Mahdessian Ara

SEC source: 0001638826-26-000004 · form4.xml · nonDerivative · entry 4

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,329.5

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $98.27 to $99.26. 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 with the range set forth in this footnote.

SEC source: 0001638826-26-000004 · form4.xml · nonDerivative · entry 3

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,711.5

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $97.27 to $98.26. 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 with the range set forth in this footnote.

SEC source: 0001638826-26-000004 · form4.xml · nonDerivative · entry 2

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,050.5

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 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 $96.27 to $97.26. 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 with the range set forth in this footnote.

SEC source: 0001638826-26-000004 · form4.xml · nonDerivative · entry 1

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 32,000.5

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

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

SEC source: 0001638826-25-000049 · form4.xml · derivative · entry 4

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 4,408,021

Underlying: Class A Common Stock · 19,000 shares

Expires not disclosed

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

F3 · derivative.exercise_price: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the AMKE Trust dated February 1, 2019.

F3 · derivative.exercise_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F3 · derivative.expiration_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

SEC source: 0001638826-25-000049 · form4.xml · nonDerivative · entry 2

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 0

F2 · kind: The transaction reported involved a gift by the AMKE Trust dated February 1, 2019 of 19,000 shares of Class A Common Stock to a donor-advised fund.

SEC source: 0001638826-25-000049 · form4.xml · nonDerivative · entry 1

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 19,000

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

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the AMKE Trust dated February 1, 2019.

SEC source: 0001638826-25-000045 · form4.xml · derivative · entry 9

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,283,644

Underlying: Class A Common Stock · 3,039 shares

Expires not disclosed

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

F10 · derivative.exercise_price: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

F10 · derivative.exercise_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F10 · derivative.expiration_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

SEC source: 0001638826-25-000045 · form4.xml · nonDerivative · entry 8

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0.5

F2 · kind: Represents shares sold to satisfy the Reporting Person's tax withholding obligation in connection with the vesting of restricted stock units. These sales are mandated as part of the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and do not represent discretionary trades by the Reporting Person.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.31 to $108.91. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000045 · form4.xml · nonDerivative · entry 7

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85.25

F2 · kind: Represents shares sold to satisfy the Reporting Person's tax withholding obligation in connection with the vesting of restricted stock units. These sales are mandated as part of the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and do not represent discretionary trades by the Reporting Person.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.31 to $108.30. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000045 · form4.xml · nonDerivative · entry 6

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 289.5

F2 · kind: Represents shares sold to satisfy the Reporting Person's tax withholding obligation in connection with the vesting of restricted stock units. These sales are mandated as part of the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and do not represent discretionary trades by the Reporting Person.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $106.31 to $107.30. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000045 · form4.xml · nonDerivative · entry 5

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,353.25

F2 · kind: Represents shares sold to satisfy the Reporting Person's tax withholding obligation in connection with the vesting of restricted stock units. These sales are mandated as part of the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and do not represent discretionary trades by the Reporting Person.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $105.31 to $106.30. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000045 · form4.xml · nonDerivative · entry 4

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,548.25

F2 · kind: Represents shares sold to satisfy the Reporting Person's tax withholding obligation in connection with the vesting of restricted stock units. These sales are mandated as part of the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and do not represent discretionary trades by the Reporting Person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $104.31 to $105.30. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000045 · form4.xml · nonDerivative · entry 3

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,958.5

F2 · kind: Represents shares sold to satisfy the Reporting Person's tax withholding obligation in connection with the vesting of restricted stock units. These sales are mandated as part of the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and do not represent discretionary trades by the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $103.31 to $104.30. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000045 · form4.xml · nonDerivative · entry 2

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,222.25

F2 · kind: Represents shares sold to satisfy the Reporting Person's tax withholding obligation in connection with the vesting of restricted stock units. These sales are mandated as part of the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and do not represent discretionary trades by the Reporting Person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $102.31 to $103.30. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000045 · form4.xml · nonDerivative · entry 1

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,039

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

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

SEC source: 0001638826-25-000037 · form4.xml · derivative · entry 11

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 4,427,021

Underlying: Class A Common Stock · 42,666 shares

Expires not disclosed

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

F10 · derivative.exercise_price: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

F10 · derivative.exercise_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F10 · derivative.expiration_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

SEC source: 0001638826-25-000037 · form4.xml · nonDerivative · entry 9

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 0

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.62 to $108.85. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000037 · form4.xml · nonDerivative · entry 8

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 340

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.62 to $108.61. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000037 · form4.xml · nonDerivative · entry 7

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 5,314

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $106.62 to $107.61. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000037 · form4.xml · nonDerivative · entry 6

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 29,530

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $105.62 to $106.61. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000037 · form4.xml · nonDerivative · entry 5

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 42,666

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

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

SEC source: 0001638826-25-000037 · form4.xml · derivative · entry 10

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 4,469,687

Underlying: Class A Common Stock · 88,525 shares

Expires not disclosed

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

F10 · derivative.exercise_price: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

F10 · derivative.exercise_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F10 · derivative.expiration_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

SEC source: 0001638826-25-000037 · form4.xml · nonDerivative · entry 4

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 0

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.48 to $109.10. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000037 · form4.xml · nonDerivative · entry 3

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 4,799

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.48 to $108.47. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000037 · form4.xml · nonDerivative · entry 2

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 47,316

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 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 $106.48 to $107.47. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000037 · form4.xml · nonDerivative · entry 1

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 88,525

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

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

SEC source: 0001638826-25-000027 · form4.xml · derivative · entry 10

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 4,558,212

Underlying: Class A Common Stock · 46,542 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.

F9 · derivative.exercise_price: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

F9 · derivative.exercise_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F9 · derivative.expiration_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

SEC source: 0001638826-25-000027 · form4.xml · nonDerivative · entry 8

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 0

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.05 to $92.46. 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: 0001638826-25-000027 · form4.xml · nonDerivative · entry 7

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 16,199

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.05 to $92.04. 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: 0001638826-25-000027 · form4.xml · nonDerivative · entry 6

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 29,396

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.05 to $91.04. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000027 · form4.xml · nonDerivative · entry 5

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 42,770

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.05 to $90.04. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000027 · form4.xml · nonDerivative · entry 4

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 46,542

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

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

SEC source: 0001638826-25-000027 · form4.xml · derivative · entry 9

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 4,604,754

Underlying: Class A Common Stock · 14,263 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.

F9 · derivative.exercise_price: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

F9 · derivative.exercise_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F9 · derivative.expiration_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

SEC source: 0001638826-25-000027 · form4.xml · nonDerivative · entry 3

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 0

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.97 to $92.21. 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: 0001638826-25-000027 · form4.xml · nonDerivative · entry 2

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 2,168

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 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 $90.97 to $91.96. 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: 0001638826-25-000027 · form4.xml · nonDerivative · entry 1

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 14,263

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

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

SEC source: 0001638826-25-000023 · form4.xml · derivative · entry 12

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 4,619,017

Underlying: Class A Common Stock · 32,000 shares

Expires not disclosed

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

F11 · derivative.exercise_price: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

F11 · derivative.exercise_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F11 · derivative.expiration_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

SEC source: 0001638826-25-000023 · form4.xml · nonDerivative · entry 10

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 0

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $96.57 to $97.51. 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: 0001638826-25-000023 · form4.xml · nonDerivative · entry 9

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 11,220

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $95.57 to $96.56. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000023 · form4.xml · nonDerivative · entry 8

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 23,369

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $94.57 to $95.56. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000023 · form4.xml · nonDerivative · entry 7

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 29,717

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.57 to $94.56. 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: 0001638826-25-000023 · form4.xml · nonDerivative · entry 6

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 32,000

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

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

SEC source: 0001638826-25-000023 · form4.xml · derivative · entry 11

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 4,651,017

Underlying: Class A Common Stock · 32,000 shares

Expires not disclosed

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

F11 · derivative.exercise_price: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

F11 · derivative.exercise_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F11 · derivative.expiration_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

SEC source: 0001638826-25-000023 · form4.xml · nonDerivative · entry 5

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 0

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $99.34 to $99.56. 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: 0001638826-25-000023 · form4.xml · nonDerivative · entry 4

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 92

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $98.34 to $99.33. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000023 · form4.xml · nonDerivative · entry 3

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 11,268

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $97.34 to $98.33. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000023 · form4.xml · nonDerivative · entry 2

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 21,552

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 15, 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 $96.34 to $97.33. 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 with the range set forth in this footnote.

SEC source: 0001638826-25-000023 · form4.xml · nonDerivative · entry 1

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Indirect · By the AMKE Trust dated February 1, 2019

Disclosed balance after: 32,000

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

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

SEC source: 0001638826-25-000015 · form4.xml · derivative · entry 6

Mahdessian Ara · CIK 0001908788 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,286,683

Underlying: Class A Common Stock · 3,058 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.

F7 · derivative.exercise_price: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F1 · kind: Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.

F7 · derivative.exercise_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.

F7 · derivative.expiration_date: The Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers, or upon the occurrence of certain specified events, in each case as set forth in the Issuer's Amended and Restated Certificate of Incorporation.