SEC Form 4 · accession 0001104659-18-001684

IRON MOUNTAIN INC · IRM

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Director

Period of report

Jan 8, 2018

Accepted (ET)

Jan 10, 2018 · 6:15 pm EST

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0001020569

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock, par value $.01 per share^F1	Jan 8, 2018	M	4,336	—	A	19,410	D
Common Stock, par value $.01 per share^F2	Jan 8, 2018	D	0	$37.04	D	19,410	D

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Phantom Stock^F3,F1,F4	—	Jan 8, 2018	M	4,336	D	—	—	Common Stock	4,336	0	D

F1Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock ("Phantom Shares") are payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.
F2Represents the fraction of a share of Common Stock otherwise issuable to the Reporting Person for which cash was paid in lieu of the issuance of a fractional share of Common Stock, based on the closing price of Common Stock on the New York Stock Exchange on the transaction date.
F3Settlement of the Phantom Shares is in an equivalent number of whole shares of Common Stock and cash in lieu of the issuance of a fractional share of Common Stock.
F4Settlement of the Phantom Shares is made in accordance with distribution elections made by the Reporting Person or as otherwise provided in the Plan.