IRON MOUNTAIN INC

IRM

Form 4 • Statement of Changes in Beneficial Ownership

SEC Accession Number: 0001566391-26-000010
Filing date: Mar 5, 2026
Earliest execution date: Mar 3, 2026
Reporting Owners: Meaney William L (CEO)

Summary

Type

Sell

Net shares

-197,318

% of shares

-33.35%

Amount (USD)

$21,132,766

Insider confidence score

7.5 out of 100

Positive

  • Under Rule 10b5-1 trading plan

Negative

  • Extreme scheduled sell (≥25% of shares)
  • Massive sell amount ($10M+)

Stock transactions

Transaction 1

Security

Common Stock, par value $.01 per share

Action

Sell

Date

2026-03-03

Code

S

Net shares

-23,590.0

Price per Share

$105.25

Amount (USD)

$2,482,847.50

Acquired/Disposed

Disposed

Shares Owned Before

295,975.0

Shares Owned After

272,385.0

Transaction 2

Security

Common Stock, par value $.01 per share

Action

Sell

Date

2026-03-03

Code

S

Net shares

-18,360.0

Price per Share

$106.33

Amount (USD)

$1,952,218.80

Acquired/Disposed

Disposed

Shares Owned Before

272,385.0

Shares Owned After

254,025.0

Transaction 3

Security

Common Stock, par value $.01 per share

Action

Sell

Date

2026-03-03

Code

S

Net shares

-30,940.0

Price per Share

$107.43

Amount (USD)

$3,323,884.20

Acquired/Disposed

Disposed

Shares Owned Before

254,025.0

Shares Owned After

223,085.0

Transaction 4

Security

Common Stock, par value $.01 per share

Action

Sell

Date

2026-03-03

Code

S

Net shares

-25,769.0

Price per Share

$107.94

Amount (USD)

$2,781,505.86

Acquired/Disposed

Disposed

Shares Owned Before

223,085.0

Shares Owned After

197,316.0

Transaction 5

Security

Common Stock, par value $.01 per share

Action

Sell

Date

2026-03-04

Code

S

Net shares

-27,688.0

Price per Share

$106.96

Amount (USD)

$2,961,508.48

Acquired/Disposed

Disposed

Shares Owned Before

197,316.0

Shares Owned After

169,628.0

Transaction 6

Security

Common Stock, par value $.01 per share

Action

Sell

Date

2026-03-04

Code

S

Net shares

-70,971.0

Price per Share

$107.52

Amount (USD)

$7,630,801.92

Acquired/Disposed

Disposed

Shares Owned Before

169,628.0

Shares Owned After

98,657.0

Filing's footnotes

1. The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

2. The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated common stock ("Common Stock") were sold in multiple transactions at prices ranging from $104.82 to $105.80, inclusive. The Reporting Person undertakes to provide Iron Mountain Incorporated (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (2).

3. The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $105.82 to $106.81, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (3).

4. The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $106.82 to $107.82, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (4).

5. The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $107.82 to $108.18, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (5).

6. The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $106.20 to $107.19, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (6).

7. The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $107.20 to $108.08, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (7).

ℹ️ Filed under Rule 10b5-1 trading plan

This page is for informational purposes only. While we strive for accuracy, the summary may contain inaccuracies or omissions. Please refer to the official SEC filing for authoritative information. Open the SEC filing.