STOCK TITAN

Iron Mountain (NYSE: IRM) CEO sells 38,474 shares after option exercise

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

IRON MOUNTAIN INC President and CEO William L. Meaney exercised stock options and sold the resulting shares. He exercised options for 38,474 shares of common stock at $37.00 per share, then sold 38,474 shares in an open-market transaction at an average price of $102.71 per share. The transaction was made under a pre-arranged Rule 10b5-1 trading plan adopted on March 14, 2025. Following these transactions, filings show indirect holdings of 82,970 shares through the Meaney 2024 Master Trust and 212,680 shares through Meaney Master Trust #2, along with 307,792 stock options remaining from an option grant that was initially for 461,696 shares and is fully vested.

Positive

  • None.

Negative

  • None.
Insider Meaney William L
Role President and CEO
Sold 38,474 shs ($3.95M)
Type Security Shares Price Value
Exercise Employee Stock Option (Right to Buy) 38,474 $0.00 --
Exercise Common Stock, par value $.01 per share 38,474 $37.00 $1.42M
Sale Common Stock, par value $.01 per share 38,474 $102.71 $3.95M
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) — 307,792 shares (Direct); Common Stock, par value $.01 per share — 38,474 shares (Direct); Common Stock, par value $.01 per share — 82,970 shares (Indirect, By Meaney 2024 Master Trust)
Footnotes (1)
  1. The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025. This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested. Not applicable.
Options exercised 38,474 shares Employee Stock Option exercised on April 1, 2026
Option exercise price $37.00 per share Strike price for exercised Employee Stock Option
Shares sold 38,474 shares Common stock sale on April 1, 2026
Average sale price $102.71 per share Price for open-market sale of common stock
Options remaining 307,792 options Stock options remaining after exercise from fully vested grant
Indirect holding – Master Trust 2024 82,970 shares Common stock held by Meaney 2024 Master Trust
Indirect holding – Master Trust #2 212,680 shares Common stock held by Meaney Master Trust #2
Rule 10b5-1 trading plan financial
"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.
Employee Stock Option financial
"Employee Stock Option (Right to Buy) with a conversion or exercise price of $37.0000."
An employee stock option is a promise that lets a worker buy company shares later at a predetermined price, often after they stay for a certain period or meet performance goals — think of it like a coupon that locks in today's price for a future purchase. It matters to investors because options align employees’ incentives with company performance, can increase the number of shares outstanding (dilution) when exercised, and represent a compensation cost that affects reported profits and shareholder value.
derivative security financial
"Transaction code M is described as Exercise or conversion of derivative security."
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
open-market sale financial
"Transaction code S is described as Sale in open market or private transaction."
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
indirect ownership financial
"Indirect ownership reported as By Meaney 2024 Master Trust and By Meaney Master Trust #2."
SEC Form 4
FORM 4UNITED 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 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)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
President and CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock, par value $.01 per share04/01/2026M(1)38,474A$3738,474D
Common Stock, par value $.01 per share04/01/2026S(1)38,474D$102.710D
Common Stock, par value $.01 per share82,970IBy Meaney 2024 Master Trust
Common Stock, par value $.01 per share212,680IBy 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Employee Stock Option (Right to Buy)$3704/01/2026M(1)38,474 (2)02/16/2027Common Stock, par value $.01 per share38,474(3)307,792D
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. This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.
3. Not applicable.
Remarks:
/s/ Christine Zhang, under Power of Attorney dated February 27, 2025, from William Meaney04/02/2026
** Signature of Reporting PersonDate
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)

FAQ

What did IRON MOUNTAIN (IRM) CEO William Meaney do in this Form 4 filing?

William Meaney exercised stock options and sold the resulting shares. He converted 38,474 options at $37.00 into common stock and sold 38,474 shares at an average price of $102.71 in an open-market transaction.

How many IRON MOUNTAIN (IRM) shares did the CEO sell and at what price?

He sold 38,474 shares of IRON MOUNTAIN common stock. The reported average sale price was $102.71 per share, reflecting an open-market or private transaction recorded as a sale in this insider trading disclosure.

What stock options did the IRON MOUNTAIN (IRM) CEO exercise in this transaction?

He exercised an Employee Stock Option to acquire 38,474 shares at a strike price of $37.00 per share. The option grant was initially for 461,696 shares and is described as fully vested in the disclosure footnotes.

Were the IRON MOUNTAIN (IRM) CEO’s trades under a Rule 10b5-1 plan?

Yes. The filing states the transaction was made under a Rule 10b5-1 trading plan adopted by William Meaney on March 14, 2025. Such plans pre-schedule trades, making their timing more routine rather than discretionary.

What IRON MOUNTAIN (IRM) shares does the CEO still hold indirectly after this Form 4?

After the reported transactions, filings show 82,970 shares held through the Meaney 2024 Master Trust and 212,680 shares held through Meaney Master Trust #2. These positions are reported as indirect ownership interests in IRON MOUNTAIN stock.

Does the IRON MOUNTAIN (IRM) CEO retain stock options after this exercise and sale?

Yes. Following the exercise of 38,474 options, the filing reports 307,792 stock options remaining from the same grant. The footnotes describe this option award, initially for 461,696 shares, as fully vested at the time of reporting.