Iron Mountain (IRM) Form 144 Notifies Proposed 69,125-Share Sale

Rhea-AI Filing Summary

Form 144 filed for Iron Mountain Inc. (IRM) shows a proposed sale of 69,125 shares of common stock through Fidelity Brokerage Services with an aggregate market value of $6,191,057.81, planned for 09/03/2025 on the NYSE. The filing states the shares were acquired via stock options originally granted 02/18/2016 and that payment will be in cash. The filer has reported two previous sales of 69,125 shares each on 07/01/2025 and 08/01/2025, with gross proceeds of $6,937,149.98 and $6,536,059.08 respectively. The notice includes the customary insider representation that the seller does not possess undisclosed material adverse information.

Positive

• Compliance with Rule 144 disclosure: The filer provides transaction details, broker, and acquisition history.
• Source of shares disclosed: Shares were acquired via options granted on 02/18/2016, clarifying basis of sale.

Negative

• None.

Insights

Securities Analyst

TL;DR: Insider intends another Rule 144 sale of 69,125 IRM shares; prior monthly sales of the same size were recently reported.

The filing documents a proposed Rule 144 sale executed through Fidelity for 69,125 shares valued at $6.19 million, acquired pursuant to options granted in 2016 and to be sold for cash. Two similar sales by the same individual occurred on 07/01/2025 and 08/01/2025 generating roughly $6.94 million and $6.54 million. From an investor perspective, these are structured, reported transactions complying with Rule 144 disclosure requirements; based on the absolute size versus the issuer's outstanding shares (295,348,225), the sales appear routine and not clearly material to capitalization.

Corporate Governance Expert

TL;DR: The filer disclosed option-originated share sales and certified absence of undisclosed material information.

The notice specifies the securities were obtained from options granted 02/18/2016 and are being monetized under Rule 144 with cash proceeds. The signature section reiterates the attestation regarding material nonpublic information and references Rule 10b5-1 plan language (date fields present but not populated). The document demonstrates formal compliance with disclosure obligations for officer/affiliate dispositions; no indication in the filing of trading-plan adoption dates or other conditions that would change the compliance assessment.

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

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	69125	6191057.81	295348225	09/03/2025	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	09/03/2025	Options Granted - 02/18/2016	Issuer			69125	09/03/2025	Cash

* 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
William Meaney 85 New Hampshire Avenue Suite 150 Portsmouth NH 03801	Common	07/01/2025	69125	6937149.98
William Meaney 85 New Hampshire Avenue Suite 150 Portsmouth NH 03801	Common	08/01/2025	69125	6536059.08

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 is being sold in the IRM Form 144 filing?

The filing reports a proposed sale of 69,125 shares of Iron Mountain common stock through Fidelity Brokerage Services.

How much are the 69,125 IRM shares worth according to the filing?

The aggregate market value is listed as $6,191,057.81 for the 69,125 shares.

When were the shares being sold acquired?

The shares were acquired on 09/03/2025 and are noted as originating from options granted 02/18/2016.

Has the filer sold IRM shares recently?

Yes; the filing discloses prior sales of 69,125 shares on 07/01/2025 and 69,125 shares on 08/01/2025 with gross proceeds of $6,937,149.98 and $6,536,059.08 respectively.

On which exchange will the proposed sale occur?

The sale is planned for the NYSE with an approximate sale date of 09/03/2025.