Were William Meaney’s Iron Mountain share sales under a Rule 10b5-1 plan?

Yes. A footnote states the transactions were made pursuant to a Rule 10b5-1 trading plan adopted by William Meaney on March 14, 2025. Such pre‑arranged plans schedule trades in advance, indicating the timing was determined before the trade date.

Iron Mountain CEO sells shares after option exercise

Iron Mountain Inc.’s President and CEO William L. Meaney exercised employee stock options to acquire 38,474 shares of common stock at a conversion price of $37.00 per share.

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Form Type

Rhea-AI Filing Summary

Iron Mountain Inc.’s President and CEO William L. Meaney exercised employee stock options to acquire 38,474 shares of common stock at a conversion price of $37.00 per share. On the same date, he sold 38,474 common shares in multiple open‑market transactions at prices reported around $126.20–$129.66, pursuant to a pre‑arranged Rule 10b5-1 trading plan adopted on March 14, 2025. Separate from these trades, indirect holdings reported for trusts associated with Meaney totaled 212,680 shares and 82,970 shares of common stock.

Insider Trade Summary 10b5-1

Exercise and Sale: 38,474 shares ($3.48M approx. pre-tax spread)

Exercise and Sale 9 txns

Insider Meaney William L

Role President and CEO

Sold 38,474 shs ($4.91M)

Approx. gross sale proceeds $4.91M

Approx. exercise cost $1.42M

Approx. pre-tax spread $3.48M

Type	Security	Shares	Price	Value
Exercise	Employee Stock Option (Right to Buy)	38,474	$0.00	$0.00
Exercise	Common Stock, par value $.01 per share	38,474	$37.00	$1.42M
Sale	Common Stock, par value $.01 per share	10,156	$126.20	$1.28M
Sale	Common Stock, par value $.01 per share	10,457	$127.00	$1.33M
Sale	Common Stock, par value $.01 per share	7,523	$127.90	$962K
Sale	Common Stock, par value $.01 per share	9,247	$129.14	$1.19M
Sale	Common Stock, par value $.01 per share	1,091	$129.66	$141K
holding	Common Stock, par value $.01 per share	--	--	--
holding	Common Stock, par value $.01 per share	--	--	--

Holdings After Transaction: Employee Stock Option (Right to Buy) — 230,844 contracts (Direct); Common Stock, par value $.01 per share — 0 shares (Direct); Common Stock, par value $.01 per share — 82,970 shares (Indirect, By Meaney 2024 Master Trust); Common Stock, par value $.01 per share — 212,680 shares (Indirect, By Meaney Master Trust #2)

Footnotes (8)

F1. The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.
F2. 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 $125.49 to $126.48, 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).
F3. The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $126.50 to $127.48, 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).
F4. The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $127.50 to $128.48, 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 (4).
F5. The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $128.55 to $129.54, 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 (5).
F6. The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $129.55 to $129.78, 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 (6).
F7. This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.
F8. Not applicable.

Key Figures

Options exercised: 38,474 shares at $37.00 Shares sold (total): 38,474 shares Sale price tranche 1: $126.20 per share +6 more

9 metrics

Options exercised 38,474 shares at $37.00 Employee stock option exercise on June 1, 2026

Shares sold (total) 38,474 shares Open-market sales on June 1, 2026

Sale price tranche 1 $126.20 per share Common stock sale price on June 1, 2026

Sale price tranche 2 $127.00 per share Common stock sale price on June 1, 2026

Sale price tranche 3 $127.90 per share Common stock sale price on June 1, 2026

Sale price tranche 4 $129.14 per share Common stock sale price on June 1, 2026

Sale price tranche 5 $129.66 per share Common stock sale price on June 1, 2026

Indirect trust holding #1 212,680 shares Meaney Master Trust #2 common stock holding

Indirect trust holding #2 82,970 shares Meaney 2024 Master Trust common stock holding

Key Terms

Rule 10b5-1 trading plan, weighted average price, Employee Stock Option (Right to Buy), Common Stock, par value $.01 per share, +2 more

6 terms

Rule 10b5-1 trading plan regulatory

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

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Employee Stock Option (Right to Buy) financial

"Security title: Employee Stock Option (Right to Buy)"

derivative exercise/conversion financial

"transaction_action: derivative exercise/conversion"

fully vested financial

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

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did IRM CEO William Meaney report on June 1, 2026?

William Meaney reported exercising stock options for 38,474 Iron Mountain common shares at $37.00 each and selling 38,474 shares in multiple open‑market transactions at prices around $126.20–$129.66. The filing reflects a coordinated exercise‑and‑sell sequence.

At what prices did the IRM CEO sell his Iron Mountain shares?

The CEO sold Iron Mountain common shares in several open‑market trades at reported prices of $126.20, $127.00, $127.90, $129.14, and $129.66 per share. Each line represents weighted‑average prices for multiple transactions within specified intraday ranges.

How many Iron Mountain shares did the CEO acquire through option exercise?

He exercised employee stock options covering 38,474 Iron Mountain common shares at a conversion price of $37.00 per share. A related footnote explains this option initially represented rights to purchase 461,696 shares and is fully vested as of the reported date.

What indirect Iron Mountain shareholdings are reported for William Meaney?

The filing reports 212,680 Iron Mountain common shares held indirectly through the Meaney Master Trust #2 and 82,970 shares held indirectly through the Meaney 2024 Master Trust. These are classified as indirect ownership positions separate from his directly transacted shares.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 06/02/2026 - 04:36 PM EDT

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).

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

NEW HAMPSHIRE

03801

(City)

(State)

(Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	06/01/2026		M⁽¹⁾		38,474	A	$37	38,474	D
Common Stock, par value $.01 per share	06/01/2026		S⁽¹⁾		10,156	D	$126.2⁽²⁾	28,318	D
Common Stock, par value $.01 per share	06/01/2026		S⁽¹⁾		10,457	D	$127⁽³⁾	17,861	D
Common Stock, par value $.01 per share	06/01/2026		S⁽¹⁾		7,523	D	$127.9⁽⁴⁾	10,338	D
Common Stock, par value $.01 per share	06/01/2026		S⁽¹⁾		9,247	D	$129.14⁽⁵⁾	1,091	D
Common Stock, par value $.01 per share	06/01/2026		S⁽¹⁾		1,091	D	$129.66⁽⁶⁾	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Employee Stock Option (Right to Buy)	$37	06/01/2026		M⁽¹⁾			38,474	⁽⁷⁾	02/16/2027	Common Stock, par value $.01 per share	38,474	⁽⁸⁾	230,844	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 $125.49 to $126.48, 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 Common Stock were sold in multiple transactions at prices ranging from $126.50 to $127.48, 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. The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $127.50 to $128.48, 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 (4).

5. The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $128.55 to $129.54, 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 (5).

6. The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $129.55 to $129.78, 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 (6).

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

8. Not applicable.

Remarks:

	/s/ Christine Zhang, under Power of Attorney dated February 27, 2025, from William Meaney	06/02/2026
	** 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.
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 Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR