13G Filing: Viking Global and Calithera Biosciences Inc. (CALA)

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
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Schedule 13G/A
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INFORMATION TO BE INCLUDED IN STATEMENTS PURSUANT TO RULES 13d-1(b),(c)
AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2
UNDER THE SECURITIES EXCHANGE ACT OF 1934*

(Amendment No. 1)

Calithera Biosciences, Inc.
(Name of Issuer)

Common stock, $0.0001 par value per share
(Title of Class of Securities)

13089P101
(CUSIP Number)

July 1, 2017
(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
[ ] Rule 13d-1(b)
[X] Rule 13d-1(c)
[ ] Rule 13d-1(d)

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* The remainder of this cover page shall be filled out for a reporting
person’s initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not
be deemed to be “filed” for the purpose of Section 18 of the Securities
Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that
section of the Act but shall be subject to all other provisions of the Act
(however, see the Notes).