Blueprint Medicines Corp (BPMC) Stock: Deerfield Management Reports New 4.51% Stake

Page 7 of 12 – SEC Filing

CUSIP No.

09627Y109

13G

Page 8 of 10 Pages

(g)

o

A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G);

(h)		o	A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act;

(i)

o

A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act;

(j)

o

A non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J);

 

k)

o

Group, in accordance with Rule 13d-1(b)(1)(ii)(K).

 

If filing as a non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J), please specify the type of institution: _________________

 

Item 4.

Ownership.

 

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

 

(a)			Amount beneficially owned**:
			Deerfield Mgmt, L.P. –  1,231,343 shares Deerfield Management Company, L.P. –  1,231,343 shares Deerfield Partners, L.P. –  539,328 shares Deerfield International Master Fund, L.P. –  692,015 shares James E. Flynn –  1,231,343 shares
(b)			Percent of class**:
			Deerfield Mgmt, L.P. – 4.51% Deerfield Management Company, L.P. – 4.51% Deerfield Partners, L.P. – 1.98% Deerfield International Master Fund, L.P. – 2.54% James E. Flynn – 4.51%

 

(c)			Number of shares as to which such person has**:
			(i)	Sole power to vote or to direct the vote	All Reporting Persons – 0
			(ii)	Shared power to vote or to direct the vote	Deerfield Mgmt, L.P. –  1,231,343 Deerfield Management Company, L.P. –  1,231,343 Deerfield Partners, L.P. –   539,328 Deerfield International Master Fund, L.P. –  692,015 James E. Flynn –  1,231,343

      

			(iii)	Sole power to dispose or to direct the disposition of	All Reporting Persons – 0
			(iv)	Shared power to dispose or to direct the disposition of	Deerfield Mgmt, L.P. –  1,231,343 Deerfield Management Company, L.P. –  1,231,343 Deerfield Partners, L.P. –   539,328 Deerfield International Master Fund, L.P. –  692,015 James E. Flynn –  1,231,343

 

**See footnotes on cover pages which are incorporated by reference herein.