RBRK

SEC source: 0002019143-26-000017 · form4-08052026_110833.xml · nonDerivative · entry 10

Nithrakashyap Arvind · CIK 0002019143 · Director · Chief Technology Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 306,113

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.

SEC source: 0002019143-26-000017 · form4-08052026_110833.xml · derivative · entry 16

Nithrakashyap Arvind · CIK 0002019143 · Director · Chief Technology Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 10,079,530

Underlying: Class A Common Stock · 12,820 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.

F13 · derivative.exercise_price: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

F13 · derivative.exercise_date: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

F13 · derivative.expiration_date: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

SEC source: 0002019143-26-000017 · form4-08052026_110833.xml · nonDerivative · entry 9

Nithrakashyap Arvind · CIK 0002019143 · Director · Chief Technology Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 293,293

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

F8 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.475 to $81.34 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002019143-26-000017 · form4-08052026_110833.xml · nonDerivative · entry 8

Nithrakashyap Arvind · CIK 0002019143 · Director · Chief Technology Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 297,850

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

F7 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.47 to $80.455 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002019143-26-000017 · form4-08052026_110833.xml · nonDerivative · entry 7

Nithrakashyap Arvind · CIK 0002019143 · Director · Chief Technology Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 301,617

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

F6 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $78.47 to $79.455 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002019143-26-000017 · form4-08052026_110833.xml · nonDerivative · entry 6

Nithrakashyap Arvind · CIK 0002019143 · Director · Chief Technology Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 304,598

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

F5 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $77.50 to $78.40 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002019143-26-000017 · form4-08052026_110833.xml · nonDerivative · entry 5

Nithrakashyap Arvind · CIK 0002019143 · Director · Chief Technology Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 305,901

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

F4 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $76.47 to $77.32 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002019143-26-000017 · form4-08052026_110833.xml · nonDerivative · entry 4

Nithrakashyap Arvind · CIK 0002019143 · Director · Chief Technology Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 306,113

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.

SEC source: 0001207433-26-000018 · form4-08042026_070803.xml · derivative · entry 8

THOMPSON JOHN WENDELL · CIK 0001207433 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 50,001

Underlying: Class A Common Stock · 11,000 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.

F8 · derivative.exercise_price: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

F8 · price: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

F8 · derivative.exercise_date: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

F8 · derivative.expiration_date: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

SEC source: 0001207433-26-000018 · form4-08042026_070803.xml · derivative · entry 7

THOMPSON JOHN WENDELL · CIK 0001207433 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 61,001

Underlying: Class A Common Stock · 11,000 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.

F8 · derivative.exercise_price: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

F8 · price: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

F8 · derivative.exercise_date: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

F8 · derivative.expiration_date: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

SEC source: 0001207433-26-000018 · form4-08042026_070803.xml · derivative · entry 6

THOMPSON JOHN WENDELL · CIK 0001207433 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 77,946

Underlying: Class B Common Stock · 11,000 shares

Expires 2028-01-21

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_date: Fully vested.

SEC source: 0001207433-26-000018 · form4-08042026_070803.xml · nonDerivative · entry 5

THOMPSON JOHN WENDELL · CIK 0001207433 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,362

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 6, 2025.

F6 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $74.13 to $74.79 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0001207433-26-000018 · form4-08042026_070803.xml · nonDerivative · entry 4

THOMPSON JOHN WENDELL · CIK 0001207433 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,622

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 6, 2025.

F5 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $73.13 to $74.10 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0001207433-26-000018 · form4-08042026_070803.xml · nonDerivative · entry 3

THOMPSON JOHN WENDELL · CIK 0001207433 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 19,362

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.

SEC source: 0001207433-26-000018 · form4-08042026_070803.xml · nonDerivative · entry 2

THOMPSON JOHN WENDELL · CIK 0001207433 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By John and Sandra Thompson Trust

Disclosed balance after: 10,000

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 6, 2025.

F4 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $74.33 to $74.78 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

F3 · ownership.nature: The shares are held of record by John and Sandra Thompson Trust, for which the Reporting Person serves as a co-trustee and shares voting and dispositive power with his spouse.

SEC source: 0001207433-26-000018 · form4-08042026_070803.xml · nonDerivative · entry 1

THOMPSON JOHN WENDELL · CIK 0001207433 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By John and Sandra Thompson Trust

Disclosed balance after: 11,000

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 6, 2025.

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $73.33 to $74.15 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

F3 · ownership.nature: The shares are held of record by John and Sandra Thompson Trust, for which the Reporting Person serves as a co-trustee and shares voting and dispositive power with his spouse.

SEC source: 0001707744-26-000019 · form4-08042026_070801.xml · nonDerivative · entry 1

Wassenaar Yvonne · CIK 0001707744 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,917

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted December 15, 2025.

SEC source: 0002019143-26-000017 · form4-08052026_110833.xml · derivative · entry 15

Nithrakashyap Arvind · CIK 0002019143 · Director · Chief Technology Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 10,092,350

Underlying: Class A Common Stock · 2,502 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.

F13 · derivative.exercise_price: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

F13 · derivative.exercise_date: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

F13 · derivative.expiration_date: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

SEC source: 0002019143-26-000017 · form4-08052026_110833.xml · nonDerivative · entry 3

Nithrakashyap Arvind · CIK 0002019143 · Director · Chief Technology Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 293,293

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

F3 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $74.165 to $74.985 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002019143-26-000017 · form4-08052026_110833.xml · nonDerivative · entry 2

Nithrakashyap Arvind · CIK 0002019143 · Director · Chief Technology Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 298,471

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $73.1625 to $74.145 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002019143-26-000017 · form4-08052026_110833.xml · nonDerivative · entry 1

Nithrakashyap Arvind · CIK 0002019143 · Director · Chief Technology Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 306,113

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.

SEC source: 0002020220-26-000018 · form4-07162026_090750.xml · derivative · entry 12

Choudary Kiran Kumar · CIK 0002020220 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 12,000 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: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

F11 · derivative.exercise_date: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

F11 · derivative.expiration_date: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

SEC source: 0002020220-26-000018 · form4-07162026_090750.xml · derivative · entry 11

Choudary Kiran Kumar · CIK 0002020220 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,000

Underlying: Class A Common Stock · 12,000 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: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

F11 · derivative.exercise_date: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

F11 · derivative.expiration_date: Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

SEC source: 0002020220-26-000018 · form4-07162026_090750.xml · derivative · entry 10

Choudary Kiran Kumar · CIK 0002020220 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 19,450

Underlying: Class B Common Stock · 12,000 shares

Expires 2028-09-17

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

F10 · derivative.exercise_date: 1/4 of the shares subject to the option vested on August 20, 2019, and 1/48 of the shares vested monthly thereafter.

SEC source: 0002020220-26-000018 · form4-07162026_090750.xml · nonDerivative · entry 9

Choudary Kiran Kumar · CIK 0002020220 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 984,073

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

F9 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $88.48 to $89.02 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002020220-26-000018 · form4-07162026_090750.xml · nonDerivative · entry 8

Choudary Kiran Kumar · CIK 0002020220 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 985,173

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

F8 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.20 to $88.13 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002020220-26-000018 · form4-07162026_090750.xml · nonDerivative · entry 7

Choudary Kiran Kumar · CIK 0002020220 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 986,173

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

F7 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $86.12 to $86.96 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002020220-26-000018 · form4-07162026_090750.xml · nonDerivative · entry 6

Choudary Kiran Kumar · CIK 0002020220 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 988,273

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

F6 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.64 to $85.53 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002020220-26-000018 · form4-07162026_090750.xml · nonDerivative · entry 5

Choudary Kiran Kumar · CIK 0002020220 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 988,673

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

F5 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $83.00 to $83.64 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002020220-26-000018 · form4-07162026_090750.xml · nonDerivative · entry 4

Choudary Kiran Kumar · CIK 0002020220 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 990,473

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

F4 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.70 to $82.60 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002020220-26-000018 · form4-07162026_090750.xml · nonDerivative · entry 3

Choudary Kiran Kumar · CIK 0002020220 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 991,673

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

F3 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.64 to $81.61 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002020220-26-000018 · form4-07162026_090750.xml · nonDerivative · entry 2

Choudary Kiran Kumar · CIK 0002020220 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 996,473

F1 · kind: This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.61 to $80.60 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

SEC source: 0002020220-26-000018 · form4-07162026_090750.xml · nonDerivative · entry 1

Choudary Kiran Kumar · CIK 0002020220 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,012,073

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.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · nonDerivative · entry 21

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Lightspeed Management Company, L.L.C.

Disclosed balance after: 0

F26 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.81 to $83.33 inclusive. The Reporting Persons undertake to provide to 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.

F22 · ownership.nature: Shares are held by Lightspeed Management Company, L.L.C. ("LMC"). The Reporting Person is a managing member of LMC and shares voting and dispositive power with respect to the shares held by LMC. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · derivative · entry 27

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Lightspeed SPV I-C, LLC

Disclosed balance after: 518,008

Underlying: Class A Common Stock · 259,005 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.

F28 · derivative.exercise_price: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F28 · derivative.exercise_date: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F28 · derivative.expiration_date: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F5 · ownership.nature: Shares are held by Lightspeed SPV I-C, LLC ("Lightspeed SPV I-C"). LS SPV is the manager of Lightspeed SPV I-C. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I-C. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · derivative · entry 26

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Lightspeed SPV I-B, LLC

Disclosed balance after: 740,067

Underlying: Class A Common Stock · 370,033 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.

F28 · derivative.exercise_price: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F28 · derivative.exercise_date: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F28 · derivative.expiration_date: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F4 · ownership.nature: Shares are held by Lightspeed SPV I-B, LLC ("Lightspeed SPV I-B"). LS SPV is the manager of Lightspeed SPV I-B. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I-B. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · derivative · entry 25

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Lightspeed SPV I, LLC

Disclosed balance after: 940,297

Underlying: Class A Common Stock · 470,148 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.

F28 · derivative.exercise_price: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F28 · derivative.exercise_date: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F28 · derivative.expiration_date: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F3 · ownership.nature: Shares are held by Lightspeed SPV I, LLC ("Lightspeed SPV I"). LS SPV Management, LLC ("LS SPV") is the manager of Lightspeed SPV I. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · derivative · entry 24

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Lightspeed Venture Partners Select II, L.P.

Disclosed balance after: 483,153

Underlying: Class A Common Stock · 241,577 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.

F28 · derivative.exercise_price: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F28 · derivative.exercise_date: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F28 · derivative.expiration_date: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F2 · ownership.nature: Shares are held by Lightspeed Venture Partners Select II, L.P. ("Lightspeed Select II"). Lightspeed General Partner Select II, L.P. ("LGP Select II") is the general partner of Lightspeed Select II. Lightspeed Ultimate General Partner Select II, Ltd. ("LUGP Select II") is the general partner of LGP Select II. The Reporting Person is a director of LUGP Select II and shares voting and dispositive power with respect to the shares held by Lightspeed Select II. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · derivative · entry 23

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Lightspeed Venture Partners IX, L.P.

Disclosed balance after: 2,081,182

Underlying: Class A Common Stock · 1,040,590 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.

F28 · derivative.exercise_price: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F28 · derivative.exercise_date: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F28 · derivative.expiration_date: Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock.

F1 · ownership.nature: Shares are held by Lightspeed Venture Partners IX, L.P. ("Lightspeed IX"). Lightspeed General Partner IX, L.P. ("LGP IX") is the general partner of Lightspeed IX. Lightspeed Ultimate General Partner IX, Ltd. ("LUGP IX") is the general partner of LGP IX. The Reporting Person is a director of LUGP IX and shares voting and dispositive power with respect to the shares held by Lightspeed IX. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · nonDerivative · entry 20

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Mhatre Investments LP - Fund 3

Disclosed balance after: 96,525

F21 · kind: Represents receipt of shares in the distribution in kind described in footnote (13).

F25 · ownership.nature: The Reporting Person serves as trustee of the general partner of Mhatre Investments LP - Fund 3.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · nonDerivative · entry 19

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Mhatre Investments LP - Fund 2

Disclosed balance after: 511,537

F20 · kind: Represents receipt of shares in the distribution in kind described in footnote (9).

F24 · ownership.nature: The Reporting Person serves as trustee of the general partner of Mhatre Investments LP - Fund 2.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · nonDerivative · entry 18

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 125,351

F23 · kind: Represents receipt of shares in the distribution in kind described in footnote (19).

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · nonDerivative · entry 17

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Lightspeed Management Company, L.L.C.

Disclosed balance after: 3,979

F20 · kind: Represents receipt of shares in the distribution in kind described in footnote (9).

F21 · kind: Represents receipt of shares in the distribution in kind described in footnote (13).

F22 · ownership.nature: Shares are held by Lightspeed Management Company, L.L.C. ("LMC"). The Reporting Person is a managing member of LMC and shares voting and dispositive power with respect to the shares held by LMC. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · nonDerivative · entry 16

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By LS SPV Management, LLC

Disclosed balance after: 0

F19 · kind: Represents an in-kind distribution by LS SPV without consideration to its members.

F18 · ownership.nature: Shares are held by LS SPV. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by LS SPV. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · nonDerivative · entry 15

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By LS SPV Management, LLC

Disclosed balance after: 94,030

F17 · kind: Represents receipt of shares in the distribution in kind described in footnote (14).

F18 · ownership.nature: Shares are held by LS SPV. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by LS SPV. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · nonDerivative · entry 14

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Lightspeed SPV I-C, LLC

Disclosed balance after: 0

F16 · kind: Represents an in-kind distribution by Lightspeed SPV I-C without consideration to its members.

F5 · ownership.nature: Shares are held by Lightspeed SPV I-C, LLC ("Lightspeed SPV I-C"). LS SPV is the manager of Lightspeed SPV I-C. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I-C. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · nonDerivative · entry 13

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Lightspeed SPV I-B, LLC

Disclosed balance after: 0

F15 · kind: Represents an in-kind distribution by Lightspeed SPV I-B without consideration to its members.

F4 · ownership.nature: Shares are held by Lightspeed SPV I-B, LLC ("Lightspeed SPV I-B"). LS SPV is the manager of Lightspeed SPV I-B. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I-B. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · nonDerivative · entry 12

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Lightspeed SPV I, LLC

Disclosed balance after: 0

F14 · kind: Represents an in-kind distribution by Lightspeed SPV I without consideration to its members.

F3 · ownership.nature: Shares are held by Lightspeed SPV I, LLC ("Lightspeed SPV I"). LS SPV Management, LLC ("LS SPV") is the manager of Lightspeed SPV I. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · nonDerivative · entry 11

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Lightspeed General Partner Select II, L.P.

Disclosed balance after: 0

F13 · kind: Represents an in-kind distribution by LGP Select II without consideration to its partners.

F12 · ownership.nature: Shares are held by LGP Select II. LUGP Select II is the general partner of LGP Select II. The Reporting Person is a director of LUGP Select II and shares voting and dispositive power with respect to the shares held by LGP Select II. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001366050-26-000010 · form4-07142026_040701.xml · nonDerivative · entry 10

Mhatre Ravi · CIK 0001366050 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Lightspeed General Partner Select II, L.P.

Disclosed balance after: 51,215

F11 · kind: Represents receipt of shares in the distribution in kind described in footnote (10).

F12 · ownership.nature: Shares are held by LGP Select II. LUGP Select II is the general partner of LGP Select II. The Reporting Person is a director of LUGP Select II and shares voting and dispositive power with respect to the shares held by LGP Select II. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.