Management, L.P. is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0000899243-20-007695 · doc4.xml · nonDerivative · entry 1

Eschenbach Carl M. · CIK 0001409324 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth Fund II, L.P.

Disclosed balance after: 1,294,093

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 · ownership.nature: SC US (TTGP), Ltd. is the general partner of SC Global Growth II Management, L.P., which is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. or collectively, the SC GGFII Funds. As a result, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds. In addition, the directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to the SC GGFII Funds are Messrs. Douglas M. Leone and Michael Abramson. As a result, and by virtue of the relationships described in this footnote, each such person may be deemed to share voting and dispositive power with respect to the shares held by the SC GGFII Funds.

F2 · ownership.nature: (Continued from footnote 1) Each of Messrs. Douglas M. Leone and Michael Abramson, SC US (TTGP), Ltd. and SC Global Growth II Management, L.P. disclaims beneficial ownership of the securities held by the SC GGFII Funds except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F3 · ownership.nature: The Reporting Person is a non-managing member of SC Global Growth II Management, L.P. SC Global Growth II Management, L.P. is the general partner of each of Sequoia Capital Global Growth Fund II, L.P. and Sequoia Capital Global Growth II Principals Fund, L.P. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose.

SEC source: 0001585521-20-000058 · wf-form4_158379309577727.xml · derivative · entry 7

Subotovsky Santiago · CIK 0001773806 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 2,387,557

Underlying: Class A Common Stock · 434,400 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.

F8 · derivative.exercise_price: Each share of Class B Common Stock is convertible at the option of Emergence and EZP, as applicable, into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock held by Emergence and EZP, as applicable, will automatically convert into one share of Class A Common Stock upon any transfer by Emergence and EZP, as applicable, except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock, and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F4 · kind: On March 5, 2020, EZP Opportunity, L.P. ("EZP") converted in the aggregate 434,400 shares of the Issuer's Class B Common Stock into 434,400 shares of the Issuer's Class A Common Stock. Subsequently on the same date, EZP distributed in-kind, without consideration, all 434,400 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. Of the distributed shares, 108,600 shares were distributed pursuant to a 10b5-1 plan adopted by EZP on September 27, 2019.

F5 · kind: (continued from footnote 4) Upon receipt by EEP III of its pro rata interest of the distribution (86,880 shares of Class A Common Stock), EEP III distributed in-kind, without consideration, all such shares 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.

F8 · derivative.exercise_date: Each share of Class B Common Stock is convertible at the option of Emergence and EZP, as applicable, into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock held by Emergence and EZP, as applicable, will automatically convert into one share of Class A Common Stock upon any transfer by Emergence and EZP, as applicable, except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock, and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F8 · derivative.expiration_date: Each share of Class B Common Stock is convertible at the option of Emergence and EZP, as applicable, into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock held by Emergence and EZP, as applicable, will automatically convert into one share of Class A Common Stock upon any transfer by Emergence and EZP, as applicable, except certain "Permitted Transfers" described in the Issuer's certificate of incorporation. All outstanding shares of Class B Common Stock will convert into shares of Class A Common Stock upon the earliest of (i) six months following the death or incapacity of Mr. Yuan, (ii) six months following the date that Mr. Yuan ceases providing services to the Issuer, (iii) the date specified by the holders of a majority of the shares of Class B Common Stock, and (iv) the 15-year anniversary of the closing of the Issuer's initial public offering.

F6 · ownership.nature: Shares held directly by EZP. The sole general partner of EZP is EEP III, and the sole general partner of EEP III is EGP. The Reporting Person disclaims Section 16 beneficial ownership of the shares held by EZP, except to the extent, if any, of his pecuniary interest therein, and this report shall not be deemed an admission that he is the beneficial owner of such shares for Section 16 or any other purpose.