IRM

SEC source: 0001020569-24-000064 · wk-form4_1709678164.xml · derivative · entry 10

Baker-Greene Edward · CIK 0001645452 · EVP, CHRO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,671 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 ("Common Stock").

F8 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 11,013 shares of Common Stock, were granted to the Reporting Person on March 1, 2021 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 11,013 shares of Common Stock, were granted to the Reporting Person on March 1, 2021 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-24-000064 · wk-form4_1709678164.xml · derivative · entry 9

Baker-Greene Edward · CIK 0001645452 · EVP, CHRO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 22,666 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, 2021. Effective February 22, 2024, 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, 2024.

F6 · derivative.expiration_date: The PUs were initially granted to the Reporting Person on March 1, 2021. Effective February 22, 2024, 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, 2024.

SEC source: 0001020569-24-000064 · wk-form4_1709678164.xml · nonDerivative · entry 8

Baker-Greene Edward · CIK 0001645452 · EVP, CHRO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 21,562

SEC source: 0001020569-24-000064 · wk-form4_1709678164.xml · nonDerivative · entry 7

Baker-Greene Edward · CIK 0001645452 · EVP, CHRO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 22,357

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, 2023.

SEC source: 0001020569-24-000064 · wk-form4_1709678164.xml · nonDerivative · entry 6

Baker-Greene Edward · CIK 0001645452 · EVP, CHRO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,456

SEC source: 0001020569-24-000064 · wk-form4_1709678164.xml · nonDerivative · entry 5

Baker-Greene Edward · CIK 0001645452 · EVP, CHRO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 21,298

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, 2022.

SEC source: 0001020569-24-000064 · wk-form4_1709678164.xml · nonDerivative · entry 4

Baker-Greene Edward · CIK 0001645452 · EVP, CHRO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 19,285

SEC source: 0001020569-24-000064 · wk-form4_1709678164.xml · nonDerivative · entry 3

Baker-Greene Edward · CIK 0001645452 · EVP, CHRO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,821

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, 2021.

SEC source: 0001020569-24-000064 · wk-form4_1709678164.xml · nonDerivative · entry 2

Baker-Greene Edward · CIK 0001645452 · EVP, CHRO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,150

SEC source: 0001020569-24-000064 · wk-form4_1709678164.xml · nonDerivative · entry 1

Baker-Greene Edward · CIK 0001645452 · EVP, CHRO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 26,031

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, 2021. Effective February 22, 2024, the Compensation Committee of Iron Mountain Incorporated's Board of Directors (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, 2024.

SEC source: 0001020569-24-000066 · wk-form4_1709678342.xml · derivative · entry 9

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,819

Underlying: Common Stock · 2,818 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.

F6 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F8 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 8,455 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 8,455 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: 0001020569-24-000066 · wk-form4_1709678342.xml · derivative · entry 8

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,063 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.

F6 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F7 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 15,188 shares of Common Stock, were granted to the Reporting Person on March 1, 2021 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F7 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 15,188 shares of Common Stock, were granted to the Reporting Person on March 1, 2021 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-24-000066 · wk-form4_1709678342.xml · derivative · entry 7

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 25,334 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 PU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F5 · derivative.exercise_date: The PUs were initially granted to the Reporting Person on March 1, 2021. Effective February 22, 2024, 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, 2024.

F5 · derivative.expiration_date: The PUs were initially granted to the Reporting Person on March 1, 2021. Effective February 22, 2024, 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, 2024.

SEC source: 0001020569-24-000066 · wk-form4_1709678342.xml · nonDerivative · entry 6

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 62,938

SEC source: 0001020569-24-000066 · wk-form4_1709678342.xml · nonDerivative · entry 5

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 64,187

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, 2022.

SEC source: 0001020569-24-000066 · wk-form4_1709678342.xml · nonDerivative · entry 4

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 61,369

SEC source: 0001020569-24-000066 · wk-form4_1709678342.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 63,614

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, 2021.

SEC source: 0001020569-24-000066 · wk-form4_1709678342.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 58,551

SEC source: 0001020569-24-000066 · wk-form4_1709678342.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 68,073

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

F1 · shares: This acquisition is reported to reflect the full vesting of performance units ("PUs") previously granted to the Reporting Person on March 1, 2021. Effective February 22, 2024, the Compensation Committee of Iron Mountain Incorporated's Board of Directors (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, 2024.

SEC source: 0001020569-24-000062 · wk-form4_1709677998.xml · derivative · entry 13

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,388

Underlying: Common Stock · 1,388 shares

Expires not disclosed

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

F11 · derivative.exercise_date: The RSUs vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F11 · derivative.expiration_date: The RSUs vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-24-000062 · wk-form4_1709677998.xml · derivative · entry 12

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,426

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 ("Common Stock").

F10 · 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.

F10 · 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: 0001020569-24-000062 · wk-form4_1709677998.xml · derivative · entry 11

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 649

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 ("Common Stock").

F9 · 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.

F9 · 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: 0001020569-24-000062 · wk-form4_1709677998.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 · 821 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 ("Common Stock").

F8 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 2,461, were granted to the Reporting Person on March 1, 2021 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 2,461, were granted to the Reporting Person on March 1, 2021 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-24-000062 · wk-form4_1709677998.xml · derivative · entry 9

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,999 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, 2021. Effective February 22, 2024, 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, 2024.

F6 · derivative.expiration_date: The PUs were initially granted to the Reporting Person on March 1, 2021. Effective February 22, 2024, 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, 2024.

SEC source: 0001020569-24-000062 · wk-form4_1709677998.xml · nonDerivative · entry 8

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,091

SEC source: 0001020569-24-000062 · wk-form4_1709677998.xml · nonDerivative · entry 7

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,312

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, 2023.

SEC source: 0001020569-24-000062 · wk-form4_1709677998.xml · nonDerivative · entry 6

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,599

SEC source: 0001020569-24-000062 · wk-form4_1709677998.xml · nonDerivative · entry 5

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,800

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, 2022.

SEC source: 0001020569-24-000062 · wk-form4_1709677998.xml · nonDerivative · entry 4

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,151

SEC source: 0001020569-24-000062 · wk-form4_1709677998.xml · nonDerivative · entry 3

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,424

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, 2021.

SEC source: 0001020569-24-000062 · wk-form4_1709677998.xml · nonDerivative · entry 2

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,603

SEC source: 0001020569-24-000062 · wk-form4_1709677998.xml · nonDerivative · entry 1

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,999

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, 2021. Effective February 22, 2024, the Compensation Committee of Iron Mountain Incorporated's Board of Directors (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, 2024.

SEC source: 0001020569-24-000060 · wk-form4_1709677611.xml · derivative · entry 9

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,033

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.

F6 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F8 · 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.

F8 · 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: 0001020569-24-000060 · wk-form4_1709677611.xml · derivative · entry 8

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 10,894 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.

F6 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F7 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 32,680, were granted to the Reporting Person on March 1, 2021 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F7 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 32,680, were granted to the Reporting Person on March 1, 2021 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001020569-24-000060 · wk-form4_1709677611.xml · derivative · entry 7

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 53,335 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 PU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F5 · derivative.exercise_date: The PUs were initially granted to the Reporting Person on March 1, 2021. Effective February 22, 2024, 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, 2024.

F5 · derivative.expiration_date: The PUs were initially granted to the Reporting Person on March 1, 2021. Effective February 22, 2024, 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, 2024.

SEC source: 0001020569-24-000060 · wk-form4_1709677611.xml · nonDerivative · entry 6

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 119,367

SEC source: 0001020569-24-000060 · wk-form4_1709677611.xml · nonDerivative · entry 5

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 121,687

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, 2022.

SEC source: 0001020569-24-000060 · wk-form4_1709677611.xml · nonDerivative · entry 4

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 116,654

SEC source: 0001020569-24-000060 · wk-form4_1709677611.xml · nonDerivative · entry 3

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 121,676

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, 2021.

SEC source: 0001020569-24-000060 · wk-form4_1709677611.xml · nonDerivative · entry 2

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 110,782

SEC source: 0001020569-24-000060 · wk-form4_1709677611.xml · nonDerivative · entry 1

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 133,532

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, 2021. Effective February 22, 2024, the Compensation Committee of Iron Mountain Incorporated's Board of Directors (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, 2024.

SEC source: 0001020569-24-000058 · wk-form4_1709074443.xml · nonDerivative · entry 1

Baker-Greene Edward · CIK 0001645452 · EVP, CHRO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,365

SEC source: 0001020569-24-000050 · wk-form4_1708988790.xml · derivative · entry 1

MARSON DEBORAH · CIK 0001691591 · EVP, General Counsel, Sec.

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 26,667

Underlying: Common Stock · 10,831 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, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

F3 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2021, and will fully vest on March 1, 2024.

F2 · balance_after: The PUs were initially granted to the Reporting Person on March 1, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

SEC source: 0001020569-24-000056 · wk-form4_1708989431.xml · derivative · entry 1

Tomovcsik John · CIK 0001595956 · EVP, Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 40,001

Underlying: Common Stock · 16,247 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, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

F3 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2021, and will fully vest on March 1, 2024.

F2 · balance_after: The PUs were initially granted to the Reporting Person on March 1, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

SEC source: 0001020569-24-000054 · wk-form4_1708989321.xml · derivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 382,451

Underlying: Common Stock · 155,342 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, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

F3 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2021, and will fully vest on March 1, 2024.

F2 · balance_after: The PUs were initially granted to the Reporting Person on March 1, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

SEC source: 0001020569-24-000052 · wk-form4_1708989188.xml · derivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 21,334

Underlying: Common Stock · 8,665 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, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

F3 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2021, and will fully vest on March 1, 2024.

F2 · balance_after: The PUs were initially granted to the Reporting Person on March 1, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

SEC source: 0001020569-24-000048 · wk-form4_1708988669.xml · derivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 25,334

Underlying: Common Stock · 10,290 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, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

F3 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2021, and will fully vest on March 1, 2024.

F2 · balance_after: The PUs were initially granted to the Reporting Person on March 1, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

SEC source: 0001020569-24-000044 · wk-form4_1708988199.xml · derivative · entry 1

Baker-Greene Edward · CIK 0001645452 · EVP, CHRO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 22,666

Underlying: Common Stock · 9,206 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, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

F3 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2021, and will fully vest on March 1, 2024.

F2 · balance_after: The PUs were initially granted to the Reporting Person on March 1, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

SEC source: 0001020569-24-000046 · wk-form4_1708988530.xml · derivative · entry 1

Hytinen Barry · CIK 0001613777 · EVP and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 53,335

Underlying: Common Stock · 21,663 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, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

F3 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2021, and will fully vest on March 1, 2024.

F2 · balance_after: The PUs were initially granted to the Reporting Person on March 1, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

SEC source: 0001020569-24-000042 · wk-form4_1708988081.xml · derivative · entry 1

Borges Daniel · CIK 0001720656 · SVP & Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,999

Underlying: Common Stock · 1,624 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, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.

F3 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2021, and will fully vest on March 1, 2024.

F2 · balance_after: The PUs were initially granted to the Reporting Person on March 1, 2021. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 22, 2024, of the actual award of PUs under the grant after completion of the relevant performance period.