IRM Filing
4Filing Date: May 11, 2026
IRON MOUNTAIN INC (IRM) · Insider Trading (Form 4) SEC Filing
Statement of Changes in Beneficial Ownership
descriptionView SEC Filing
ACC: 0001732058-26-000013open_in_new
Total Value$767.5K
Trades1
Insiders1
Transaction Details
Kidd Mark
EVP, GM Data Centers & ALM·Direct
Sell · Dispose
Common Stock, par value $.01 per share
Shares-6.00K
Price$127.91
Total Value$767.5K
Shares Owned After119.51K
Transaction DateMay 8, 2026
10b5-1
Footnotes ▸
The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 20, 2025.
Post-Transaction Holdings
Kidd Mark
| Security | Shares | Change |
|---|---|---|
| Common Stock, par value $.01 per share | 119.51K | -6.00K (-4.78%) |
Original SEC Filing Textexpand_more
=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-05-08
10b5-1 Pre-arranged Plan: Yes
--- Issuer ---
Name: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
--- Reporting Owner ---
Name: Kidd Mark
CIK: 0001732058
Role: Officer (EVP, GM Data Centers & ALM)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock, par value $.01 per share
Date: 2026-05-08 | Code: S (Open market sale)
Shares: -6,000 | Price: $127.91
Total Value: $767,460.00
Shares Owned After: 119,507 | Ownership: D (Direct)
Footnotes:
[F1] The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 20, 2025.
--- Footnotes (Complete Index) ---
F1: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 20, 2025.
--- Signature ---
/s/ /s/ Christine Zhang, under Power of Attorney dated June 19, 2025, from Mark Kidd (2026-05-11)