Penn Mark Jeffery

SEC source: 0001104659-26-094266 · tm2622848-1_4seq1.xml · derivative · entry 7

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 150,000

Underlying: Class A Common Stock · 75,000 shares

Expires 2028-03-01

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 · shares: Represents the exercise of Stock Appreciation Rights ("SARs") and settlement for cash.

F4 · derivative.exercise_date: The SARs vested in equal installments on March 1, 2024, March 1, 2025 and March 1, 2026.

SEC source: 0001104659-26-094266 · tm2622848-1_4seq1.xml · derivative · entry 6

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,000,000

Underlying: Class A Common Stock · 500,000 shares

Expires 2026-12-14

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 · shares: Represents the exercise of Stock Appreciation Rights ("SARs") and settlement for cash.

F3 · derivative.exercise_date: The SARs vested in equal installments on December 14, 2022, December 14, 2023 and December 14, 2024.

SEC source: 0001104659-26-094266 · tm2622848-1_4seq1.xml · nonDerivative · entry 4

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,034,990

F1 · shares: Represents the exercise of Stock Appreciation Rights ("SARs") and settlement for cash.

SEC source: 0001104659-26-094266 · tm2622848-1_4seq1.xml · nonDerivative · entry 3

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,109,990

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 · shares: Represents the exercise of Stock Appreciation Rights ("SARs") and settlement for cash.

SEC source: 0001104659-26-094266 · tm2622848-1_4seq1.xml · nonDerivative · entry 2

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,034,990

F1 · shares: Represents the exercise of Stock Appreciation Rights ("SARs") and settlement for cash.

SEC source: 0001104659-26-094266 · tm2622848-1_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,534,990

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 · shares: Represents the exercise of Stock Appreciation Rights ("SARs") and settlement for cash.

SEC source: 0001104659-26-089928 · tm2622072-1_4seq1.xml · derivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,000,000

Underlying: Class A Common Stock · 2,000,000 shares

Expires 2031-08-01

F1 · security: Stock Appreciation Rights (SARs) granted August 1, 2026 to the reporting person vest and are exercisable in three installments with SARs in respect of 1,000,000 underlying shares of Class A Common Stock vesting on the first anniversary of the grant date, SARs in respect of 500,000 underlying shares of Class A Common Stock vesting on the second anniversary of the grant date, and SARs in respect of 500,000 underlying shares of Class A Common Stock vesting on the third anniversary of the grant date. The SARs expire on the fifth anniversary of the grant date and are settleable only for cash.

F1 · derivative.exercise_date: Stock Appreciation Rights (SARs) granted August 1, 2026 to the reporting person vest and are exercisable in three installments with SARs in respect of 1,000,000 underlying shares of Class A Common Stock vesting on the first anniversary of the grant date, SARs in respect of 500,000 underlying shares of Class A Common Stock vesting on the second anniversary of the grant date, and SARs in respect of 500,000 underlying shares of Class A Common Stock vesting on the third anniversary of the grant date. The SARs expire on the fifth anniversary of the grant date and are settleable only for cash.

SEC source: 0001104659-26-060252 · tm2614538-1_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,034,990

F1 · shares: The purchase price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.865 to $5.895, inclusive. The Reporting Person undertakes 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 purchased at each separate price within the range set forth in this footnote.

F1 · price: The purchase price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.865 to $5.895, inclusive. The Reporting Person undertakes 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 purchased at each separate price within the range set forth in this footnote.

SEC source: 0001104659-26-039654 · tm2610915-6_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,014,990

F1 · shares: Security represents restricted stock units awarded to the Reporting Person on April 1, 2026. Each restricted stock unit represents the right to receive one share of Class A common stock of the Issuer upon vesting. The restricted stock units will vest on April 1, 2027, subject to the Reporting Person's continued service through such date.

SEC source: 0001104659-26-027794 · tm268806-3_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,625,558

F1 · shares: Represents shares repurchased by the Issuer from the Reporting Person in connection with the Reporting Person's tax obligations resulting from the April 4, 2025 exchange by Stagwell Media LP of shares of Class C Common Stock of the Issuer, together with the corresponding interest in a subsidiary of the Issuer, for shares of Class A Common Stock (the "Exchange"). The shares repurchased are a portion of the shares distributed to the Reporting Person as a result of the Exchange.

F2 · price: Reflects a 1% discount to the closing price of the Class A Common Stock on the transaction date.

SEC source: 0001104659-26-025986 · tm268427-5_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,197,765

F1 · shares: Represents shares withheld by the issuer to satisfy tax withholding requirements on the nonreportable vesting of restricted stock units.

SEC source: 0001104659-26-024250 · tm268117-5_4seq1.xml · nonDerivative · entry 2

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,273,212

F2 · shares: Represents shares withheld by the issuer to satisfy tax withholding requirements on the nonreportable vesting of restricted stock.

SEC source: 0001104659-26-024250 · tm268117-5_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,502,741

F1 · shares: Represents shares of restricted stock forfeited to the issuer in connection with the partial vesting of a three-year financial performance-based restricted stock award.

SEC source: 0001104659-25-074348 · tm2521222-2_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,560,430

F1 · balance_after: Includes 22,296,375 shares previously reported as indirectly beneficially owned by the Reporting Person. These shares were held by The Stagwell Group LLC ("Stagwell Group"). As reported in Amendment No. 17 to the Schedule 13D filed by the Reporting Person on July 21, 2025, on July 17, 2025, Stagwell Group made a pro rata distribution of such shares to the Reporting Person as its sole member.

SEC source: 0001104659-25-051644 · tm2515837-1_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,014,055

SEC source: 0001104659-25-047881 · tm2514945-1_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,004,055

F1 · shares: The purchase price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.7266 to $4.7599, inclusive. The Reporting Person undertakes 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 purchased at each separate price within the range set forth in this footnote.

SEC source: 0001104659-25-036407 · tm2512727-3_4seq1.xml · nonDerivative · entry 2

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 22,296,375

F1 · kind: Distribution by The Stagwell Group LLC ("Stagwell Group") to certain of its members, on a pro rata basis for no consideration, of 6,811,332 shares of Class A Common Stock of the Issuer.

F2 · ownership.nature: Shares held by Stagwell Group. The Reporting Person is the controlling person of Stagwell Group.

F3 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001104659-25-033129 · tm2511875-1_4seq1.xml · nonDerivative · entry 2

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 29,107,707

F1 · kind: On April 4, 2025, Stagwell Media LP ("Stagwell Media") distributed to its partners, on a pro rata basis for no consideration, all of the 151,648,741 shares of Class A Common Stock of the Issuer that it held. In such distribution, 6,626,401 shares of Class A Common Stock were distributed to the Reporting Person, 28,977,707 shares of Class A Common Stock were distributed to The Stagwell Group LLC ("Stagwell Group") and the remaining 116,044,633 shares of Class A Common Stock were distributed to another partner.

F2 · ownership.nature: The Reporting Person is the controlling person of Stagwell Group and Stagwell Media. Prior to the reported transaction, Stagwell Group directly held 130,000 shares of Class A Common Stock, and Stagwell Media directly held 151,648,741 shares of Class A Common Stock. Following the reported transaction, Stagwell Group directly held 29,107,707 shares of Class A Common Stock, and Stagwell Media directly held zero shares of Class A Common Stock.

F3 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001104659-25-033129 · tm2511875-1_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,994,055

F1 · kind: On April 4, 2025, Stagwell Media LP ("Stagwell Media") distributed to its partners, on a pro rata basis for no consideration, all of the 151,648,741 shares of Class A Common Stock of the Issuer that it held. In such distribution, 6,626,401 shares of Class A Common Stock were distributed to the Reporting Person, 28,977,707 shares of Class A Common Stock were distributed to The Stagwell Group LLC ("Stagwell Group") and the remaining 116,044,633 shares of Class A Common Stock were distributed to another partner.

SEC source: 0001104659-25-031307 · tm2510911-5_4seq1.xml · derivative · entry 4

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Class A Common · 151,648,741 shares

Expires not disclosed

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

F7 · derivative.exercise_price: A holder of shares of Class C Common Stock may, at its option, exchange its shares of Class C Common Stock, together with its corresponding interest in a subsidiary of the Issuer (collectively, a "Paired Equity Interest"), for shares of Class A Common Stock on a one-for-one basis (i.e., one Paired Equity Interest for one share of Class A Common Stock).

F3 · shares: On April 2, 2025, Stagwell Media (as defined and discussed in footnote 4 hereto) exchanged all of its 151,648,741 Paired Equity Interests (as defined and discussed in footnote 7 hereto) for an equal number of shares of Class A Common Stock of the Issuer.

F8 · derivative.exercise_date: The right of a holder of shares of Class C Common Stock to exchange such shares for Class A Common Stock is not subject to a date exercisable or an expiration date.

F8 · derivative.expiration_date: The right of a holder of shares of Class C Common Stock to exchange such shares for Class A Common Stock is not subject to a date exercisable or an expiration date.

F4 · ownership.nature: The Reporting Person is the controlling person of Stagwell Media LP ("Stagwell Media"). Following the reported transaction, Stagwell Media holds directly 151,648,741 shares of Class A Common Stock and zero shares of Class C Common Stock.

F6 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001104659-25-031307 · tm2510911-5_4seq1.xml · nonDerivative · entry 3

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 151,778,741

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

F3 · shares: On April 2, 2025, Stagwell Media (as defined and discussed in footnote 4 hereto) exchanged all of its 151,648,741 Paired Equity Interests (as defined and discussed in footnote 7 hereto) for an equal number of shares of Class A Common Stock of the Issuer.

F3 · price: On April 2, 2025, Stagwell Media (as defined and discussed in footnote 4 hereto) exchanged all of its 151,648,741 Paired Equity Interests (as defined and discussed in footnote 7 hereto) for an equal number of shares of Class A Common Stock of the Issuer.

F4 · ownership.nature: The Reporting Person is the controlling person of Stagwell Media LP ("Stagwell Media"). Following the reported transaction, Stagwell Media holds directly 151,648,741 shares of Class A Common Stock and zero shares of Class C Common Stock.

F5 · ownership.nature: The Reporting Person is the controlling person of The Stagwell Group LLC ("Stagwell Group"). Stagwell Group holds directly 130,000 shares of Class A Common Stock of the Issuer.

F6 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001104659-25-031307 · tm2510911-5_4seq1.xml · nonDerivative · entry 2

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,367,654

F2 · shares: Represents shares withheld by the Issuer to satisfy tax withholding requirements on the nonreportable vesting of restricted stock.

SEC source: 0001104659-25-031307 · tm2510911-5_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,559,008

F1 · shares: Represents shares of restricted stock forfeited to the Issuer in connection with the partial vesting of a restricted stock award.

SEC source: 0001104659-25-022636 · tm258837-2_4seq1.xml · nonDerivative · entry 2

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,665,754

F2 · shares: Represents shares withheld by the issuer to satisfy tax withholding requirements on the nonreportable vesting of restricted stock units.

SEC source: 0001104659-25-022636 · tm258837-2_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,720,571

F1 · shares: The security represents restricted stock units awarded to the Reporting Person on March 7, 2025. Each restricted stock unit represents the right to receive one share of Class A common stock of the Issuer upon vesting. The restricted stock units will vest on March 7, 2026, subject to the Reporting Person's continued service through such date.

SEC source: 0001104659-24-042703 · tm2410581-6_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,528,838

F1 · shares: Represents shares withheld by the issuer to satisfy tax withholding requirements on the nonreportable vesting of restricted stock.

SEC source: 0001104659-24-033592 · tm248662-6_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,690,960

F1 · security: The security represents restricted stock units awarded to the Reporting Person on March 8, 2024. Each restricted stock unit represents the right to receive one share of Class A common stock of the Issuer upon vesting. The restricted stock units will vest on March 8, 2025, subject to the Reporting Person's continued service through such date.

F1 · shares: The security represents restricted stock units awarded to the Reporting Person on March 8, 2024. Each restricted stock unit represents the right to receive one share of Class A common stock of the Issuer upon vesting. The restricted stock units will vest on March 8, 2025, subject to the Reporting Person's continued service through such date.

SEC source: 0001104659-24-029494 · tm247678-1_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,490,469

F1 · shares: The purchase price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.265 to $5.28, inclusive. The Reporting Person undertakes 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 purchased at each separate price within the range set forth in this footnote.

F1 · price: The purchase price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.265 to $5.28, inclusive. The Reporting Person undertakes 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 purchased at each separate price within the range set forth in this footnote.

SEC source: 0001104659-24-028879 · tm247555-2_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,480,469

SEC source: 0001104659-24-028330 · tm247421-5_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,470,469

F1 · shares: Represents shares withheld by the issuer to satisfy tax withholding requirements on the nonreportable vesting of restricted stock.

SEC source: 0001104659-24-005953 · tm243839-1_4seq1.xml · derivative · entry 4

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 500,000 shares

Expires 2024-03-18

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 · shares: Represents the exercise of Stock Appreciation Rights ("SARs") and settlement in cash.

F3 · derivative.exercise_date: The SARs vested in equal installments on March 18, 2020, March 18, 2021 and March 18, 2022.

SEC source: 0001104659-24-005953 · tm243839-1_4seq1.xml · nonDerivative · entry 2

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,540,493

F1 · shares: Represents the exercise of Stock Appreciation Rights ("SARs") and settlement in cash.

SEC source: 0001104659-24-005953 · tm243839-1_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,040,493

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 · shares: Represents the exercise of Stock Appreciation Rights ("SARs") and settlement in cash.

SEC source: 0001104659-23-124800 · tm2332518-1_4seq1.xml · derivative · entry 4

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 500,000

Underlying: Class A Common Stock · 500,000 shares

Expires 2024-03-18

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 · shares: Represents the exercise of Stock Appreciation Rights ("SARs") and settlement in cash.

F3 · derivative.exercise_date: The SARs vested in equal installments on March 18, 2020, March 18, 2021 and March 18, 2022.

SEC source: 0001104659-23-124800 · tm2332518-1_4seq1.xml · nonDerivative · entry 2

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,540,493

F1 · shares: Represents the exercise of Stock Appreciation Rights ("SARs") and settlement in cash.

SEC source: 0001104659-23-124800 · tm2332518-1_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,040,493

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 · shares: Represents the exercise of Stock Appreciation Rights ("SARs") and settlement in cash.

SEC source: 0001104659-23-082818 · tm2321788-1_4seq1.xml · derivative · entry 5

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,000,000

Underlying: Class A Common Stock · 500,000 shares

Expires 2024-03-18

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 · shares: Represents the exercise of Stock Appreciation Rights (SARs) and settlement in shares of Class A Common Stock.

F4 · derivative.exercise_date: The SARs vested in equal installments on March 18, 2020, March 18, 2021 and March 18, 2022.

SEC source: 0001104659-23-082818 · tm2321788-1_4seq1.xml · nonDerivative · entry 3

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,540,493

F2 · shares: Represents shares withheld by the issuer to satisfy tax withholding requirements on the reported exercise and settlement of SARs.

SEC source: 0001104659-23-082818 · tm2321788-1_4seq1.xml · nonDerivative · entry 2

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,684,224

F1 · shares: Represents the exercise of Stock Appreciation Rights (SARs) and settlement in shares of Class A Common Stock.

SEC source: 0001104659-23-082818 · tm2321788-1_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,817,924

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 · shares: Represents the exercise of Stock Appreciation Rights (SARs) and settlement in shares of Class A Common Stock.

SEC source: 0001104659-24-013467 · tm245550-1_5seq1.xml · nonDerivative · entry 3

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 130,000

F5 · kind: On May 15, 2023, Agency Holdings distributed 14,067,837 shares of Class A Common Stock of the Issuer to certain limited partners of Stagwell Media for no consideration. Following such distribution, Agency Holdings directly held zero shares of Class A Common Stock of the Issuer.

F2 · ownership.nature: The Reporting Person is the controlling person of The Stagwell Group LLC ("Stagwell Group"). Stagwell Group is the general partner and manager of Stagwell Media and is the manager of Stagwell Agency Holdings LLC ("Agency Holdings"), which is a subsidiary of Stagwell Media. As of December 31, 2023, Stagwell Group directly held 130,000 shares of Class A Common Stock of the Issuer, and each of Stagwell Media and Agency Holdings directly held zero shares of Class A Common Stock of the Issuer.

F3 · ownership.nature: Amounts reported in rows 1 and 2 of column 5 also reflect (i) the aggregate of 9,260,317 shares of Class A Common Stock of the Issuer acquired by Stagwell Media upon the exchange of an equal number of Paired Equity Interests and distributed on May 10, 2023 to certain limited partners of Stagwell Media for no consideration, as discussed in footnote 1 hereto, and (ii) the aggregate of 14,067,837 shares of Class A Common Stock of the Issuer distributed on May 15, 2023 to certain limited partners of Stagwell Media by Agency Holdings for no consideration, as discussed in footnote 5 hereto.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001104659-24-013467 · tm245550-1_5seq1.xml · derivative · entry 5

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 151,648,741

Underlying: Class A Common Stock · 9,260,317 shares

Expires not disclosed

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

F1 · derivative.exercise_price: On May 10, 2023, Stagwell Media LP ("Stagwell Media") exchanged 9,260,317 Paired Equity Interests (as defined and discussed in footnote 6 hereto) for an equal number of shares of Class A Common Stock of the Issuer and distributed such shares to certain of its limited partners for no consideration. Following such distribution, Stagwell Media directly held zero shares of Class A Common Stock of the Issuer.

F6 · derivative.exercise_price: Held by Stagwell Media. The shares of Class C Common Stock are voting-only shares that have no economic interest in the Issuer and are not registered or listed shares. The holder of Class C Common Stock may, at its option, exchange its Class C Common Stock, together with its corresponding economic interest in a wholly-owned subsidiary of the Issuer (collectively, a "Paired Equity Interest"), for shares of Class A Common Stock on a one-for-one basis (i.e., one Paired Equity Interest for one share of Class A Common Stock).

F6 · derivative.exercise_date: Held by Stagwell Media. The shares of Class C Common Stock are voting-only shares that have no economic interest in the Issuer and are not registered or listed shares. The holder of Class C Common Stock may, at its option, exchange its Class C Common Stock, together with its corresponding economic interest in a wholly-owned subsidiary of the Issuer (collectively, a "Paired Equity Interest"), for shares of Class A Common Stock on a one-for-one basis (i.e., one Paired Equity Interest for one share of Class A Common Stock).

F7 · derivative.exercise_date: The right of any holder of the Class C Common Stock to exchange such shares for Class A Common Stock is not subject to an expiration date.

F7 · derivative.expiration_date: The right of any holder of the Class C Common Stock to exchange such shares for Class A Common Stock is not subject to an expiration date.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F6 · ownership.nature: Held by Stagwell Media. The shares of Class C Common Stock are voting-only shares that have no economic interest in the Issuer and are not registered or listed shares. The holder of Class C Common Stock may, at its option, exchange its Class C Common Stock, together with its corresponding economic interest in a wholly-owned subsidiary of the Issuer (collectively, a "Paired Equity Interest"), for shares of Class A Common Stock on a one-for-one basis (i.e., one Paired Equity Interest for one share of Class A Common Stock).

SEC source: 0001104659-24-013467 · tm245550-1_5seq1.xml · nonDerivative · entry 2

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 14,197,837

F1 · kind: On May 10, 2023, Stagwell Media LP ("Stagwell Media") exchanged 9,260,317 Paired Equity Interests (as defined and discussed in footnote 6 hereto) for an equal number of shares of Class A Common Stock of the Issuer and distributed such shares to certain of its limited partners for no consideration. Following such distribution, Stagwell Media directly held zero shares of Class A Common Stock of the Issuer.

F2 · ownership.nature: The Reporting Person is the controlling person of The Stagwell Group LLC ("Stagwell Group"). Stagwell Group is the general partner and manager of Stagwell Media and is the manager of Stagwell Agency Holdings LLC ("Agency Holdings"), which is a subsidiary of Stagwell Media. As of December 31, 2023, Stagwell Group directly held 130,000 shares of Class A Common Stock of the Issuer, and each of Stagwell Media and Agency Holdings directly held zero shares of Class A Common Stock of the Issuer.

F3 · ownership.nature: Amounts reported in rows 1 and 2 of column 5 also reflect (i) the aggregate of 9,260,317 shares of Class A Common Stock of the Issuer acquired by Stagwell Media upon the exchange of an equal number of Paired Equity Interests and distributed on May 10, 2023 to certain limited partners of Stagwell Media for no consideration, as discussed in footnote 1 hereto, and (ii) the aggregate of 14,067,837 shares of Class A Common Stock of the Issuer distributed on May 15, 2023 to certain limited partners of Stagwell Media by Agency Holdings for no consideration, as discussed in footnote 5 hereto.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001104659-24-013467 · tm245550-1_5seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 23,458,154

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: On May 10, 2023, Stagwell Media LP ("Stagwell Media") exchanged 9,260,317 Paired Equity Interests (as defined and discussed in footnote 6 hereto) for an equal number of shares of Class A Common Stock of the Issuer and distributed such shares to certain of its limited partners for no consideration. Following such distribution, Stagwell Media directly held zero shares of Class A Common Stock of the Issuer.

F2 · ownership.nature: The Reporting Person is the controlling person of The Stagwell Group LLC ("Stagwell Group"). Stagwell Group is the general partner and manager of Stagwell Media and is the manager of Stagwell Agency Holdings LLC ("Agency Holdings"), which is a subsidiary of Stagwell Media. As of December 31, 2023, Stagwell Group directly held 130,000 shares of Class A Common Stock of the Issuer, and each of Stagwell Media and Agency Holdings directly held zero shares of Class A Common Stock of the Issuer.

F3 · ownership.nature: Amounts reported in rows 1 and 2 of column 5 also reflect (i) the aggregate of 9,260,317 shares of Class A Common Stock of the Issuer acquired by Stagwell Media upon the exchange of an equal number of Paired Equity Interests and distributed on May 10, 2023 to certain limited partners of Stagwell Media for no consideration, as discussed in footnote 1 hereto, and (ii) the aggregate of 14,067,837 shares of Class A Common Stock of the Issuer distributed on May 15, 2023 to certain limited partners of Stagwell Media by Agency Holdings for no consideration, as discussed in footnote 5 hereto.

F4 · ownership.nature: The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001104659-23-035617 · tm2310293-1_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 14,197,837

F1 · price: The reported securities were sold by Stagwell Agency Holdings LLC pursuant to the exercise in part of the option to purchase additional shares of Class A Common Stock of the Issuer granted to the underwriter in an underwritten public offering (the "Secondary Offering"). This amount represents the $6.75 secondary public offering price per share of Class A Common Stock of the Issuer, less the underwriting discount of $0.320625 per share sold in the Secondary Offering.

F2 · ownership.nature: The Reporting Person is the controlling person of The Stagwell Group LLC ("Stagwell Group"). Stagwell Group directly holds 130,000 shares of Class A Common Stock of the Issuer. Stagwell Group is the manager of Stagwell Agency Holdings LLC, which directly holds 14,067,837 shares of Class A Common Stock of the Issuer following the reported transaction. The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001104659-23-032289 · tm239523-2_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 14,502,414

F1 · price: The reported securities were sold by Stagwell Agency Holdings LLC in an underwritten public offering (the "Secondary Offering"). This amount represents the $6.75 secondary public offering price per share of Class A Common Stock of the Issuer, less the underwriting discount of $0.320625 per share sold in the Secondary Offering.

F2 · ownership.nature: The Reporting Person is the controlling person of The Stagwell Group LLC ("Stagwell Group"). Stagwell Group directly holds 130,000 shares of Class A Common Stock of the Issuer. Stagwell Group is the manager of Stagwell Agency Holdings LLC, which directly holds 14,372,414 shares of Class A Common Stock of the Issuer following the reported transaction. The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001104659-23-028098 · tm238359-3_4seq1.xml · derivative · entry 3

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 225,000

Underlying: Class A Common Stock · 225,000 shares

Expires 2028-03-01

F3 · security: Stock Appreciation Rights (SARS) granted March 1, 2023 to the Reporting Person vest and are exercisable in three equal installments (each consisting of 75,000 underlying shares of Class A Common Stock) on each of the first three (3) anniversaries of the grant date, and expire on the fifth anniversary of the grant date.

F3 · derivative.exercise_date: Stock Appreciation Rights (SARS) granted March 1, 2023 to the Reporting Person vest and are exercisable in three equal installments (each consisting of 75,000 underlying shares of Class A Common Stock) on each of the first three (3) anniversaries of the grant date, and expire on the fifth anniversary of the grant date.

SEC source: 0001104659-23-028098 · tm238359-3_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,317,924

F1 · shares: Represents shares withheld by the issuer to satisfy tax withholding requirements on the nonreportable vesting of restricted stock.

SEC source: 0001104659-23-026197 · tm237946-6_4seq1.xml · nonDerivative · entry 2

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,381,579

F2 · shares: Represents restricted shares of Class A Common Stock of the issuer awarded to the Reporting Person on February 23, 2023. The restricted shares will vest on March 31, 2026, subject to the achievement of Company financial performance targets and the Reporting Person's continued service through such date.

SEC source: 0001104659-23-026197 · tm237946-6_4seq1.xml · nonDerivative · entry 1

Penn Mark Jeffery · CIK 0001771735 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,740,591

F1 · shares: Represents restricted shares of Class A Common Stock of the issuer awarded to the Reporting Person on February 23, 2023. The restricted shares will vest on February 23, 2024, subject to the Reporting Person's continued service through such date.