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        <relationshipToIssuer>Director</relationshipToIssuer>
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          <com:stateOrCountry>RI</com:stateOrCountry>
          <com:zipCode>02917</com:zipCode>
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      <planAdoptionDates>
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      <signature>/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for William Meaney</signature>
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144
0001566391
XXXXXXXX
LIVE
0001020569
IRON MOUNTAIN INC
001-13045
85 NEW HAMPSHIRE AVENUE, SUITE 150
PEASE INTERNATIONAL TRADEPORT
PORTSMOUTH
NH
03801
617-535-4781
Meaney William L
Officer
Director
Common
Fidelity Brokerage Services LLC
900 Salem Street
Smithfield
RI
02917
10507
581877.66
291623270
05/22/2023
NYSE
Common
05/22/2023
Stock Option Exercise (Granted 02/13/2014)
Issuer
N
10507
05/22/2023
Cash
N
William Meaney
85 New Hampshire Avenue
Suite 150
Portsmouth
NH
03801
Common
02/27/2023
62904
3319802.48
William Meaney
85 New Hampshire Avenue
Suite 150
Portsmouth
NH
03801
Common
02/28/2023
62904
3309393.82
William Meaney
85 New Hampshire Avenue
Suite 150
Portsmouth
NH
03801
Common
03/01/2023
17766
931471.38
William Meaney
85 New Hampshire Avenue
Suite 150
Portsmouth
NH
03801
Common
03/02/2023
21219
1109329.32
William Meaney
85 New Hampshire Avenue
Suite 150
Portsmouth
NH
03801
Common
03/10/2023
11760
619164.00
William Meaney
85 New Hampshire Avenue
Suite 150
Portsmouth
NH
03801
Common
04/13/2023
10507
567798.28
William Meaney
85 New Hampshire Avenue
Suite 150
Portsmouth
NH
03801
Common
04/14/2023
10507
562649.85
05/22/2023
05/13/2022
/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for William Meaney