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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)"}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001566391-26-000026","document":"wk-form4_1791230991.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1566391/000156639126000026/wk-form4_1791230991.xml","form_type":"4"}},{"id":4629919,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2026-10-05T20:09:56.000Z","date":"2026-10-01","kind":"sale","planned":true,"acquired":false,"shares":10808,"price":110.56,"value":1194932.48,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. 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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)."}],"balance_after":25116,"source":{"system":"sec-edgar","filing":"0001566391-26-000026","document":"wk-form4_1791230991.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1566391/000156639126000026/wk-form4_1791230991.xml","form_type":"4"}},{"id":4629917,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2026-10-05T20:09:56.000Z","date":"2026-10-01","kind":"exercise","planned":true,"acquired":true,"shares":38474,"price":37,"value":1423538.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025."}],"balance_after":38474,"source":{"system":"sec-edgar","filing":"0001566391-26-000026","document":"wk-form4_1791230991.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1566391/000156639126000026/wk-form4_1791230991.xml","form_type":"4"}},{"id":631,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Employee Stock Option (Right to Buy)","published_at":"2026-09-02T20:27:07.000Z","date":"2026-09-01","kind":"exercise","planned":true,"acquired":false,"shares":38474,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested."}],"balance_after":115422,"derivative":{"exercise_price":37,"expiration_date":"2027-02-16","underlying":"Common Stock, par value $.01 per share","underlying_shares":38474},"source":{"system":"sec-edgar","filing":"0001566391-26-000024","document":"wk-form4_1788380823.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1566391/000156639126000024/wk-form4_1788380823.xml","form_type":"4"}},{"id":630,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2026-09-02T20:27:07.000Z","date":"2026-09-01","kind":"sale","planned":true,"acquired":false,"shares":89,"price":116,"value":10324.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. 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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)."}],"balance_after":27142,"source":{"system":"sec-edgar","filing":"0001566391-26-000024","document":"wk-form4_1788380823.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1566391/000156639126000024/wk-form4_1788380823.xml","form_type":"4"}},{"id":626,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2026-09-02T20:27:07.000Z","date":"2026-09-01","kind":"exercise","planned":true,"acquired":true,"shares":38474,"price":37,"value":1423538.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025."}],"balance_after":38474,"source":{"system":"sec-edgar","filing":"0001566391-26-000024","document":"wk-form4_1788380823.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1566391/000156639126000024/wk-form4_1788380823.xml","form_type":"4"}},{"id":692317,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Employee Stock Option (Right to Buy)","published_at":"2026-08-10T20:12:28.000Z","date":"2026-08-07","kind":"exercise","planned":true,"acquired":false,"shares":38474,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested."}],"balance_after":153896,"derivative":{"exercise_price":37,"expiration_date":"2027-02-16","underlying":"Common Stock, par value $.01 per share","underlying_shares":38474},"source":{"system":"sec-edgar","filing":"0001566391-26-000022","document":"wk-form4_1786392745.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000156639126000022/wk-form4_1786392745.xml","form_type":"4"}},{"id":692316,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2026-08-10T20:12:28.000Z","date":"2026-08-07","kind":"sale","planned":true,"acquired":false,"shares":2909,"price":122.75,"value":357079.75,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"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)."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001566391-26-000022","document":"wk-form4_1786392745.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000156639126000022/wk-form4_1786392745.xml","form_type":"4"}},{"id":692315,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2026-08-10T20:12:28.000Z","date":"2026-08-07","kind":"sale","planned":true,"acquired":false,"shares":16785,"price":122.11,"value":2049616.35,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"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)."}],"balance_after":2909,"source":{"system":"sec-edgar","filing":"0001566391-26-000022","document":"wk-form4_1786392745.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000156639126000022/wk-form4_1786392745.xml","form_type":"4"}},{"id":692314,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2026-08-10T20:12:28.000Z","date":"2026-08-07","kind":"sale","planned":true,"acquired":false,"shares":18780,"price":121.1,"value":2274258.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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. 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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)."}],"balance_after":72379,"source":{"system":"sec-edgar","filing":"0001566391-26-000012","document":"wk-form4_1773088256.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000156639126000012/wk-form4_1773088256.xml","form_type":"4"}},{"id":859491,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2026-03-05T21:12:46.000Z","date":"2026-03-04","kind":"sale","planned":true,"acquired":false,"shares":70971,"price":107.52,"value":7630801.92,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. 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These shares of Common Stock were sold in multiple transactions at prices ranging from $109.40 to $110.40, inclusive. 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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)."}],"balance_after":12673,"source":{"system":"sec-edgar","filing":"0001566391-26-000002","document":"wk-form4_1767741131.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000156639126000002/wk-form4_1767741131.xml","form_type":"4"}},{"id":948245,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2026-01-06T23:12:15.000Z","date":"2026-01-02","kind":"exercise","planned":true,"acquired":true,"shares":38482,"price":37,"value":1423834.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025."}],"balance_after":38482,"source":{"system":"sec-edgar","filing":"0001566391-26-000002","document":"wk-form4_1767741131.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000156639126000002/wk-form4_1767741131.xml","form_type":"4"}},{"id":982442,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Employee Stock Option (Right to Buy)","published_at":"2025-12-03T23:07:54.000Z","date":"2025-12-01","kind":"exercise","planned":true,"acquired":false,"shares":69125,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"This stock option, initially representing a right to purchase a total of 829,506 shares, is fully vested."}],"balance_after":0,"derivative":{"exercise_price":36.588,"expiration_date":"2026-02-18","underlying":"Common Stock, par value $.01 per share","underlying_shares":69125},"source":{"system":"sec-edgar","filing":"0001566391-25-000010","document":"wk-form4_1764803271.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000156639125000010/wk-form4_1764803271.xml","form_type":"4"}},{"id":982441,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2025-12-03T23:07:54.000Z","date":"2025-12-01","kind":"sale","planned":true,"acquired":false,"shares":10569,"price":83.934,"value":887098.446,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. 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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)."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001566391-25-000010","document":"wk-form4_1764803271.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000156639125000010/wk-form4_1764803271.xml","form_type":"4"}},{"id":982440,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2025-12-03T23:07:54.000Z","date":"2025-12-01","kind":"sale","planned":true,"acquired":false,"shares":58556,"price":83.229,"value":4873557.324,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 $82.730 to $83.720, inclusive. 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These shares of Common Stock were sold in multiple transactions at prices ranging from $103.510 to $103.805, inclusive. The Reporting\nPerson 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\nCommon Stock sold at each separate price within the ranges set forth in this footnote (4)"}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001566391-25-000008","document":"wk-form4_1762377112.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000156639125000008/wk-form4_1762377112.xml","form_type":"4"}},{"id":1007197,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2025-11-05T21:11:55.000Z","date":"2025-11-03","kind":"sale","planned":true,"acquired":false,"shares":35678,"price":102.922,"value":3672051.116,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"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 $102.485 to $103.470, inclusive. The Reporting\nPerson 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\nCommon Stock sold at each separate price within the ranges set forth in this footnote (3)."}],"balance_after":10828,"source":{"system":"sec-edgar","filing":"0001566391-25-000008","document":"wk-form4_1762377112.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000156639125000008/wk-form4_1762377112.xml","form_type":"4"}},{"id":1007196,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2025-11-05T21:11:55.000Z","date":"2025-11-03","kind":"sale","planned":true,"acquired":false,"shares":22619,"price":102.02,"value":2307590.38,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 $101.475 to $102.475, 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\nExchange 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)."}],"balance_after":46506,"source":{"system":"sec-edgar","filing":"0001566391-25-000008","document":"wk-form4_1762377112.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000156639125000008/wk-form4_1762377112.xml","form_type":"4"}},{"id":1007195,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2025-11-05T21:11:55.000Z","date":"2025-11-03","kind":"exercise","planned":true,"acquired":true,"shares":69125,"price":36.588,"value":2529145.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2023."}],"balance_after":69125,"source":{"system":"sec-edgar","filing":"0001566391-25-000008","document":"wk-form4_1762377112.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000156639125000008/wk-form4_1762377112.xml","form_type":"4"}},{"id":1025497,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Employee Stock Option (Right to Buy)","published_at":"2025-10-03T20:05:38.000Z","date":"2025-10-01","kind":"exercise","planned":true,"acquired":false,"shares":69125,"price":36.588,"value":2529145.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2023."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"This stock option, representing a right to purchase a total of 829,506 shares, is fully vested."}],"balance_after":138250,"derivative":{"exercise_price":36.588,"expiration_date":"2026-02-18","underlying":"Common Stock, par value $.01 per share","underlying_shares":69125},"source":{"system":"sec-edgar","filing":"0001566391-25-000006","document":"wk-form4_1759521934.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000156639125000006/wk-form4_1759521934.xml","form_type":"4"}},{"id":1025496,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2025-10-03T20:05:38.000Z","date":"2025-10-01","kind":"sale","planned":true,"acquired":false,"shares":40062,"price":102.599,"value":4110321.138,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"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 $102.290 to $103.260, inclusive. 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These shares of Common Stock were sold in multiple transactions at prices ranging from $98.880 to $99.465, 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)."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001020569-25-000141","document":"wk-form4_1748981184.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000102056925000141/wk-form4_1748981184.xml","form_type":"4"}},{"id":1126084,"issuer":{"id":517,"kind":"organization","name":"IRON MOUNTAIN INC","symbol":"IRM"},"owners":[{"id":575,"kind":"person","name":"Meaney William L","position":1,"cik":"0001566391","reported_name":"Meaney William L","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock, par value $.01 per share","published_at":"2025-06-03T20:06:34.000Z","date":"2025-06-02","kind":"sale","planned":true,"acquired":false,"shares":24230,"price":98.61,"value":2389320.3,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 $97.880 to $98.877, 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 (2)."}],"balance_after":36248,"source":{"system":"sec-edgar","filing":"0001020569-25-000141","document":"wk-form4_1748981184.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1020569/000102056925000141/wk-form4_1748981184.xml","form_type":"4"}}],"next_cursor":"2025-06-03T20:06:34.000000Z,1126084"}