SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

SCHEDULE 13G*
(Rule 13d-102)

INFORMATION TO BE INCLUDED
IN STATEMENTS FILED PURSUANT
TO RULES 13d-1(b), (c), AND
(d) AND AMENDMENTS THERETO
FILED PURSUANT TO RULE 13d-2
(Amendment NO.1)*

Iron Mountain Incorporated
(Name of Issuer)
Common Stock
 
(Title of Class of Securities)
46284V101
 
(CUSIP Number)
September 30, 2024
 
(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

[x] Rule 13d-1(b)
☐ Rule 13d-1(c)
☐ Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).





1
NAMES OF REPORTING PERSONS
  
 Cohen & Steers, Inc. 14-1904657
  
  
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  
(a)☐
  
(b)[x]
  
3
SEC USE ONLY
  
   
  
4
CITIZENSHIP OR PLACE OF ORGANIZATION
  
 Delaware
  
  
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
5
SOLE VOTING POWER
  
 13,587,671
  
  
6
SHARED VOTING POWER
  
 0
  
  
7
SOLE DISPOSITIVE POWER
  
 18,046,503
  
  
8
SHARED DISPOSITIVE POWER
  
 0
  
  
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
  
 18,046,503
  
  
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
  
☐
  
  
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
  
 6.15%
  
  
12
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
  
 HC, CO
  
  









1
NAMES OF REPORTING PERSONS
  
 Cohen & Steers Capital Management, Inc.     13-3353336
  
  
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  
(a)☐
  
(b)[x]
  
3
SEC USE ONLY
  
   
  
4
CITIZENSHIP OR PLACE OF ORGANIZATION
  
 New York
  
  
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
5
SOLE VOTING POWER
  
 13,525,799
  
  
6
SHARED VOTING POWER
  
 0
  
  
7
SOLE DISPOSITIVE POWER
  
 17,938,794
  
  
8
SHARED DISPOSITIVE POWER
  
 0
  
  
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
  
 17,938,794
  
  
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
  
☐
  
  
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
  
 6.12%
  
  
12
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
  
 IA, CO
  
  







1
NAMES OF REPORTING PERSONS
  
 Cohen & Steers UK Limited
  
  
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  
(a)☐
  
(b)[x]
  
3
SEC USE ONLY
  
   
  
4
CITIZENSHIP OR PLACE OF ORGANIZATION
  
 United Kingdom
  
  
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
5
SOLE VOTING POWER
  
 47,526
  
  
6
SHARED VOTING POWER
  
 0
  
  
7
SOLE DISPOSITIVE POWER
  
 93,363
  
  
8
SHARED DISPOSITIVE POWER
  
 0
  
  
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
  
 93,363
  
  
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
  
☐
  
  
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
  
 0.03%
  
  
12
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
  
 IA, CO
  
  








1
NAMES OF REPORTING PERSONS
  
 Cohen & Steers Asia Limited
  
  
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  
(a)☐
  
(b)[x]
  
3
SEC USE ONLY
  
   
  
4
CITIZENSHIP OR PLACE OF ORGANIZATION
  
 Hong Kong
  
  
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
5
SOLE VOTING POWER
  
 0
  
  
6
SHARED VOTING POWER
  
 0
  
  
7
SOLE DISPOSITIVE POWER
  
 0
  
  
8
SHARED DISPOSITIVE POWER
  
 0
  
  
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
  
 0
  
  
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
  
☐
  
  
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
  
 0.00%
  
  
12
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
  
 IA, CO
  
  

1
NAMES OF REPORTING PERSONS
  
 Cohen & Steers Ireland Limited
  
  
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  
(a)☐
  
(b)[x]
  
3
SEC USE ONLY
  
   
  
4
CITIZENSHIP OR PLACE OF ORGANIZATION
  
 Ireland
  
  
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
5
SOLE VOTING POWER
  
 14,346
  
  
6
SHARED VOTING POWER
  
 0
  
  
7
SOLE DISPOSITIVE POWER
  
 14,346
  
  
8
SHARED DISPOSITIVE POWER
  
 0
  
  
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
  
 14,346
  
  
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
  
☐
  
  
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
  
 0.005%
  
  
12
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
  
 FI, CO
  
  








Item 1(a).
Name of Issuer:
Iron Mountain Incorporated
 



Item 1(b).
Address of Issuer's Principal Executive Offices:
 
85 New Hampshire Avenue, Suite 150
Portsmouth, NH 03801
USA



Item 2(a).
Name of Person Filing:
Cohen & Steers, Inc.
Cohen & Steers Capital Management, Inc.
Cohen & Steers UK Ltd
Cohen & Steers Asia Ltd
Cohen & Steers Ireland Ltd
  



Item 2(b).
Address of Principal Business Office or, if none, Residence:
 
The principal address for Cohen & Steers, Inc.
and Cohen & Steers Capital Management, Inc. is:
1166 Avenue of the Americas, 30th Floor
New York, NY 10036
 
The principal address for Cohen & Steers UK Ltd. is:
The Burlian, 2nd Floor
3 Dering Street, London W1S 1AA
United Kingdom
 
The principal address for Cohen & Steers Asia Ltd. is:
1201-02 Champion Tower
Three Garden Road
Central, Hong Kong
 
The principal address for Cohen & Steers Ireland Ltd. is:
77 Sir John Rogerson's Quay
Block C, Grand Canal Docklands
Dublin 2, D02 VK60
 
 
 
 









Item 2(c).
Citizenship:
Cohen & Steers, Inc: Delaware corporation
Cohen & Steers Capital Management, Inc: New York corporation
Cohen & Steers UK Ltd: United Kingdom Private Limited Company
Cohen & Steers Asia Ltd: Asia Private Limited Company
Cohen & Steers Ireland Ltd: Ireland Private Limited Company



Item 2(d).
Title of Class of Securities:
Common Stock



Item 2(e).
CUSIP Number:
46284V101





Item 3.
If This Statement Is Filed Pursuant to Sections 240.13d-1(b) or
240.13d-2(b) or (c), Check Whether the Person Filing Is a(n):

(a)
☐ Broker or dealer registered under Section 15 of the Act (15 U.S.C. 78o);

(b)
☐ Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c);

(c)
☐ Insurance company as defined in Section 3(a)(19) of the Act (15 U.S.C. 78c);

(d)
☐ Investment company registered under Section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);

(e)
[x] Investment adviser in accordance with Section 240.13d-1(b)(1)(ii)(E);

(f)
☐ Employee benefit plan or endowment fund in accordance with Section 240.13d-1(b)(1)(ii)(F);

(g)
[x] Parent holding company or control person in accordance with Section 240.13d-1(b)(1)(ii)(G);

(h)
☐ Savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)
☐ Church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)
[x] A non-U.S. institution in accordance with Section 240.13d-1(b)(1)(ii)(J);

(k)
☐ Group, in accordance with Section 240.13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with Section 240.13d-1(b)(1)(ii)(J), please specify the type of institution: ____________________________ .

Item 4.
Ownership.

(a)
Amount beneficially owned as of September 30, 2024: 
See row 9 cover sheet

(b)
Percent of class:
See row 11 on cover sheet

(c)
Number of shares as to which the person has:

(i)
Sole power to vote or to direct the vote:
           See row 5 on cover sheet

(ii)
Shared power to vote or to direct the vote:
                   See row 6 on cover sheet

(iii)
Sole power to dispose or to direct the disposition of:
                   See row 7 on cover sheet

(iv)
Shared power to dispose or to direct the disposition of:
                   See row 8 on cover sheet
Item 5.
Ownership of Five Percent or Less of a Class.
N/A

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [ ].

Item 6.
Ownership of More Than Five Percent on Behalf of Another Person.
Each of Cohen & Steers Capital Management, Inc., Cohen & Steers UK Ltd., Cohen & Steers Asia Ltd. and Cohen & Steers Ireland Ltd. holds the securities of the Issuer to which this statement relates for the benefit of their respective account holders.  Such account holders have the right to receive or the power to direct the receipt of dividends from, or proceeds from the sale of, the securities of the Issuer that are held on their behalf.




Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company.
Cohen & Steers, Inc. holds a 100% interest in Cohen & Steers Capital Management, Inc., Cohen & Steers UK Ltd., Cohen & Steers Asia Ltd. (investment advisors registered under Section 203 of the Investment Advisers Act) and Cohen & Steers Ireland Ltd. (a non-US institution).



Item 8.
Identification and Classification of Members of the Group.
N/A



Item 9.
Notice of Dissolution of Group.
N/A

















Item 10.
Certification.

By signing below, I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.
By signing below, I certify that, to the best of my knowledge and belief, the foreign regulatory scheme applicable to Cohen & Steers Ireland Ltd is substantially comparable to the regulatory scheme applicable to the functionally equivalent U.S. institution. I also undertake to furnish to the Commission staff, upon request, information that would otherwise be disclosed in a Schedule 13D.  I also undertake to furnish to the Commission staff, upon request, information that would otherwise be disclosed in a Schedule 13D filed by Cohen & Steers Ireland Ltd.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: November 14, 2024

 
Cohen & Steers, Inc.
Cohen & Steers Capital Management, Inc
  
 
By:
 /s/ Francis Poli
  
Name: Francis Poli
  
Title: EVP, General Counsel and Global CCO

 
Cohen & Steers UK Limited
  
 
By:
 /s/ Natalie Okorie
  
Name: Natalie Okorie
  
Title: VP, Compliance Officer

 
Cohen & Steers Asia Limited
  
 
By:
 /s/ Catherine Cheng
  
Name: Catherine Cheng
  
Title: VP, Compliance Officer

 
Cohen & Steers Ireland Limited
  
 
By:
 /s/ Alan Cooper
  
Name: Alan Cooper
  
Title: VP, Compliance Officer












JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned  hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13G referred to below) on behalf of each of them of a Statement on Schedule 13G including
amendments thereto with respect to the Common Shares of Iron Mountain Incorporated. and that this Agreement may be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts, all of which together shall constitute one and the same instrument.

         IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of November 14, 2024.


 
Cohen & Steers, Inc.
Cohen & Steers Capital Management, Inc
  
 
By:
 /s/ Francis Poli
  
Name: Francis Poli
  
Title: EVP, General Counsel and Global CCO

 
Cohen & Steers UK Limited
  
 
By:
 /s/ Natalie Okorie
  
Name: Natalie Okorie
  
Title: VP, Compliance Officer

 
Cohen & Steers Asia Limited
  
 
By:
 /s/ Catherine Cheng
  
Name: Catherine Cheng
  
Title: VP, Compliance Officer

 
Cohen & Steers Ireland Limited
  
 
By:
 /s/ Alan Cooper
  
Name: Alan Cooper
  
Title: VP, Compliance Officer




Iron Mountain Inc REIT (NYSE:IRM)
Historical Stock Chart
From Oct 2024 to Nov 2024 Click Here for more Iron Mountain Inc REIT Charts.
Iron Mountain Inc REIT (NYSE:IRM)
Historical Stock Chart
From Nov 2023 to Nov 2024 Click Here for more Iron Mountain Inc REIT Charts.