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Kidd Mark's Form 4 filing

Iron Mountain Inc (IRM) · filed Mar 3, 2026

Accession no.
0001732058-26-000009
Filed
Mar 3, 2026
Trade date
Mar 1-2, 2026
Filing delay
2 days
Rule 10b5-1 plan
Checked

This filing lists 3 non-derivative transactions and 1 derivative transaction. Open-market sales total $643.6K. It was filed 2 days after the trade.

Reporting owners

A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.

Reporting owners on this filing
OwnerRelationship to the company
Kidd MarkCIK 0001732058Officer (EVP, GM Data Centers & ALM)

Non-derivative securities (Table I)

Acquisitions and disposals of common stock and similar shares, one row per line on the filing.

Non-derivative transactions
Trade dateSecurityTransactionSharesPriceValueShares afterOwnershipFlags
Mar 1, 2026Common Stock, par value $.01 per shareMOption exerciseAcquired+149,768$0.00$0198,849Direct
Mar 1, 2026Common Stock, par value $.01 per shareFTax withholdingDisposed−61,342$108.33−$6,645,178.86137,507Direct
Mar 2, 2026Common Stock, par value $.01 per shareSSaleDisposed−6,000$107.27−$643,620131,507Direct

Derivative securities (Table II)

Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.

Derivative transactions
Trade dateSecurityTransactionUnderlying sharesUnit priceValueHeld afterOwnershipFlags
Mar 1, 2026Common Stock, par value $.01 per shareMOption exerciseDisposed−149,768$0.00$00Direct

Footnotes and remarks

Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.

No transaction price on this filing refers to a footnote.

Read the full filing on SEC EDGAR (opens in a new tab)