13G Filing: James E. Flynn and Biocryst Pharmaceuticals Inc (BCRX)

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Page 3 of 14 – SEC Filing

CUSIP No.

09058V103

13G Page 3
of 11 Pages
1.

NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

Deerfield Management
Company, L.P.

2.

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

(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

5,478,719 (2)

7.

SOLE DISPOSITIVE POWER

0

8.

SHARED DISPOSITIVE POWER

5,478,719 (2)

9.

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

5,478,719 (2)

10.

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES*

11.

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

6.81%

12.

TYPE OF REPORTING PERSON*

PN

(2) Comprised of an aggregate of 4,978,719 shares of common
stock and options to purchase 500,000 shares of common stock held by Deerfield Partners, L.P., Deerfield Special Situations Fund,
L.P. and Deerfield International Master Fund, L.P., of which Deerfield Management Company, L.P. is the investment advisor.

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