[144] IRON MOUNTAIN INC SEC Filing

Rhea-AI Filing Summary

Form 144 notice for Iron Mountain Inc (IRM) records a proposed sale of 6,000 common shares via Fidelity Brokerage Services with an aggregate market value of $609,780 and an approximate sale date of 10/01/2025 on the NYSE. The shares were acquired by the seller on 03/01/2025 through restricted stock vesting and were granted as compensation. The filer reports total shares outstanding of 295,348,225. The filing also lists three prior sales by Mark Kidd during the past three months: 6,000 shares on 07/01/2025 for $612,120, 6,000 shares on 08/01/2025 for $583,200, and 6,000 shares on 09/02/2025 for $546,300. The notice includes the standard attestation that the seller does not possess undisclosed material adverse information.

Positive

• Compliance with Rule 144: The filer discloses acquisition method, sale broker, proposed sale date, and recent sales history.
• Source of shares specified: Shares were acquired through restricted stock vesting and identified as compensation, clarifying origin.

Negative

• Insider sales occurred recently: Three reported sales in Jul, Aug, and Sep 2025 may warrant investor attention despite small size.
• Remarks fields left blank: No date of notice or plan adoption is provided in the visible remarks section.

Insights

Financial Analyst

TL;DR: Routine insider sale of recently vested restricted stock; sizes are small relative to the company's outstanding shares, suggesting limited market impact.

The filing documents a proposed sale of 6,000 shares valued at $609,780 and three recent monthly disposals of identical lot sizes. The shares were received via restricted stock vesting and classified as compensation, which is typical for executive or employee equity awards. Given the issuer's reported outstanding share count of 295,348,225, these transactions represent a de minimis percentage of float, indicating limited dilution or market-moving significance. Disclosure appears complete for Rule 144 requirements.

Corporate Governance Expert

TL;DR: Filing shows compliance with Rule 144 reporting for insider sales of vested compensation; recurring monthly sales may reflect a planned disposition.

The notice identifies the sales as stemming from restricted stock vesting and notes compensation as the payment nature, aligning with standard governance practice to disclose insider dispositions. The repeated monthly sales by the same seller are disclosed and aggregated where required. The form includes the mandatory representation regarding material nonpublic information. No governance violations or missing disclosures are evident within the provided content.

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	609780.00	295348225	10/01/2025	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
Mark Kidd 85 New Hampshire Avenue Suite 150 Portsmouth NH 03801	Common	09/02/2025	6000	546300.00

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 the Form 144 filed for IRM disclose?

The form discloses a proposed sale of 6,000 common shares valued at $609,780, to be sold through Fidelity on 10/01/2025, and prior sales in Jul, Aug, and Sep 2025.

How were the 6,000 IRM shares acquired?

The shares were acquired on 03/01/2025 through restricted stock vesting and the payment nature is listed as compensation.

Who executed the recent IRM share sales listed in this filing?

The recent sales were executed by Mark Kidd, each sale consisting of 6,000 common shares on 07/01/2025, 08/01/2025, and 09/02/2025 with gross proceeds of $612,120, $583,200, and $546,300 respectively.

How large are these sales relative to IRM's outstanding shares?

The filing reports 295,348,225 shares outstanding; the 6,000-share lots represent a de minimis fraction of total shares outstanding.

Does the filing state whether the seller has material nonpublic information?

Yes. By signing the notice the seller represents they do not know any material adverse information about the issuer that has not been publicly disclosed.