IRM

SEC source: 0001020569-25-000062 · wk-form4_1741139220.xml · nonDerivative · entry 4

Kidd Mark · CIK 0001732058 · EVP, GM Data Centers & ALM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,081

SEC source: 0001020569-25-000062 · wk-form4_1741139220.xml · nonDerivative · entry 3

Kidd Mark · CIK 0001732058 · EVP, GM Data Centers & ALM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,231

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.

F2 · shares: This acquisition is reported to reflect the full vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2022.

SEC source: 0001020569-25-000062 · wk-form4_1741139220.xml · nonDerivative · entry 2

Kidd Mark · CIK 0001732058 · EVP, GM Data Centers & ALM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,412

SEC source: 0001020569-25-000062 · wk-form4_1741139220.xml · nonDerivative · entry 1

Kidd Mark · CIK 0001732058 · EVP, GM Data Centers & ALM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 117,898

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 acquisition is reported to reflect the full vesting of performance units ("PUs") previously granted to the Reporting Person on March 1, 2022. Effective February 14, 2025, the Compensation Committee of Iron Mountain Incorporated's Board of Directors determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2025.

SEC source: 0001020569-25-000064 · wk-form4_1741139782.xml · derivative · entry 6

McIntosh Greg W · CIK 0001769841 · EVP, CCO & GM, Global RM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $.01 per share · 3,104 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.

F5 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F6 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 9,311 shares of Common Stock, were granted to the Reporting Person on March 1, 2022 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F6 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 9,311 shares of Common Stock, were granted to the Reporting Person on March 1, 2022 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-25-000064 · wk-form4_1741139782.xml · derivative · entry 5

McIntosh Greg W · CIK 0001769841 · EVP, CCO & GM, Global RM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $.01 per share · 97,769 shares

Expires not disclosed

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

F3 · derivative.exercise_price: Each PU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F4 · derivative.exercise_date: The PU were initially granted to the Reporting Person on March 1, 2022, and will fully vest on March 1, 2025.

F4 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2022, and will fully vest on March 1, 2025.

SEC source: 0001020569-25-000064 · wk-form4_1741139782.xml · nonDerivative · entry 4

McIntosh Greg W · CIK 0001769841 · EVP, CCO & GM, Global RM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,768

SEC source: 0001020569-25-000064 · wk-form4_1741139782.xml · nonDerivative · entry 3

McIntosh Greg W · CIK 0001769841 · EVP, CCO & GM, Global RM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,218

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.

F2 · shares: This acquisition is reported to reflect the full vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2022.

SEC source: 0001020569-25-000064 · wk-form4_1741139782.xml · nonDerivative · entry 2

McIntosh Greg W · CIK 0001769841 · EVP, CCO & GM, Global RM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,114

SEC source: 0001020569-25-000064 · wk-form4_1741139782.xml · nonDerivative · entry 1

McIntosh Greg W · CIK 0001769841 · EVP, CCO & GM, Global RM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 115,876

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 acquisition is reported to reflect the full vesting of performance units ("PUs") previously granted to the Reporting Person on March 1, 2022. Effective February 14, 2025, the Compensation Committee of Iron Mountain Incorporated's Board of Directors determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2025.

SEC source: 0001020569-25-000060 · wk-form4_1741138332.xml · derivative · entry 14

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,207

Underlying: Common Stock · 1,207 shares

Expires not disclosed

F7 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock.

F11 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 1,207 shares of Common Stock, were granted to the Reporting Person on March 1, 2025 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F11 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 1,207 shares of Common Stock, were granted to the Reporting Person on March 1, 2025 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-25-000060 · wk-form4_1741138332.xml · derivative · entry 13

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 926

Underlying: Common Stock · 462 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: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock.

F10 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 1,388 shares of Common Stock, were granted to the Reporting Person on March 1, 2024 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F10 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 1,388 shares of Common Stock, were granted to the Reporting Person on March 1, 2024 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-25-000060 · wk-form4_1741138332.xml · derivative · entry 12

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 713

Underlying: Common Stock · 713 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: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock.

F9 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 2,139 shares of Common Stock, were granted to the Reporting Person on March 1, 2023 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F9 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 2,139 shares of Common Stock, were granted to the Reporting Person on March 1, 2023 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-25-000060 · wk-form4_1741138332.xml · derivative · entry 11

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 649 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: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock.

F8 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 1,947 shares of Common Stock, were granted to the Reporting Person on March 1, 2022 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F8 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 1,947 shares of Common Stock, were granted to the Reporting Person on March 1, 2022 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-25-000060 · wk-form4_1741138332.xml · derivative · entry 10

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 8,330 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.

F5 · derivative.exercise_price: Each PU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F6 · derivative.exercise_date: The PUs were initially granted to the Reporting Person on March 1, 2022. Effective as of February 14, 2025, the Compensation Committee determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2025.

F6 · derivative.expiration_date: The PUs were initially granted to the Reporting Person on March 1, 2022. Effective as of February 14, 2025, the Compensation Committee determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2025.

SEC source: 0001020569-25-000060 · wk-form4_1741138332.xml · nonDerivative · entry 8

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 6,721

SEC source: 0001020569-25-000060 · wk-form4_1741138332.xml · nonDerivative · entry 7

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 6,895

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.

F4 · shares: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2024.

SEC source: 0001020569-25-000060 · wk-form4_1741138332.xml · nonDerivative · entry 6

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 6,433

SEC source: 0001020569-25-000060 · wk-form4_1741138332.xml · nonDerivative · entry 5

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 6,654

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: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2023.

SEC source: 0001020569-25-000060 · wk-form4_1741138332.xml · nonDerivative · entry 4

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,941

SEC source: 0001020569-25-000060 · wk-form4_1741138332.xml · nonDerivative · entry 3

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 6,142

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.

F2 · shares: This acquisition is reported to reflect the full vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2022.

SEC source: 0001020569-25-000060 · wk-form4_1741138332.xml · nonDerivative · entry 2

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,493

SEC source: 0001020569-25-000060 · wk-form4_1741138332.xml · nonDerivative · entry 1

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,330

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 acquisition is reported to reflect the full vesting of performance units ("PUs") previously granted to the Reporting Person on March 1, 2022. Effective February 14, 2025, the Compensation Committee of Iron Mountain Incorporated's Board of Directors determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2025.

SEC source: 0001020569-25-000058 · wk-form4_1741136296.xml · derivative · entry 5

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,264

Underlying: Common Stock · 8,264 shares

Expires not disclosed

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Common Stock.

F4 · derivative.exercise_date: The RSU, representing a contingent right to receive a total of 8,264 shares of Common Stock, were granted to the Reporting Person on March 1, 2025 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F4 · derivative.expiration_date: The RSU, representing a contingent right to receive a total of 8,264 shares of Common Stock, were granted to the Reporting Person on March 1, 2025 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-25-000058 · wk-form4_1741136296.xml · derivative · entry 4

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,663

Underlying: Common Stock · 2,662 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.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Common Stock.

F3 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 7,987 shares of Common Stock, were granted to the Reporting Person on March 1, 2023 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F3 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 7,987 shares of Common Stock, were granted to the Reporting Person on March 1, 2023 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-25-000058 · wk-form4_1741136296.xml · nonDerivative · entry 2

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,792

SEC source: 0001020569-25-000058 · wk-form4_1741136296.xml · nonDerivative · entry 1

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,716

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 acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2023.

SEC source: 0001020569-25-000056 · wk-form4_1741131906.xml · derivative · entry 6

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,033 shares

Expires not disclosed

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

F5 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Common Stock.

F6 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 15,099 shares of Common Stock, were granted to the Reporting Person on March 1, 2022 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F6 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 15,099 shares of Common Stock, were granted to the Reporting Person on March 1, 2022 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-25-000056 · wk-form4_1741131906.xml · derivative · entry 5

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $.01 per share · 158,543 shares

Expires not disclosed

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

F3 · derivative.exercise_price: Each PU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F4 · derivative.exercise_date: The PUs were initially granted to the Reporting Person on March 1, 2022. Effective as of February 14, 2025, the Compensation Committee determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2025.

F4 · derivative.expiration_date: The PUs were initially granted to the Reporting Person on March 1, 2022. Effective as of February 14, 2025, the Compensation Committee determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2025.

SEC source: 0001020569-25-000056 · wk-form4_1741131906.xml · nonDerivative · entry 4

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 198,518

SEC source: 0001020569-25-000056 · wk-form4_1741131906.xml · nonDerivative · entry 3

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 200,838

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.

F2 · acquired: This acquisition is reported to reflect the full vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2022.

SEC source: 0001020569-25-000056 · wk-form4_1741131906.xml · nonDerivative · entry 2

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 195,805

SEC source: 0001020569-25-000056 · wk-form4_1741131906.xml · nonDerivative · entry 1

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 268,910

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 · acquired: This acquisition is reported to reflect the full vesting of performance units ("PUs") previously granted to the Reporting Person on March 1, 2022. Effective February 14, 2025, the Compensation Committee of Iron Mountain Incorporated's Board of Directors determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2025.

SEC source: 0001020569-25-000054 · wk-form4_1741131828.xml · derivative · entry 10

Altamura Michelle Vervais · CIK 0002039171 · EVP, General Counsel, Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,219

Underlying: Common Stock · 3,219 shares

Expires not disclosed

F4 · derivative.exercise_price: Each restricted stock units ("RSUs") represents a contingent right to receive one share of Common Stock.

F8 · derivative.exercise_date: The RSU, representing a contingent right to receive a total of 3,219 shares of Common Stock, were granted to the Reporting Person on March 1, 2025 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F8 · derivative.expiration_date: The RSU, representing a contingent right to receive a total of 3,219 shares of Common Stock, were granted to the Reporting Person on March 1, 2025 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-25-000054 · wk-form4_1741131828.xml · derivative · entry 9

Altamura Michelle Vervais · CIK 0002039171 · EVP, General Counsel, Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 864

Underlying: Common Stock · 431 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.

F4 · derivative.exercise_price: Each restricted stock units ("RSUs") represents a contingent right to receive one share of Common Stock.

F7 · derivative.exercise_date: The RSU, representing a contingent right to receive a total of 1,295 shares of Common Stock, were granted to the Reporting Person on March 1, 2024 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F7 · derivative.expiration_date: The RSU, representing a contingent right to receive a total of 1,295 shares of Common Stock, were granted to the Reporting Person on March 1, 2024 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-25-000054 · wk-form4_1741131828.xml · derivative · entry 8

Altamura Michelle Vervais · CIK 0002039171 · EVP, General Counsel, Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,458

Underlying: Common Stock · 1,458 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.

F4 · derivative.exercise_price: Each restricted stock units ("RSUs") represents a contingent right to receive one share of Common Stock.

F6 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 4,374 shares of Common Stock, were granted to the Reporting Person on March 1, 2023 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F6 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 4,374 shares of Common Stock, were granted to the Reporting Person on March 1, 2023 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-25-000054 · wk-form4_1741131828.xml · derivative · entry 7

Altamura Michelle Vervais · CIK 0002039171 · EVP, General Counsel, Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,074 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.

F4 · derivative.exercise_price: Each restricted stock units ("RSUs") represents a contingent right to receive one share of Common Stock.

F5 · derivative.exercise_date: The RSU, representing a contingent right to receive a total of 3,221 shares of Common Stock, were granted to the Reporting Person on March 1, 2022 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F5 · derivative.expiration_date: The RSU, representing a contingent right to receive a total of 3,221 shares of Common Stock, were granted to the Reporting Person on March 1, 2022 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-25-000054 · wk-form4_1741131828.xml · nonDerivative · entry 6

Altamura Michelle Vervais · CIK 0002039171 · EVP, General Counsel, Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,007

SEC source: 0001020569-25-000054 · wk-form4_1741131828.xml · nonDerivative · entry 5

Altamura Michelle Vervais · CIK 0002039171 · EVP, General Counsel, Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,150

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: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2024.

SEC source: 0001020569-25-000054 · wk-form4_1741131828.xml · nonDerivative · entry 4

Altamura Michelle Vervais · CIK 0002039171 · EVP, General Counsel, Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,719

SEC source: 0001020569-25-000054 · wk-form4_1741131828.xml · nonDerivative · entry 3

Altamura Michelle Vervais · CIK 0002039171 · EVP, General Counsel, Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,205

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.

F2 · shares: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2023.

SEC source: 0001020569-25-000054 · wk-form4_1741131828.xml · nonDerivative · entry 2

Altamura Michelle Vervais · CIK 0002039171 · EVP, General Counsel, Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,747

SEC source: 0001020569-25-000054 · wk-form4_1741131828.xml · nonDerivative · entry 1

Altamura Michelle Vervais · CIK 0002039171 · EVP, General Counsel, Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,105

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 acquisition is reported to reflect the full vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2022.

SEC source: 0001020569-25-000047 · wk-form4_1739919078.xml · derivative · entry 1

McIntosh Greg W · CIK 0001769841 · EVP, CCO & GM, Global RM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,769

Underlying: Common Stock · 69,835 shares

Expires not disclosed

F1 · derivative.exercise_price: Each PU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F2 · shares: The PUs were initially granted to the Reporting Person on March 1, 2022. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 14, 2025, of the actual award of PUs under the grant after completion of the relevant performance period.

F3 · derivative.exercise_date: The PU were initially granted to the Reporting Person on March 1, 2022, and will fully vest on March 1, 2025.

F3 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2022, and will fully vest on March 1, 2025.

SEC source: 0001020569-25-000049 · wk-form4_1739919191.xml · derivative · entry 1

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 554,911

Underlying: Common Stock · 396,365 shares

Expires not disclosed

F1 · derivative.exercise_price: Each PU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F2 · shares: The PUs were initially granted to the Reporting Person on March 1, 2022. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 14, 2025, of the actual award of PUs under the grant after completion of the relevant performance period.

F3 · derivative.exercise_date: The PU were initially granted to the Reporting Person on March 1, 2022, and will fully vest on March 1, 2025.

F3 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2022, and will fully vest on March 1, 2025.

SEC source: 0001020569-25-000045 · wk-form4_1739919006.xml · derivative · entry 1

Kidd Mark · CIK 0001732058 · EVP, GM Data Centers & ALM

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,960

Underlying: Common Stock · 39,257 shares

Expires not disclosed

F1 · derivative.exercise_price: Each PU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F2 · shares: The PUs were initially granted to the Reporting Person on March 1, 2022. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 14, 2025, of the actual award of PUs under the grant after completion of the relevant performance period.

F3 · derivative.exercise_date: The PU were initially granted to the Reporting Person on March 1, 2022, and will fully vest on March 1, 2025.

F3 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2022, and will fully vest on March 1, 2025.

SEC source: 0001020569-25-000043 · wk-form4_1739918927.xml · derivative · entry 1

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 158,543

Underlying: Common Stock, par value $.01 per share · 113,245 shares

Expires not disclosed

F1 · derivative.exercise_price: Each PU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F2 · shares: The PUs were initially granted to the Reporting Person on March 1, 2022. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 14, 2025, of the actual award of PUs under the grant after completion of the relevant performance period.

F3 · derivative.exercise_date: The PU were initially granted to the Reporting Person on March 1, 2022, and will fully vest on March 1, 2025.

F3 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2022, and will fully vest on March 1, 2025.

SEC source: 0001020569-25-000041 · wk-form4_1739918821.xml · derivative · entry 1

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,330

Underlying: Common Stock · 5,950 shares

Expires not disclosed

F1 · derivative.exercise_price: Each PU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F2 · shares: The PUs were initially granted to the Reporting Person on March 1, 2022. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 14, 2025, of the actual award of PUs under the grant after completion of the relevant performance period.

F3 · derivative.exercise_date: The PU were initially granted to the Reporting Person on March 1, 2022, and will fully vest on March 1, 2025.

F3 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2022, and will fully vest on March 1, 2025.

SEC source: 0001020569-25-000031 · wk-form4_1738796353.xml · derivative · entry 8

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 691,250

Underlying: Common Stock · 69,125 shares

Expires 2026-02-18

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.

F7 · derivative.exercise_date: This stock option, representing a right to purchase a total of 829,506 shares, is fully vested.

SEC source: 0001020569-25-000031 · wk-form4_1738796353.xml · nonDerivative · entry 6

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

F5 · price: The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated common stock ("Common Stock") were sold in multiple transactions at prices ranging from $96.570 to $97.510, inclusive. The Reporting Person undertakes to provide Iron Mountain Incorporated (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (5).