13D Filing: Baker Bros. Advisors and Bellicum Pharmaceuticals Inc (NASDAQ:BLCM)

Page 3 of 9 – SEC Filing

CUSIP No.  079481107 Page   3   of  9   Pages

1.

NAMES OF REPORTING PERSONS

Baker Bros. Advisors (GP) LLC

2.

CHECK
THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

(a) p

(b)
p

3.

SEC USE ONLY

4.

SOURCE OF FUNDS*

OO

5.

CHECK
BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)
o

6.

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING
PERSON
WITH

7.

   SOLE VOTING POWER 5,032,313

8.

SHARED VOTING POWER: 0

9.

SOLE DISPOSITIVE POWER: 5,032,313

10.

SHARED DISPOSITIVE POWER: 0

11.

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:
5,032,313

12.

CHECK
BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
p

13.

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

15.3% (1)

14.

TYPE OF REPORTING PERSON (See Instructions)

HC, OO

(1) Based on 32,905,565 shares of common stock that will be
outstanding following the Offering (as defined below) including 750,000 shares issued as part of the Underwriter’s (as defined
below) option reported in the Issuer’s Prospectus filed with the SEC on March 24, 2017.

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