Iron Mountain (IRM) CEO Meaney reports option exercise and stock sales

Rhea-AI Filing Summary

Iron Mountain Incorporated’s President and CEO William Meaney reported an option exercise and related stock sales. On 01/02/2026, he exercised an employee stock option to acquire 38,482 shares of common stock at an exercise price of $37 per share. That same day, he sold 25,809 shares at a weighted average price of $82.988 and 12,673 shares at a weighted average price of $83.545, both under transaction code “S” for sale.

The filing states these trades were made under a Rule 10b5-1 trading plan adopted on March 14, 2025. Following the transactions, Meaney reported no directly held common stock, but disclosed indirect ownership of 82,970 shares through the Meaney 2024 Master Trust and 212,680 shares through Meaney Master Trust #2, as well as 423,214 employee stock options remaining beneficially owned.

Insights

Insider transactions analyst

CEO exercised options and sold shares under a pre-set Rule 10b5-1 plan.

William Meaney, President, CEO and Director of Iron Mountain Incorporated, reported exercising an employee stock option for $37 per-share and acquiring 38,482 shares of common stock on 01/02/2026. On the same date, he sold 25,809 shares at a weighted average of $82.988 and 12,673 shares at a weighted average of $83.545, categorized as open-market sales. The option was originally granted for 461,696 shares and is described as fully vested.

The filing specifies these trades were executed pursuant to a Rule 10b5-1 trading plan adopted on March 14, 2025, indicating a pre-arranged schedule rather than an ad hoc decision. After the reported transactions, Meaney shows no directly held common stock, but continues to report indirect holdings of 82,970 shares and 212,680 shares through two separate trusts, plus 423,214 stock options. This mix of sales, remaining options, and indirect holdings reflects portfolio and compensation management rather than a clearly directional signal.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Meaney William L

(Last) (First) (Middle)

C/O IRON MOUNTAIN INCORPORATED

85 NEW HAMPSHIRE AVENUE, SUITE 150

(Street)

PORTSMOUTH NH 03801

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
IRON MOUNTAIN INC [ IRM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
01/02/2026

4. If Amendment, Date of 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

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	01/02/2026		M(1)		38,482	A	$37	38,482	D
Common Stock, par value $.01 per share	01/02/2026		S(1)		25,809	D	$82.988(2)	12,673	D
Common Stock, par value $.01 per share	01/02/2026		S(1)		12,673	D	$83.545(3)	0	D
Common Stock, par value $.01 per share								82,970	I	By Meaney 2024 Master Trust
Common Stock, par value $.01 per share								212,680	I	By Meaney Master Trust #2

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 Securities Underlying Derivative Security (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: 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)	$37	01/02/2026		M(1)			38,482	(4)	02/16/2027	Common Stock, par value $.01 per share	38,482	(5)	423,214	D

Explanation of Responses:

1. The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

2. The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated common stock ("Common Stock") were sold in multiple transactions at prices ranging from $82.405 to $83.402, inclusive. The Reporting Person undertakes to provide Iron Mountain Incorporated (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (2).

3. The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $83.405 to $83.755, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (3).

4. This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.

5. Not applicable.

Remarks:

	/s/ Christine Zhang, under Power of Attorney dated February 27, 2025, from William Meaney	01/06/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What insider transactions did IRM CEO William Meaney report on January 2, 2026?

On 01/02/2026, William Meaney exercised an employee stock option to acquire 38,482 shares of Iron Mountain common stock at $37 per share and sold 25,809 shares at a weighted average price of $82.988 and 12,673 shares at a weighted average price of $83.545.

Was the IRM insider sale made under a Rule 10b5-1 trading plan?

Yes. The filing states that the transactions were made pursuant to a Rule 10b5-1 trading plan adopted by William Meaney on March 14, 2025, which is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

How many Iron Mountain shares does William Meaney still beneficially own after these transactions?

After the reported transactions, William Meaney reported no directly held common stock. He reported indirect ownership of 82,970 shares through the Meaney 2024 Master Trust and 212,680 shares through Meaney Master Trust #2.

What stock options related to IRM does William Meaney retain after the Form 4 transactions?

Following the reported activity, Meaney beneficially owns 423,214 employee stock options with an exercise price of $37 per share. The option referenced in the filing was initially granted for 461,696 shares and is described as fully vested.

What were the sale price ranges for William Meaney’s IRM stock transactions?

For the $82.988 weighted average sale, the filing states the actual sale prices ranged from $82.405 to $83.402. For the $83.545 weighted average sale, prices ranged from $83.405 to $83.755, with full breakdowns available on request.

What is William Meaney’s relationship to Iron Mountain Incorporated (IRM)?

The filing lists William Meaney as both a Director and an Officer of Iron Mountain Incorporated, with the officer title of President and CEO.