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Matlock Robin

Disclosed activity across 2 companies

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17913
SEC CIK
0001781215

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
IRON MOUNTAIN INCIRM · Entity 517DirectorMay 07, 2026May 11, 2026
MSCI Inc.MSCI · Entity 3075DirectorAugust 28, 2026September 01, 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 May 07, 2026 · Filed May 11, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, par value $.01 per shareSEC Table I · non-derivativeDirect30,451.189 Reported balance After 2026-05-07 transaction · row 1
1 source row

Row 1 · 2026-05-07 · Grant · Acquired 1,892 · Balance 30,451.189

F1: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 7, 2026. The RSUs vest in their entirety on the grant date.

Filing footnotes · ownership attribution and instrument terms

F1: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 7, 2026. The RSUs vest in their entirety on the grant date.

MSCI Inc.

Report date August 28, 2026 · Filed September 01, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect2,037 Reported balance After 2026-08-28 transaction · row 1
1 source row

Row 1 · 2026-08-28 · Grant · Acquired 6 · Balance 2,037

F1: Shares acquired by the Reporting Person in connection with MSCI Inc.'s payment of a dividend. Of the shares reported, 1 share is attributable to the Reporting Person's unvested RSUs and remains subject to the same vesting conditions as the underlying RSUs. Pursuant to the MSCI Inc. Non-Employee Directors Deferral Plan, the Reporting Person has elected to defer receipt of the shares until the earlier of June 1, 2033 and the 60th day after such Reporting Person's "separation from service" as a director.

Filing footnotes · ownership attribution and instrument terms

F1: Shares acquired by the Reporting Person in connection with MSCI Inc.'s payment of a dividend. Of the shares reported, 1 share is attributable to the Reporting Person's unvested RSUs and remains subject to the same vesting conditions as the underlying RSUs. Pursuant to the MSCI Inc. Non-Employee Directors Deferral Plan, the Reporting Person has elected to defer receipt of the shares until the earlier of June 1, 2033 and the 60th day after such Reporting Person's "separation from service" as a director.

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 04, 2022 Filed Oct 5, 2022 21:10 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 45.162 $47.90 $2,163.28
Disclosure

SEC source: 0001020569-22-000189 · wf-form4_166500420064429.xml · derivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,542.769

Underlying: Common Stock · 45.162 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

F1 · derivative.exercise_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F1 · derivative.expiration_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

Read SEC document
August 31, 2022 Filed Sep 2, 2022 20:03 UTC MSCI Inc. MSCI · Entity 3075 GrantCommon Stock 1 $0.00 $0.00
Disclosure

SEC source: 0001209191-22-048468 · doc4.xml · nonDerivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 383

F1 · shares: Shares acquired by the Reporting Person in connection with MSCI Inc.'s payment of a dividend. Pursuant to the MSCI Inc. Non-Employee Directors Deferral Plan, the Reporting Person has elected to defer receipt of the shares until the earlier of June 1, 2033 and the 60th day after such Reporting Person's "separation from service" as a director.

Read SEC document
July 18, 2022 Filed Jul 20, 2022 20:04 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 43.173 $49.50 $2,136.85
Disclosure

SEC source: 0001020569-22-000145 · wf-form4_165834742823895.xml · derivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,497.607

Underlying: Common Stock · 43.173 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

F1 · derivative.exercise_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F1 · derivative.expiration_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F3 · balance_after: Includes a reduction of -3.8214 Phantom Shares to reconcile total beneficial ownership from prior reported transactions.

Read SEC document
June 01, 2022 Filed Jun 2, 2022 20:19 UTC MSCI Inc. MSCI · Entity 3075 GrantCommon Stock 382 $0.00 $0.00
Disclosure

SEC source: 0001209191-22-033522 · doc4.xml · nonDerivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 382

F1 · shares: Restricted stock units vesting on May 1, 2023. Pursuant to the MSCI Inc. Non-Employee Directors Deferral Plan, the Reporting Person has elected to defer receipt of the shares until the earlier of June 1, 2033 and the 60th day after such Reporting Person's "separation from service" as a director.

Read SEC document
May 10, 2022 Filed May 13, 2022 20:54 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantCommon Stock, par value $.01 per share 3,300 $0.01 $33.00
Disclosure

SEC source: 0001020569-22-000122 · wf-form4_165247520645923.xml · nonDerivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,910

F1 · shares: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 10, 2022. The RSUs vest on the grant date.

Read SEC document
April 06, 2022 Filed Apr 12, 2022 01:27 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 40.83 $56.23 $2,295.87
Disclosure

SEC source: 0001020569-22-000101 · wf-form4_164972683746796.xml · derivative · entry 4

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,458.2554

Underlying: Common Stock · 40.83 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F5 · derivative.exercise_date: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

F5 · derivative.expiration_date: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

Read SEC document
January 04, 2022 Filed Jan 11, 2022 02:13 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 50.5744 $51.46 $2,602.56
Disclosure

SEC source: 0001020569-22-000012 · wf-form4_164186719109999.xml · derivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,258.4254

Underlying: Common Stock · 50.5744 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

F1 · derivative.exercise_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F1 · derivative.expiration_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · derivative.underlying_shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

Read SEC document
January 04, 2022 Filed Apr 12, 2022 01:27 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionPhantom Stock · Derivative 841 $50.88 $42,788.65
Disclosure

SEC source: 0001020569-22-000101 · wf-form4_164972683746796.xml · derivative · entry 3

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,417.4254

Underlying: Common Stock · 841 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.

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F3 · shares: Settlement of the Phantom Shares is in cash.

F4 · derivative.exercise_date: Settlement of the Phantom Shares is made in accordance with distribution elections made by the Reporting Person or as otherwise provided in the Plan.

F4 · derivative.expiration_date: Settlement of the Phantom Shares is made in accordance with distribution elections made by the Reporting Person or as otherwise provided in the Plan.

Read SEC document
January 04, 2022 Filed Apr 12, 2022 01:27 UTC IRON MOUNTAIN INC IRM · Entity 517 Disposition to issuerCommon Stock, par value $.01 per share 841 $50.88 $42,788.65
Disclosure

SEC source: 0001020569-22-000101 · wf-form4_164972683746796.xml · nonDerivative · entry 2

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,610

F2 · shares: Represents Common Stock otherwise issuable to the Reporting Person for which cash was paid, based on the closing price of Common Stock on the New York Stock Exchange on the transaction date.

Read SEC document
January 04, 2022 Filed Apr 12, 2022 01:27 UTC IRON MOUNTAIN INC IRM · Entity 517 Exercise / conversionCommon Stock, par value $.01 per share 841 $0.00 $0.00
Disclosure

SEC source: 0001020569-22-000101 · wf-form4_164972683746796.xml · nonDerivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,451

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 · price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

Read SEC document
October 06, 2021 Filed Oct 8, 2021 21:18 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 58.4076 $43.94 $2,566.43
Disclosure

SEC source: 0001020569-21-000230 · wf-form4_163372788083760.xml · derivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,207.851

Underlying: Common Stock · 58.4076 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

F1 · derivative.exercise_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F1 · derivative.expiration_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · derivative.underlying_shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

Read SEC document
July 06, 2021 Filed Jul 8, 2021 20:20 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 59.5107 $42.51 $2,529.62
Disclosure

SEC source: 0001020569-21-000187 · wf-form4_162577558747575.xml · derivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,149.4434

Underlying: Common Stock · 59.5107 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

F1 · derivative.exercise_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F1 · derivative.expiration_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

Read SEC document
May 12, 2021 Filed May 14, 2021 20:37 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantCommon Stock, par value $.01 per share 3,933 $0.01 $39.33
Disclosure

SEC source: 0001020569-21-000159 · wf-form4_162102460352719.xml · nonDerivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,610

F1 · shares: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 12, 2021. The RSUs vest on the grant date.

Read SEC document
April 06, 2021 Filed Apr 8, 2021 21:16 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 66.9416 $37.17 $2,488.25
Disclosure

SEC source: 0001020569-21-000116 · wf-form4_161791655165547.xml · derivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,089.9327

Underlying: Common Stock · 66.9416 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

F1 · derivative.exercise_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F1 · derivative.expiration_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

Read SEC document
January 06, 2021 Filed Jan 9, 2021 01:20 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 81.8237 $29.79 $2,437.62
Disclosure

SEC source: 0001020569-21-000016 · wf-form4_161015518928957.xml · derivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,022.9911

Underlying: Common Stock · 81.8237 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

F1 · derivative.exercise_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F1 · derivative.expiration_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

Read SEC document
October 09, 2020 Filed Oct 13, 2020 22:57 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 986.0809 $28.50 $28,105.48
Disclosure

SEC source: 0001020569-20-000206 · wf-form4_160262983242326.xml · derivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,941.1674

Underlying: Common Stock · 986.0809 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · shares: These shares give effect to the Reporting Person's quarterly cash compensation for services on the Iron Mountain Incorporated board of directors as if reinvested in Phantom Shares.

F1 · derivative.exercise_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F1 · derivative.expiration_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · derivative.underlying_shares: These shares give effect to the Reporting Person's quarterly cash compensation for services on the Iron Mountain Incorporated board of directors as if reinvested in Phantom Shares.

Read SEC document
October 02, 2020 Filed Oct 6, 2020 20:44 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 66.0291 $27.06 $1,786.91
Disclosure

SEC source: 0001020569-20-000199 · wf-form4_160201707694382.xml · derivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,955.0865

Underlying: Common Stock · 66.0291 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

F1 · derivative.exercise_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F1 · derivative.expiration_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · derivative.underlying_shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

Read SEC document
July 09, 2020 Filed Jul 10, 2020 21:00 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 1,036.3906 $26.00 $26,946.16
Disclosure

SEC source: 0001020569-20-000174 · wf-form4_159441478651897.xml · derivative · entry 2

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,889.0574

Underlying: Common Stock · 1,036.3906 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F3 · shares: These shares give effect to the Reporting Person's quarterly cash compensation for services on the Iron Mountain Incorporated board of directors as if reinvested in Phantom Shares.

F1 · derivative.exercise_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F1 · derivative.expiration_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F3 · derivative.underlying_shares: These shares give effect to the Reporting Person's quarterly cash compensation for services on the Iron Mountain Incorporated board of directors as if reinvested in Phantom Shares.

Read SEC document
July 02, 2020 Filed Jul 10, 2020 21:00 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 43.4563 $25.75 $1,119.00
Disclosure

SEC source: 0001020569-20-000174 · wf-form4_159441478651897.xml · derivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,852.6668

Underlying: Common Stock · 43.4563 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

F1 · derivative.exercise_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F1 · derivative.expiration_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · derivative.underlying_shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

Read SEC document
May 13, 2020 Filed May 15, 2020 21:51 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantCommon Stock, par value $.01 per share 7,011 $0.01 $70.11
Disclosure

SEC source: 0001020569-20-000149 · wf-form4_158957949838005.xml · nonDerivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,677

F1 · shares: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 13, 2020. The RSUs vest on the grant date.

Read SEC document
April 14, 2020 Filed Apr 16, 2020 20:31 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 950.8349 $26.93 $25,605.98
Disclosure

SEC source: 0001020569-20-000121 · wf-form4_158706909323384.xml · derivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,809.2105

Underlying: Common Stock · 950.8349 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · shares: These shares give effect to the Reporting Person's quarterly cash compensation for services on the Iron Mountain Incorporated board of directors as if reinvested in Phantom Shares.

F1 · derivative.exercise_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F1 · derivative.expiration_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · derivative.underlying_shares: These shares give effect to the Reporting Person's quarterly cash compensation for services on the Iron Mountain Incorporated board of directors as if reinvested in Phantom Shares.

Read SEC document
April 06, 2020 Filed Apr 8, 2020 21:02 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 23.5763 $21.90 $516.32
Disclosure

SEC source: 0001020569-20-000114 · wf-form4_158637973727664.xml · derivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 858.3756

Underlying: Common Stock · 23.5763 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

F1 · derivative.exercise_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F1 · derivative.expiration_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · derivative.underlying_shares: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

Read SEC document
January 13, 2020 Filed Jan 14, 2020 21:54 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantPhantom Stock · Derivative 834.7993 $30.68 $25,608.14
Disclosure

SEC source: 0001020569-20-000021 · wf-form4_157903885232693.xml · derivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 834.7993

Underlying: Common Stock · 834.7993 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · shares: These shares give effect to the Reporting Person's quarterly cash compensation for services on the Iron Mountain Incorporated board of directors as if reinvested in Phantom Shares.

F1 · derivative.exercise_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F1 · derivative.expiration_date: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2 · derivative.underlying_shares: These shares give effect to the Reporting Person's quarterly cash compensation for services on the Iron Mountain Incorporated board of directors as if reinvested in Phantom Shares.

Read SEC document
July 01, 2019 Filed Jul 2, 2019 20:34 UTC IRON MOUNTAIN INC IRM · Entity 517 GrantCommon Stock, par value $.01 per share 4,666 $0.01 $46.66
Disclosure

SEC source: 0001020569-19-000177 · wf-form4_156209967973520.xml · nonDerivative · entry 1

Matlock Robin · CIK 0001781215 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,666

F1 · shares: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on July 1, 2019. The RSUs vest on the grant date.

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.