IRM (IRM) Rule 144 notice: 6,000-share vesting and two 6,000-share sales

Rhea-AI Filing Summary

IRM notice of proposed resale under Rule 144 involving common stock tied to restricted stock vesting and recent sales by a reporting party. The filing lists 6,000 shares linked to a 03/01/2024 restricted-stock vesting event and two reported sales of 6,000 shares each on 01/02/2026 and 02/20/2026 with proceeds shown as $498,600.00 and $649,020.00.

Insights

Corporate Governance Analyst

Rule 144 notice lists past small-volume sales and a vesting-related resale plan.

The filing records a 6,000-share block associated with a 03/01/2024 restricted stock vesting and two reported sales of 6,000 shares each on 01/02/2026 and 02/20/2026, with proceeds of $498,600.00 and $649,020.00.

These entries document permitted resale activity under securities-law safe harbors; timing and additional holder plans are not detailed in the excerpt, and subsequent filings would show further activity if it occurs.

FAQ

What does IRM's Form 144 filing report?

The filing reports a proposed resale under Rule 144 of common stock tied to a 6,000-share restricted stock vesting dated 03/01/2024. It also lists two recent reported sales of 6,000 shares each on 01/02/2026 and 02/20/2026.

Who is the reporting person in the IRM Form 144?

The report names Mark Kidd with an address in Portsmouth, NH as the reporting person. The broker listed is Fidelity Brokerage Services LLC at the address shown in the excerpt.

How much cash did the recent IRM sales generate?

The excerpt shows two sale proceeds: $498,600.00 for the 01/02/2026 sale and $649,020.00 for the 02/20/2026 sale. Those figures are presented in the selling activity section.

Does the Form 144 indicate why the shares are being sold?

The filing links the 6,000 shares to a 03/01/2024 restricted stock vesting under a compensation context. No further reasons or planned uses of proceeds are provided in the excerpt.

Are the amounts in the Form 144 the total outstanding shares?

The numbers shown—each 6,000-share entry—relate to the proposed resale and recent sales; the excerpt does not provide a shares-outstanding total or aggregate float figure to compare against these amounts.

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

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Accepted by SEC EDGAR 03/02/2026 - 11:05 AM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001732058
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	IRON MOUNTAIN INC
SEC File Number	001-13045
Address of Issuer	85 NEW HAMPSHIRE AVENUE, SUITE 150 PEASE INTERNATIONAL TRADEPORT PORTSMOUTH NEW HAMPSHIRE 03801
Phone	617-535-4781
Name of Person for Whose Account the Securities are To Be Sold	Kidd Mark
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	6000	643620.00	295835206	03/02/2026	NYSE

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

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	03/01/2024	Restricted Stock Vesting	Issuer			6000	03/01/2024	Compensation

* 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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Mark Kidd 85 New Hampshire Avenue Suite 150 Portsmouth NH 03801	Common	01/02/2026	6000	498600.00
Mark Kidd 85 New Hampshire Avenue Suite 150 Portsmouth NH 03801	Common	02/20/2026	6000	649020.00

144: Remarks and Signature

Remarks
Date of Notice	03/02/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/20/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Mark Kidd
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)