[144] Iron Mountain Inc. SEC Filing

Rhea-AI Filing Summary

Iron Mountain Inc. (IRM) Form 144 notice reports a proposed sale of 6,000 common shares to be executed through Fidelity Brokerage Services on 09/02/2025 on the NYSE. The filing states an aggregate market value for the proposed sale of $546,300 and lists total shares outstanding of 295,348,225. The shares were acquired by the filer on 03/01/2025 via restricted stock vesting from the issuer as compensation. The filer previously sold 6,000 shares on 07/01/2025 for $612,120 and 6,000 shares on 08/01/2025 for $583,200. The notice includes the standard representation that the seller is not aware of undisclosed material adverse information.

Positive

• Form 144 filed timely, demonstrating regulatory compliance with Rule 144 disclosure requirements
• Acquisition source disclosed (restricted stock vesting), clarifying the nature of insider holdings

Negative

• Insider sales occurred in consecutive months (July, August, and proposed September), which could be interpreted unfavorably by some investors
• No date of any Rule 10b5-1 trading plan is provided in the remarks, so planned-trading protections are not documented on the form

Insights

Securities Analyst

TL;DR: Routine insider sale of vested restricted stock; disclosure consistent with Rule 144, limited market impact given sale size versus outstanding shares.

The filing documents a proposed sale of 6,000 shares (approximate value $546k) by an insider who received the shares through restricted stock vesting on 03/01/2025. Two recent small block sales of 6,000 shares each occurred in July and August 2025, with gross proceeds of $612,120 and $583,200 respectively. Relative to 295.35 million shares outstanding, these transactions are immaterial to common share supply and unlikely to affect liquidity or valuation materially. The submission follows required disclosures and includes the customary Rule 144 representation about material nonpublic information.

Corporate Governance Expert

TL;DR: Disclosure meets regulatory form requirements; frequent small sales suggest scheduled or rule-based liquidity rather than opportunistic trading.

The filer indicates acquisition via restricted stock vesting and lists sales executed through a broker, which aligns with typical executive compensation unwind and compliance with Rule 144 aggregation rules. The filing contains the standard attestation about lack of material nonpublic information and a signature block. No indications of Rule 10b5-1 plan adoption date are provided in the remarks section, so any reliance on a predetermined trading plan is not documented in this form.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	546300.00	295348225	09/02/2025	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	03/01/2025	Restricted Stock Vesting	Issuer			6000	03/01/2025	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	07/01/2025	6000	612120.00
Mark Kidd 85 New Hampshire Avenue Suite 150 Portsmouth NH 03801	Common	08/01/2025	6000	583200.00

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does Iron Mountain (IRM) Form 144 report?

The Form 144 reports a proposed sale of 6,000 common shares via Fidelity with an aggregate market value of $546,300 and states shares outstanding of 295,348,225.

When were the shares acquired by the filer?

The shares were acquired on 03/01/2025 through restricted stock vesting from the issuer and were recorded as compensation.

Has the filer recently sold other IRM shares?

Yes. The filer sold 6,000 shares on 07/01/2025 for $612,120 and 6,000 shares on 08/01/2025 for $583,200.

Where will the proposed sale be executed?

The proposed sale is to be executed on the NYSE through Fidelity Brokerage Services LLC on 09/02/2025.

Does the Form 144 state the filer knows of any undisclosed material information?

The filing includes the required representation that the filer does not know any material adverse information about the issuer that has not been publicly disclosed.