As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

  6/2/04  Berkley W R Corp.                 3          10% Owner²  1:4K   Blackstone Mortgage Trust, Inc.                            
 5/11/04  Polan Joshua A                    3          Director²   1:3K   Blackstone Mortgage Trust, Inc.   Berkley W R Corp.        
 5/11/04  Blackstone Mortgage Trust, Inc.   424B5                  1:434K                                   Paul Hastings LLP/FA     
 5/11/04  Blackstone Mortgage Trust, Inc.   8-K:5,7,9   5/11/04    7:193K                                   Paul Hastings LLP/FA     
 5/11/04  Blackstone Mortgage Trust, Inc.   DEF 14A     6/17/04    1:214K                                   Paul Hastings LLP/FA     

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¹	Filing/Form Types:
	3	Initial Statement of Beneficial Ownership of Securities by an Insider — Form 3 { The Filer is an Insider² of the Issuer }.
	8-K	Current Report — Form 8-K { Item 1: Business & Operations;  2: Financial Info;  3: Securities & Trading;  4: Accountants & Accounting;  5: Governance & Management;  6: Asset-Backed Securities;  7: Disclosures;  8: Events;  9: Financials — Pre-8/23/04... Item 1: Control;  2: Assets;  3: Bankruptcy;  4: Accountants;  5: Events;  6: Resignations;  7: Financials;  8: FY;  9: Regs. FD & S;  10: Ethics;  11: Suspensions;  12: Results;  13: Notices }.
	424B5	Prospectus – Primary Offering or Shelf Securities – New Facts or Events.
	DEF 14A	Definitive Proxy Statement — Schedule 14A.
²	Insider:  The Filer is a Director, Officer, 10% Owner and/or Other “insider” of the Issuer.