GC Venture VIII-B, LLC

SEC source: 0000950170-24-108240 · ownership.xml · nonDerivative · entry 6

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

GCGM Investment Holdings, LP · CIK 0001774568 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by GCGM Investment Holdings, LP

Disclosed balance after: 0

F9 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $47.63 to $48.63, inclusive. The Reporting Persons undertakes to provide to the Issuer, any security holder, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote of this Form 4.

F2 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of GCGM Investment Holdings, LP ("GCGM IH") and General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GCVVIIIB, and (b) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F3 · ownership.nature: (Continued from Footnote 2) and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F4 · ownership.nature: (Continued from Footnote 3) Each party named above disclaims beneficial ownership of such shares except to the extent of its pecuniary interest therein.

SEC source: 0000950170-24-108240 · ownership.xml · nonDerivative · entry 5

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

GCGM Investment Holdings, LP · CIK 0001774568 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by GCGM Investment Holdings, LP

Disclosed balance after: 21,346

F8 · kind: Represents shares previously reported as held through GCVVIIIB Manager.

F2 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of GCGM Investment Holdings, LP ("GCGM IH") and General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GCVVIIIB, and (b) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F3 · ownership.nature: (Continued from Footnote 2) and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F4 · ownership.nature: (Continued from Footnote 3) Each party named above disclaims beneficial ownership of such shares except to the extent of its pecuniary interest therein.

SEC source: 0000950170-24-108240 · ownership.xml · nonDerivative · entry 4

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

GCGM Investment Holdings, LP · CIK 0001774568 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by GC Venture VIII-B Manager, LLC

Disclosed balance after: 0

F7 · kind: Effective September 17, 2024, GCVVIIIB Manager, a venture capital partnership, distributed in-kind on a pro-rata basis, without consideration, a total of 185,926 shares of Class A Common Stock of the Issuer to its general and limited partners.

F2 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of GCGM Investment Holdings, LP ("GCGM IH") and General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GCVVIIIB, and (b) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F3 · ownership.nature: (Continued from Footnote 2) and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F4 · ownership.nature: (Continued from Footnote 3) Each party named above disclaims beneficial ownership of such shares except to the extent of its pecuniary interest therein.

SEC source: 0000950170-24-108240 · ownership.xml · nonDerivative · entry 3

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

GCGM Investment Holdings, LP · CIK 0001774568 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by GC Venture VIII-B Manager, LLC

Disclosed balance after: 185,926

F6 · kind: Represents shares previously reported as held through GCVVIIIB.

F2 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of GCGM Investment Holdings, LP ("GCGM IH") and General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GCVVIIIB, and (b) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F3 · ownership.nature: (Continued from Footnote 2) and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F4 · ownership.nature: (Continued from Footnote 3) Each party named above disclaims beneficial ownership of such shares except to the extent of its pecuniary interest therein.

SEC source: 0000950170-24-108240 · ownership.xml · nonDerivative · entry 2

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

GCGM Investment Holdings, LP · CIK 0001774568 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F5 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $46.4392 to $47.4391, inclusive. The Reporting Persons undertakes to provide to the Issuer, any security holder, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote of this Form 4.

F2 · ownership.direct: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of GCGM Investment Holdings, LP ("GCGM IH") and General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GCVVIIIB, and (b) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F3 · ownership.direct: (Continued from Footnote 2) and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F4 · ownership.direct: (Continued from Footnote 3) Each party named above disclaims beneficial ownership of such shares except to the extent of its pecuniary interest therein.

SEC source: 0000950170-24-108240 · ownership.xml · nonDerivative · entry 1

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

GCGM Investment Holdings, LP · CIK 0001774568 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,978

F1 · kind: Effective September 17, 2024, GC Venture VIII-B, LLC ("GCVVIIIB"), a venture capital partnership, distributed in-kind on a pro-rata basis, without consideration, a total of 2,998,022 shares of Class A Common Stock of the Issuer to its general and limited partners.

F2 · ownership.direct: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of GCGM Investment Holdings, LP ("GCGM IH") and General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GCVVIIIB, and (b) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F3 · ownership.direct: (Continued from Footnote 2) and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F4 · ownership.direct: (Continued from Footnote 3) Each party named above disclaims beneficial ownership of such shares except to the extent of its pecuniary interest therein.

SEC source: 0000950170-24-107004 · ownership.xml · derivative · entry 3

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,588,813

Underlying: Class A Common Stock · 3,000,000 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.

F6 · derivative.exercise_date: The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F6 · derivative.expiration_date: The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

SEC source: 0000950170-24-107004 · ownership.xml · nonDerivative · entry 1

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,000,000

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 · ownership.direct: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (b) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F2 · ownership.direct: (Continued from Footnote 1) GCSE VIII, L.P. ("GCSE") and (c) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F3 · ownership.direct: (Continued from Footnote 2) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

F4 · ownership.direct: Promptly following the conversion of Class B Common Stock to Class A Common Stock of the Issuer, GCVVIIIB, a venture capital partnership, plans to distribute in-kind on a pro-rata basis, without consideration, a total of 2,999,802 shares of Class A Common Stock of the Issuer to its general and limited partners.

SEC source: 0000950170-24-035498 · ownership.xml · nonDerivative · entry 4

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

GCGM Investment Holdings, LP · CIK 0001774568 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by GCGM Investment Holdings, LP

Disclosed balance after: 68,904

F7 · kind: Represents shares previously reported as held through GCVVIII Manager.

F2 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of GCGM Investment Holdings, LP ("GCGM IH") and General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GCVVIII, (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F3 · ownership.nature: (Continued from Footnote 2) GCSE VIII, L.P. ("GCSE") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F4 · ownership.nature: (Continued from Footnote 3) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000950170-24-035498 · ownership.xml · nonDerivative · entry 3

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

GCGM Investment Holdings, LP · CIK 0001774568 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by GC Venture VIII Manager, LLC

Disclosed balance after: 0

F6 · kind: Effective March 22, 2024, GCVVIII Manager, a venture capital partnership, distributed in-kind on a pro-rata basis, without consideration, a total of 600,225 shares of Class A Common Stock of the Issuer to its general and limited partners.

F2 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of GCGM Investment Holdings, LP ("GCGM IH") and General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GCVVIII, (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F3 · ownership.nature: (Continued from Footnote 2) GCSE VIII, L.P. ("GCSE") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F4 · ownership.nature: (Continued from Footnote 3) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000950170-24-036497 · ownership.xml · nonDerivative · entry 1

GCGM Investment Holdings, LP · CIK 0001774568 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $36.64 to $37.17, inclusive. The Reporting Persons undertakes to provide to the Issuer, any security holder, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote of this Form 4.

F2 · ownership.direct: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of GCGM Investment Holdings, LP ("GCGM IH") and General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F3 · ownership.direct: (Continued from Footnote 2) GCSE VIII, L.P. ("GCSE") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F4 · ownership.direct: (Continued from Footnote 3) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000950170-24-035498 · ownership.xml · nonDerivative · entry 2

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

GCGM Investment Holdings, LP · CIK 0001774568 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by GC Venture VIII Manager, LLC

Disclosed balance after: 600,225

F5 · kind: Represents shares previously reported as held through GCVVIII.

F2 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of GCGM Investment Holdings, LP ("GCGM IH") and General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GCVVIII, (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F3 · ownership.nature: (Continued from Footnote 2) GCSE VIII, L.P. ("GCSE") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F4 · ownership.nature: (Continued from Footnote 3) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000950170-24-035498 · ownership.xml · nonDerivative · entry 1

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

GCGM Investment Holdings, LP · CIK 0001774568 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · kind: Effective March 20, 2024, GC Venture VIII, LLC ("GCVVIII"), a venture capital partnership, distributed in-kind on a pro-rata basis, without consideration, a total of 3,943,716 shares of Class A Common Stock of the Issuer to its general and limited partners.

F2 · ownership.direct: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of GCGM Investment Holdings, LP ("GCGM IH") and General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GCVVIII, (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F3 · ownership.direct: (Continued from Footnote 2) GCSE VIII, L.P. ("GCSE") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F4 · ownership.direct: (Continued from Footnote 3) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000950170-24-033916 · ownership.xml · derivative · entry 3

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 3,943,716 shares

Expires not disclosed

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

F6 · derivative.exercise_date: The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F6 · derivative.expiration_date: The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

SEC source: 0000950170-24-033916 · ownership.xml · nonDerivative · entry 1

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,943,716

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.direct: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F2 · ownership.direct: (Continued from Footnote 1) GCSE VIII, L.P. ("GCSE") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F3 · ownership.direct: (Continued from Footnote 2) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

F4 · ownership.direct: Promptly following the conversion of Class B Common Stock to Class A Common Stock of the Issuer, GCVVIII, a venture capital partnership, plans to distribute in-kind on a pro-rata basis, without consideration, a total of 3,943,716 shares of Class A Common Stock of the Issuer to its general and limited partners.

SEC source: 0000899243-23-019156 · doc4.xml · nonDerivative · entry 6

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by GCSE VIII, L.P.

Disclosed balance after: 0

F8 · kind: Effective September 14, 2023, GCSE, a venture capital partnership, distributed in-kind on a pro-rata basis, without consideration, a total of 64,053 shares of Class A Common Stock of the Issuer to its general and limited partners.

F1 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F2 · ownership.nature: (Continued from Footnote 1) GCSE VIII, L.P. ("GCSE") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F3 · ownership.nature: (Continued from Footnote 2) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000899243-23-019156 · doc4.xml · nonDerivative · entry 5

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by GCSE VIII, L.P.

Disclosed balance after: 64,053

F7 · kind: Represents shares previously reported as held through GCPVIII.

F1 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F2 · ownership.nature: (Continued from Footnote 1) GCSE VIII, L.P. ("GCSE") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F3 · ownership.nature: (Continued from Footnote 2) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000899243-23-019156 · doc4.xml · nonDerivative · entry 4

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by General Catalyst Partners VIII, L.P.

Disclosed balance after: 0

F6 · kind: Effective September 14, 2023, GCPVIII, a venture capital partnership, distributed in-kind on a pro-rata basis, without consideration, a total of 582,265 shares of Class A Common Stock of the Issuer to its general and limited partners.

F1 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F2 · ownership.nature: (Continued from Footnote 1) GCSE VIII, L.P. ("GCSE") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F3 · ownership.nature: (Continued from Footnote 2) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000899243-23-019156 · doc4.xml · derivative · entry 8

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 3,187,815 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.

F10 · derivative.exercise_date: The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F10 · derivative.expiration_date: The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

SEC source: 0000899243-23-019156 · doc4.xml · nonDerivative · entry 3

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by General Catalyst Partners VIII, L.P.

Disclosed balance after: 582,265

F5 · kind: Represents shares previously reported as held through GCGVIIIS.

F1 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F2 · ownership.nature: (Continued from Footnote 1) GCSE VIII, L.P. ("GCSE") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F3 · ownership.nature: (Continued from Footnote 2) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000899243-23-019156 · doc4.xml · nonDerivative · entry 2

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F4 · kind: Effective September 13, 2023, GCGVIIIS, a venture capital partnership, distributed in-kind on a pro-rata basis, without consideration, a total of 3,187,815 shares of Class A Common Stock of the Issuer to its general and limited partners.

F1 · ownership.direct: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F2 · ownership.direct: (Continued from Footnote 1) GCSE VIII, L.P. ("GCSE") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F3 · ownership.direct: (Continued from Footnote 2) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000899243-23-019156 · doc4.xml · nonDerivative · entry 1

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,187,815

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.direct: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F2 · ownership.direct: (Continued from Footnote 1) GCSE VIII, L.P. ("GCSE") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F3 · ownership.direct: (Continued from Footnote 2) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000899243-23-009100 · doc4.xml · nonDerivative · entry 6

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by GCSE VIII, L.P.

Disclosed balance after: 0

F8 · kind: Effective March 20, 2023, GCSE, a venture capital partnership, distributed in-kind on a pro-rata basis, without consideration, a total of 339,435 shares of Class A Common Stock of the Issuer to its general and limited partners.

F1 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F2 · ownership.nature: (Continued from Footnote 1) GCSE VIII, L.P. ("GCSE") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F3 · ownership.nature: (Continued from Footnote 2) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000899243-23-009100 · doc4.xml · nonDerivative · entry 5

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by GCSE VIII, L.P.

Disclosed balance after: 339,435

F7 · kind: Represents shares previously reported as held through GCPVIII.

F1 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F2 · ownership.nature: (Continued from Footnote 1) GCSE VIII, L.P. ("GCSE") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F3 · ownership.nature: (Continued from Footnote 2) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000899243-23-009100 · doc4.xml · nonDerivative · entry 4

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by General Catalyst Partners VIII, L.P.

Disclosed balance after: 0

F6 · kind: Effective March 20, 2023, GCPVIII, a venture capital partnership, distributed in-kind on a pro-rata basis, without consideration, a total of 2,242,473 shares of Class A Common Stock of the Issuer to its general and limited partners.

F1 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F2 · ownership.nature: (Continued from Footnote 1) GCSE VIII, L.P. ("GCSE") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F3 · ownership.nature: (Continued from Footnote 2) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000899243-23-009100 · doc4.xml · nonDerivative · entry 3

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · Directly held by General Catalyst Partners VIII, L.P.

Disclosed balance after: 2,242,473

F5 · kind: Represents shares previously reported as held through GCGVIIIS.

F1 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F2 · ownership.nature: (Continued from Footnote 1) GCSE VIII, L.P. ("GCSE") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F3 · ownership.nature: (Continued from Footnote 2) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000899243-23-009100 · doc4.xml · nonDerivative · entry 2

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F4 · kind: Effective March 16, 2023, GCGVIIIS, a venture capital partnership, distributed in-kind on a pro-rata basis, without consideration, a total of 11,000,000 shares of Class A Common Stock of the Issuer to its general and limited partners.

F1 · ownership.direct: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F2 · ownership.direct: (Continued from Footnote 1) GCSE VIII, L.P. ("GCSE") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F3 · ownership.direct: (Continued from Footnote 2) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000899243-23-009100 · doc4.xml · derivative · entry 8

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,187,815

Underlying: Class A Common Stock · 11,000,000 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.

F10 · derivative.exercise_date: The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F10 · derivative.expiration_date: The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

SEC source: 0000899243-23-009100 · doc4.xml · nonDerivative · entry 1

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,000,000

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 · ownership.direct: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P. ("GCPVIII"), which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII"),

F2 · ownership.direct: (Continued from Footnote 1) GCSE VIII, L.P. ("GCSE") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F3 · ownership.direct: (Continued from Footnote 2) Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000899243-23-008689 · doc4.xml · derivative · entry 4

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Directly held by General Catalyst Group VIII, L.P.

Disclosed balance after: 11,187,815

Underlying: Class A Common Stock · 3,000,000 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.

F4 · derivative.exercise_date: The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F4 · derivative.expiration_date: The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

SEC source: 0000899243-23-008689 · doc4.xml · nonDerivative · entry 2

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

SEC source: 0000899243-23-008689 · doc4.xml · nonDerivative · entry 1

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · Directly held by General Catalyst Group VIII, L.P.

Disclosed balance after: 3,000,000

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 · ownership.nature: General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P., which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and (d) the manager of General Catalyst GP X - Growth Venture, LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P. ("GCGXE").

F2 · ownership.nature: (Continued from Footnote 1) Kenneth Chenault, Joel Cutler, David Fialkow and Hemant Taneja are managing members of GCGMH LLC, and, as a result, may be deemed to share voting and investment power with respect to the shares held by GCVVIII, GCVVIIIB, GCGVIIIS, GCGVIII and GCGXE. Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000899243-21-049336 · doc4.xml · derivative · entry 9

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 13,561,283

Underlying: Class A Common Stock · 13,561,283 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.

F2 · derivative.exercise_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F2 · derivative.expiration_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F3 · ownership.nature: GCGMH LLC" is the general partner of GCGMH., which is the manager of GCGM LLC, which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P., which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and

F4 · ownership.nature: (d) the manager of General Catalyst GP X - Growth Venture LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P ("GCGXE"). Kenneth Chenault, Joel Cutler, David Fialkow and Hemant Taneja are managing members of GCGMH LLC, and, as a result, may be deemed to share voting and investment power with respect to the shares held by GCVVIII, GCVVIIIB, GCGVIIIS, GCGVIII and GCGXE. Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

F8 · ownership.nature: Consists of 8,588,813 shares held of record by GCVVIIIB, 226,021 shares held of record by GCGVIIIS,226,021 shares held of record by GCGVIIIand 4,520,428 shares held of record by GCGXE..

SEC source: 0000899243-21-049336 · doc4.xml · derivative · entry 8

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 0

Underlying: Class B Common Stock · 13,561,283 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.

F2 · derivative.exercise_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F2 · derivative.expiration_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F3 · ownership.nature: GCGMH LLC" is the general partner of GCGMH., which is the manager of GCGM LLC, which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P., which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and

F4 · ownership.nature: (d) the manager of General Catalyst GP X - Growth Venture LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P ("GCGXE"). Kenneth Chenault, Joel Cutler, David Fialkow and Hemant Taneja are managing members of GCGMH LLC, and, as a result, may be deemed to share voting and investment power with respect to the shares held by GCVVIII, GCVVIIIB, GCGVIIIS, GCGVIII and GCGXE. Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

F8 · ownership.nature: Consists of 8,588,813 shares held of record by GCVVIIIB, 226,021 shares held of record by GCGVIIIS,226,021 shares held of record by GCGVIIIand 4,520,428 shares held of record by GCGXE..

SEC source: 0000899243-21-049336 · doc4.xml · derivative · entry 7

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 5,633,880

Underlying: Class A Common Stock · 5,633,880 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.

F2 · derivative.exercise_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F2 · derivative.expiration_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F3 · ownership.nature: GCGMH LLC" is the general partner of GCGMH., which is the manager of GCGM LLC, which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P., which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and

F4 · ownership.nature: (d) the manager of General Catalyst GP X - Growth Venture LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P ("GCGXE"). Kenneth Chenault, Joel Cutler, David Fialkow and Hemant Taneja are managing members of GCGMH LLC, and, as a result, may be deemed to share voting and investment power with respect to the shares held by GCVVIII, GCVVIIIB, GCGVIIIS, GCGVIII and GCGXE. Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

F7 · ownership.nature: Consists of 3,943,716 shares held of record by GCVVIII, 845,082 shares held of record by GCGVIIIS and 845,082 shares held of record by GCGVIII.

SEC source: 0000899243-21-049336 · doc4.xml · derivative · entry 6

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 0

Underlying: Class B Common Stock · 5,633,880 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.

F2 · derivative.exercise_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F2 · derivative.expiration_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F3 · ownership.nature: GCGMH LLC" is the general partner of GCGMH., which is the manager of GCGM LLC, which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P., which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and

F4 · ownership.nature: (d) the manager of General Catalyst GP X - Growth Venture LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P ("GCGXE"). Kenneth Chenault, Joel Cutler, David Fialkow and Hemant Taneja are managing members of GCGMH LLC, and, as a result, may be deemed to share voting and investment power with respect to the shares held by GCVVIII, GCVVIIIB, GCGVIIIS, GCGVIII and GCGXE. Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

F7 · ownership.nature: Consists of 3,943,716 shares held of record by GCVVIII, 845,082 shares held of record by GCGVIIIS and 845,082 shares held of record by GCGVIII.

SEC source: 0000899243-21-049336 · doc4.xml · derivative · entry 5

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 5,001,080

Underlying: Class A Common Stock · 5,001,080 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.

F2 · derivative.exercise_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F2 · derivative.expiration_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F3 · ownership.nature: GCGMH LLC" is the general partner of GCGMH., which is the manager of GCGM LLC, which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P., which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and

F4 · ownership.nature: (d) the manager of General Catalyst GP X - Growth Venture LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P ("GCGXE"). Kenneth Chenault, Joel Cutler, David Fialkow and Hemant Taneja are managing members of GCGMH LLC, and, as a result, may be deemed to share voting and investment power with respect to the shares held by GCVVIII, GCVVIIIB, GCGVIIIS, GCGVIII and GCGXE. Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

F6 · ownership.nature: Consists of 2,500,540 shares held of record by GCGVIIIS and 2,500,540 shares held of record by GCGVIII.

SEC source: 0000899243-21-049336 · doc4.xml · derivative · entry 4

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 0

Underlying: Class B Common Stock · 5,001,080 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.

F2 · derivative.exercise_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F2 · derivative.expiration_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F3 · ownership.nature: GCGMH LLC" is the general partner of GCGMH., which is the manager of GCGM LLC, which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P., which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and

F4 · ownership.nature: (d) the manager of General Catalyst GP X - Growth Venture LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P ("GCGXE"). Kenneth Chenault, Joel Cutler, David Fialkow and Hemant Taneja are managing members of GCGMH LLC, and, as a result, may be deemed to share voting and investment power with respect to the shares held by GCVVIII, GCVVIIIB, GCGVIIIS, GCGVIII and GCGXE. Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

F6 · ownership.nature: Consists of 2,500,540 shares held of record by GCGVIIIS and 2,500,540 shares held of record by GCGVIII.

SEC source: 0000899243-21-049336 · doc4.xml · derivative · entry 3

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 21,232,344

Underlying: Class A Common Stock · 21,232,344 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.

F2 · derivative.exercise_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F2 · derivative.expiration_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F3 · ownership.nature: GCGMH LLC" is the general partner of GCGMH., which is the manager of GCGM LLC, which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P., which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and

F4 · ownership.nature: (d) the manager of General Catalyst GP X - Growth Venture LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P ("GCGXE"). Kenneth Chenault, Joel Cutler, David Fialkow and Hemant Taneja are managing members of GCGMH LLC, and, as a result, may be deemed to share voting and investment power with respect to the shares held by GCVVIII, GCVVIIIB, GCGVIIIS, GCGVIII and GCGXE. Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

F5 · ownership.nature: Consists of 10,616,172 shares held of record by GCGVIIIS and 10,616,172 shares held of record by GCGVIII.

SEC source: 0000899243-21-049336 · doc4.xml · derivative · entry 2

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 0

Underlying: Class B Common Stock · 21,232,344 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.

F2 · derivative.exercise_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F2 · derivative.expiration_date: Each share of Series C Preferred Stock, Series D Preferred Stock, Series E Preferred Stock and Series F Preferred Stock automatically converted into Class B Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock. The Class B Common Stock is convertible at any time, at the holder's election, into Class A Common Stock on a 1:1 basis.

F3 · ownership.nature: GCGMH LLC" is the general partner of GCGMH., which is the manager of GCGM LLC, which is (a) the manager of GC Venture VIII Manager, LLC ("GCVVIII Manager"), which is the manager of GC Venture VIII, LLC ("GCVVIII"), (b) the manager of GC Venture VIII-B Manager, LLC, which is the manager of GC Venture VIII-B, LLC ("GCVVIIIB"), (c) the manager of General Catalyst GP VIII, LLC ("GCGPVIII"), which is the general partner of General Catalyst Partners VIII, L.P., which is the general partner of General Catalyst Group VIII, L.P. ("GCGVIII") and General Catalyst Group VIII Supplemental, L.P. ("GCGVIIIS") and

F4 · ownership.nature: (d) the manager of General Catalyst GP X - Growth Venture LLC, which is the general partner of General Catalyst Partners X - Growth Venture, L.P., which is the general partner of General Catalyst Group X - Endurance, L.P ("GCGXE"). Kenneth Chenault, Joel Cutler, David Fialkow and Hemant Taneja are managing members of GCGMH LLC, and, as a result, may be deemed to share voting and investment power with respect to the shares held by GCVVIII, GCVVIIIB, GCGVIIIS, GCGVIII and GCGXE. Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

F5 · ownership.nature: Consists of 10,616,172 shares held of record by GCGVIIIS and 10,616,172 shares held of record by GCGVIII.

SEC source: 0000899243-21-049336 · doc4.xml · nonDerivative · entry 1

General Catalyst Group VIII Supplemental, L.P. · CIK 0001663855 · 10% owner

General Catalyst Group VIII, L.P. · CIK 0001663852 · 10% owner

GC Venture VIII, LLC · CIK 0001764365 · 10% owner

GC Venture VIII-B, LLC · CIK 0001786761 · 10% owner

General Catalyst Group X - Endurance, L.P. · CIK 0001801515 · 10% owner

General Catalyst Group XI - Endurance, L.P. · CIK 0001883723 · 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: 2,000,000

F1 · ownership.nature: In connection with the Issuer's initial public offering of Class A Common Stock, General Catalyst Group XI - Endurance, L.P. ("GCGXIE") purchased shares of Class A Common Stock from the underwriters at the initial public offering price. General Catalyst Group Management Holdings GP, LLC ("GCGMH LLC") is the general partner of General Catalyst Group Management Holdings, L.P. ("GCGMH"), which is the manager of General Catalyst Group Management, LLC ("GCGM LLC"), which is the manager of General Catalyst Endurance GP XI, LLC, which is the general partner of General Catalyst Partners XI - Endurance, L.P., which is the general partner of GCGXIE. Kenneth Chenault, Joel Cutler, David Fialkow and Hemant Taneja are managing members of GCGMH LLC, and, as a result, may be deemed to share voting and investment power with respect to the shares held by GCGXIE. Each party named above disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.