FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * MAST ERLE T   2. Issuer Name and Ticker or Trading Symbol Clovis Oncology, Inc. [CLVS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Executive VP and CFO (Last) (First) (Middle) C/O CLOVIS ONCOLOGY, INC., 2525 28TH STREET, SUITE 100 3. Date of Earliest Transaction (Month/Day/Year) 11/21/2011 (Street) BOULDER, CO 80301 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 11/21/2011   C   2,378 A (1) 203,528 D   Common Stock 11/21/2011   C   2,378 A (1) 205,906 D   Common Stock 11/21/2011   C   5,147 A (1) 211,053 D   Common Stock 11/21/2011   C   2,207 A (2) 213,260 D   Common Stock 11/21/2011   P   5,323 A $ 13 218,583 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Underlying Securities (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Series A-1 Convertible Preferred Stock	(1)	11/21/2011		C			6,897	(1)	(1)	Common Stock	2,378	$ 0	0	D
Series A-2 Convertible Preferred Stock	(1)	11/21/2011		C			6,897	(1)	(1)	Common Stock	2,378	$ 0	0	D
Series B Convertible Preferred Stock	(1)	11/21/2011		C			14,928	(1)	(1)	Common Stock	5,147	$ 0	0	D
Convertible Promissory Notes	$ 13	11/21/2011		C			$ 28,000 (2)	(2)	(2)	Common Stock	2,207 (2)	$ 0	0	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MAST ERLE T C/O CLOVIS ONCOLOGY, INC. 2525 28TH STREET, SUITE 100 BOULDER, CO 80301			Executive VP and CFO

Signatures

/s/ Erle T. Mast		11/21/2011
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The reported securities were convertible at any time, in whole or in part, at the option of the reporting person, had no expiration date, and automatically converted into shares of Common Stock on November 21, 2011, the closing of the Issuer's initial public offering, on a 2.9 for 1 basis.
(2)	The outstanding $28,000 principal amount of these 5% convertible promissory notes due May 25, 2012 and all accrued and unpaid interest thereon from and after May 25, 2011 automatically converted into shares of Common Stock on November 21, 2011, the closing of the Issuer's initial public offering, at a conversion price of $13.00, the per share price to the public of the Common Stock sold in the Issuer's initial public offering.

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