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person · Reporting owner

Meaney William L

Disclosed activity across 2 companies

Tapewire entity
575
SEC CIK
0001566391

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
IRON MOUNTAIN INCIRM · Entity 517Director · President and CEOOctober 01, 2026October 05, 2026
STATE STREET CORPSTT · Entity 242DirectorMay 20, 2026May 22, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

IRON MOUNTAIN INC

Report date October 01, 2026 · Filed October 05, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, par value $.01 per shareSEC Table I · non-derivativeDirect0 Ending reported balance After 2026-10-01 transaction · row 4
4 source rows · reconciled sequence

Row 1 · 2026-10-01 · Exercise / conversion · Acquired 38,474 · Balance 38,474

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

Row 2 · 2026-10-01 · Sale · Disposed 13,358 · Balance 25,116

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F2: 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 $109.02 to $110.00, 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).

Row 3 · 2026-10-01 · Sale · Disposed 10,808 · Balance 14,308

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F3: The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated Common Stock were sold in multiple transactions at prices ranging from $110.02 to $111.02, 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)

Row 4 · 2026-10-01 · Sale · Disposed 14,308 · Balance 0

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F4: The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated Common Stock were sold in multiple transactions at prices ranging from $111.03 to $111.55, 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)

Employee Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $37.00 · Expires 2027-02-16Direct76,948 Reported balance After 2026-10-01 transaction · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · 2026-10-01 · Exercise / conversion · Disposed 38,474 · Balance 76,948

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F6: Not applicable.

F5: This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.

Common Stock, par value $.01 per shareSEC Table I · non-derivativeIndirectBy Meaney 2024 Master Trust82,970 Reported balance Holding disclosure · report date 2026-10-01 · row 5 Holding and transaction disclosures are not merged.
1 source row

Row 5 · Balance 82,970

Common Stock, par value $.01 per shareSEC Table I · non-derivativeIndirectBy Meaney Master Trust #2212,680 Reported balance Holding disclosure · report date 2026-10-01 · row 6 Holding and transaction disclosures are not merged.
1 source row

Row 6 · Balance 212,680

Filing footnotes · ownership attribution and instrument terms

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F2: 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 $109.02 to $110.00, 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).

F3: The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated Common Stock were sold in multiple transactions at prices ranging from $110.02 to $111.02, 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)

F4: The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated Common Stock were sold in multiple transactions at prices ranging from $111.03 to $111.55, 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)

F5: This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.

F6: Not applicable.

STATE STREET CORP

Report date May 20, 2026 · Filed May 22, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect26,472 Reported balance After 2026-05-20 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 1 · 2026-05-20 · Grant · Acquired 1,526 · Balance 26,472

F1: Payment of Director's annual stock award.

F2: Includes Director's stock compensation dividend equivalents acquired through the date of this report.

Common StockSEC Table I · non-derivativeIndirectBy GST Trust30 Reported balance Holding disclosure · report date 2026-05-20 · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · Balance 30

F3: By a trust. The reporting person continues to report beneficial ownership of STT common stock held by the trust but disclaims beneficial ownership except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectBy Spousal Trust30 Reported balance Holding disclosure · report date 2026-05-20 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 30

F3: By a trust. The reporting person continues to report beneficial ownership of STT common stock held by the trust but disclaims beneficial ownership except to the extent of his pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: Payment of Director's annual stock award.

F2: Includes Director's stock compensation dividend equivalents acquired through the date of this report.

F3: By a trust. The reporting person continues to report beneficial ownership of STT common stock held by the trust but disclaims beneficial ownership except to the extent of his pecuniary interest therein.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
October 01, 2026 Filed Oct 5, 2026 20:09 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 38,474 Not disclosed Strike: $37.00 Not disclosed
Disclosure

SEC source: 0001566391-26-000026 · wk-form4_1791230991.xml · derivative · entry 7

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 76,948

Underlying: Common Stock, par value $.01 per share · 38,474 shares

Expires 2027-02-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F6 · price: Not applicable.

F5 · derivative.exercise_date: This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.

Read SEC document
October 01, 2026 Filed Oct 5, 2026 20:09 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 14,308 $111.18 $1,590,763.44
Disclosure

SEC source: 0001566391-26-000026 · wk-form4_1791230991.xml · nonDerivative · entry 4

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated Common Stock were sold in multiple transactions at prices ranging from $111.03 to $111.55, 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)

Read SEC document
October 01, 2026 Filed Oct 5, 2026 20:09 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 10,808 $110.56 $1,194,932.48
Disclosure

SEC source: 0001566391-26-000026 · wk-form4_1791230991.xml · nonDerivative · entry 3

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,308

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated Common Stock were sold in multiple transactions at prices ranging from $110.02 to $111.02, 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)

Read SEC document
October 01, 2026 Filed Oct 5, 2026 20:09 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 13,358 $109.57 $1,463,636.06
Disclosure

SEC source: 0001566391-26-000026 · wk-form4_1791230991.xml · nonDerivative · entry 2

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 25,116

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F2 · price: 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 $109.02 to $110.00, 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).

Read SEC document
October 01, 2026 Filed Oct 5, 2026 20:09 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionCommon Stock, par value $.01 per share 38,474 $37.00 $1,423,538.00
Disclosure

SEC source: 0001566391-26-000026 · wk-form4_1791230991.xml · nonDerivative · entry 1

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 38,474

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

Read SEC document
September 01, 2026 Filed Sep 2, 2026 20:27 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 38,474 Not disclosed Strike: $37.00 Not disclosed
Disclosure

SEC source: 0001566391-26-000024 · wk-form4_1788380823.xml · derivative · entry 8

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 115,422

Underlying: Common Stock, par value $.01 per share · 38,474 shares

Expires 2027-02-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F7 · price: Not applicable.

F6 · derivative.exercise_date: This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.

Read SEC document
September 01, 2026 Filed Sep 2, 2026 20:27 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 89 $116.00 $10,324.00
Disclosure

SEC source: 0001566391-26-000024 · wk-form4_1788380823.xml · nonDerivative · entry 5

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F5 · price: The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated Common Stock were sold in multiple transactions at prices ranging from $115.96 to $116.22, 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).

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September 01, 2026 Filed Sep 2, 2026 20:27 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 6,101 $115.00 $701,615.00
Disclosure

SEC source: 0001566391-26-000024 · wk-form4_1788380823.xml · nonDerivative · entry 4

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 89

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated Common Stock were sold in multiple transactions at prices ranging from $114.75 to $115.67, 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).

Read SEC document
September 01, 2026 Filed Sep 2, 2026 20:27 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 20,952 $114.14 $2,391,461.28
Disclosure

SEC source: 0001566391-26-000024 · wk-form4_1788380823.xml · nonDerivative · entry 3

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 6,190

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated Common Stock were sold in multiple transactions at prices ranging from $113.75 to $114.74, 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).

Read SEC document
September 01, 2026 Filed Sep 2, 2026 20:27 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 11,332 $113.45 $1,285,615.40
Disclosure

SEC source: 0001566391-26-000024 · wk-form4_1788380823.xml · nonDerivative · entry 2

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 27,142

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F2 · price: 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 $112.75 to $113.74, 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).

Read SEC document
September 01, 2026 Filed Sep 2, 2026 20:27 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionCommon Stock, par value $.01 per share 38,474 $37.00 $1,423,538.00
Disclosure

SEC source: 0001566391-26-000024 · wk-form4_1788380823.xml · nonDerivative · entry 1

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 38,474

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

Read SEC document
August 07, 2026 Filed Aug 10, 2026 20:12 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 38,474 Not disclosed Strike: $37.00 Not disclosed
Disclosure

SEC source: 0001566391-26-000022 · wk-form4_1786392745.xml · derivative · entry 7

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 153,896

Underlying: Common Stock, par value $.01 per share · 38,474 shares

Expires 2027-02-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F6 · price: Not applicable.

F5 · derivative.exercise_date: This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.

Read SEC document
August 07, 2026 Filed Aug 10, 2026 20:12 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 2,909 $122.75 $357,079.75
Disclosure

SEC source: 0001566391-26-000022 · wk-form4_1786392745.xml · nonDerivative · entry 4

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated Common Stock were sold in multiple transactions at prices ranging from $122.60 to $123.12, 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).

Read SEC document
August 07, 2026 Filed Aug 10, 2026 20:12 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 16,785 $122.11 $2,049,616.35
Disclosure

SEC source: 0001566391-26-000022 · wk-form4_1786392745.xml · nonDerivative · entry 3

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,909

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares of Iron Mountain Incorporated Common Stock were sold in multiple transactions at prices ranging from $121.56 to $122.56, 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).

Read SEC document
August 07, 2026 Filed Aug 10, 2026 20:12 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 18,780 $121.10 $2,274,258.00
Disclosure

SEC source: 0001566391-26-000022 · wk-form4_1786392745.xml · nonDerivative · entry 2

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 19,694

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F2 · price: 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 $120.56 to $121.55, 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).

Read SEC document
August 07, 2026 Filed Aug 10, 2026 20:12 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionCommon Stock, par value $.01 per share 38,474 $37.00 $1,423,538.00
Disclosure

SEC source: 0001566391-26-000022 · wk-form4_1786392745.xml · nonDerivative · entry 1

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 38,474

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

Read SEC document
July 01, 2026 Filed Jul 2, 2026 20:39 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 38,474 Not disclosed Strike: $37.00 Not disclosed
Disclosure

SEC source: 0001566391-26-000020 · wk-form4_1783024776.xml · derivative · entry 9

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 192,370

Underlying: Common Stock, par value $.01 per share · 38,474 shares

Expires 2027-02-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F8 · price: Not applicable.

F7 · derivative.exercise_date: This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.

Read SEC document
July 01, 2026 Filed Jul 2, 2026 20:39 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 2,530 $125.82 $318,324.60
Disclosure

SEC source: 0001566391-26-000020 · wk-form4_1783024776.xml · nonDerivative · entry 6

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F6 · price: The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $125.51 to $126.43, 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).

Read SEC document
July 01, 2026 Filed Jul 2, 2026 20:39 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 1,601 $124.72 $199,676.72
Disclosure

SEC source: 0001566391-26-000020 · wk-form4_1783024776.xml · nonDerivative · entry 5

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,530

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F5 · price: The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $124.44 to $125.38, 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).

Read SEC document
July 01, 2026 Filed Jul 2, 2026 20:39 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 7,173 $123.84 $888,304.32
Disclosure

SEC source: 0001566391-26-000020 · wk-form4_1783024776.xml · nonDerivative · entry 4

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,131

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $123.40 to 124.38, 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).

Read SEC document
July 01, 2026 Filed Jul 2, 2026 20:39 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 9,656 $122.84 $1,186,143.04
Disclosure

SEC source: 0001566391-26-000020 · wk-form4_1783024776.xml · nonDerivative · entry 3

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,304

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $122.40 to 123.39, 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).

Read SEC document
July 01, 2026 Filed Jul 2, 2026 20:39 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 17,514 $121.81 $2,133,380.34
Disclosure

SEC source: 0001566391-26-000020 · wk-form4_1783024776.xml · nonDerivative · entry 2

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,960

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F2 · price: 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 $121.40 to $122.39, 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).

Read SEC document
July 01, 2026 Filed Jul 2, 2026 20:39 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionCommon Stock, par value $.01 per share 38,474 $37.00 $1,423,538.00
Disclosure

SEC source: 0001566391-26-000020 · wk-form4_1783024776.xml · nonDerivative · entry 1

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 38,474

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

Read SEC document
June 01, 2026 Filed Jun 2, 2026 20:36 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 38,474 Not disclosed Strike: $37.00 Not disclosed
Disclosure

SEC source: 0001566391-26-000018 · wk-form4_1780432595.xml · derivative · entry 9

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 230,844

Underlying: Common Stock, par value $.01 per share · 38,474 shares

Expires 2027-02-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F8 · price: Not applicable.

F7 · derivative.exercise_date: This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.

Read SEC document
June 01, 2026 Filed Jun 2, 2026 20:36 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 1,091 $129.66 $141,459.06
Disclosure

SEC source: 0001566391-26-000018 · wk-form4_1780432595.xml · nonDerivative · entry 6

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F6 · price: The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $129.55 to $129.78, 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).

Read SEC document
June 01, 2026 Filed Jun 2, 2026 20:36 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 9,247 $129.14 $1,194,157.58
Disclosure

SEC source: 0001566391-26-000018 · wk-form4_1780432595.xml · nonDerivative · entry 5

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,091

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F5 · price: The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $128.55 to $129.54, 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).

Read SEC document
June 01, 2026 Filed Jun 2, 2026 20:36 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 7,523 $127.90 $962,191.70
Disclosure

SEC source: 0001566391-26-000018 · wk-form4_1780432595.xml · nonDerivative · entry 4

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 10,338

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $127.50 to $128.48, 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).

Read SEC document
June 01, 2026 Filed Jun 2, 2026 20:36 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 10,457 $127.00 $1,328,039.00
Disclosure

SEC source: 0001566391-26-000018 · wk-form4_1780432595.xml · nonDerivative · entry 3

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,861

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $126.50 to $127.48, 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).

Read SEC document
June 01, 2026 Filed Jun 2, 2026 20:36 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 10,156 $126.20 $1,281,687.20
Disclosure

SEC source: 0001566391-26-000018 · wk-form4_1780432595.xml · nonDerivative · entry 2

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 28,318

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F2 · price: 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 $125.49 to $126.48, 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).

Read SEC document
June 01, 2026 Filed Jun 2, 2026 20:36 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionCommon Stock, par value $.01 per share 38,474 $37.00 $1,423,538.00
Disclosure

SEC source: 0001566391-26-000018 · wk-form4_1780432595.xml · nonDerivative · entry 1

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 38,474

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

Read SEC document
May 20, 2026 Filed May 22, 2026 17:09 UTC STATE STREET CORP STT · Entity 242 GrantCommon Stock 1,526 $0.00 $0.00
Disclosure

SEC source: 0000093751-26-000357 · wk-form4_1779469737.xml · nonDerivative · entry 1

Meaney William L · CIK 0001566391 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,472

F1 · shares: Payment of Director's annual stock award.

F2 · balance_after: Includes Director's stock compensation dividend equivalents acquired through the date of this report.

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May 08, 2026 Filed May 12, 2026 20:10 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 38,474 Not disclosed Strike: $37.00 Not disclosed
Disclosure

SEC source: 0001566391-26-000016 · wk-form4_1778616607.xml · derivative · entry 6

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 269,318

Underlying: Common Stock, par value $.01 per share · 38,474 shares

Expires 2027-02-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F5 · price: Not applicable.

F4 · derivative.exercise_date: This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.

Read SEC document
May 08, 2026 Filed May 12, 2026 20:10 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 23,598 $129.19 $3,048,625.62
Disclosure

SEC source: 0001566391-26-000016 · wk-form4_1778616607.xml · nonDerivative · entry 3

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These Common Stock were sold in multiple transactions at prices ranging from $128.74 to $129.64, 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).

Read SEC document
May 08, 2026 Filed May 12, 2026 20:10 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 14,876 $128.52 $1,911,863.52
Disclosure

SEC source: 0001566391-26-000016 · wk-form4_1778616607.xml · nonDerivative · entry 2

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 23,598

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F2 · price: 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 $127.74 to $128.73, 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).

Read SEC document
May 08, 2026 Filed May 12, 2026 20:10 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionCommon Stock, par value $.01 per share 38,474 $37.00 $1,423,538.00
Disclosure

SEC source: 0001566391-26-000016 · wk-form4_1778616607.xml · nonDerivative · entry 1

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 38,474

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

Read SEC document
April 01, 2026 Filed Apr 2, 2026 20:22 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 38,474 Not disclosed Strike: $37.00 Not disclosed
Disclosure

SEC source: 0001566391-26-000014 · wk-form4_1775161366.xml · derivative · entry 5

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 307,792

Underlying: Common Stock, par value $.01 per share · 38,474 shares

Expires 2027-02-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F3 · price: Not applicable.

F2 · derivative.exercise_date: This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.

Read SEC document
April 01, 2026 Filed Apr 2, 2026 20:22 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 38,474 $102.71 $3,951,664.54
Disclosure

SEC source: 0001566391-26-000014 · wk-form4_1775161366.xml · nonDerivative · entry 2

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

Read SEC document
April 01, 2026 Filed Apr 2, 2026 20:22 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionCommon Stock, par value $.01 per share 38,474 $37.00 $1,423,538.00
Disclosure

SEC source: 0001566391-26-000014 · wk-form4_1775161366.xml · nonDerivative · entry 1

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 38,474

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

Read SEC document
March 05, 2026 Filed Mar 9, 2026 20:31 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 38,021 $107.02 $4,069,007.42
Disclosure

SEC source: 0001566391-26-000012 · wk-form4_1773088256.xml · nonDerivative · entry 3

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F4 · price: 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 $106.62 to $107.54, 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).

Read SEC document
March 05, 2026 Filed Mar 9, 2026 20:31 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 34,358 $106.15 $3,647,101.70
Disclosure

SEC source: 0001566391-26-000012 · wk-form4_1773088256.xml · nonDerivative · entry 2

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 38,021

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F3 · price: 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 $105.62 to $106.61, 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).

Read SEC document
March 05, 2026 Filed Mar 9, 2026 20:31 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 26,278 $105.26 $2,766,022.28
Disclosure

SEC source: 0001566391-26-000012 · wk-form4_1773088256.xml · nonDerivative · entry 1

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 72,379

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F2 · price: 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 $104.62 to $105.61, 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).

Read SEC document
March 04, 2026 Filed Mar 5, 2026 21:12 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 70,971 $107.52 $7,630,801.92
Disclosure

SEC source: 0001566391-26-000010 · wk-form4_1772745163.xml · nonDerivative · entry 6

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 98,657

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F7 · price: 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).

Read SEC document
March 04, 2026 Filed Mar 5, 2026 21:12 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 27,688 $106.96 $2,961,508.48
Disclosure

SEC source: 0001566391-26-000010 · wk-form4_1772745163.xml · nonDerivative · entry 5

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 169,628

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F6 · price: 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).

Read SEC document
March 03, 2026 Filed Mar 5, 2026 21:12 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 25,769 $107.94 $2,781,505.86
Disclosure

SEC source: 0001566391-26-000010 · wk-form4_1772745163.xml · nonDerivative · entry 4

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 197,316

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F5 · price: 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).

Read SEC document
March 03, 2026 Filed Mar 5, 2026 21:12 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 30,940 $107.43 $3,323,884.20
Disclosure

SEC source: 0001566391-26-000010 · wk-form4_1772745163.xml · nonDerivative · entry 3

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 223,085

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F4 · price: 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).

Read SEC document
March 03, 2026 Filed Mar 5, 2026 21:12 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 18,360 $106.33 $1,952,218.80
Disclosure

SEC source: 0001566391-26-000010 · wk-form4_1772745163.xml · nonDerivative · entry 2

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 254,025

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F3 · price: 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).

Read SEC document
March 03, 2026 Filed Mar 5, 2026 21:12 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 23,590 $105.25 $2,482,847.50
Disclosure

SEC source: 0001566391-26-000010 · wk-form4_1772745163.xml · nonDerivative · entry 1

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 272,385

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F2 · price: 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).

Read SEC document
March 02, 2026 Filed Mar 4, 2026 00:31 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 38,474 Not disclosed Strike: $37.00 Not disclosed
Disclosure

SEC source: 0001566391-26-000008 · wk-form4_1772584292.xml · derivative · entry 17

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 346,266

Underlying: Common Stock, par value $.01 per share · 38,474 shares

Expires 2027-02-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F16 · price: Not applicable.

F17 · derivative.exercise_date: This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested.

Read SEC document
March 02, 2026 Filed Mar 4, 2026 00:31 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 1,824 $110.64 $201,807.36
Disclosure

SEC source: 0001566391-26-000008 · wk-form4_1772584292.xml · nonDerivative · entry 12

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 295,975

F3 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F12 · price: 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 $110.40 to $110.81, 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 (12).

Read SEC document
March 02, 2026 Filed Mar 4, 2026 00:31 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 18,117 $110.02 $1,993,232.34
Disclosure

SEC source: 0001566391-26-000008 · wk-form4_1772584292.xml · nonDerivative · entry 11

Meaney William L · CIK 0001566391 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 297,799

F3 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F11 · price: 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 $109.40 to $110.40, 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 (11).

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.