TWLO

SEC source: 0001447669-26-000077 · wk-form4_1783541843.xml · nonDerivative · entry 1

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 218,888

F1 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/18/2026.

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $206.62 to $207.4050 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of Issuer's Class A common stock.

SEC source: 0001447669-26-000075 · wk-form4_1783455644.xml · nonDerivative · entry 1

Viggiano Aidan · CIK 0001965469 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 109,724

F1 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 6/6/2025.

F2 · balance_after: A portion of these shares represent Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of Issuer's Class A common stock.

SEC source: 0001447669-26-000073 · wk-form4_1783023842.xml · nonDerivative · entry 6

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 221,661

F1 · shares: Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001447669-26-000073 · wk-form4_1783023842.xml · nonDerivative · entry 5

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 221,735

F1 · shares: Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person.

F7 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $202.85 to $203.66 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001447669-26-000073 · wk-form4_1783023842.xml · nonDerivative · entry 4

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 224,515

F1 · shares: Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person.

F6 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $201.84 to $202.8350 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001447669-26-000073 · wk-form4_1783023842.xml · nonDerivative · entry 3

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 226,075

F1 · shares: Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person.

F5 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $200.8150 to $201.7450 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001447669-26-000073 · wk-form4_1783023842.xml · nonDerivative · entry 2

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 230,361

F1 · shares: Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person.

F4 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $199.78 to $200.7150 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001447669-26-000073 · wk-form4_1783023842.xml · nonDerivative · entry 1

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 233,592

F1 · shares: Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person.

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $198.7850 to $199.64 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001965469-26-000013 · wk-form4_1783023957.xml · nonDerivative · entry 5

Viggiano Aidan · CIK 0001965469 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 118,252

F1 · shares: Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person.

F7 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $203.62 to $203.78 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of Issuer's Class A common stock.

SEC source: 0001965469-26-000013 · wk-form4_1783023957.xml · nonDerivative · entry 4

Viggiano Aidan · CIK 0001965469 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 118,492

F1 · shares: Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person.

F6 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $202.52 to $203.51 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of Issuer's Class A common stock.

SEC source: 0001965469-26-000013 · wk-form4_1783023957.xml · nonDerivative · entry 3

Viggiano Aidan · CIK 0001965469 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 120,922

F1 · shares: Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person.

F5 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $200.87 to $201.77 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of Issuer's Class A common stock.

SEC source: 0001965469-26-000013 · wk-form4_1783023957.xml · nonDerivative · entry 2

Viggiano Aidan · CIK 0001965469 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 123,701

F1 · shares: Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person.

F4 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $199.805 to $200.72 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of Issuer's Class A common stock.

SEC source: 0001965469-26-000013 · wk-form4_1783023957.xml · nonDerivative · entry 1

Viggiano Aidan · CIK 0001965469 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 126,005

F1 · shares: Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person.

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $198.81 to $199.80 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of Issuer's Class A common stock.

SEC source: 0001447669-26-000065 · wk-form4_1781728294.xml · nonDerivative · entry 1

PATRICK DEVAL L · CIK 0001053466 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,718

F1 · shares: The shares reported in this transaction represent Restricted Stock Units ("RSUs"). Each RSU represents the contingent right to receive one share of the Issuer's Class A common stock. The RSUs vested immediately on the date of grant.

F2 · balance_after: Includes RSUs that have been deferred by the Reporting Person.

SEC source: 0001104659-26-075197 · tm2618130-1_4seq1.xml · nonDerivative · entry 1

Stafman Andrew · CIK 0002018024 · Director

Ferguson Scott D. · CIK 0001658919 · See Footnotes

Sachem Head Capital Management LP · CIK 0001582090 · See Footnotes

Uncas GP LLC · CIK 0001658906 · See Footnotes

Sachem Head GP LLC · CIK 0001658917 · See Footnotes

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,891

F1 · shares: The shares reported in this transaction represent Restricted Stock Units ("RSUs") granted by Twilio Inc. (the "Issuer") to Andrew J. Stafman. Each RSU represents the contingent right to receive one share of the Issuer's Class A common stock. The RSUs vested immediately on the date of grant.

F2 · balance_after: Of these shares, all 13,891 shares represent RSUs. Includes 3,846 RSUs that have been deferred by the Reporting Person.

F3 · ownership.direct: In addition to Andrew J. Stafman, this Form 4 is being filed jointly by Sachem Head Capital Management LP ("Sachem Head"), Uncas GP LLC ("SH Management"), Sachem Head GP LLC ("Sachem Head GP"), and Scott D. Ferguson, a citizen of the United States (Mr. Ferguson and, together with Sachem Head, SH Management, Sachem GP, and Mr. Stafman, the "Reporting Persons"). Each of the Reporting Persons has the same business address as Mr. Stafman and may be deemed to be the beneficial owner of certain of the securities reported on this Form 4 (the "Subject Securities") for purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934, as amended. Each of the Reporting Persons disclaims any beneficial ownership of any of the Subject Securities, except to the extent of any pecuniary interest therein.

F4 · ownership.direct: Andrew J. Stafman is a partner at Sachem Head and also serves on the board of directors of the Issuer. As a result, the Reporting Persons other than Mr. Stafman may be deemed directors of the Issuer by deputization.

F5 · ownership.direct: Pursuant to an arrangement between Andrew J. Stafman and Sachem Head, upon receipt of the Subject Securities, Andrew J. Stafman granted all right, title, interest, claims, and any other ownership interests in such Subject Securities to Sachem Head for no consideration.

SEC source: 0001447669-26-000071 · wk-form4_1781728586.xml · nonDerivative · entry 1

Suzuki Miyuki · CIK 0001867852 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,829

F1 · shares: The shares reported in this transaction represent Restricted Stock Units ("RSUs"). Each RSU represents the contingent right to receive one share of the Issuer's Class A common stock. The RSUs vested immediately on the date of grant.

F2 · balance_after: Includes RSUs that have been deferred by the Reporting Person.

SEC source: 0001447669-26-000067 · wk-form4_1781728395.xml · nonDerivative · entry 1

Robinson Douglas A. · CIK 0001897137 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,887

F1 · shares: The shares reported in this transaction represent Restricted Stock Units ("RSUs"). Each RSU represents the contingent right to receive one share of the Issuer's Class A common stock. The RSUs vested immediately on the date of grant.

F2 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of Issuer's Class A common stock.

SEC source: 0001447669-26-000069 · wk-form4_1781728490.xml · nonDerivative · entry 3

ROTTENBERG ERIKA · CIK 0001284038 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 31,393

F4 · kind: Represents the shares received by the Reporting Person's trust.

F2 · balance_after: Includes RSUs that have been deferred by the Reporting Person.

F5 · ownership.nature: Shares are held by The Erika Rottenberg Revocable Trust.

SEC source: 0001447669-26-000069 · wk-form4_1781728490.xml · nonDerivative · entry 2

ROTTENBERG ERIKA · CIK 0001284038 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F3 · kind: Represents shares that were contributed by the Reporting Person to the Reporting Person's trust.

SEC source: 0001447669-26-000069 · wk-form4_1781728490.xml · nonDerivative · entry 1

ROTTENBERG ERIKA · CIK 0001284038 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 398

F1 · shares: The shares reported in this transaction represent Restricted Stock Units ("RSUs"). Each RSU represents the contingent right to receive one share of the Issuer's Class A common stock. The RSUs vested immediately on the date of grant.

F2 · balance_after: Includes RSUs that have been deferred by the Reporting Person.

SEC source: 0001447669-26-000063 · wk-form4_1781728193.xml · nonDerivative · entry 1

IMMELT JEFFREY R · CIK 0001233164 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,111

F1 · shares: The shares reported in this transaction represent Restricted Stock Units ("RSUs"). Each RSU represents the contingent right to receive one share of the Issuer's Class A common stock. The RSUs vested immediately on the date of grant.

SEC source: 0001447669-26-000061 · wk-form4_1781728144.xml · nonDerivative · entry 1

Epstein Jeff · CIK 0001228718 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,902

F1 · shares: The shares reported in this transaction represent Restricted Stock Units ("RSUs"). Each RSU represents the contingent right to receive one share of the Issuer's Class A common stock. The RSUs vested immediately on the date of grant.

F2 · balance_after: Includes RSUs that have been deferred by the Reporting Person.

SEC source: 0001447669-26-000059 · wk-form4_1781727981.xml · nonDerivative · entry 3

Dubinsky Donna · CIK 0001759316 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Shustek-Dubinsky Family Trust

Disclosed balance after: 22,361

F4 · kind: Represents the shares received by the Reporting Person's trust.

F2 · balance_after: Includes RSUs that have been deferred by the Reporting Person.

F5 · ownership.nature: Leonard Shustek & Donna Dubinsky, Trustees, Shustek-Dubinsky Family Trust Dated 8/1/04.

SEC source: 0001447669-26-000059 · wk-form4_1781727981.xml · nonDerivative · entry 2

Dubinsky Donna · CIK 0001759316 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F3 · kind: Represents shares that were contributed by the Reporting Person to the Reporting Person's trust.

SEC source: 0001447669-26-000059 · wk-form4_1781727981.xml · nonDerivative · entry 1

Dubinsky Donna · CIK 0001759316 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 391

F1 · shares: The shares reported in this transaction represent Restricted Stock Units ("RSUs"). Each RSU represents the contingent right to receive one share of the Issuer's Class A common stock. The RSUs vested immediately on the date of grant.

F2 · balance_after: Includes RSUs that have been deferred by the Reporting Person.

SEC source: 0001447669-26-000057 · wk-form4_1781727909.xml · nonDerivative · entry 1

Bell Charles H · CIK 0001971759 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,220

F1 · shares: The shares reported in this transaction represent Restricted Stock Units ("RSUs"). Each RSU represents the contingent right to receive one share of the Issuer's Class A common stock. The RSUs vested immediately on the date of grant.

F2 · balance_after: Includes RSUs that have been deferred by the Reporting Person.

SEC source: 0001737610-26-000012 · wk-form4_1780950732.xml · derivative · entry 3

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 44,158 shares

Expires 2030-02-21

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.

F1 · kind: The exercise reported was executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/18/2026.

F5 · derivative.exercise_date: The shares underlying the option are fully vested and exercisable.

SEC source: 0001737610-26-000012 · wk-form4_1780950732.xml · nonDerivative · entry 2

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 235,542

F3 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/18/2026.

F4 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $235.88 to $236.21 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F2 · balance_after: A portion of these shares represent Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of Issuer's Class A common stock.

SEC source: 0001737610-26-000012 · wk-form4_1780950732.xml · nonDerivative · entry 1

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 279,700

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: The exercise reported was executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/18/2026.

F2 · balance_after: A portion of these shares represent Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of Issuer's Class A common stock.

SEC source: 0001284038-26-000006 · wk-form4_1780518237.xml · nonDerivative · entry 1

ROTTENBERG ERIKA · CIK 0001284038 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 30,995

F1 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 12/10/2025.

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $199.00 to $199.075 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · ownership.nature: Shares are held by The Erika Rottenberg Revocable Trust.

SEC source: 0001104659-26-067095 · tm2615824-2_4seq1.xml · nonDerivative · entry 1

Stafman Andrew · CIK 0002018024 · Director

Ferguson Scott D. · CIK 0001658919 · See Footnotes

Sachem Head Capital Management LP · CIK 0001582090 · See Footnotes

Uncas GP LLC · CIK 0001658906 · See Footnotes

Sachem Head GP LLC · CIK 0001658917 · See Footnotes

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 620,000

F1 · ownership.nature: In addition to Andrew J. Stafman, this Form 4 is being filed jointly by Sachem Head Capital Management LP ("Sachem Head"), Uncas GP LLC ("SH Management"), Sachem Head GP LLC ("Sachem Head GP"), and Scott D. Ferguson, a citizen of the United States (Mr. Ferguson and, together with Sachem Head, SH Management, Sachem GP, and Mr. Stafman, the "Reporting Persons"). Each of the Reporting Persons has the same business address as Mr. Stafman and may be deemed to be the beneficial owner of certain of the securities reported on this Form 4 (the "Subject Securities") for purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934, as amended. Each of the Reporting Persons disclaims any beneficial ownership of any of the Subject Securities, except to the extent of any pecuniary interest therein.

F2 · ownership.nature: Includes securities directly owned by Sachem Head LP ("SH"), Sachem Head Master LP ("SHM"), and SH Stony Creek Master Ltd. ("Stony Creek Master" and, together with SH and SHM, the "Sachem Head Funds"). Each of Sachem Head, as the investment adviser to the Sachem Head Funds, SH Management, as the sole general partner of Sachem Head, and Scott D. Ferguson, as the managing partner of Sachem Head, may be deemed to beneficially own the securities directly owned by the Sachem Head Funds. As the general partner of SH and SHM, Sachem Head GP may be deemed to beneficially own the securities directly owned by SH and SHM.

F3 · ownership.nature: The principal business of Sachem Head is to serve as investment advisor to certain affiliated funds, including the Sachem Head Funds. The principal business of SH Management is to serve as the sole general partner of Sachem Head. The principal business of Sachem Head GP is to serve as the general partner of certain affiliated funds, including SH and SHM. The principal occupation of Scott D. Ferguson is to serve as the managing partner of Sachem Head and the managing member of SH Management and Sachem Head GP.

F4 · ownership.nature: Andrew J. Stafman is a partner at Sachem Head and also serves on the board of directors of the Issuer. As a result, the Reporting Persons other than Mr. Stafman may be deemed directors of the Issuer by deputization.

SEC source: 0001737610-26-000010 · wk-form4_1780000294.xml · derivative · entry 10

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,260

Underlying: Class A Common Stock · 32,158 shares

Expires 2028-10-31

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: The exercise reported was executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/18/2026.

F11 · derivative.exercise_date: The shares underlying the option are fully vested and exercisable.

SEC source: 0001737610-26-000010 · wk-form4_1780000294.xml · nonDerivative · entry 9

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 235,542

F3 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/18/2026.

F2 · balance_after: A portion of these shares represent Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001737610-26-000010 · wk-form4_1780000294.xml · nonDerivative · entry 8

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 240,011

F3 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/18/2026.

F10 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $186.94 to $187.62 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F2 · balance_after: A portion of these shares represent Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001737610-26-000010 · wk-form4_1780000294.xml · nonDerivative · entry 7

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 248,783

F3 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/18/2026.

F9 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $185.94 to $186.925 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F2 · balance_after: A portion of these shares represent Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001737610-26-000010 · wk-form4_1780000294.xml · nonDerivative · entry 6

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 253,502

F3 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/18/2026.

F8 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $184.815 to $185.80 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F2 · balance_after: A portion of these shares represent Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001737610-26-000010 · wk-form4_1780000294.xml · nonDerivative · entry 5

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 258,026

F3 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/18/2026.

F7 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $183.81 to $184.805 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F2 · balance_after: A portion of these shares represent Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001737610-26-000010 · wk-form4_1780000294.xml · nonDerivative · entry 4

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 262,012

F3 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/18/2026.

F6 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.465 to $183.40 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F2 · balance_after: A portion of these shares represent Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001737610-26-000010 · wk-form4_1780000294.xml · nonDerivative · entry 3

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 264,689

F3 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/18/2026.

F5 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $181.46 to $182.455 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F2 · balance_after: A portion of these shares represent Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001737610-26-000010 · wk-form4_1780000294.xml · nonDerivative · entry 2

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 266,773

F3 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/18/2026.

F4 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $180.36 to $181.31 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F2 · balance_after: A portion of these shares represent Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001737610-26-000010 · wk-form4_1780000294.xml · nonDerivative · entry 1

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 267,700

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: The exercise reported was executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/18/2026.

F2 · balance_after: A portion of these shares represent Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001965469-26-000011 · wk-form4_1779394915.xml · nonDerivative · entry 1

Viggiano Aidan · CIK 0001965469 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 127,345

F1 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 6/6/2025.

F2 · balance_after: A portion of these shares represent Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001447669-26-000051 · wk-form4_1779222067.xml · nonDerivative · entry 2

Viggiano Aidan · CIK 0001965469 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 129,173

F1 · shares: Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person.

F4 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $197.79 to $197.825 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

F5 · balance_after: Includes 208 shares acquired by the Reporting Person pursuant to the Issuer's 2016 Employee Stock Purchase Plan on May 15, 2026.

SEC source: 0001447669-26-000051 · wk-form4_1779222067.xml · nonDerivative · entry 1

Viggiano Aidan · CIK 0001965469 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 129,865

F1 · shares: Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell-to-cover" transaction and does not represent a discretionary sale by the Reporting Person.

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $196.50 to $197.4390 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001104659-26-059611 · tm2614447-2_4seq1.xml · nonDerivative · entry 1

Stafman Andrew · CIK 0002018024 · Director

Ferguson Scott D. · CIK 0001658919 · See Footnotes

Sachem Head Capital Management LP · CIK 0001582090 · See Footnotes

Uncas GP LLC · CIK 0001658906 · See Footnotes

Sachem Head GP LLC · CIK 0001658917 · See Footnotes

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 1,620,000

F1 · ownership.nature: In addition to Andrew J. Stafman, this Form 4 is being filed jointly by Sachem Head Capital Management LP ("Sachem Head"), Uncas GP LLC ("SH Management"), Sachem Head GP LLC ("Sachem Head GP"), and Scott D. Ferguson, a citizen of the United States (Mr. Ferguson and, together with Sachem Head, SH Management, Sachem GP, and Mr. Stafman, the "Reporting Persons"). Each of the Reporting Persons has the same business address as Mr. Stafman and may be deemed to be the beneficial owner of certain of the securities reported on this Form 4 (the "Subject Securities") for purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934, as amended. Each of the Reporting Persons disclaims any beneficial ownership of any of the Subject Securities, except to the extent of any pecuniary interest therein.

F2 · ownership.nature: Includes securities directly owned by Sachem Head LP ("SH"), Sachem Head Master LP ("SHM"), and SH Stony Creek Master Ltd. ("Stony Creek Master" and, together with SH and SHM, the "Sachem Head Funds"). Each of Sachem Head, as the investment adviser to the Sachem Head Funds, SH Management, as the sole general partner of Sachem Head, and Scott D. Ferguson, as the managing partner of Sachem Head, may be deemed to beneficially own the securities directly owned by the Sachem Head Funds. As the general partner of SH and SHM, Sachem Head GP may be deemed to beneficially own the securities directly owned by SH and SHM.

F3 · ownership.nature: The principal business of Sachem Head is to serve as investment advisor to certain affiliated funds, including the Sachem Head Funds. The principal business of SH Management is to serve as the sole general partner of Sachem Head. The principal business of Sachem Head GP is to serve as the general partner of certain affiliated funds, including SH and SHM. The principal occupation of Scott D. Ferguson is to serve as the managing partner of Sachem Head and the managing member of SH Management and Sachem Head GP.

F4 · ownership.nature: Andrew J. Stafman is a partner at Sachem Head and also serves on the board of directors of the Issuer. As a result, the Reporting Persons other than Mr. Stafman may be deemed directors of the Issuer by deputization.

SEC source: 0001284038-26-000004 · wk-form4_1778098906.xml · nonDerivative · entry 1

ROTTENBERG ERIKA · CIK 0001284038 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 32,995

F1 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 12/10/2025.

F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $185.235 to $185.49 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · ownership.nature: Shares are held by The Erika Rottenberg Revocable Trust.

SEC source: 0001447669-26-000037 · wk-form4_1776975884.xml · nonDerivative · entry 2

ROTTENBERG ERIKA · CIK 0001284038 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 34,495

F1 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 12/10/2025.

F2 · ownership.nature: Shares are held by The Erika Rottenberg Revocable Trust.

SEC source: 0001447669-26-000037 · wk-form4_1776975884.xml · nonDerivative · entry 1

ROTTENBERG ERIKA · CIK 0001284038 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 34,710

F1 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 12/10/2025.

F2 · ownership.nature: Shares are held by The Erika Rottenberg Revocable Trust.

SEC source: 0001447669-26-000035 · wk-form4_1775680031.xml · nonDerivative · entry 4

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 235,542

F1 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/24/2025.

F6 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $134.595 to $135.135 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.

SEC source: 0001447669-26-000035 · wk-form4_1775680031.xml · nonDerivative · entry 3

Shipchandler Khozema · CIK 0001737610 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 237,642

F1 · kind: The sales reported were executed under the Reporting Person's 10b5-1 trading plan, dated as of 2/24/2025.

F5 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $133.53 to $134.365 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to 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.

F3 · balance_after: A portion of these shares represent RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock.