BXMT

SEC source: 0001209191-16-147738 · doc4.xml · nonDerivative · entry 1

Armer Douglas N. · CIK 0001595261 · Treasurer, Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 38,824

F1 · shares: Represents sale of shares to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards.

SEC source: 0001209191-16-147740 · doc4.xml · nonDerivative · entry 1

Ruffing Thomas C · CIK 0001371769 · Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,313

F1 · shares: Represents sale of shares to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards.

SEC source: 0001209191-16-147739 · doc4.xml · nonDerivative · entry 1

Marone Anthony F. JR · CIK 0001587738 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,728

F1 · shares: Represents sale of shares to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards.

SEC source: 0001209191-16-146083 · doc4.xml · nonDerivative · entry 1

SAGALYN LYNNE B · CIK 0001195695 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,736

F1 · shares: Represents Class A Common Stock Units in lieu of dividends payable on Class A Common Stock Units owned by the Reporting Person, which convert to shares of Class A Common Stock on a one-for-one basis. The number of Class A Common Stock Units was calculated by dividing (1) the product of the number of Class A Common Stock Units owned by the Reporting Person and the $0.62 per share dollar amount of the Class A Common Stock dividend paid by the Company on October 14, 2016 by (2) the closing price of the Company's Class A Common Stock on October 14, 2016

SEC source: 0001209191-16-146081 · doc4.xml · nonDerivative · entry 1

EDELMAN MARTIN L · CIK 0001047252 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,736

F1 · shares: Represents Class A Common Stock Units in lieu of dividends payable on Class A Common Stock Units owned by the Reporting Person, which convert to shares of Class A Common Stock on a one-for-one basis. The number of Class A Common Stock Units was calculated by dividing (1) the product of the number of Class A Common Stock Units owned by the Reporting Person and the $0.62 per share dollar amount of the Class A Common Stock dividend paid by the Company on October 14, 2016 by (2) the closing price of the Company's Class A Common Stock on October 14, 2016.

SEC source: 0001209191-16-146082 · doc4.xml · nonDerivative · entry 1

NASSAU HENRY N · CIK 0001177127 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,766

F1 · shares: Represents Class A Common Stock Units in lieu of dividends payable on Class A Common Stock Units owned by the Reporting Person, which convert to shares of Class A Common Stock on a one-for-one basis. The number of Class A Common Stock Units was calculated by dividing (1) the product of the number of Class A Common Stock Units owned by the Reporting Person and the $0.62 per share dollar amount of the Class A Common Stock dividend paid by the Company on October 14, 2016 by (2) the closing price of the Company's Class A Common Stock on October 14, 2016.

SEC source: 0001209191-16-146080 · doc4.xml · nonDerivative · entry 1

DOBROWSKI THOMAS E · CIK 0001203060 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 38,074

F1 · shares: Represents Class A Common Stock Units in lieu of dividends payable on Class A Common Stock Units owned by the Reporting Person, which convert to shares of Class A Common Stock on a one-for-one basis. The number of Class A Common Stock Units was calculated by dividing (1) the product of the number of Class A Common Stock Units owned by the Reporting Person and the $0.62 per share dollar amount of the Class A Common Stock dividend paid by the Company on October 14, 2016 by (2) the closing price of the Company's Class A Common Stock on October 14, 2016.

SEC source: 0001209191-16-146079 · doc4.xml · nonDerivative · entry 1

Cotton Leonard W · CIK 0001373685 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,681

F1 · shares: Represents Class A Common Stock Units in lieu of dividends payable on Class A Common Stock Units owned by the Reporting Person, which convert to shares of Class A Common Stock on a one-for-one basis. The number of Class A Common Stock Units was calculated by dividing (1) the product of the number of Class A Common Stock Units owned by the Reporting Person and the $0.62 per share dollar amount of the Class A Common Stock dividend paid by the Company on October 14, 2016 by (2) the closing price of the Company's Class A Common Stock on October 14, 2016.

SEC source: 0001209191-16-143413 · doc4.xml · nonDerivative · entry 1

SAGALYN LYNNE B · CIK 0001195695 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,787

F1 · price: Represents an award of Class A Common Stock Units in lieu of retainer and meeting fees that convert to shares of Class A Common Stock on a one-for-one basis as determined at the time of the grant. The number of shares of Class A Common Stock subject to the award was calculated by dividing $18,750 in retainer and meeting fees by the average adjusted closing price for the third quarter of 2016.

SEC source: 0001209191-16-143412 · doc4.xml · nonDerivative · entry 1

NASSAU HENRY N · CIK 0001177127 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,104

F1 · price: Represents an award of Class A Common Stock Units in lieu of retainer and meeting fees that convert to shares of Class A Common Stock on a one-for-one basis as determined at the time of the grant. The number of shares of Class A Common Stock subject to the award was calculated by dividing $18,750 in retainer and meeting fees by the average adjusted closing price for the third quarter of 2016.

SEC source: 0001209191-16-143410 · doc4.xml · nonDerivative · entry 1

DOBROWSKI THOMAS E · CIK 0001203060 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,269

F1 · price: Represents an award of Class A Common Stock Units in lieu of retainer and meeting fees that convert to shares of Class A Common Stock on a one-for-one basis as determined at the time of the grant. The number of shares of Class A Common Stock subject to the award was calculated by dividing $18,750 in retainer and meeting fees by the average adjusted closing price for the third quarter of 2016.

SEC source: 0001209191-16-143411 · doc4.xml · nonDerivative · entry 1

EDELMAN MARTIN L · CIK 0001047252 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,787

F1 · price: Represents an award of Class A Common Stock Units in lieu of retainer and meeting fees that convert to shares of Class A Common Stock on a one-for-one basis as determined at the time of the grant. The number of shares of Class A Common Stock subject to the award was calculated by dividing $18,750 in retainer and meeting fees by the average adjusted closing price for the third quarter of 2016.

SEC source: 0001209191-16-143409 · doc4.xml · nonDerivative · entry 1

Cotton Leonard W · CIK 0001373685 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,540

F1 · price: Represents an award of Class A Common Stock Units in lieu of retainer and meeting fees that convert to shares of Class A Common Stock on a one-for-one basis as determined at the time of the grant. The number of shares of Class A Common Stock subject to the award was calculated by dividing $18,750 in retainer and meeting fees by the average adjusted closing price for the third quarter of 2016.

SEC source: 0001209191-16-143408 · doc4.xml · nonDerivative · entry 1

Ruffing Thomas C · CIK 0001371769 · Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,432

F1 · shares: Represents sale of shares to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards.

SEC source: 0001209191-16-143407 · doc4.xml · nonDerivative · entry 1

Marone Anthony F. JR · CIK 0001587738 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,906

F1 · shares: Represents sale of shares to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards.

SEC source: 0001209191-16-143406 · doc4.xml · nonDerivative · entry 1

Armer Douglas N. · CIK 0001595261 · Treasurer, Managing Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,537

F1 · shares: Represents sale of shares to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards.

SEC source: 0001181431-13-031683 · rrd381674.xml · nonDerivative · entry 1

Blackstone Holdings III L.P. · CIK 0001404073 · 10% owner

Blackstone Holdings III GP L.P. · CIK 0001478809 · 10% owner

Blackstone Holdings III GP Management L.L.C. · CIK 0001478815 · 10% owner

Blackstone Group L.P. · CIK 0001393818 · 10% owner

Blackstone Group Management L.L.C. · CIK 0001404071 · 10% owner

SCHWARZMAN STEPHEN A · CIK 0001070844 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 2,460,784

F1 · balance_after: On May 6, 2013, the Class A Common Stock, par value $0.01 per share (the "Class A Common Stock"), of Blackstone Mortgage Trust, Inc. was adjusted to reflect a one-for-ten reverse stock split, and the new share total reflects the stock split, including the reporting persons' receipt of cash in lieu of a fractional share.

F2 · ownership.nature: Represents shares of Class A Common Stock held directly by Blackstone Holdings III L.P. Blackstone Holdings III GP L.P. is the general partner of Blackstone Holdings III L.P. Blackstone Holdings III GP Management L.L.C. is the general partner of Blackstone Holdings III GP L.P. The Blackstone Group L.P. is the managing member of Blackstone Holdings III GP Management L.L.C. Blackstone Group Management L.L.C. is the general partner of The Blackstone Group L.P. Blackstone Group Management L.L.C. is wholly owned by its senior managing directors and controlled by its founder, Stephen A. Schwarzman.

F3 · ownership.nature: Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F4 · ownership.nature: Each of such Reporting Persons may be deemed to beneficially own the shares beneficially owned directly by Blackstone Holdings III L.P., but each of the Reporting Persons, other than Blackstone Holdings III L.P. as to its direct holdings of shares, disclaims beneficial ownership of the shares held by Blackstone Holdings III L.P. except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons, other than Blackstone Holdings III L.P. as to its direct holdings of shares, states that the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 of the Securities Exchange Act of 1934 or for any other purpose.