STUB

SEC source: 0001193125-26-245617 · ownership.xml · nonDerivative · entry 3

Yegorov Artem · CIK 0002027961 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,671,761

F3 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-245617 · ownership.xml · nonDerivative · entry 2

Yegorov Artem · CIK 0002027961 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,743,188

F2 · shares: Represents an award of RSUs. The RSUs vest in four substantially equal quarterly installments beginning on March 31, 2026. Each RSU represents a contingent right to receive one share of Issuer Class A common stock.

SEC source: 0001193125-26-245617 · ownership.xml · nonDerivative · entry 1

Yegorov Artem · CIK 0002027961 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,527,584

F1 · shares: Represents an award of restricted stock units ("RSUs"). The RSUs will vest in substantially equal quarterly installments over a four year period beginning on March 31, 2026. Each RSU represents a contingent right to receive one share of Issuer Class A common stock.

SEC source: 0001193125-26-245618 · ownership.xml · nonDerivative · entry 2

James Constance P. · CIK 0001887204 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 496,574

F2 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-245618 · ownership.xml · nonDerivative · entry 1

James Constance P. · CIK 0001887204 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 509,764

F1 · shares: Represents an award of restricted stock units ("RSUs"). The RSUs vest in six substantially equal quarterly installments beginning on March 31, 2026. Each RSU represents a contingent right to receive one share of Issuer Class A common stock.

SEC source: 0001193125-26-227324 · ownership.xml · nonDerivative · entry 1

Streams Mark · CIK 0001885900 · Director · See Remarks

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,114,001

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on December 10, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.00 to $9.16. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-222137 · ownership.xml · nonDerivative · entry 3

Fitzgerald Scott Michael · CIK 0002063059 · Principal Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 283,615

F4 · shares: Represents an award of RSUs, of which 15,353 RSUs vested upon the grant date. Approximately 75% of the remaining RSUs will vest in four substantially equal monthly installments beginning on June 1, 2026 and approximately 25% of the remaining RSUs will vest in three substantially equal monthly installments beginning on October 1, 2026. Each RSU represents a contingent right to receive one share of Issuer Class A common stock.

SEC source: 0001193125-26-222137 · ownership.xml · nonDerivative · entry 2

Fitzgerald Scott Michael · CIK 0002063059 · Principal Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 185,898

F3 · shares: Represents an award of restricted stock units ("RSUs"), which vested in full upon the grant date.

SEC source: 0001193125-26-222137 · ownership.xml · nonDerivative · entry 1

Fitzgerald Scott Michael · CIK 0002063059 · Principal Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 93,445

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on December 10, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.52 to $7.68. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-212336 · ownership.xml · nonDerivative · entry 1

Islam Nayaab · CIK 0002059741 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,065,376

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-212343 · ownership.xml · nonDerivative · entry 1

Baker Eric Howard · CIK 0001899243 · Director · See Remarks · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,078,688

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-212341 · ownership.xml · nonDerivative · entry 1

Fitzgerald Scott Michael · CIK 0002063059 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,058

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-157107 · ownership.xml · nonDerivative · entry 1

Fitzgerald Scott Michael · CIK 0002063059 · Principal Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 96,741

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on December 10, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.17 to $6.58. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-149720 · ownership.xml · nonDerivative · entry 1

Islam Nayaab · CIK 0002059741 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,087,676

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-149717 · ownership.xml · nonDerivative · entry 1

Baker Eric Howard · CIK 0001899243 · Director · See Remarks · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,096,816

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-149718 · ownership.xml · nonDerivative · entry 1

Yegorov Artem · CIK 0002027961 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 271,697

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-149716 · ownership.xml · nonDerivative · entry 1

Fitzgerald Scott Michael · CIK 0002063059 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,360

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-149719 · ownership.xml · nonDerivative · entry 1

James Constance P. · CIK 0001887204 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 355,049

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-131869 · ownership.xml · nonDerivative · entry 1

Fitzgerald Scott Michael · CIK 0002063059 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,280

F1 · shares: Represents an award of restricted stock units ("RSUs"), which vests in four substantially equal quarterly installments beginning on March 31, 2026. Each RSU represents a contingent right to receive one share of Issuer Class A common stock.

SEC source: 0000902664-26-001756 · ownership.xml · nonDerivative · entry 1

WestCap Management, LLC · CIK 0001838470 · 10% owner

Tosi Laurence A · CIK 0001307496 · 10% owner

WestCap Stub Holdco 2024, LLC · CIK 0002084496 · 10% owner

WestCap StubHub Opportunity Fund Preferred, LLC · CIK 0002084123 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 28,991,583

F1 · kind: This transaction represents a pro-rata in-kind distribution by WestCap Stub Holdco 2024, LLC ("WestCap Stub") and WestCap StubHub Opportunity Fund Preferred, LLC ("WestCap StubHub") to their members for no consideration.

F1 · price: This transaction represents a pro-rata in-kind distribution by WestCap Stub Holdco 2024, LLC ("WestCap Stub") and WestCap StubHub Opportunity Fund Preferred, LLC ("WestCap StubHub") to their members for no consideration.

F2 · ownership.nature: The securities are held directly by WestCap Stub and WestCap StubHub.

F3 · ownership.nature: WestCap Management, LLC is the managing member of WestCap Stub and WestCap StubHub. Laurence A. Tosi may be deemed to hold voting and investment control over the shares held by WestCap Stub and WestCap StubHub. Each Reporting Person expressly disclaims beneficial ownership of the securities reported herein except to the extent of its or his pecuniary interest therein, if any.

SEC source: 0000902664-26-001694 · ownership.xml · derivative · entry 2

WestCap Management, LLC · CIK 0001838470 · 10% owner

Tosi Laurence A · CIK 0001307496 · 10% owner

WestCap Stub Holdco 2024, LLC · CIK 0002084496 · 10% owner

WestCap StubHub Opportunity Fund Preferred, LLC · CIK 0002084123 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 0

Underlying: Class A Common Stock · 6,256,893 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 Series O Preferred Stock automatically converted into Class A Common Stock, par value $0.001 per share ("Class A Common Stock") on March 17, 2026, the date that is 180 days after the closing on September 18, 2025 of the issuer's initial public offering.

F5 · derivative.expiration_date: The Series O Preferred Stock had no stated maturity.

F2 · ownership.nature: The securities reported on this line were held directly by WestCap StubHub.

F3 · ownership.nature: WestCap Management, LLC ("WestCap") is the managing member of WestCap Stub and WestCap StubHub. Laurence A. Tosi may be deemed to hold voting and investment control over the shares held by WestCap Stub and WestCap StubHub. Each Reporting Person expressly disclaims beneficial ownership of the securities reported herein except to the extent of its or his pecuniary interest therein, if any.

SEC source: 0000902664-26-001694 · ownership.xml · nonDerivative · entry 1

WestCap Management, LLC · CIK 0001838470 · 10% owner

Tosi Laurence A · CIK 0001307496 · 10% owner

WestCap Stub Holdco 2024, LLC · CIK 0002084496 · 10% owner

WestCap StubHub Opportunity Fund Preferred, LLC · CIK 0002084123 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 37,991,583

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: The securities reported on this line are held directly by WestCap Stub Holdco 2024, LLC ("WestCap Stub") and WestCap StubHub Opportunity Fund Preferred, LLC ("WestCap StubHub").

F3 · ownership.nature: WestCap Management, LLC ("WestCap") is the managing member of WestCap Stub and WestCap StubHub. Laurence A. Tosi may be deemed to hold voting and investment control over the shares held by WestCap Stub and WestCap StubHub. Each Reporting Person expressly disclaims beneficial ownership of the securities reported herein except to the extent of its or his pecuniary interest therein, if any.

SEC source: 0001193125-26-116511 · ownership.xml · derivative · entry 2

Islam Nayaab · CIK 0002059741 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 5,504 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F1 · derivative.exercise_date: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F1 · derivative.expiration_date: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

SEC source: 0001193125-26-116511 · ownership.xml · nonDerivative · entry 1

Islam Nayaab · CIK 0002059741 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,109,973

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: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

SEC source: 0001193125-26-116510 · ownership.xml · derivative · entry 3

Bhargava Sameer · CIK 0002028011 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Sameer Bhargava Family Trust (2012)

Disclosed balance after: 0

Underlying: Class A Common Stock · 16,514 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F1 · derivative.exercise_date: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F1 · derivative.expiration_date: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

SEC source: 0001193125-26-116510 · ownership.xml · nonDerivative · entry 1

Bhargava Sameer · CIK 0002028011 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Sameer Bhargava Family Trust (2012)

Disclosed balance after: 510,420

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: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F2 · balance_after: Includes shares acquired in a transaction exempt from reporting pursuant to Rule 16a-9.

SEC source: 0001193125-26-116508 · ownership.xml · derivative · entry 4

Baker Eric Howard · CIK 0001899243 · Director · See Remarks · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by family trusts

Disclosed balance after: 0

Underlying: Class A Common Stock · 55,048 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: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F1 · derivative.exercise_date: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F1 · derivative.expiration_date: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

SEC source: 0001193125-26-116508 · ownership.xml · nonDerivative · entry 1

Baker Eric Howard · CIK 0001899243 · Director · See Remarks · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by family trusts

Disclosed balance after: 55,048

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 · price: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

SEC source: 0001193125-26-116507 · ownership.xml · derivative · entry 5

Kodialam Rajini Sundar · CIK 0001746246 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Kodialam 2014 Family Trust

Disclosed balance after: 0

Underlying: Class A Common Stock · 93,617 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F1 · derivative.exercise_date: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F1 · derivative.expiration_date: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

SEC source: 0001193125-26-116507 · ownership.xml · derivative · entry 4

Kodialam Rajini Sundar · CIK 0001746246 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Sundar-Kodialam Revocable Trust

Disclosed balance after: 0

Underlying: Class A Common Stock · 55,048 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: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F1 · derivative.exercise_date: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F1 · derivative.expiration_date: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

SEC source: 0001193125-26-116507 · ownership.xml · nonDerivative · entry 2

Kodialam Rajini Sundar · CIK 0001746246 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Kodialam 2014 Family Trust

Disclosed balance after: 93,617

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: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

SEC source: 0001193125-26-116507 · ownership.xml · nonDerivative · entry 1

Kodialam Rajini Sundar · CIK 0001746246 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Sundar-Kodialam Revocable Trust

Disclosed balance after: 55,048

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 · price: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

SEC source: 0001193125-26-116506 · ownership.xml · derivative · entry 3

Blackburn Jeffrey M · CIK 0001374831 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Cresta Ventures, LLC

Disclosed balance after: 0

Underlying: Class A Common Stock · 110,097 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F1 · derivative.exercise_date: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F1 · derivative.expiration_date: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

SEC source: 0001193125-26-116506 · ownership.xml · nonDerivative · entry 1

Blackburn Jeffrey M · CIK 0001374831 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Cresta Ventures, LLC

Disclosed balance after: 110,097

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: Each share of Series M redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

SEC source: 0001193125-26-135216 · ownership.xml · derivative · entry 9

Levine Jeremy S. · CIK 0001534341 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Cloud All Star Fund LP

Disclosed balance after: 0

Underlying: Class A Common Stock · 46,808 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 redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F5 · price: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F5 · derivative.exercise_date: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F5 · derivative.expiration_date: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F2 · ownership.nature: Deer VIII & Co. L.P. ("Deer VIII LP") is the general partner of Bessemer Venture Partners VIII L.P. ("BVP VIII") and Bessemer Venture Partners VIII Institutional L.P. ("BVP VIII Inst"). Deer VIII & Co. Ltd. ("Deer VIII Ltd.") is the general partner of Deer VIII LP. Robert P. Goodman, David Cowan, Scott Ring, Sandra Grippo, Jeremy Levine, Byron Deeter and Robert M. Stavis serve as the directors of Deer VIII Ltd. and are the individuals who make investment and voting decisions on behalf of BVP VIII and BVP VIII Inst., collectively. Investment and voting decisions with respect to our shares held by BVP VIII and BVP VIII Inst are made by the directors of Deer VIII Ltd. acting as an investment committee. Deer X & Co. L.P. ("Deer X LP") is the general partner of Bessemer Venture Partners Century Fund L.P. ("BVP CF") and Bessemer Venture Partners Century Fund Institutional L.P. ("BVP CF Inst"). Deer X & Co. Ltd. ("Deer X Ltd.") is the general partner of Deer X LP. Robert P. Goodman,

F3 · ownership.nature: (Continued from footnote 2) David Cowan, Jeremy Levine, Byron Deeter, Adam Fisher, Brian Feinstein, Alex Ferrara, Stephen Kraus, Scott Ring and Sandra Grippo are the directors of Deer X Ltd. and are the individuals who make investment and voting decisions on behalf of BVP CF and BVP CF Inst., collectively. Investment and voting decisions with respect to our shares held by BVP CF and BVP CF Inst are made by the directors of Deer X Ltd. acting as an investment committee. by Deer Partners Investment Fund LLC ("DPIF") is a member-managed LLC. Voting and investment decisions over our shares held by DPIF are made by members of DPIF holding a majority in interests of DPIF's position in us. Certain affiliates of the Bessemer Entities own a material interest in Cloud All Star Fund GP, LLC, the general partner of Cloud All Star Fund, L.P. ("CASF"), which has voting and dispositive power with respect to the shares held by CASF.

F4 · ownership.nature: (Continued from footnote 3) The Reporting Person is a Partner at Bessemer Venture Partners may be deemed to have shared voting and investment power over the shares held by BVP VIII, BVP VIII Inst, BVP CF Inst, BVP CF, DPIF and CASF (as defined above). The Reporting Person disclaims beneficial ownership interest of the securities held by BVP VIII, BVP VIII Inst, BVP CF Inst, BVP CF, DPIF and CASF, except to the extent of his pecuniary interest, if any, in such securities by virtue of his indirect and/or direct interest in such entities.

SEC source: 0001193125-26-135216 · ownership.xml · derivative · entry 8

Levine Jeremy S. · CIK 0001534341 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Deer Partners Investment Fund LLC

Disclosed balance after: 0

Underlying: Class A Common Stock · 82,572 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 redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F5 · price: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F5 · derivative.exercise_date: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F5 · derivative.expiration_date: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F2 · ownership.nature: Deer VIII & Co. L.P. ("Deer VIII LP") is the general partner of Bessemer Venture Partners VIII L.P. ("BVP VIII") and Bessemer Venture Partners VIII Institutional L.P. ("BVP VIII Inst"). Deer VIII & Co. Ltd. ("Deer VIII Ltd.") is the general partner of Deer VIII LP. Robert P. Goodman, David Cowan, Scott Ring, Sandra Grippo, Jeremy Levine, Byron Deeter and Robert M. Stavis serve as the directors of Deer VIII Ltd. and are the individuals who make investment and voting decisions on behalf of BVP VIII and BVP VIII Inst., collectively. Investment and voting decisions with respect to our shares held by BVP VIII and BVP VIII Inst are made by the directors of Deer VIII Ltd. acting as an investment committee. Deer X & Co. L.P. ("Deer X LP") is the general partner of Bessemer Venture Partners Century Fund L.P. ("BVP CF") and Bessemer Venture Partners Century Fund Institutional L.P. ("BVP CF Inst"). Deer X & Co. Ltd. ("Deer X Ltd.") is the general partner of Deer X LP. Robert P. Goodman,

F3 · ownership.nature: (Continued from footnote 2) David Cowan, Jeremy Levine, Byron Deeter, Adam Fisher, Brian Feinstein, Alex Ferrara, Stephen Kraus, Scott Ring and Sandra Grippo are the directors of Deer X Ltd. and are the individuals who make investment and voting decisions on behalf of BVP CF and BVP CF Inst., collectively. Investment and voting decisions with respect to our shares held by BVP CF and BVP CF Inst are made by the directors of Deer X Ltd. acting as an investment committee. by Deer Partners Investment Fund LLC ("DPIF") is a member-managed LLC. Voting and investment decisions over our shares held by DPIF are made by members of DPIF holding a majority in interests of DPIF's position in us. Certain affiliates of the Bessemer Entities own a material interest in Cloud All Star Fund GP, LLC, the general partner of Cloud All Star Fund, L.P. ("CASF"), which has voting and dispositive power with respect to the shares held by CASF.

F4 · ownership.nature: (Continued from footnote 3) The Reporting Person is a Partner at Bessemer Venture Partners may be deemed to have shared voting and investment power over the shares held by BVP VIII, BVP VIII Inst, BVP CF Inst, BVP CF, DPIF and CASF (as defined above). The Reporting Person disclaims beneficial ownership interest of the securities held by BVP VIII, BVP VIII Inst, BVP CF Inst, BVP CF, DPIF and CASF, except to the extent of his pecuniary interest, if any, in such securities by virtue of his indirect and/or direct interest in such entities.

SEC source: 0001193125-26-135216 · ownership.xml · nonDerivative · entry 7

Levine Jeremy S. · CIK 0001534341 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Cloud All Star Fund LP

Disclosed balance after: 46,808

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 · price: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F2 · ownership.nature: Deer VIII & Co. L.P. ("Deer VIII LP") is the general partner of Bessemer Venture Partners VIII L.P. ("BVP VIII") and Bessemer Venture Partners VIII Institutional L.P. ("BVP VIII Inst"). Deer VIII & Co. Ltd. ("Deer VIII Ltd.") is the general partner of Deer VIII LP. Robert P. Goodman, David Cowan, Scott Ring, Sandra Grippo, Jeremy Levine, Byron Deeter and Robert M. Stavis serve as the directors of Deer VIII Ltd. and are the individuals who make investment and voting decisions on behalf of BVP VIII and BVP VIII Inst., collectively. Investment and voting decisions with respect to our shares held by BVP VIII and BVP VIII Inst are made by the directors of Deer VIII Ltd. acting as an investment committee. Deer X & Co. L.P. ("Deer X LP") is the general partner of Bessemer Venture Partners Century Fund L.P. ("BVP CF") and Bessemer Venture Partners Century Fund Institutional L.P. ("BVP CF Inst"). Deer X & Co. Ltd. ("Deer X Ltd.") is the general partner of Deer X LP. Robert P. Goodman,

F3 · ownership.nature: (Continued from footnote 2) David Cowan, Jeremy Levine, Byron Deeter, Adam Fisher, Brian Feinstein, Alex Ferrara, Stephen Kraus, Scott Ring and Sandra Grippo are the directors of Deer X Ltd. and are the individuals who make investment and voting decisions on behalf of BVP CF and BVP CF Inst., collectively. Investment and voting decisions with respect to our shares held by BVP CF and BVP CF Inst are made by the directors of Deer X Ltd. acting as an investment committee. by Deer Partners Investment Fund LLC ("DPIF") is a member-managed LLC. Voting and investment decisions over our shares held by DPIF are made by members of DPIF holding a majority in interests of DPIF's position in us. Certain affiliates of the Bessemer Entities own a material interest in Cloud All Star Fund GP, LLC, the general partner of Cloud All Star Fund, L.P. ("CASF"), which has voting and dispositive power with respect to the shares held by CASF.

F4 · ownership.nature: (Continued from footnote 3) The Reporting Person is a Partner at Bessemer Venture Partners may be deemed to have shared voting and investment power over the shares held by BVP VIII, BVP VIII Inst, BVP CF Inst, BVP CF, DPIF and CASF (as defined above). The Reporting Person disclaims beneficial ownership interest of the securities held by BVP VIII, BVP VIII Inst, BVP CF Inst, BVP CF, DPIF and CASF, except to the extent of his pecuniary interest, if any, in such securities by virtue of his indirect and/or direct interest in such entities.

SEC source: 0001193125-26-135216 · ownership.xml · nonDerivative · entry 6

Levine Jeremy S. · CIK 0001534341 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Deer Partners Investment Fund LLC

Disclosed balance after: 5,020,037

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 · price: Each share of redeemable preferred stock automatically converted into shares of Class A common stock of the Issuer, pursuant to the terms as specified in the Issuer's Certificate of Designation.

F2 · ownership.nature: Deer VIII & Co. L.P. ("Deer VIII LP") is the general partner of Bessemer Venture Partners VIII L.P. ("BVP VIII") and Bessemer Venture Partners VIII Institutional L.P. ("BVP VIII Inst"). Deer VIII & Co. Ltd. ("Deer VIII Ltd.") is the general partner of Deer VIII LP. Robert P. Goodman, David Cowan, Scott Ring, Sandra Grippo, Jeremy Levine, Byron Deeter and Robert M. Stavis serve as the directors of Deer VIII Ltd. and are the individuals who make investment and voting decisions on behalf of BVP VIII and BVP VIII Inst., collectively. Investment and voting decisions with respect to our shares held by BVP VIII and BVP VIII Inst are made by the directors of Deer VIII Ltd. acting as an investment committee. Deer X & Co. L.P. ("Deer X LP") is the general partner of Bessemer Venture Partners Century Fund L.P. ("BVP CF") and Bessemer Venture Partners Century Fund Institutional L.P. ("BVP CF Inst"). Deer X & Co. Ltd. ("Deer X Ltd.") is the general partner of Deer X LP. Robert P. Goodman,

F3 · ownership.nature: (Continued from footnote 2) David Cowan, Jeremy Levine, Byron Deeter, Adam Fisher, Brian Feinstein, Alex Ferrara, Stephen Kraus, Scott Ring and Sandra Grippo are the directors of Deer X Ltd. and are the individuals who make investment and voting decisions on behalf of BVP CF and BVP CF Inst., collectively. Investment and voting decisions with respect to our shares held by BVP CF and BVP CF Inst are made by the directors of Deer X Ltd. acting as an investment committee. by Deer Partners Investment Fund LLC ("DPIF") is a member-managed LLC. Voting and investment decisions over our shares held by DPIF are made by members of DPIF holding a majority in interests of DPIF's position in us. Certain affiliates of the Bessemer Entities own a material interest in Cloud All Star Fund GP, LLC, the general partner of Cloud All Star Fund, L.P. ("CASF"), which has voting and dispositive power with respect to the shares held by CASF.

F4 · ownership.nature: (Continued from footnote 3) The Reporting Person is a Partner at Bessemer Venture Partners may be deemed to have shared voting and investment power over the shares held by BVP VIII, BVP VIII Inst, BVP CF Inst, BVP CF, DPIF and CASF (as defined above). The Reporting Person disclaims beneficial ownership interest of the securities held by BVP VIII, BVP VIII Inst, BVP CF Inst, BVP CF, DPIF and CASF, except to the extent of his pecuniary interest, if any, in such securities by virtue of his indirect and/or direct interest in such entities.

SEC source: 0001193125-26-104648 · ownership.xml · nonDerivative · entry 2

Fitzgerald Scott Michael · CIK 0002063059 · Principal Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 77,961

F2 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on December 10, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.37 to $8.09. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-104654 · ownership.xml · nonDerivative · entry 1

Streams Mark · CIK 0001885900 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,346,568

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-104652 · ownership.xml · nonDerivative · entry 1

Islam Nayaab · CIK 0002059741 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,104,469

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-104650 · ownership.xml · nonDerivative · entry 1

Baker Eric Howard · CIK 0001899243 · Director · See Remarks · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,114,944

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-104648 · ownership.xml · nonDerivative · entry 1

Fitzgerald Scott Michael · CIK 0002063059 · Principal Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 106,348

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-049107 · ownership.xml · nonDerivative · entry 1

Streams Mark · CIK 0001885900 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,348,899

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-049085 · ownership.xml · nonDerivative · entry 1

Islam Nayaab · CIK 0002059741 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,126,769

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-049125 · ownership.xml · nonDerivative · entry 1

Fitzgerald Scott Michael · CIK 0002063059 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 108,248

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-049084 · ownership.xml · nonDerivative · entry 1

Baker Eric Howard · CIK 0001899243 · Director · See Remarks · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,237,385

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-014244 · ownership.xml · nonDerivative · entry 1

Streams Mark · CIK 0001885900 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,351,230

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-014238 · ownership.xml · nonDerivative · entry 1

Islam Nayaab · CIK 0002059741 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,149,066

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.

SEC source: 0001193125-26-014240 · ownership.xml · nonDerivative · entry 1

Fitzgerald Scott Michael · CIK 0002063059 · Principal Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 110,146

F1 · shares: These shares were withheld by the Company to satisfy the reporting person's tax withholding obligations. Not a market sale.