Vitae Pharmaceuticals Inc (VTAE): RA Capital Management Ups Its Stake

Page 2 of 7 – SEC Filing

CUSIP No. 92847N103

13G

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). RA Capital Management, LLC
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a) ¨
		(b) ¨
	3.	SEC Use Only
	4.	Citizenship or Place of Organization         Massachusetts

Number of Shares Beneficially Owned by Each Reporting Person With	5.	Sole Voting Power                         0
	6.	Shared Voting Power             2,119,036
	7.	Sole Dispositive Power                 0
	8.	Shared Dispositive Power      2,119,036

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 2,119,036
	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)     ¨
	11.	Percent of Class Represented by Amount in Row (9) 7.3%1
	12.	Type of Reporting Person (See Instructions) IA

¹
The reporting person is the beneficial owner of 2,119,036 shares of Common Stock which constitutes approximately
7.3% of the Issuer’s outstanding Common Stock shares. The percentage calculation assumes that there are currently 28,841,067
outstanding Common Stock shares of the Issuer, based on the Issuer’s 10-Q as filed with the Securities and Exchange Commission
(“SEC”) on July 29, 2016.