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

 4/28/11  Rothblatt Martine A               4          Dir.,Off.²  1:14K  United Therapeutics Corp.         Computershare Inc.       
 4/28/11  United Therapeutics Corp.         8-K:2,9     4/28/11    2:190K                                   Toppan Merrill/FA        
 4/28/11  United Therapeutics Corp.         10-Q        3/31/11   35:4.8M                                   Toppan Merrill/FA        

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¹	Filing/Form Types:  -K
	4	Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 4 { 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 }.
	10-Q	Quarterly Report — Form 10-Q.
²	Insider:  The Filer is a Director, Officer, 10% Owner and/or Other “insider” of the Issuer.