Company:  OSIRIS THERAPEUTICS, INC. (OSIR)
Form Type:  10-Q
Filing Date:  8/9/2011 
CIK:  0001360886 
Address:  7015 ALBERT EINSTEIN DRIVE 
City, State, Zip:  COLUMBIA, Maryland 21046 
Telephone:  443-545-1819 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$11.27  
Change: 
0.67 (6.32%)  
Trade Time: 
May 17  
Market Cap: 
$371.14M
Description of Business
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  FORM 10-Q
    PART I - FINANCIAL INFORMATION
      Item 1. Financial Statements - Unaudited
        BALANCE SHEET
        INCOME STATEMENT
        STOCKHOLDERS EQUITY
        CASH FLOW
        NOTES TO UNAUDITED CONDENSED FINANCIAL STATEMENTS
      Item 2. Management's Discussion and ...
      Item 3. Quantitative and Qualitative ...
      Item 4 . Controls and Procedures.
    PART II - OTHER INFORMATION
      Item 1. Legal Proceedings.
      Item 1A. Risk Factors.
      Item 2 . Unregistered Sales of Equity ...
      Item 3. Defaults Upon Senior Securities.
      Item 5 . Other Information.
      Item 6. Exhibits.
    SIGNATURES
  EXHIBIT 10.1
  EXHIBIT 31.1.1
    Certification of Principal Executive Officer
  EXHIBIT 31.2.1
    Certification of Principal Financial Officer
  EXHIBIT 32.1
    Certification