Company:  OSIRIS THERAPEUTICS, INC. (OSIR)
Form Type:  10-Q
Filing Date:  5/7/2010 
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: 
$10.65  
Change: 
0.37 (3.60%)  
Trade Time: 
04:00 PM EST  
Market Cap: 
$350.73M
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 ...
      Item 4. Controls and Procedures.
    PART II - OTHER INFORMATION
      Item 1. Legal Proceedings.
      Item 1A. Risk Factors.
      Item 2. Unregistered Sales of ...
      Item 3. Defaults Upon Senior ...
      Item 5. Other Information.
      Item 6. Exhibits.
    SIGNATURES
  EXHIBIT 31.1.1
    Certification of Principal Executive Officer
  EXHIBIT 31.2.1
    Certification of Principal Financial Officer
  EXHIBIT 32.1
    Certification