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Bhargava Mithu

Disclosed activity across 1 company

Tapewire entity
56673
SEC CIK
0002045996

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
IRON MOUNTAIN INCIRM · Entity 517EVP, GM Digital Business UnitMarch 19, 2026March 23, 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 March 19, 2026 · Filed March 23, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, par value $.01 per shareSEC Table I · non-derivativeDirect16,054 Ending reported balance After 2026-03-19 transaction · row 5
5 source rows · reconciled sequence

Row 1 · 2026-03-19 · Sale · Disposed 14,260 · Balance 61,519

F1: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 19, 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 $103.62 to $104.61, 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).

Row 2 · 2026-03-19 · Sale · Disposed 12,537 · Balance 48,982

F1: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 19, 2025.

F3: 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 $104.62 to $105.56, 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).

Row 3 · 2026-03-19 · Sale · Disposed 20 · Balance 48,962

F1: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 19, 2025.

Row 4 · 2026-03-19 · Sale · Disposed 20,462 · Balance 28,500

F1: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 19, 2025.

F4: 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 $103.71 to $104.70, 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).

Row 5 · 2026-03-19 · Sale · Disposed 12,446 · Balance 16,054

F1: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 19, 2025.

F5: 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 $104.71 to $105.56, 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 (5).

Filing footnotes · ownership attribution and instrument terms

F1: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 19, 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 $103.62 to $104.61, 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).

F3: 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 $104.62 to $105.56, 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).

F4: 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 $103.71 to $104.70, 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: 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 $104.71 to $105.56, 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 (5).

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
March 19, 2026 Filed Mar 23, 2026 20:14 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 12,446 $105.13 $1,308,447.98
Disclosure

SEC source: 0002045996-26-000007 · wk-form4_1774296869.xml · nonDerivative · entry 5

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 16,054

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 19, 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 $104.71 to $105.56, 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 (5).

Read SEC document
March 19, 2026 Filed Mar 23, 2026 20:14 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 20,462 $104.30 $2,134,186.60
Disclosure

SEC source: 0002045996-26-000007 · wk-form4_1774296869.xml · nonDerivative · entry 4

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 28,500

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 19, 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 $103.71 to $104.70, 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 19, 2026 Filed Mar 23, 2026 20:14 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 20 $105.64 $2,112.80
Disclosure

SEC source: 0002045996-26-000007 · wk-form4_1774296869.xml · nonDerivative · entry 3

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 48,962

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 19, 2025.

Read SEC document
March 19, 2026 Filed Mar 23, 2026 20:14 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 12,537 $105.04 $1,316,886.48
Disclosure

SEC source: 0002045996-26-000007 · wk-form4_1774296869.xml · nonDerivative · entry 2

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 48,982

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 19, 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 $104.62 to $105.56, 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
March 19, 2026 Filed Mar 23, 2026 20:14 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 14,260 $104.25 $1,486,605.00
Disclosure

SEC source: 0002045996-26-000007 · wk-form4_1774296869.xml · nonDerivative · entry 1

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 61,519

F1 · kind: The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 19, 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 $103.62 to $104.61, 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 01, 2026 Filed Mar 4, 2026 00:15 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantRestricted Stock Units · Derivative 9,692 $0.00 $0.00
Disclosure

SEC source: 0002045996-26-000004 · wk-form4_1772583349.xml · derivative · entry 13

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,692

Underlying: Common Stock, par value $.01 per share · 9,692 shares

Expires not disclosed

F11 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Common Stock.

F14 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 9,692 shares of Common Stock, were granted to the Reporting Person on March 1, 2026 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F14 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 9,692 shares of Common Stock, were granted to the Reporting Person on March 1, 2026 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:15 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionRestricted Stock Units · Derivative 2,754 $0.00 $0.00
Disclosure

SEC source: 0002045996-26-000004 · wk-form4_1772583349.xml · derivative · entry 12

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,510

Underlying: Common Stock, par value $.01 per share · 2,754 shares

Expires not disclosed

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.

F11 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Common Stock.

F13 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 8,264 shares of Common Stock, were granted to the Reporting Person on March 1, 2025 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F13 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 8,264 shares of Common Stock, were granted to the Reporting Person on March 1, 2025 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:15 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionRestricted Stock Units · Derivative 2,663 $0.00 $0.00
Disclosure

SEC source: 0002045996-26-000004 · wk-form4_1772583349.xml · derivative · entry 11

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $.01 per share · 2,663 shares

Expires not disclosed

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.

F11 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Common Stock.

F12 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 7,987 shares of Common Stock, were granted to the Reporting Person on March 1, 2023 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F12 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 7,987 shares of Common Stock, were granted to the Reporting Person on March 1, 2023 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:15 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionPerformance Units · Derivative 61,113 $0.00 $0.00
Disclosure

SEC source: 0002045996-26-000004 · wk-form4_1772583349.xml · derivative · entry 10

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $.01 per share · 61,113 shares

Expires not disclosed

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.

F8 · derivative.exercise_price: Each PU represents a contingent right to receive one share of Common Stock.

F10 · derivative.exercise_date: The PUs were initially granted to the Reporting Person on July 3, 2023. Effective as of February 16, 2026, the Compensation Committee determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2026.

F10 · derivative.expiration_date: The PUs were initially granted to the Reporting Person on July 3, 2023. Effective as of February 16, 2026, the Compensation Committee determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2026.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:15 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionPerformance Units · Derivative 51,919 $0.00 $0.00
Disclosure

SEC source: 0002045996-26-000004 · wk-form4_1772583349.xml · derivative · entry 9

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $.01 per share · 51,919 shares

Expires not disclosed

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.

F8 · derivative.exercise_price: Each PU represents a contingent right to receive one share of Common Stock.

F9 · derivative.exercise_date: The PUs were initially granted to the Reporting Person on March 1, 2023. Effective as of February 16, 2026, the Compensation Committee determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2026.

F9 · derivative.expiration_date: The PUs were initially granted to the Reporting Person on March 1, 2023. Effective as of February 16, 2026, the Compensation Committee determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2026.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:15 UTC IRON MOUNTAIN INC IRM · Entity 517 Tax withholdingCommon Stock, par value $.01 per share 1,331 $108.33 $144,187.23
Disclosure

SEC source: 0002045996-26-000004 · wk-form4_1772583349.xml · nonDerivative · entry 8

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,779

F6 · shares: Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding obligation in connection with the net settlement of the RSUs and does not represent a sale.

F2 · balance_after: Includes 201 shares of Common Stock acquired under the Iron Mountain Incorporated Employee Stock Purchase Plan since the last Section 16 filing by the Reporting Person.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:15 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionCommon Stock, par value $.01 per share 2,754 $0.00 $0.00
Disclosure

SEC source: 0002045996-26-000004 · wk-form4_1772583349.xml · nonDerivative · entry 7

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,110

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.

F7 · shares: This acquisition is reported to reflect the partial vesting of RSUs previously granted to the Reporting Person on March 1, 2025.

F2 · balance_after: Includes 201 shares of Common Stock acquired under the Iron Mountain Incorporated Employee Stock Purchase Plan since the last Section 16 filing by the Reporting Person.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:15 UTC IRON MOUNTAIN INC IRM · Entity 517 Tax withholdingCommon Stock, par value $.01 per share 1,287 $108.33 $139,420.71
Disclosure

SEC source: 0002045996-26-000004 · wk-form4_1772583349.xml · nonDerivative · entry 6

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,356

F6 · shares: Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding obligation in connection with the net settlement of the RSUs and does not represent a sale.

F2 · balance_after: Includes 201 shares of Common Stock acquired under the Iron Mountain Incorporated Employee Stock Purchase Plan since the last Section 16 filing by the Reporting Person.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:15 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionCommon Stock, par value $.01 per share 2,663 $0.00 $0.00
Disclosure

SEC source: 0002045996-26-000004 · wk-form4_1772583349.xml · nonDerivative · entry 5

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,643

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.

F5 · shares: This acquisition is reported to reflect the full vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2023.

F2 · balance_after: Includes 201 shares of Common Stock acquired under the Iron Mountain Incorporated Employee Stock Purchase Plan since the last Section 16 filing by the Reporting Person.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:15 UTC IRON MOUNTAIN INC IRM · Entity 517 Tax withholdingCommon Stock, par value $.01 per share 28,205 $108.33 $3,055,447.65
Disclosure

SEC source: 0002045996-26-000004 · wk-form4_1772583349.xml · nonDerivative · entry 4

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,980

F3 · shares: Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding obligation in connection with the net settlement of the PUs and does not represent a sale.

F2 · balance_after: Includes 201 shares of Common Stock acquired under the Iron Mountain Incorporated Employee Stock Purchase Plan since the last Section 16 filing by the Reporting Person.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:15 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionCommon Stock, par value $.01 per share 61,113 $0.00 $0.00
Disclosure

SEC source: 0002045996-26-000004 · wk-form4_1772583349.xml · nonDerivative · entry 3

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 101,185

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.

F4 · shares: This acquisition is reported to reflect the full vesting of PUs previously granted to the Reporting Person on July 3, 2023. Effective February 16, 2026, the Compensation Committee of Iron Mountain Incorporated's Board of Directors determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2026.

F2 · balance_after: Includes 201 shares of Common Stock acquired under the Iron Mountain Incorporated Employee Stock Purchase Plan since the last Section 16 filing by the Reporting Person.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:15 UTC IRON MOUNTAIN INC IRM · Entity 517 Tax withholdingCommon Stock, par value $.01 per share 25,102 $108.33 $2,719,299.66
Disclosure

SEC source: 0002045996-26-000004 · wk-form4_1772583349.xml · nonDerivative · entry 2

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,072

F3 · shares: Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding obligation in connection with the net settlement of the PUs and does not represent a sale.

F2 · balance_after: Includes 201 shares of Common Stock acquired under the Iron Mountain Incorporated Employee Stock Purchase Plan since the last Section 16 filing by the Reporting Person.

Read SEC document
March 01, 2026 Filed Mar 4, 2026 00:15 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionCommon Stock, par value $.01 per share 51,919 $0.00 $0.00
Disclosure

SEC source: 0002045996-26-000004 · wk-form4_1772583349.xml · nonDerivative · entry 1

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,174

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 · shares: This acquisition is reported to reflect the full vesting of performance units ("PUs") previously granted to the Reporting Person on March 1, 2023. Effective February 16, 2026, the Compensation Committee of Iron Mountain Incorporated's Board of Directors determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2026.

F2 · balance_after: Includes 201 shares of Common Stock acquired under the Iron Mountain Incorporated Employee Stock Purchase Plan since the last Section 16 filing by the Reporting Person.

Read SEC document
February 16, 2026 Filed Feb 18, 2026 22:18 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPerformance Units · Derivative 43,652 $0.00 $0.00
Disclosure

SEC source: 0002045996-26-000002 · wk-form4_1771453103.xml · derivative · entry 2

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 61,113

Underlying: Common Stock, par value $.01 per share · 43,652 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Performance Unit ("PU") represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F4 · shares: The PUs were initially granted to the Reporting Person on July 3, 2023. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 16, 2026, of the actual award of PUs under the grant after completion of the relevant performance period.

F5 · derivative.exercise_date: The PU were initially granted to the Reporting Person on July 3, 2023, and will fully vest on March 1, 2026.

F5 · derivative.expiration_date: The PU were initially granted to the Reporting Person on July 3, 2023, and will fully vest on March 1, 2026.

Read SEC document
February 16, 2026 Filed Feb 18, 2026 22:18 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPerformance Units · Derivative 37,085 $0.00 $0.00
Disclosure

SEC source: 0002045996-26-000002 · wk-form4_1771453103.xml · derivative · entry 1

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,919

Underlying: Common Stock, par value $.01 per share · 37,085 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Performance Unit ("PU") represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F2 · shares: The PUs were initially granted to the Reporting Person on March 1, 2023. This Form 4 is being filed to reflect the determination by the Compensation Committee, effective as of February 16, 2026, of the actual award of PUs under the grant after completion of the relevant performance period.

F3 · derivative.exercise_date: The PU were initially granted to the Reporting Person on March 1, 2023, and will fully vest on March 1, 2026.

F3 · derivative.expiration_date: The PU were initially granted to the Reporting Person on March 1, 2023, and will fully vest on March 1, 2026.

Read SEC document
March 03, 2025 Filed Mar 5, 2025 00:58 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 1,738 $92.84 $161,355.92
Disclosure

SEC source: 0001020569-25-000058 · wk-form4_1741136296.xml · nonDerivative · entry 3

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,054

Read SEC document
March 01, 2025 Filed Mar 5, 2025 00:58 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantRestricted Stock Units · Derivative 8,264 $0.00 $0.00
Disclosure

SEC source: 0001020569-25-000058 · wk-form4_1741136296.xml · derivative · entry 5

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,264

Underlying: Common Stock · 8,264 shares

Expires not disclosed

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Common Stock.

F4 · derivative.exercise_date: The RSU, representing a contingent right to receive a total of 8,264 shares of Common Stock, were granted to the Reporting Person on March 1, 2025 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F4 · derivative.expiration_date: The RSU, representing a contingent right to receive a total of 8,264 shares of Common Stock, were granted to the Reporting Person on March 1, 2025 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

Read SEC document
March 01, 2025 Filed Mar 5, 2025 00:58 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionRestricted Stock Units · Derivative 2,662 $0.00 $0.00
Disclosure

SEC source: 0001020569-25-000058 · wk-form4_1741136296.xml · derivative · entry 4

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,663

Underlying: Common Stock · 2,662 shares

Expires not disclosed

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.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Common Stock.

F3 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 7,987 shares of Common Stock, were granted to the Reporting Person on March 1, 2023 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F3 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 7,987 shares of Common Stock, were granted to the Reporting Person on March 1, 2023 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

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March 01, 2025 Filed Mar 5, 2025 00:58 UTC IRON MOUNTAIN INC IRM · Entity 517 Tax withholdingCommon Stock, par value $.01 per share 924 $93.17 $86,089.08
Disclosure

SEC source: 0001020569-25-000058 · wk-form4_1741136296.xml · nonDerivative · entry 2

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,792

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March 01, 2025 Filed Mar 5, 2025 00:58 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionCommon Stock, par value $.01 per share 2,662 $0.00 $0.00
Disclosure

SEC source: 0001020569-25-000058 · wk-form4_1741136296.xml · nonDerivative · entry 1

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,716

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 · shares: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2023.

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December 23, 2024 Filed Dec 26, 2024 13:12 UTC IRON MOUNTAIN INC IRM · Entity 517 SaleCommon Stock, par value $.01 per share 8,263 $104.49 $863,400.87
Disclosure

SEC source: 0001020569-24-000269 · wk-form4_1735218752.xml · nonDerivative · entry 1

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,054

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December 20, 2024 Filed Dec 23, 2024 21:41 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionRestricted Stock Units · Derivative 14,967 $0.00 $0.00
Disclosure

SEC source: 0001020569-24-000267 · wk-form4_1734990055.xml · derivative · entry 3

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 14,967 shares

Expires not disclosed

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 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F4 · derivative.exercise_date: The RSUs, representing a contingent right to receive a total of 29,934 shares of Common Stock, were granted to the Reporting Person on December 20, 2022 and vest in two substantially equal annual installments beginning on the first anniversary of the grant date.

F4 · derivative.expiration_date: The RSUs, representing a contingent right to receive a total of 29,934 shares of Common Stock, were granted to the Reporting Person on December 20, 2022 and vest in two substantially equal annual installments beginning on the first anniversary of the grant date.

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December 20, 2024 Filed Dec 23, 2024 21:41 UTC IRON MOUNTAIN INC IRM · Entity 517 Tax withholdingCommon Stock, par value $.01 per share 6,704 $105.10 $704,590.40
Disclosure

SEC source: 0001020569-24-000267 · wk-form4_1734990055.xml · nonDerivative · entry 2

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 21,317

F2 · balance_after: Includes 211 shares acquired by the Reporting Person through the Company's Employee Stock Purchase Plan since the last reported transaction.

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December 20, 2024 Filed Dec 23, 2024 21:41 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionCommon Stock, par value $.01 per share 14,967 $0.00 $0.00
Disclosure

SEC source: 0001020569-24-000267 · wk-form4_1734990055.xml · nonDerivative · entry 1

Bhargava Mithu · CIK 0002045996 · EVP, GM Digital Business Unit

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 28,021

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 · shares: This acquisition is reported to reflect the full vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on December 20, 2022.

F2 · balance_after: Includes 211 shares acquired by the Reporting Person through the Company's Employee Stock Purchase Plan since the last reported transaction.

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