Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Duale Marc A
   2. Issuer Name and Ticker or Trading Symbol
IRON MOUNTAIN INC [IRM] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
President Iron Mountain Int'l
(Last)
(First)
(Middle)
THIRD FLOOR, COTTONS CENTRE,, TOOLEY STREET		 3. Date of Earliest Transaction (Month/Day/Year)
04/18/2016
(Street)

LONDON, X0 SE1 2TT		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock, par value $.01 per share 04/18/2016   S(1)   12,501 D $ 35 51,211 D  
Common Stock, par value $.01 per share 04/18/2016   S(1)   400 D $ 35.01 50,811 D  
Common Stock, par value $.01 per share 04/18/2016   S(1)   10,800 D $ 35.02 40,011 D  
Common Stock, par value $.01 per share 04/18/2016   M(1)   8,756 A $ 24.804 48,767 D  
Common Stock, par value $.01 per share 04/18/2016   S(1)   8,756 D $ 35 40,011 D  
Common Stock, par value $.01 per share 04/18/2016   M(1)   11,345 A $ 22.036 51,356 D  
Common Stock, par value $.01 per share 04/18/2016   S(1)   11,345 D $ 35 40,011 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (Right to Buy) $ 24.804 04/18/2016   M(1)     8,756   (2) 02/13/2024 Common Stock 8,756 $ 0 17,540 D  
Employee Stock Option (Right to Buy) $ 22.036 04/18/2016   M(1)     11,345   (3) 03/01/2019 Common Stock 11,345 $ 0 22,692 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Duale Marc A
THIRD FLOOR, COTTONS CENTRE,
TOOLEY STREET
LONDON, X0 SE1 2TT		       President Iron Mountain Int'l  

Signatures

 /s/ Garry B. Watzke, under Power of Attorney dated December 2, 2010, from Marc A. Duale   04/20/2016
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) This transaction was effected pursuant to a 10b5-1 trading plan which was approved and became effective as of December 1, 2015.
(2) This stock option, representing a right to purchase a total of 26,296 shares, vests in substantially equal annual installments on February 13 of each year until 2017. The number of stock options granted includes previously reported adjustments effective on September 26, 2014 made in connection with the special distribution declared by the Board of Directors of Iron Mountain Incorporated on September 15, 2014 and paid on November 4, 2014 (the "Special Distribution").
(3) This stock option, representing a right to purchase a total of 34,037 shares, vests in substantially equal annual installments on March 2 of each year until 2017. The number of stock options granted includes previously reported adjustments effective on September 26, 2014 made in connection with the Special Distribution.

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