Gall Matthew

SEC source: 0001193125-26-207094 · ownership.xml · derivative · entry 2

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 240,000

Underlying: Common Stock · 240,000 shares

Expires 2036-05-01

F2 · derivative.exercise_date: This option shall vest and become exercisable over a four-year period, at a rate of 25% on April 15, 2027 with the remaining option shares vesting in 36 equal monthly installments thereafter, subject to the Reporting Person's continuous service with the Issuer as of each such vesting date.

SEC source: 0001193125-26-207094 · ownership.xml · nonDerivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,000

F1 · shares: These shares are represented by restricted stock units (the "RSUs"). Each RSU represents a contingent right to receive one share of Common Stock of the Issuer. The RSUs shall vest over a three-year period at a rate of (i) 13,200 RSUs on or about May 10, 2027, (ii) 13,200 RSUs on or about May 10, 2028 and (iii) 13,600 RSUs on or about May 9, 2029, subject to the Reporting Person's continuous service with the Issuer as of each such vesting date.

SEC source: 0001193125-26-117617 · ownership.xml · derivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,000

Underlying: Common Stock · 95,000 shares

Expires 2036-03-18

F1 · derivative.exercise_date: The option was granted on March 19, 2026. The shares underlying the option are scheduled to vest over four years, with 25% of the shares underlying the option vesting on March 19, 2027, and the remainder vesting in equal monthly installments thereafter, subject to continuous service.

SEC source: 0001193125-25-262831 · ownership.xml · derivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 235,000

Underlying: Common Stock · 235,000 shares

Expires 2035-11-02

F1 · derivative.exercise_date: The option was granted on November 3, 2025. The shares underlying the option are scheduled to vest over four years, with 25% of the shares underlying the option vesting on November 3, 2026, and the remainder vesting in equal monthly installments thereafter, subject to continuous service.

SEC source: 0000950170-25-112236 · ownership.xml · derivative · entry 6

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 252,135 shares

Expires not disclosed

F5 · kind: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

F5 · price: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

F5 · derivative.exercise_date: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

F5 · derivative.expiration_date: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

SEC source: 0000950170-25-112236 · ownership.xml · derivative · entry 5

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 8,123 shares

Expires not disclosed

F5 · kind: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

F5 · price: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

F5 · derivative.exercise_date: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

F5 · derivative.expiration_date: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

SEC source: 0000950170-25-112236 · ownership.xml · derivative · entry 4

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 42,388 shares

Expires not disclosed

F5 · kind: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

F5 · price: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

F5 · derivative.exercise_date: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

F5 · derivative.expiration_date: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

SEC source: 0000950170-25-112236 · ownership.xml · derivative · entry 3

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 135,937 shares

Expires not disclosed

F4 · kind: Pursuant to the actions of the of the Committee and in accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each option to purchase Shares from the Company ("Company Stock Options," and each such option, a "Company Stock Option") that was then outstanding but not then vested or exercisable and that was held by a Company service provider who was subject to an individual employment or other agreement and/or a Company severance and change in control plan or agreement that provides for accelerated vesting of time-based equity awards upon the occurrence of a sale of the Company or a qualifying termination of employment or service in connection with, or within a specified time following, a sale of the Company became immediately vested and exercisable in full.

F4 · price: Pursuant to the actions of the of the Committee and in accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each option to purchase Shares from the Company ("Company Stock Options," and each such option, a "Company Stock Option") that was then outstanding but not then vested or exercisable and that was held by a Company service provider who was subject to an individual employment or other agreement and/or a Company severance and change in control plan or agreement that provides for accelerated vesting of time-based equity awards upon the occurrence of a sale of the Company or a qualifying termination of employment or service in connection with, or within a specified time following, a sale of the Company became immediately vested and exercisable in full.

F5 · price: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

F4 · derivative.exercise_date: Pursuant to the actions of the of the Committee and in accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each option to purchase Shares from the Company ("Company Stock Options," and each such option, a "Company Stock Option") that was then outstanding but not then vested or exercisable and that was held by a Company service provider who was subject to an individual employment or other agreement and/or a Company severance and change in control plan or agreement that provides for accelerated vesting of time-based equity awards upon the occurrence of a sale of the Company or a qualifying termination of employment or service in connection with, or within a specified time following, a sale of the Company became immediately vested and exercisable in full.

F5 · derivative.exercise_date: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

F4 · derivative.expiration_date: Pursuant to the actions of the of the Committee and in accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each option to purchase Shares from the Company ("Company Stock Options," and each such option, a "Company Stock Option") that was then outstanding but not then vested or exercisable and that was held by a Company service provider who was subject to an individual employment or other agreement and/or a Company severance and change in control plan or agreement that provides for accelerated vesting of time-based equity awards upon the occurrence of a sale of the Company or a qualifying termination of employment or service in connection with, or within a specified time following, a sale of the Company became immediately vested and exercisable in full.

F5 · derivative.expiration_date: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

SEC source: 0000950170-25-112236 · ownership.xml · derivative · entry 2

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 9,063 shares

Expires not disclosed

F4 · kind: Pursuant to the actions of the of the Committee and in accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each option to purchase Shares from the Company ("Company Stock Options," and each such option, a "Company Stock Option") that was then outstanding but not then vested or exercisable and that was held by a Company service provider who was subject to an individual employment or other agreement and/or a Company severance and change in control plan or agreement that provides for accelerated vesting of time-based equity awards upon the occurrence of a sale of the Company or a qualifying termination of employment or service in connection with, or within a specified time following, a sale of the Company became immediately vested and exercisable in full.

F4 · price: Pursuant to the actions of the of the Committee and in accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each option to purchase Shares from the Company ("Company Stock Options," and each such option, a "Company Stock Option") that was then outstanding but not then vested or exercisable and that was held by a Company service provider who was subject to an individual employment or other agreement and/or a Company severance and change in control plan or agreement that provides for accelerated vesting of time-based equity awards upon the occurrence of a sale of the Company or a qualifying termination of employment or service in connection with, or within a specified time following, a sale of the Company became immediately vested and exercisable in full.

F5 · price: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

F4 · derivative.exercise_date: Pursuant to the actions of the of the Committee and in accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each option to purchase Shares from the Company ("Company Stock Options," and each such option, a "Company Stock Option") that was then outstanding but not then vested or exercisable and that was held by a Company service provider who was subject to an individual employment or other agreement and/or a Company severance and change in control plan or agreement that provides for accelerated vesting of time-based equity awards upon the occurrence of a sale of the Company or a qualifying termination of employment or service in connection with, or within a specified time following, a sale of the Company became immediately vested and exercisable in full.

F5 · derivative.exercise_date: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

F4 · derivative.expiration_date: Pursuant to the actions of the of the Committee and in accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each option to purchase Shares from the Company ("Company Stock Options," and each such option, a "Company Stock Option") that was then outstanding but not then vested or exercisable and that was held by a Company service provider who was subject to an individual employment or other agreement and/or a Company severance and change in control plan or agreement that provides for accelerated vesting of time-based equity awards upon the occurrence of a sale of the Company or a qualifying termination of employment or service in connection with, or within a specified time following, a sale of the Company became immediately vested and exercisable in full.

F5 · derivative.expiration_date: In accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, each Company Stock Option that had an exercise price per share that is less than the Cash Amount (each, an "In-the-Money Option") that was then outstanding was canceled and, in exchange therefor, the holder of such canceled In-the-Money Option became entitled to receive in consideration of the cancellation of such In-the-Money Option (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the product obtained by multiplying (1) the excess of the Cash Amount over the exercise price per Share underlying such In-the-Money Option by (2) the number of Shares underlying such In-the-Money Option as of immediately prior to the Effective Time and (y) one CVR for each Share underlying such In-the-Money Option.

SEC source: 0000950170-25-112236 · ownership.xml · nonDerivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · kind: This Form 4 reports securities disposed of pursuant to the terms of the Agreement and Plan of Merger (the "Merger Agreement"), dated as of July 18, 2025, by and among iTeos Therapeutics, Inc. (the "Company"), Concentra Biosciences LLC ("Parent"), and Concentra Merger Sub VIII, Inc., a wholly-owned subsidiary of Parent ("Merger Sub"), pursuant to which Parent completed a tender offer for shares of common stock of the Company ("Shares") and thereafter, the Merger Sub merged with and into the Company (the "Merger"). At the effective time of the Merger (the "Effective Time"), each issued and outstanding Share was canceled and converted into the right to receive (i) $10.047 in cash per share (the "Cash Amount"); plus (ii) one non-transferable contractual contingent value right per share (each, a "CVR"), without interest and subject to applicable withholding of taxes.

F2 · kind: The amount reported in Column 4 includes 65,000 restricted stock units of the Company ("Company Restricted Stock Units," and each such restricted stock unit, a "Company Restricted Stock Unit"). Pursuant to the actions of the of the Compensation and Leadership Development Committee of the Board of Directors of the Company (the "Committee") and in accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, (A) each Company Restricted Stock Unit that was held by a Company service provider who was subject to an individual employment or other agreement and/or a Company severance and change in control plan or agreement that provides for accelerated vesting of time-based equity awards upon the occurrence of a sale of the Company or a qualifying termination of employment or service in connection with,

F3 · kind: (Continued from footnote 2) or within a specified time following, a sale of the Company (each such Company Restricted Stock Unit, an "Accelerated Vesting Restricted Stock Unit") that was then outstanding but not then vested became immediately vested in full and (B) each Accelerated Vesting Restricted Stock Unit that was then outstanding was canceled and, in exchange therefor, the holder of such canceled Company Restricted Stock Unit became entitled to receive in consideration of the cancellation of such Company Restricted Stock Unit (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the Cash Amount and (y) one CVR.

F1 · price: This Form 4 reports securities disposed of pursuant to the terms of the Agreement and Plan of Merger (the "Merger Agreement"), dated as of July 18, 2025, by and among iTeos Therapeutics, Inc. (the "Company"), Concentra Biosciences LLC ("Parent"), and Concentra Merger Sub VIII, Inc., a wholly-owned subsidiary of Parent ("Merger Sub"), pursuant to which Parent completed a tender offer for shares of common stock of the Company ("Shares") and thereafter, the Merger Sub merged with and into the Company (the "Merger"). At the effective time of the Merger (the "Effective Time"), each issued and outstanding Share was canceled and converted into the right to receive (i) $10.047 in cash per share (the "Cash Amount"); plus (ii) one non-transferable contractual contingent value right per share (each, a "CVR"), without interest and subject to applicable withholding of taxes.

F2 · price: The amount reported in Column 4 includes 65,000 restricted stock units of the Company ("Company Restricted Stock Units," and each such restricted stock unit, a "Company Restricted Stock Unit"). Pursuant to the actions of the of the Compensation and Leadership Development Committee of the Board of Directors of the Company (the "Committee") and in accordance with the terms of the Merger Agreement, at the Effective Time, by virtue of the Merger and without any action on the part of the holders, (A) each Company Restricted Stock Unit that was held by a Company service provider who was subject to an individual employment or other agreement and/or a Company severance and change in control plan or agreement that provides for accelerated vesting of time-based equity awards upon the occurrence of a sale of the Company or a qualifying termination of employment or service in connection with,

F3 · price: (Continued from footnote 2) or within a specified time following, a sale of the Company (each such Company Restricted Stock Unit, an "Accelerated Vesting Restricted Stock Unit") that was then outstanding but not then vested became immediately vested in full and (B) each Accelerated Vesting Restricted Stock Unit that was then outstanding was canceled and, in exchange therefor, the holder of such canceled Company Restricted Stock Unit became entitled to receive in consideration of the cancellation of such Company Restricted Stock Unit (x) an amount in cash without interest, subject to any applicable tax withholding, equal to the Cash Amount and (y) one CVR.

SEC source: 0000950170-25-037512 · ownership.xml · derivative · entry 2

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 145,000

Underlying: Common Stock · 145,000 shares

Expires 2035-03-07

F2 · derivative.exercise_date: This stock option shall vest over four years, with 25% vesting on March 7, 2026 and thereafter in equal monthly installments over the next 36 months, subject to the reporting person's continued service to the issuer.

SEC source: 0000950170-25-037512 · ownership.xml · nonDerivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,429

F1 · price: The reporting person was granted restricted stock units ("RSUs"). Each RSU represents the right to receive one share of common stock. The shares of common stock underlying the RSUs will vest over 4 years: 25% will vest on March 7, 2026 and the remainder will vest equally, on an annual basis, over the remaining 3 years, subject to the reporting person's continued service to the issuer.

SEC source: 0000950170-24-128956 · ownership.xml · nonDerivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,429

SEC source: 0000950170-24-028862 · ownership.xml · derivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 163,200

Underlying: Common Stock · 163,200 shares

Expires 2034-03-07

F1 · derivative.exercise_date: This stock option shall vest over four years, with 25% vesting on March 7, 2025 and thereafter in equal monthly installments over the next 36 months, subject to the reporting person's continued service to the Issuer.

SEC source: 0000950170-23-068901 · ownership.xml · nonDerivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,429

F1 · price: The Reporting Person was granted restricted stock units ("RSUs"). Each RSU represents the right to receive one share of common stock. All of the shares of common stock underlying such RSUs will vest on December 5, 2025, subject to the Reporting Person's continued service to the Issuer.

SEC source: 0001209191-23-052709 · doc4.xml · nonDerivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,429

SEC source: 0001209191-23-018015 · doc4.xml · derivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 130,000

Underlying: Common Stock · 130,000 shares

Expires 2033-03-09

F1 · derivative.exercise_date: This stock option shall vest over four years, with 25% vesting on March 9, 2024 and thereafter in equal monthly installments over the next 36 months, subject to the reporting person's continued service to the Issuer.

SEC source: 0001209191-22-018668 · doc4.xml · derivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,000

Underlying: Common Stock · 85,000 shares

Expires 2032-03-11

F1 · derivative.exercise_date: This stock option shall vest over 4 years, with 25% vesting on March 11, 2023 and thereafter in equal monthly installments over the next 36 months, subject to the Reporting Person's continued service to the Issuer.

SEC source: 0001209191-21-071435 · doc4.xml · nonDerivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,429

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.20 to $46.77, inclusive. The reporting person undertakes to provide to iTeos Therapeutics, Inc., any security holder of iTeos Therapeutics, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-21-060297 · doc4.xml · derivative · entry 2

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,388

Underlying: Common Stock · 14,429 shares

Expires 2030-06-18

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: This transaction involved a cash exercise of a stock option without a subsequent sale of the underlying shares of common stock.

F2 · derivative.exercise_date: One-fourth of the shares subject to the stock option vested on the one-year anniversary of the vesting commencement date. Thereafter, 1/48 of the shares subject to the stock option vest on a monthly basis following the one-year anniversary of the vesting commencement date, subject to the reporting person's continuous service relationship with the Issuer through each applicable vesting date.

SEC source: 0001209191-21-060297 · doc4.xml · nonDerivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,429

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: This transaction involved a cash exercise of a stock option without a subsequent sale of the underlying shares of common stock.

SEC source: 0000899243-21-026087 · doc4.xml · derivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,000

Underlying: Common Stock · 24,000 shares

Expires 2031-06-24

F1 · derivative.exercise_date: This stock option shall vest over 4 years, with 25% vesting on June 24, 2022 and thereafter in equal monthly installments over the next 36 months subject to the Reporting Person's continued service to the Issuer.

SEC source: 0000899243-21-024236 · doc4.xml · nonDerivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,000

F1 · price: The price reported in Column 4 is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $25.84 to $26.15. Full information regarding the number of shares purchased at each separate price can be furnished to the SEC staff upon request.

SEC source: 0000899243-21-009380 · doc4.xml · derivative · entry 1

Gall Matthew · CIK 0001816194 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 72,000

Underlying: Common Stock · 72,000 shares

Expires 2031-03-01

F1 · derivative.exercise_date: This stock option shall vest over 4 years, with 25% vesting on March 1, 2022 and thereafter in equal monthly installments over the next 36 months subject to the Reporting Person's continued service to the Issuer.