SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
Blackstone Holdings III L.P.

(Last) (First) (Middle)
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE

(Street)
NEW YORK NY 10154

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
BLACKSTONE MORTGAGE TRUST, INC. [ BXMT ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
05/29/2013
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Class A Common Stock 05/29/2013 P 1,960,784 A $25.5 2,460,784 (1) I See Footnotes (2) (3) (4)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
1. Name and Address of Reporting Person*
Blackstone Holdings III L.P.

(Last) (First) (Middle)
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE

(Street)
NEW YORK NY 10154

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Blackstone Holdings III GP L.P.

(Last) (First) (Middle)
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE

(Street)
NEW YORK NY 10154

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Blackstone Holdings III GP Management L.L.C.

(Last) (First) (Middle)
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE

(Street)
NEW YORK NY 10154

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Blackstone Group L.P.

(Last) (First) (Middle)
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE

(Street)
NEW YORK NY 10154

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Blackstone Group Management L.L.C.

(Last) (First) (Middle)
C/O THE BLACKSTONE GROUP
345 PARK AVENUE

(Street)
NEW YORK NY 10154

(City) (State) (Zip)
1. Name and Address of Reporting Person*
SCHWARZMAN STEPHEN A

(Last) (First) (Middle)
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE

(Street)
NEW YORK NY 10154

(City) (State) (Zip)
Explanation of Responses:
1. 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.
2. 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.
3. 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.
4. 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.
BLACKSTONE HOLDINGS III L.P., By: Blackstone Holdings III GP L.P., its general partner, By: Blackstone Holdings III GP Management L.L.C., its general partner, By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 05/30/2013
BLACKSTONE HOLDINGS III GP L.P., By: Blackstone Holdings III GP Management L.L.C., its general partner, By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 05/30/2013
BLACKSTONE HOLDINGS III GP MANAGEMENT L.L.C., By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 05/30/2013
THE BLACKSTONE GROUP L.P., By: Blackstone Group Management L.L.C., its general partner, By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 05/30/2013
BLACKSTONE GROUP MANAGEMENT L.L.C., By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 05/30/2013
/s/ STEPHEN A. SCHWARZMAN 05/30/2013
** Signature of Reporting Person Date
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