Edgar Filing: Brown Stuart B

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 ^*

Brown Stuart B

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)
EVP and CFO

(Last)

(First)

(Middle)

C/O IRON MOUNTAIN INCORPORATED, ONE FEDERAL STREET

3. Date of Earliest Transaction (Month/Day/Year)
02/19/2019

(Street)

BOSTON, MA 02110

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)
1.Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock, par value $.01 per share	02/19/2019		M		3,240 ⁽¹⁾	A	$ 0	16,915	D
Common Stock, par value $.01 per share	02/19/2019		F		952	D	$ 35.39	15,963	D
Common Stock, par value $.01 per share	02/19/2019		M		6,744 ⁽²⁾	A	$ 0	22,707	D
Common Stock, par value $.01 per share	02/19/2019		F		1,982	D	$ 35.39	20,725	D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.		SEC 1474 (9-02)

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

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Restricted Stock Units

⁽³⁾

02/19/2019

3,240

⁽⁴⁾

Common Stock

3,240

$ 0

3,250

Performance Units

⁽⁵⁾

02/19/2019

6,744

⁽⁶⁾

Common Stock

6,744

$ 0

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Brown Stuart B C/O IRON MOUNTAIN INCORPORATED ONE FEDERAL STREET BOSTON, MA 02110			EVP and CFO

Signatures

/s/ Elizabeth Tammaro, under Power of Attorney dated August 10, 2016, from Stuart Brown		02/21/2019
^**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 acquisition is reported to reflect the partial vesting of RSUs previously granted to the Reporting Person on February 16, 2017.
(2)	This acquisition is reported to reflect the full vesting of performance units ("PUs") previously granted to the Reporting Person on February 18, 2016. Effective February 14, 2019, 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 vested in full on February 18, 2019.
(3)	Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").
(4)	The RSUs, representing a contingent right to receive a total of 9,729 shares of Common Stock, were granted to the Reporting Person on February 16, 2017 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.
(5)	Each PU represents a contingent right to receive one share of Common Stock.
(6)	The PUs were initially granted to the Reporting Person on February 18, 2016. Effective February 14, 2019, the Compensation Committee determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs vested in full on February 18, 2019.

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