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These shares were sold in multiple transactions at prices ranging from $19.4851 to $19.50, inclusive. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price for all transactions reported on this Form 4."}],"balance_after":230006,"source":{"system":"sec-edgar","filing":"0001802461-25-000006","document":"wk-form4_1758234206.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1061630/000180246125000006/wk-form4_1758234206.xml","form_type":"4"}},{"id":1050405,"issuer":{"id":4404,"kind":"organization","name":"BLACKSTONE MORTGAGE TRUST, INC."},"owners":[{"id":45885,"kind":"person","name":"Keenan Katharine A","position":1,"cik":"0001802461","reported_name":"Keenan Katharine A","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Class A Common Stock","published_at":"2025-09-03T22:32:52.000Z","date":"2025-09-02","kind":"sale","planned":true,"acquired":false,"shares":2315,"price":19.2536,"value":44572.084,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on August 8, 2024 to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.25  to $19.26, inclusive. The Reporting Person  undertakes to provide, upon request by the Securities and Exchange Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price for all transactions reported on this Form 4."}],"balance_after":234599,"source":{"system":"sec-edgar","filing":"0001802461-25-000004","document":"wk-form4_1756938769.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1061630/000180246125000004/wk-form4_1756938769.xml","form_type":"4"}},{"id":1106783,"issuer":{"id":4404,"kind":"organization","name":"BLACKSTONE MORTGAGE TRUST, INC."},"owners":[{"id":45885,"kind":"person","name":"Keenan Katharine A","position":1,"cik":"0001802461","reported_name":"Keenan Katharine A","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Class A Common Stock","published_at":"2025-06-19T00:18:53.000Z","date":"2025-06-17","kind":"sale","planned":true,"acquired":false,"shares":6931,"price":19.1316,"value":132601.1196,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to two Rule 10b5-1 trading plans adopted on August 8, 2024  and March 18, 2025 to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.0500 to $19.2150, inclusive. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price for all transactions reported on this Form 4."}],"balance_after":236914,"source":{"system":"sec-edgar","filing":"0001061630-25-000071","document":"wk-form4_1750292327.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1061630/000106163025000071/wk-form4_1750292327.xml","form_type":"4"}},{"id":1128165,"issuer":{"id":4404,"kind":"organization","name":"BLACKSTONE MORTGAGE TRUST, INC."},"owners":[{"id":45885,"kind":"person","name":"Keenan Katharine A","position":1,"cik":"0001802461","reported_name":"Keenan Katharine A","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Class A Common Stock","published_at":"2025-06-02T20:10:03.000Z","date":"2025-05-30","kind":"sale","planned":true,"acquired":false,"shares":2327,"price":18.915,"value":44015.205,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on August 8, 2024 to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards."}],"balance_after":243845,"source":{"system":"sec-edgar","filing":"0001061630-25-000063","document":"wk-form4_1748894997.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1061630/000106163025000063/wk-form4_1748894997.xml","form_type":"4"}},{"id":1201550,"issuer":{"id":4404,"kind":"organization","name":"BLACKSTONE MORTGAGE TRUST, INC."},"owners":[{"id":45885,"kind":"person","name":"Keenan Katharine A","position":1,"cik":"0001802461","reported_name":"Keenan Katharine A","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Class A Common Stock","published_at":"2025-03-18T21:53:45.000Z","date":"2025-03-17","kind":"sale","planned":true,"acquired":false,"shares":2315,"price":20.6967,"value":47912.8605,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on August 8, 2024 to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $20.6925 to $20.705, inclusive. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares purchased at each separate price for all transactions reported on this Form 4."}],"balance_after":246172,"source":{"system":"sec-edgar","filing":"0001061630-25-000036","document":"wk-form4_1742334818.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1061630/000106163025000036/wk-form4_1742334818.xml","form_type":"4"}},{"id":1231214,"issuer":{"id":4404,"kind":"organization","name":"BLACKSTONE MORTGAGE TRUST, INC."},"owners":[{"id":45885,"kind":"person","name":"Keenan Katharine A","position":1,"cik":"0001802461","reported_name":"Keenan Katharine A","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Class A Common Stock","published_at":"2025-03-04T23:00:05.000Z","date":"2025-03-03","kind":"sale","planned":true,"acquired":false,"shares":2323,"price":20.7,"value":48086.1,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on August 8, 2024 to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards."}],"balance_after":248487,"source":{"system":"sec-edgar","filing":"0001061630-25-000032","document":"wk-form4_1741129197.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1061630/000106163025000032/wk-form4_1741129197.xml","form_type":"4"}},{"id":1329546,"issuer":{"id":4404,"kind":"organization","name":"BLACKSTONE MORTGAGE TRUST, INC."},"owners":[{"id":45885,"kind":"person","name":"Keenan Katharine A","position":1,"cik":"0001802461","reported_name":"Keenan Katharine A","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Class A Common Stock","published_at":"2024-12-17T23:22:41.000Z","date":"2024-12-15","kind":"grant","planned":false,"acquired":true,"shares":51850,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of restricted class A common stock of the Issuer granted pursuant to the Issuer's Stock Incentive Plan."}],"balance_after":250810,"source":{"system":"sec-edgar","filing":"0001061630-24-000162","document":"wk-form4_1734477755.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1061630/000106163024000162/wk-form4_1734477755.xml","form_type":"4"}},{"id":1439853,"issuer":{"id":4404,"kind":"organization","name":"BLACKSTONE MORTGAGE TRUST, INC."},"owners":[{"id":45885,"kind":"person","name":"Keenan Katharine A","position":1,"cik":"0001802461","reported_name":"Keenan Katharine A","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Class A Common Stock","published_at":"2024-08-06T21:22:33.000Z","date":"2024-08-05","kind":"purchase","planned":false,"acquired":true,"shares":16000,"price":17.1646,"value":274633.6,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. 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The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price for all transactions reported on this Form 4."}],"balance_after":187468,"source":{"system":"sec-edgar","filing":"0001061630-24-000074","document":"wk-form4_1718143442.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1061630/000106163024000074/wk-form4_1718143442.xml","form_type":"4"}},{"id":1497005,"issuer":{"id":4404,"kind":"organization","name":"BLACKSTONE MORTGAGE TRUST, INC."},"owners":[{"id":45885,"kind":"person","name":"Keenan Katharine A","position":1,"cik":"0001802461","reported_name":"Keenan Katharine A","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Class A Common Stock","published_at":"2024-05-31T21:14:13.000Z","date":"2024-05-30","kind":"sale","planned":true,"acquired":false,"shares":2259,"price":17.0423,"value":38498.5557,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on March 15, 2024 to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.0401 to $17.0450, inclusive. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price for all transactions reported on this Form 4."}],"balance_after":189764,"source":{"system":"sec-edgar","filing":"0001061630-24-000071","document":"wk-form4_1717190044.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1061630/000106163024000071/wk-form4_1717190044.xml","form_type":"4"}},{"id":1582046,"issuer":{"id":4404,"kind":"organization","name":"BLACKSTONE MORTGAGE TRUST, INC."},"owners":[{"id":45885,"kind":"person","name":"Keenan Katharine A","position":1,"cik":"0001802461","reported_name":"Keenan Katharine A","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Class A Common Stock","published_at":"2024-03-12T22:48:49.000Z","date":"2024-03-11","kind":"sale","planned":false,"acquired":false,"shares":2275,"price":20.2486,"value":46065.565,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person prior to February 27, 2023 to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards."}],"balance_after":192023,"source":{"system":"sec-edgar","filing":"0001061630-24-000039","document":"wk-form4_1710283719.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1061630/000106163024000039/wk-form4_1710283719.xml","form_type":"4"}},{"id":1607976,"issuer":{"id":4404,"kind":"organization","name":"BLACKSTONE MORTGAGE TRUST, INC."},"owners":[{"id":45885,"kind":"person","name":"Keenan Katharine A","position":1,"cik":"0001802461","reported_name":"Keenan Katharine A","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Class A Common Stock","published_at":"2024-03-01T22:35:11.000Z","date":"2024-03-01","kind":"sale","planned":false,"acquired":false,"shares":2274,"price":20.4207,"value":46436.6718,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person prior to February 27, 2023 to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $20.4201 to $20.4250, inclusive. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares purchased at each separate price for all transactions reported on this Form 4."}],"balance_after":194298,"source":{"system":"sec-edgar","filing":"0001061630-24-000034","document":"wk-form4_1709332496.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1061630/000106163024000034/wk-form4_1709332496.xml","form_type":"4"}},{"id":1710013,"issuer":{"id":4404,"kind":"organization","name":"BLACKSTONE MORTGAGE TRUST, INC."},"owners":[{"id":45885,"kind":"person","name":"Keenan Katharine A","position":1,"cik":"0001802461","reported_name":"Keenan Katharine A","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Class A Common Stock","published_at":"2023-12-16T00:11:13.000Z","date":"2023-12-15","kind":"grant","planned":false,"acquired":true,"shares":52000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of restricted class A common stock of the Issuer granted pursuant to the Issuer's Stock Incentive Plan."}],"balance_after":196572,"source":{"system":"sec-edgar","filing":"0001061630-23-000082","document":"wk-form4_1702685465.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1061630/000106163023000082/wk-form4_1702685465.xml","form_type":"4"}},{"id":1715015,"issuer":{"id":4404,"kind":"organization","name":"BLACKSTONE MORTGAGE TRUST, INC."},"owners":[{"id":45885,"kind":"person","name":"Keenan Katharine A","position":1,"cik":"0001802461","reported_name":"Keenan Katharine A","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO & President"}}],"security":"Class A Common Stock","published_at":"2023-12-12T22:35:10.000Z","date":"2023-12-11","kind":"sale","planned":false,"acquired":false,"shares":2274,"price":21.2254,"value":48266.5596,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person prior to February 27, 2023 to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. 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