SNOW

SEC source: 0001062993-21-002308 · form4.xml · nonDerivative · entry 3

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

Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. · CIK 0001740907 · 10% owner

SCGGF III - Endurance Partners Management, L.P. · CIK 0001767303 · 10% owner

SCGF III MANAGEMENT LLC · CIK 0001367787 · 10% owner

SEQUOIA CAPITAL GROWTH FUND III · CIK 0001367782 · 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 III - Endurance Partners, L.P.

Disclosed balance after: 10,213,048

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002308 · form4.xml · nonDerivative · entry 2

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

Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. · CIK 0001740907 · 10% owner

SCGGF III - Endurance Partners Management, L.P. · CIK 0001767303 · 10% owner

SCGF III MANAGEMENT LLC · CIK 0001367787 · 10% owner

SEQUOIA CAPITAL GROWTH FUND III · CIK 0001367782 · 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, L.P.

Disclosed balance after: 409,424

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002308 · form4.xml · nonDerivative · entry 1

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

Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. · CIK 0001740907 · 10% owner

SCGGF III - Endurance Partners Management, L.P. · CIK 0001767303 · 10% owner

SCGF III MANAGEMENT LLC · CIK 0001367787 · 10% owner

SEQUOIA CAPITAL GROWTH FUND III · CIK 0001367782 · 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, L.P.

Disclosed balance after: 6,291,460

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002309 · form4.xml · derivative · entry 12

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

SC U.S. GROWTH VI MANAGEMENT, L.P. · CIK 0001611388 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VI, L.P. · CIK 0001600143 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VI PRINCIPALS FUND, L.P. · CIK 0001603938 · 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 VI Principals Fund, L.P.

Disclosed balance after: 0

Underlying: Class A Common Stock · 5,944 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002309 · form4.xml · derivative · entry 11

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

SC U.S. GROWTH VI MANAGEMENT, L.P. · CIK 0001611388 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VI, L.P. · CIK 0001600143 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VI PRINCIPALS FUND, L.P. · CIK 0001603938 · 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 VI, L.P.

Disclosed balance after: 0

Underlying: Class A Common Stock · 544,464 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002309 · form4.xml · derivative · entry 10

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

SC U.S. GROWTH VI MANAGEMENT, L.P. · CIK 0001611388 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VI, L.P. · CIK 0001600143 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VI PRINCIPALS FUND, L.P. · CIK 0001603938 · 10% owner

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

10b5-1 filing: Not disclosed

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

Disclosed balance after: 0

Underlying: Class A Common Stock · 3,154,816 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002309 · form4.xml · derivative · entry 9

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

SC U.S. GROWTH VI MANAGEMENT, L.P. · CIK 0001611388 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VI, L.P. · CIK 0001600143 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VI PRINCIPALS FUND, L.P. · CIK 0001603938 · 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 III - Endurance Partners, L.P.

Disclosed balance after: 0

Underlying: Class A Common Stock · 10,213,048 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002309 · form4.xml · derivative · entry 8

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

SC U.S. GROWTH VI MANAGEMENT, L.P. · CIK 0001611388 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VI, L.P. · CIK 0001600143 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VI PRINCIPALS FUND, L.P. · CIK 0001603938 · 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, L.P.

Disclosed balance after: 0

Underlying: Class A Common Stock · 409,424 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002309 · form4.xml · derivative · entry 7

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

SC U.S. GROWTH VI MANAGEMENT, L.P. · CIK 0001611388 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VI, L.P. · CIK 0001600143 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VI PRINCIPALS FUND, L.P. · CIK 0001603938 · 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, L.P.

Disclosed balance after: 0

Underlying: Class A Common Stock · 6,291,460 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002309 · form4.xml · nonDerivative · entry 6

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

SC U.S. GROWTH VI MANAGEMENT, L.P. · CIK 0001611388 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VI, L.P. · CIK 0001600143 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VI PRINCIPALS FUND, L.P. · CIK 0001603938 · 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 VI Principals Fund, L.P.

Disclosed balance after: 5,944

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002309 · form4.xml · nonDerivative · entry 5

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

SC U.S. GROWTH VI MANAGEMENT, L.P. · CIK 0001611388 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VI, L.P. · CIK 0001600143 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VI PRINCIPALS FUND, L.P. · CIK 0001603938 · 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 VI, L.P.

Disclosed balance after: 544,464

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002309 · form4.xml · nonDerivative · entry 4

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

SC U.S. GROWTH VI MANAGEMENT, L.P. · CIK 0001611388 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VI, L.P. · CIK 0001600143 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VI PRINCIPALS FUND, L.P. · CIK 0001603938 · 10% owner

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

10b5-1 filing: Not disclosed

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

Disclosed balance after: 3,154,816

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002309 · form4.xml · nonDerivative · entry 3

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

SC U.S. GROWTH VI MANAGEMENT, L.P. · CIK 0001611388 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VI, L.P. · CIK 0001600143 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VI PRINCIPALS FUND, L.P. · CIK 0001603938 · 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 III - Endurance Partners, L.P.

Disclosed balance after: 10,213,048

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002309 · form4.xml · nonDerivative · entry 2

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

SC U.S. GROWTH VI MANAGEMENT, L.P. · CIK 0001611388 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VI, L.P. · CIK 0001600143 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VI PRINCIPALS FUND, L.P. · CIK 0001603938 · 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, L.P.

Disclosed balance after: 409,424

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002309 · form4.xml · nonDerivative · entry 1

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

SC U.S. GROWTH VI MANAGEMENT, L.P. · CIK 0001611388 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH FUND VI, L.P. · CIK 0001600143 · 10% owner

SEQUOIA CAPITAL U.S. GROWTH VI PRINCIPALS FUND, L.P. · CIK 0001603938 · 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, L.P.

Disclosed balance after: 6,291,460

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) As a result, SC US (TTGP), Ltd. may be deemed to share voting and dispositive power with respect to the shares held by GGF III, the GFVI Funds, and the GFVII Funds. SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, L.P., and, as a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Fund III, L.P. The directors and stockholders of SC US (TTGP), Ltd. who exercise voting and investment discretion with respect to GGF III are Douglas Leone and Roelof Botha. By virtue of the relationships described in this paragraph, Douglas Leone and Roelof Botha may be deemed to share voting and dispositive power with respect to the shares held by GGF III. Each of Douglas Leone, Roelof Botha, SC US (TTGP), Ltd.,

F4 · ownership.nature: (Continued from Footnote 3) SCGGF III - Endurance Partners Management, L.P., SC U.S. Growth VI Management, L.P. and SC U.S. Growth VII Management, L.P. disclaims beneficial ownership of the shares held by GGF III, the GFVI Funds and GFVII Funds, as applicable, except to the extent of his or 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. SCGF III Management, LLC disclaims beneficial ownership of the shares held by Sequoia Capital Growth Fund III, L.P., 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: 0001062993-21-002311 · form4.xml · derivative · entry 12

Eschenbach Carl M. · CIK 0001409324 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth VI Principals Fund, L.P.

Disclosed balance after: 0

Underlying: Class A Common Stock · 5,944 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: The Reporting Person is a director and stockholder of SC US (TTGP), Ltd. SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, 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 for any other purposes.

SEC source: 0001062993-21-002311 · form4.xml · derivative · entry 11

Eschenbach Carl M. · CIK 0001409324 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund VI, L.P.

Disclosed balance after: 0

Underlying: Class A Common Stock · 544,464 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: The Reporting Person is a director and stockholder of SC US (TTGP), Ltd. SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, 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 for any other purposes.

SEC source: 0001062993-21-002311 · form4.xml · derivative · entry 10

Eschenbach Carl M. · CIK 0001409324 · Director · 10% owner

10b5-1 filing: Not disclosed

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

Disclosed balance after: 0

Underlying: Class A Common Stock · 3,154,816 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: The Reporting Person is a director and stockholder of SC US (TTGP), Ltd. SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, 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 for any other purposes.

SEC source: 0001062993-21-002311 · form4.xml · derivative · entry 9

Eschenbach Carl M. · CIK 0001409324 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth Fund III - Endurance Partners, L.P.

Disclosed balance after: 0

Underlying: Class A Common Stock · 10,213,048 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: The Reporting Person is a director and stockholder of SC US (TTGP), Ltd. SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, 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 for any other purposes.

SEC source: 0001062993-21-002311 · form4.xml · derivative · entry 8

Eschenbach Carl M. · CIK 0001409324 · Director · 10% owner

10b5-1 filing: Not disclosed

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

Disclosed balance after: 0

Underlying: Class A Common Stock · 409,424 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: The Reporting Person is a director and stockholder of SC US (TTGP), Ltd. SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, 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 for any other purposes.

SEC source: 0001062993-21-002311 · form4.xml · derivative · entry 7

Eschenbach Carl M. · CIK 0001409324 · Director · 10% owner

10b5-1 filing: Not disclosed

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

Disclosed balance after: 0

Underlying: Class A Common Stock · 6,291,460 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: The Reporting Person is a director and stockholder of SC US (TTGP), Ltd. SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, 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 for any other purposes.

SEC source: 0001062993-21-002311 · form4.xml · nonDerivative · entry 6

Eschenbach Carl M. · CIK 0001409324 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth VI Principals Fund, L.P.

Disclosed balance after: 5,944

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: The Reporting Person is a director and stockholder of SC US (TTGP), Ltd. SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, 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 for any other purposes.

SEC source: 0001062993-21-002311 · form4.xml · nonDerivative · entry 5

Eschenbach Carl M. · CIK 0001409324 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital U.S. Growth Fund VI, L.P.

Disclosed balance after: 544,464

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: The Reporting Person is a director and stockholder of SC US (TTGP), Ltd. SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, 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 for any other purposes.

SEC source: 0001062993-21-002311 · form4.xml · nonDerivative · entry 4

Eschenbach Carl M. · CIK 0001409324 · Director · 10% owner

10b5-1 filing: Not disclosed

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

Disclosed balance after: 3,154,816

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: The Reporting Person is a director and stockholder of SC US (TTGP), Ltd. SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, 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 for any other purposes.

SEC source: 0001062993-21-002311 · form4.xml · nonDerivative · entry 3

Eschenbach Carl M. · CIK 0001409324 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · Sequoia Capital Global Growth Fund III - Endurance Partners, L.P.

Disclosed balance after: 10,213,048

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: The Reporting Person is a director and stockholder of SC US (TTGP), Ltd. SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, 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 for any other purposes.

SEC source: 0001062993-21-002311 · form4.xml · nonDerivative · entry 2

Eschenbach Carl M. · CIK 0001409324 · Director · 10% owner

10b5-1 filing: Not disclosed

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

Disclosed balance after: 409,424

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: The Reporting Person is a director and stockholder of SC US (TTGP), Ltd. SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, 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 for any other purposes.

SEC source: 0001062993-21-002311 · form4.xml · nonDerivative · entry 1

Eschenbach Carl M. · CIK 0001409324 · Director · 10% owner

10b5-1 filing: Not disclosed

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

Disclosed balance after: 6,291,460

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 · security: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: The Reporting Person is a director and stockholder of SC US (TTGP), Ltd. SC US (TTGP), Ltd. is (i) the general partner of SCGGF III - Endurance Partners Management, L.P., which is the general partner of Sequoia Capital Global Growth Fund III - Endurance Partners, L.P. (GGF III); (ii) the general partner of SC U.S. Growth VI Management, L.P., which is the general partner of each of Sequoia Capital U.S. Growth Fund VI, L.P. and Sequoia Capital U.S. Growth VI Principals Fund, L.P. (collectively, the GFVI Funds); and (iii) 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, L.P. and Sequoia Capital U.S. Growth VII Principals Fund, L.P. (collectively, the GFVII Funds).

F3 · ownership.nature: (Continued from Footnote 2) SCGF III Management, LLC is a general partner of Sequoia Capital Growth Fund III, 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 for any other purposes.

SEC source: 0001104659-21-031673 · tm218635-1_4seq1.xml · derivative · entry 3

GERSTNER BRAD · CIK 0001775157 · 10% owner

Altimeter Capital Management, LP · CIK 0001541617 · 10% owner

Altimeter Capital Management General Partner, LLC · CIK 0001825200 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Class A Common Stock · 22,729,505 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.

F5 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of each Reporting Person into Class A Common Stock on a 1-for-1 basis and has no expiration date. On any transfer of shares of Class B Common Stock, each such transferred share will automatically convert into one share of Class A Common Stock, except for certain "Permitted Transfers" described in the Issuer's amended and restated certificate of incorporation.

F6 · derivative.exercise_price: (Continued from footnote 6) Each share of Class B Common Stock held by each Reporting Person will automatically convert into one share of Class A Common Stock, upon the following: (1) the sale or transfer of such share of Class B Common Stock; (2) the death of such Reporting Person; and (3) on the final conversion date, defined as the earlier of (a) the first trading day falling nine months after the date on which the outstanding shares of Class B Common Stock represent less than 10% of the then outstanding Class A and Class B Common Stock; (b) the seventh anniversary of the effectiveness of the registration statement in connection with the Issuer's IPO; or (c) the date specified by a vote of the holders of a majority of the outstanding shares of Class B Common Stock, voting as a single class.

F7 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F5 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of each Reporting Person into Class A Common Stock on a 1-for-1 basis and has no expiration date. On any transfer of shares of Class B Common Stock, each such transferred share will automatically convert into one share of Class A Common Stock, except for certain "Permitted Transfers" described in the Issuer's amended and restated certificate of incorporation.

F6 · derivative.exercise_date: (Continued from footnote 6) Each share of Class B Common Stock held by each Reporting Person will automatically convert into one share of Class A Common Stock, upon the following: (1) the sale or transfer of such share of Class B Common Stock; (2) the death of such Reporting Person; and (3) on the final conversion date, defined as the earlier of (a) the first trading day falling nine months after the date on which the outstanding shares of Class B Common Stock represent less than 10% of the then outstanding Class A and Class B Common Stock; (b) the seventh anniversary of the effectiveness of the registration statement in connection with the Issuer's IPO; or (c) the date specified by a vote of the holders of a majority of the outstanding shares of Class B Common Stock, voting as a single class.

F7 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F5 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of each Reporting Person into Class A Common Stock on a 1-for-1 basis and has no expiration date. On any transfer of shares of Class B Common Stock, each such transferred share will automatically convert into one share of Class A Common Stock, except for certain "Permitted Transfers" described in the Issuer's amended and restated certificate of incorporation.

F6 · derivative.expiration_date: (Continued from footnote 6) Each share of Class B Common Stock held by each Reporting Person will automatically convert into one share of Class A Common Stock, upon the following: (1) the sale or transfer of such share of Class B Common Stock; (2) the death of such Reporting Person; and (3) on the final conversion date, defined as the earlier of (a) the first trading day falling nine months after the date on which the outstanding shares of Class B Common Stock represent less than 10% of the then outstanding Class A and Class B Common Stock; (b) the seventh anniversary of the effectiveness of the registration statement in connection with the Issuer's IPO; or (c) the date specified by a vote of the holders of a majority of the outstanding shares of Class B Common Stock, voting as a single class.

F7 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F8 · ownership.nature: These shares were owned by the Altimeter Entities. Each of the Altimeter Fund GPs delegated share voting and investment power over these shares to the Investment Manager. The sole general partner of the Investment Manager is Altimeter Capital General Partner, LLC (the "General Partner"), and Bradley Gerstner is the sole managing principal of the Investment Manager and the General Partner, and may be deemed to have had share voting and investment power over these shares. Because of the relationship between the Investment Manager, the General Partner and Bradley Gerstner and the Altimeter Entities and the Altimeter Fund GPs, each of the Investment Manager, the General Partner and Bradley Gerstner may be deemed to have beneficially owned the securities reported herein to the extent of its direct or indirect pecuniary interests in the Altimeter Entities and the Altimeter Fund GPs.

F9 · ownership.nature: (Continued from footnote 8) Each of the Investment Manager, the General Partner and Bradley Gerstner disclaims any beneficial ownership of the securities held by the Altimeter Entities except to the extent of any pecuniary interest therein. Please see footnotes (1), (2), and (3) for a description of the as-converted shares.

SEC source: 0001104659-21-031673 · tm218635-1_4seq1.xml · nonDerivative · entry 1

GERSTNER BRAD · CIK 0001775157 · 10% owner

Altimeter Capital Management, LP · CIK 0001541617 · 10% owner

Altimeter Capital Management General Partner, LLC · CIK 0001825200 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 33,206,473

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: These shares are directly owned by Altimeter Private Partners Fund I, L.P. ("APPF I"), Altimeter Private Partners Fund II, L.P. ("APPF II"), and Altimeter Growth Sierra Fund, L.P. ("AGSF"), Altimeter Partners Fund, L.P. ("APF"), Altimeter Growth Partners Fund III, L.P. ("AGPF III"), and Altimeter Growth Partners Fund IV, L.P. ("AGPF IV") (collectively, the "Altimeter Entities"), Altimeter Private General Partner, LLC, Altimeter Private General Partner II, LLC, and Altimeter Growth Sierra General Partner, LLC, in the amounts of 12,030,328, 4,111,818, 1,798,765, 9,126,337, 4,379,699, 774,133, 743,289, 211,156, and 30,948, respectively.

F2 · ownership.nature: (Continued from footnote 1) Altimeter Private General Partner, LLC is the general partner of APPF I, Altimeter Private General Partner II, LLC is the general partner of APPF II, and Altimeter Growth Sierra General Partner, LLC is the general partner of AGSF, Altimeter General Partner, LLC is the general partner of APF, Altimeter Growth General Partner III, LLC is the general partner of AGPF III, and Altimeter Growth General Partner IV, LLC is the general partner of AGPF IV (collectively, the "Altimeter Fund GPs"). Each of the Altimeter Fund GPs has delegated share voting and investment power to Altimeter Capital Management, LP (the "Investment Manager"). The sole general partner of the Investment Manager is Altimeter Capital General Partner, LLC (the "General Partner"), and Bradley Gerstner is the sole managing principal of the Investment Manager and the General Partner, and may be deemed to share voting and investment power over these shares.

F3 · ownership.nature: (Continued from footnote 2) Because of the relationship between the Investment Manager, the General Partner and Bradley Gerstner and the Altimeter Entities and the Altimeter Fund GPs, each of the Investment Manager, the General Partner and Bradley Gerstner may be deemed to beneficially own the securities reported herein to the extent of its direct or indirect pecuniary interests in the Altimeter Entities and the Altimeter Fund GPs. Each of the Investment Manager, the General Partner and Bradley Gerstner disclaims any beneficial ownership of the securities held by the Altimeter Entities except to the extent of any pecuniary interest therein.

SEC source: 0001225208-21-004634 · doc4.xml · derivative · entry 8

Speiser Michael L · CIK 0001433644 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust (Trustees)

Disclosed balance after: 0

Underlying: Class A Common Stock · 4,117,529 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F5 · ownership.nature: Shares held by a trust of which the reporting person is a Trustee. Of these shares 2,058,765 shares are subject to transfer pursuant to the terms of a domestic relations order. The reporting person retains voting power, but has no dispositive power, with respect to the shares subject to the order, and disclaims beneficial ownership of such shares for purposes of Section 16 of the Securities Exchange Act of 1934. With respect to the remaining shares, the reporting person disclaims beneficial ownership except as to the reporting person's pecuniary interest therein.

SEC source: 0001225208-21-004634 · doc4.xml · derivative · entry 7

Speiser Michael L · CIK 0001433644 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Ltd Partnership (SHV)

Disclosed balance after: 0

Underlying: Class A Common Stock · 27,309,222 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F4 · ownership.nature: Shares held by Sutter Hill Ventures, a California Limited Partnership. The reporting person is a managing director and member of the management committee of the general partner of Sutter Hill Ventures, a California Limited Partnership. The reporting person disclaims beneficial ownership in these shares except as to the reporting person's pecuniary interest therein.

SEC source: 0001225208-21-004634 · doc4.xml · derivative · entry 6

Speiser Michael L · CIK 0001433644 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Ltd Partnership (CHAT)

Disclosed balance after: 0

Underlying: Class A Common Stock · 933,952 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F3 · ownership.nature: Shares held by a limited partnership of which the reporting person is a trustee of a trust which is the general partner. The reporting person disclaims beneficial ownership in these shares except as to the reporting person's pecuniary interest therein.

SEC source: 0001225208-21-004634 · doc4.xml · derivative · entry 5

Speiser Michael L · CIK 0001433644 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 38,700 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.direct: Shares held by the reporting person in Roth IRA. Of these shares 19,350 shares are subject to transfer pursuant to the terms of a domestic relations order. The reporting person retains voting power, but has no dispositive power, with respect to the shares subject to the order, and disclaims beneficial ownership of such shares for purposes of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001225208-21-004634 · doc4.xml · nonDerivative · entry 4

Speiser Michael L · CIK 0001433644 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust (Trustees)

Disclosed balance after: 4,117,529

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: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F5 · ownership.nature: Shares held by a trust of which the reporting person is a Trustee. Of these shares 2,058,765 shares are subject to transfer pursuant to the terms of a domestic relations order. The reporting person retains voting power, but has no dispositive power, with respect to the shares subject to the order, and disclaims beneficial ownership of such shares for purposes of Section 16 of the Securities Exchange Act of 1934. With respect to the remaining shares, the reporting person disclaims beneficial ownership except as to the reporting person's pecuniary interest therein.

SEC source: 0001225208-21-004634 · doc4.xml · nonDerivative · entry 3

Speiser Michael L · CIK 0001433644 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Ltd Partnership (SHV)

Disclosed balance after: 27,309,222

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: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F4 · ownership.nature: Shares held by Sutter Hill Ventures, a California Limited Partnership. The reporting person is a managing director and member of the management committee of the general partner of Sutter Hill Ventures, a California Limited Partnership. The reporting person disclaims beneficial ownership in these shares except as to the reporting person's pecuniary interest therein.

SEC source: 0001225208-21-004634 · doc4.xml · nonDerivative · entry 2

Speiser Michael L · CIK 0001433644 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Ltd Partnership (CHAT)

Disclosed balance after: 933,952

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: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F3 · ownership.nature: Shares held by a limited partnership of which the reporting person is a trustee of a trust which is the general partner. The reporting person disclaims beneficial ownership in these shares except as to the reporting person's pecuniary interest therein.

SEC source: 0001225208-21-004634 · doc4.xml · nonDerivative · entry 1

Speiser Michael L · CIK 0001433644 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 38,700

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: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.direct: Shares held by the reporting person in Roth IRA. Of these shares 19,350 shares are subject to transfer pursuant to the terms of a domestic relations order. The reporting person retains voting power, but has no dispositive power, with respect to the shares subject to the order, and disclaims beneficial ownership of such shares for purposes of Section 16 of the Securities Exchange Act of 1934.

SEC source: 0001225208-21-004635 · doc4.xml · derivative · entry 2

SUTTER HILL VENTURES · CIK 0000879051 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 27,309,222 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

SEC source: 0001225208-21-004635 · doc4.xml · nonDerivative · entry 1

SUTTER HILL VENTURES · CIK 0000879051 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,309,222

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: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

SEC source: 0001640147-21-000032 · wf-form4_161481414549438.xml · derivative · entry 4

GARRETT MARK · CIK 0001246215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 767,186

Underlying: Class A Common Stock · 767,186 shares

Expires 2028-04-14

F4 · kind: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F5 · kind: In connection with the automatic conversion described in footnote 4, the outstanding options to purchase shares of Class B Common Stock that were issued under the Issuer's Amended and Restated 2012 Equity Incentive Plan remain unchanged, except that the underlying shares now represent Class A Common Stock.

F6 · derivative.exercise_date: The shares subject to the option are immediately exercisable and vest in 72 equal monthly installments beginning on April 6, 2018, subject to Reporting Person's continuous service through each such vesting date.

SEC source: 0001640147-21-000032 · wf-form4_161481414549438.xml · derivative · entry 3

GARRETT MARK · CIK 0001246215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class B Common Stock · 767,186 shares

Expires 2028-04-14

F4 · kind: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F5 · kind: In connection with the automatic conversion described in footnote 4, the outstanding options to purchase shares of Class B Common Stock that were issued under the Issuer's Amended and Restated 2012 Equity Incentive Plan remain unchanged, except that the underlying shares now represent Class A Common Stock.

F6 · derivative.exercise_date: The shares subject to the option are immediately exercisable and vest in 72 equal monthly installments beginning on April 6, 2018, subject to Reporting Person's continuous service through each such vesting date.

SEC source: 0001640147-21-000033 · wf-form4_161481418081117.xml · derivative · entry 4

Briggs Teresa · CIK 0001767659 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Trust

Disclosed balance after: 30,000

Underlying: Class A Common Stock · 30,000 shares

Expires 2029-12-10

F3 · kind: In connection with the automatic conversion described in footnote 1, the outstanding options to purchase shares of Class B Common Stock that were issued under the Issuer's Amended and Restated 2012 Equity Incentive Plan remain unchanged, except that the underlying shares now represent Class A Common Stock.

F4 · derivative.exercise_date: The option is held by The Teresa Briggs Trust for which the Reporting Person is a trustee. The shares subject to the option are immediately exercisable and vest in 48 equal monthly installments beginning on December 3, 2019, subject to Reporting Person's continuous service through each such vesting date.

F2 · ownership.nature: The shares are are held by The Teresa Briggs Trust for which the Reporting Person is a trustee.

SEC source: 0001640147-21-000033 · wf-form4_161481418081117.xml · derivative · entry 3

Briggs Teresa · CIK 0001767659 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Trust

Disclosed balance after: 0

Underlying: Class B Common Stock · 30,000 shares

Expires 2029-12-10

F3 · kind: In connection with the automatic conversion described in footnote 1, the outstanding options to purchase shares of Class B Common Stock that were issued under the Issuer's Amended and Restated 2012 Equity Incentive Plan remain unchanged, except that the underlying shares now represent Class A Common Stock.

F4 · derivative.exercise_date: The option is held by The Teresa Briggs Trust for which the Reporting Person is a trustee. The shares subject to the option are immediately exercisable and vest in 48 equal monthly installments beginning on December 3, 2019, subject to Reporting Person's continuous service through each such vesting date.

F2 · ownership.nature: The shares are are held by The Teresa Briggs Trust for which the Reporting Person is a trustee.

SEC source: 0001640147-21-000033 · wf-form4_161481418081117.xml · derivative · entry 2

Briggs Teresa · CIK 0001767659 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Trust

Disclosed balance after: 0

Underlying: Class A Common Stock · 20,000 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.exercise_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F1 · derivative.expiration_date: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: The shares are are held by The Teresa Briggs Trust for which the Reporting Person is a trustee.

SEC source: 0001640147-21-000033 · wf-form4_161481418081117.xml · nonDerivative · entry 1

Briggs Teresa · CIK 0001767659 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Trust

Disclosed balance after: 20,000

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

F1 · price: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · ownership.nature: The shares are are held by The Teresa Briggs Trust for which the Reporting Person is a trustee.

SEC source: 0001640147-21-000034 · wf-form4_161481420363050.xml · derivative · entry 4

BURTON JEREMY · CIK 0001234281 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,000

Underlying: Class A Common Stock · 50,000 shares

Expires 2030-01-21

F1 · kind: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · kind: In connection with the automatic conversion described in footnote 1, the outstanding options to purchase shares of Class B Common Stock that were issued under the Issuer's Amended and Restated 2012 Equity Incentive Plan remain unchanged, except that the underlying shares now represent Class A Common Stock.

F4 · derivative.exercise_date: The shares subject to the option are immediately exercisable and vest in 48 equal monthly installments beginning on January 22, 2020, subject to Reporting Person's continuous service through each such vesting date.

SEC source: 0001640147-21-000034 · wf-form4_161481420363050.xml · derivative · entry 3

BURTON JEREMY · CIK 0001234281 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class B Common Stock · 50,000 shares

Expires 2030-01-21

F1 · kind: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · kind: In connection with the automatic conversion described in footnote 1, the outstanding options to purchase shares of Class B Common Stock that were issued under the Issuer's Amended and Restated 2012 Equity Incentive Plan remain unchanged, except that the underlying shares now represent Class A Common Stock.

F4 · derivative.exercise_date: The shares subject to the option are immediately exercisable and vest in 48 equal monthly installments beginning on January 22, 2020, subject to Reporting Person's continuous service through each such vesting date.

SEC source: 0001640147-21-000034 · wf-form4_161481420363050.xml · derivative · entry 2

BURTON JEREMY · CIK 0001234281 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 427,546

Underlying: Class A Common Stock · 427,546 shares

Expires 2026-09-12

F1 · kind: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · kind: In connection with the automatic conversion described in footnote 1, the outstanding options to purchase shares of Class B Common Stock that were issued under the Issuer's Amended and Restated 2012 Equity Incentive Plan remain unchanged, except that the underlying shares now represent Class A Common Stock.

F3 · derivative.exercise_date: The shares subject to the option are fully vested and immediately exercisable.

SEC source: 0001640147-21-000034 · wf-form4_161481420363050.xml · derivative · entry 1

BURTON JEREMY · CIK 0001234281 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class B Common Stock · 427,546 shares

Expires 2026-09-12

F1 · kind: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · kind: In connection with the automatic conversion described in footnote 1, the outstanding options to purchase shares of Class B Common Stock that were issued under the Issuer's Amended and Restated 2012 Equity Incentive Plan remain unchanged, except that the underlying shares now represent Class A Common Stock.

F3 · derivative.exercise_date: The shares subject to the option are fully vested and immediately exercisable.

SEC source: 0001640147-21-000035 · wf-form4_161481423648862.xml · derivative · entry 2

Kramer Kelly A. · CIK 0001629885 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,000

Underlying: Class A Common Stock · 50,000 shares

Expires 2030-01-21

F1 · kind: Effective as of 5:00 p.m. Eastern Time on March 1, 2021, the date specified by the holders of a majority of the then-outstanding shares of the Issuer's Class B Common Stock, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation.

F2 · kind: In connection with the automatic conversion described in footnote 1, the outstanding options to purchase shares of Class B Common Stock that were issued under the Issuer's Amended and Restated 2012 Equity Incentive Plan remain unchanged, except that the underlying shares now represent Class A Common Stock.

F3 · derivative.exercise_date: The shares subject to the option vest in 48 equal monthly installment beginning on January 3, 2020, subject to Reporting Person's continuous service through each suchvesting date.