CBRS

SEC source: 0001628280-26-058119 · wk-form4_1787188343.xml · nonDerivative · entry 11

Feldman Andrew D. · CIK 0002039573 · Director · CEO, President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,810

F3 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F11 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $222.00 to $222.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001628280-26-058119 · wk-form4_1787188343.xml · nonDerivative · entry 10

Feldman Andrew D. · CIK 0002039573 · Director · CEO, President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,814

F3 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F10 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $221.00 to $221.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001628280-26-058119 · wk-form4_1787188343.xml · nonDerivative · entry 9

Feldman Andrew D. · CIK 0002039573 · Director · CEO, President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79,087

F3 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F9 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $220.00 to $220.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001628280-26-058119 · wk-form4_1787188343.xml · nonDerivative · entry 8

Feldman Andrew D. · CIK 0002039573 · Director · CEO, President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,753

F3 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F8 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $219.00 to $219.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001628280-26-058119 · wk-form4_1787188343.xml · nonDerivative · entry 7

Feldman Andrew D. · CIK 0002039573 · Director · CEO, President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 86,127

F3 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F7 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $218.00 to $218.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001628280-26-058119 · wk-form4_1787188343.xml · nonDerivative · entry 6

Feldman Andrew D. · CIK 0002039573 · Director · CEO, President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,220

F3 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F6 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $217.00 to $217.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001628280-26-058119 · wk-form4_1787188343.xml · nonDerivative · entry 5

Feldman Andrew D. · CIK 0002039573 · Director · CEO, President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,904

F3 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F5 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $216.00 to $216.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001628280-26-058119 · wk-form4_1787188343.xml · nonDerivative · entry 4

Feldman Andrew D. · CIK 0002039573 · Director · CEO, President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,168

F3 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F4 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $215.01 to $215.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001628280-26-058119 · wk-form4_1787188343.xml · nonDerivative · entry 3

Feldman Andrew D. · CIK 0002039573 · Director · CEO, President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 93,495

F3 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

SEC source: 0001628280-26-058119 · wk-form4_1787188343.xml · nonDerivative · entry 2

Feldman Andrew D. · CIK 0002039573 · Director · CEO, President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 93,497

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 · shares: The Class B Common Stock is convertible into an equal number of Class A Common Stock at any time, at the Reporting Person's election, and has no expiration date.

F2 · price: The Class B Common Stock is convertible into an equal number of Class A Common Stock at any time, at the Reporting Person's election, and has no expiration date.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · derivative · entry 15

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 818,559

Underlying: Class A Common Stock · 136,426 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 Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F18 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F18 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F4 · ownership.nature: Securities are directly held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co. LF II, L.L.C. ("FCMLF2") is the general partner of FCLF2. The Reporting Person is a manager of FCMLF2 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · derivative · entry 14

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, LLC

Disclosed balance after: 224,721

Underlying: Class A Common Stock · 37,453 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 Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F18 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F18 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F3 · ownership.nature: Securities are directly held by Foundation Capital VIII Principals Fund, L.L.C. ("FC8P"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") is the manager of FC8P. The Reporting Person is a manager of FCM8 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · derivative · entry 13

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 10,433,479

Underlying: Class A Common Stock · 1,738,913 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 Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F18 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F18 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F2 · ownership.nature: Securities are directly held by Foundation Capital VIII, L.P. ("FC8"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") is the general partner of FC8. The Reporting Person is a manager of FCM8 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · nonDerivative · entry 12

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Irrevocable Trust

Disclosed balance after: 105,070

F16 · kind: Represents receipt of shares in the distributions in kind described in footnotes (10) and (13).

F17 · ownership.nature: The securities are held by an irrevocable GST trust, of which the Reporting Person is a co-trustee. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · nonDerivative · entry 11

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Revocable Trust

Disclosed balance after: 154,809

F14 · kind: Represents receipt of shares in the distributions in kind described in footnotes (6), (10) and (13).

F15 · ownership.nature: The securities are held by a revocable family trust, of which the Reporting Person is a co-trustee. The Reporting Person disclaims beneficial ownership of such shares except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · nonDerivative · entry 10

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. LF II, L.L.C.

Disclosed balance after: 0

F13 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCMLF2 to its members without additional consideration.

F12 · ownership.nature: Securities are directly held by FCMLF2. The Reporting Person is a manager of FCMLF2 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · nonDerivative · entry 9

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. LF II, L.L.C.

Disclosed balance after: 29,741

F11 · kind: Represents receipt of shares in the distribution in kind described in footnote (7).

F12 · ownership.nature: Securities are directly held by FCMLF2. The Reporting Person is a manager of FCMLF2 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · nonDerivative · entry 8

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. VIII, L.L.C.

Disclosed balance after: 0

F10 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCM8 to its members without additional consideration.

F9 · ownership.nature: Securities are directly held by FCM8. The Reporting Person is a manager of FCM8 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · nonDerivative · entry 7

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. VIII, L.L.C.

Disclosed balance after: 449,885

F8 · kind: Represents receipt of shares in the distributions in kind described in footnotes (5) and (6).

F9 · ownership.nature: Securities are directly held by FCM8. The Reporting Person is a manager of FCM8 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · nonDerivative · entry 6

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 0

F7 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCLF2 to its general partner and limited partners without additional consideration.

F4 · ownership.nature: Securities are directly held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co. LF II, L.L.C. ("FCMLF2") is the general partner of FCLF2. The Reporting Person is a manager of FCMLF2 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · nonDerivative · entry 5

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, L.L.C.

Disclosed balance after: 0

F6 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8P to its general partner and limited partners without additional consideration.

F3 · ownership.nature: Securities are directly held by Foundation Capital VIII Principals Fund, L.L.C. ("FC8P"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") is the manager of FC8P. The Reporting Person is a manager of FCM8 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · nonDerivative · entry 4

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 0

F5 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8 to its general partner and limited partners without additional consideration.

F2 · ownership.nature: Securities are directly held by Foundation Capital VIII, L.P. ("FC8"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") is the general partner of FC8. The Reporting Person is a manager of FCM8 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · nonDerivative · entry 3

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 136,426

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 Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F4 · ownership.nature: Securities are directly held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co. LF II, L.L.C. ("FCMLF2") is the general partner of FCLF2. The Reporting Person is a manager of FCMLF2 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · nonDerivative · entry 2

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, L.L.C.

Disclosed balance after: 37,453

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 Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F3 · ownership.nature: Securities are directly held by Foundation Capital VIII Principals Fund, L.L.C. ("FC8P"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") is the manager of FC8P. The Reporting Person is a manager of FCM8 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.

SEC source: 0001567929-26-000006 · form4-08212026_120826.xml · nonDerivative · entry 1

Vassallo Steven · CIK 0001567929 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 1,738,913

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 Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F2 · ownership.nature: Securities are directly held by Foundation Capital VIII, L.P. ("FC8"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") is the general partner of FC8. The Reporting Person is a manager of FCM8 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.

SEC source: 0001628280-26-058316 · wk-form4_1787271238.xml · derivative · entry 2

Komin Robert Patrick Jr. · CIK 0001648800 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 821,653

Underlying: Class A Common Stock · 32,500 shares

Expires not disclosed

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

F1 · derivative.exercise_price: The Class B Common Stock is convertible into an equal number of Class A Common Stock at any time, at the Reporting Person's election, and has no expiration date.

F1 · price: The Class B Common Stock is convertible into an equal number of Class A Common Stock at any time, at the Reporting Person's election, and has no expiration date.

F1 · derivative.exercise_date: The Class B Common Stock is convertible into an equal number of Class A Common Stock at any time, at the Reporting Person's election, and has no expiration date.

F1 · derivative.expiration_date: The Class B Common Stock is convertible into an equal number of Class A Common Stock at any time, at the Reporting Person's election, and has no expiration date.

SEC source: 0001628280-26-058316 · wk-form4_1787271238.xml · nonDerivative · entry 1

Komin Robert Patrick Jr. · CIK 0001648800 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,500

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

F1 · price: The Class B Common Stock is convertible into an equal number of Class A Common Stock at any time, at the Reporting Person's election, and has no expiration date.

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · derivative · entry 13

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 818,559

Underlying: Class A Common Stock · 136,426 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 Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F14 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F14 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F4 · ownership.nature: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · derivative · entry 12

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, LLC

Disclosed balance after: 224,721

Underlying: Class A Common Stock · 37,453 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 Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F14 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F14 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F3 · ownership.nature: These securities are held by Foundation Capital VIII Principals Fund, L.L.C. ("FC8P"). FCM8 serves as the sole manager of FC8P and, as such, FCM8 possesses voting and dispositive power over the shares held by FC8P, and may be deemed to have indirect beneficial ownership of the shares held by FC8P. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · derivative · entry 11

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 10,433,479

Underlying: Class A Common Stock · 1,738,913 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 Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F1 · price: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F14 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F14 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.

F2 · ownership.nature: These securities are held by Foundation Capital VIII, L.P. ("FC8"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") serves as the sole general partner of FC8 and, as such, FCM8 possesses voting and dispositive power over the shares held by FC8, and may be deemed to have indirect beneficial ownership of the shares held by FC8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 10

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. LF II, L.L.C.

Disclosed balance after: 0

F13 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCMLF2 to its members without additional consideration.

F12 · ownership.nature: These securities are held by FCMLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 9

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. LF II, L.L.C.

Disclosed balance after: 29,741

F11 · kind: Represents receipt of shares in the distribution in kind described in footnote (7).

F12 · ownership.nature: These securities are held by FCMLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 8

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. VIII, L.L.C.

Disclosed balance after: 0

F10 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCM8 to its members without additional consideration.

F9 · ownership.nature: These securities are held by FCM8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 7

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Management Co. VIII, L.L.C.

Disclosed balance after: 449,885

F8 · kind: Represents receipt of shares in the distributions in kind described in footnotes (5) and (6).

F9 · ownership.nature: These securities are held by FCM8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 6

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 0

F7 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCLF2 to its general partner and limited partners without additional consideration.

F4 · ownership.nature: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 5

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, L.L.C.

Disclosed balance after: 0

F6 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8P to its general partner and limited partners without additional consideration.

F3 · ownership.nature: These securities are held by Foundation Capital VIII Principals Fund, L.L.C. ("FC8P"). FCM8 serves as the sole manager of FC8P and, as such, FCM8 possesses voting and dispositive power over the shares held by FC8P, and may be deemed to have indirect beneficial ownership of the shares held by FC8P. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 4

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 0

F5 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8 to its general partner and limited partners without additional consideration.

F2 · ownership.nature: These securities are held by Foundation Capital VIII, L.P. ("FC8"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") serves as the sole general partner of FC8 and, as such, FCM8 possesses voting and dispositive power over the shares held by FC8, and may be deemed to have indirect beneficial ownership of the shares held by FC8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 3

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital Leadership Fund II, L.P.

Disclosed balance after: 136,426

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 Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F4 · ownership.nature: These securities are held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co,. LF II, L.L.C. ("FCMLF2") serves as the sole general partner of FCLF2 and, as such, FCMLF2 possesses voting and dispositive power over the shares held by FCLF2, and may be deemed to have indirect beneficial ownership of the shares held by FCLF2. FCMLF2 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 2

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII Principals Fund, L.L.C.

Disclosed balance after: 37,453

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 Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F3 · ownership.nature: These securities are held by Foundation Capital VIII Principals Fund, L.L.C. ("FC8P"). FCM8 serves as the sole manager of FC8P and, as such, FCM8 possesses voting and dispositive power over the shares held by FC8P, and may be deemed to have indirect beneficial ownership of the shares held by FC8P. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

SEC source: 0001231919-26-000962 · form4-08212026_120802.xml · nonDerivative · entry 1

Foundation Capital Management Co. VIII, L.L.C. · CIK 0001645076 · 10% owner

Foundation Capital VIII, L.P. · CIK 0001645077 · 10% owner

Foundation Capital VIII Principals Fund, L.L.C. · CIK 0001645178 · 10% owner

Foundation Capital Management Co. LF II, L.L.C. · CIK 0001804257 · 10% owner

Foundation Capital Leadership Fund II, L.P. · CIK 0001804258 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Foundation Capital VIII, L.P.

Disclosed balance after: 1,738,913

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 Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.

F2 · ownership.nature: These securities are held by Foundation Capital VIII, L.P. ("FC8"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") serves as the sole general partner of FC8 and, as such, FCM8 possesses voting and dispositive power over the shares held by FC8, and may be deemed to have indirect beneficial ownership of the shares held by FC8. FCM8 disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

SEC source: 0001628280-26-058314 · wk-form4_1787271047.xml · derivative · entry 27

Patel Yagnesh · CIK 0001702410 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114,588

Underlying: Class A Common Stock · 6,250 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: The Class B Common Stock is convertible into an equal number of Class A Common Stock at any time, at the Reporting Person's election, and has no expiration date.

F1 · price: The Class B Common Stock is convertible into an equal number of Class A Common Stock at any time, at the Reporting Person's election, and has no expiration date.

F1 · derivative.exercise_date: The Class B Common Stock is convertible into an equal number of Class A Common Stock at any time, at the Reporting Person's election, and has no expiration date.

F1 · derivative.expiration_date: The Class B Common Stock is convertible into an equal number of Class A Common Stock at any time, at the Reporting Person's election, and has no expiration date.

SEC source: 0001628280-26-058314 · wk-form4_1787271047.xml · nonDerivative · entry 26

Patel Yagnesh · CIK 0001702410 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,676

F2 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F25 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $240.00 to $240.01, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001628280-26-058314 · wk-form4_1787271047.xml · nonDerivative · entry 25

Patel Yagnesh · CIK 0001702410 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,842

F2 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

SEC source: 0001628280-26-058314 · wk-form4_1787271047.xml · nonDerivative · entry 24

Patel Yagnesh · CIK 0001702410 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,844

F2 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

SEC source: 0001628280-26-058314 · wk-form4_1787271047.xml · nonDerivative · entry 23

Patel Yagnesh · CIK 0001702410 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,846

F2 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F24 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $236.01 to $236.97, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001628280-26-058314 · wk-form4_1787271047.xml · nonDerivative · entry 22

Patel Yagnesh · CIK 0001702410 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,890

F2 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F23 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $235.00 to $235.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001628280-26-058314 · wk-form4_1787271047.xml · nonDerivative · entry 21

Patel Yagnesh · CIK 0001702410 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,955

F2 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F22 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $234.04 to $234.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001628280-26-058314 · wk-form4_1787271047.xml · nonDerivative · entry 20

Patel Yagnesh · CIK 0001702410 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,082

F2 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F21 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $233.00 to $233.92, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001628280-26-058314 · wk-form4_1787271047.xml · nonDerivative · entry 19

Patel Yagnesh · CIK 0001702410 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,130

F2 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F20 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $232.05 to $232.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001628280-26-058314 · wk-form4_1787271047.xml · nonDerivative · entry 18

Patel Yagnesh · CIK 0001702410 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,190

F2 · shares: These shares were sold by the Reporting Person to cover tax withholding obligations in connection with the settlement of restricted stock units, resulting in the automatic conversion of the shares into Class A Common Stock immediately prior to execution of the sale. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. The Reporting Person is subject to a lock-up agreement that that was entered into with underwriters in connection with the Issuer's initial public offering and expires on the earlier of (i) 6:00 a.m. Eastern Time on the second trading day following the Issuer's release of earnings for the quarter ending September 30, 2026 or (ii) November 9, 2026. The sale of shares is a permissible exemption under the terms of the lock-up agreement.

F19 · price: The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $231.12 to $231.99, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.