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

Page 4 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 Healthcare Fund, L.P.


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         Delaware

Number of
Shares
Beneficially
Owned by
Each Reporting
Person With
5. Sole Voting Power                         0

6. Shared Voting Power              1,718,343

7. Sole Dispositive Power                 0

8. Shared Dispositive Power      1,718,343

9.

Aggregate Amount Beneficially Owned by Each Reporting Person

1,718,343


10.

Check if the Aggregate
Amount in Row (9) Excludes Certain Shares (See Instructions)
     ¨


11.

Percent of Class Represented by Amount in Row (9)

6.0%3


12.

Type of Reporting Person (See Instructions)

PN (Limited Partnership)


3
The reporting person is the beneficial owner of 1,718,343 shares of Common Stock which constitutes approximately 6.0% 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.

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