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  4. [144] IRON MOUNTAIN INC SEC Filing

IRM (NYSE: IRM) files Form 144 for 11,839-share sale

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
144

Rhea-AI Filing Summary

IRM has filed to potentially sell up to 11,839 shares of common stock through Fidelity Brokerage Services LLC on the NYSE, with an aggregate market value of $1,505,092.07. As context, 297,702,812 shares were outstanding. The planned sale combines 5,000 shares from restricted stock vesting on 03/01/2026 and 6,839 shares issuable from a stock option exercise on 08/06/2026.

Positive

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Negative

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Shares to be sold 11,839 shares Common stock covered by Form 144 through Fidelity Brokerage Services LLC
Aggregate market value $1,505,092.07 Market value of 11,839 common shares to be sold
Shares outstanding 297,702,812 shares Common shares outstanding as referenced alongside the proposed sale
Restricted stock vesting 5,000 shares Shares from restricted stock vesting dated 03/01/2026
Stock option exercise 6,839 shares Shares from stock option exercise dated 08/06/2026
Planned sale date 08/06/2026 Date tied to the NYSE sale of common shares
Restricted stock vesting date 03/01/2026 Acquisition date for 5,000 compensation shares
Form 144 regulatory
"144: Securities Information Common | Fidelity Brokerage Services LLC"
Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.
Restricted Stock Vesting financial
"Common | 03/01/2026 | Restricted Stock Vesting | Issuer"
Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.
Stock Option Exercise financial
"Common | 08/06/2026 | Stock Option Exercise | Issuer"
A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.
compensation financial
"5000 | 03/01/2026 | Compensation Common"
common financial
"Common | Fidelity Brokerage Services LLC 900 Salem Street"

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

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FAQ

What share sale is disclosed for IRM in this Form 144 filing?
The filing covers a proposed sale of 11,839 shares of IRM common stock. These shares have an aggregate market value of $1,505,092.07 and are to be sold through Fidelity Brokerage Services LLC on the NYSE.

How many IRM shares are outstanding in this Form 144 disclosure?
The document states that 297,702,812 shares of IRM common stock were outstanding. This figure provides context for the 11,839 shares covered by the proposed sale, indicating the sale represents a small fraction of total shares.

What portion of the IRM Form 144 shares come from restricted stock?
Of the 11,839 shares covered, 5,000 shares are tied to restricted stock vesting on 03/01/2026. These vested shares are listed as being acquired from the issuer as compensation before any potential sale.

How many IRM shares in the Form 144 come from stock option exercise?
The filing shows 6,839 shares are associated with a stock option exercise dated 08/06/2026. These shares are to be acquired from the issuer for cash, forming the remainder of the 11,839 shares covered.

Through which broker and market are the IRM Form 144 shares to be sold?
The proposed sale will be handled by Fidelity Brokerage Services LLC, with the shares listed for trading on the NYSE. The Form 144 links this broker and market to the potential disposition of 11,839 IRM common shares.

144: Filer Information

144: Issuer Information

144: Securities Information



Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold


* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.



Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

144: Remarks and Signature

Source: View Original Filing on SEC EDGAR