SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Canaan VIII LP (Last) (First) (Middle) C/O CANAAN PARTNERS, 285 RIVERSIDE AVENUE, SUITE 250 (Street) WESTPORT CT 06880 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Durata Therapeutics, Inc. [ DRTX ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 07/24/2012
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

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	07/24/2012		C(1)		1,346,475	A	(1)	1,346,475	D(2)(3)
Common Stock	07/24/2012		P		555,555	A	$9	1,902,030	D(2)(3)

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 Securities Underlying Derivative Security (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: 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 Preferred Stock	(1)	07/24/2012		C(1)			10,771,804	(1)	(1)	Common Stock	1,346,475	(1)	0	D(2)(3)
Stock Option (right to buy)	$2.08	02/28/2012		A(4)		6,250		(4)	02/27/2022	Common Stock	6,250	$0.00	6,250	I	See footnote(5)

1. Name and Address of Reporting Person* Canaan VIII LP (Last) (First) (Middle) C/O CANAAN PARTNERS, 285 RIVERSIDE AVENUE, SUITE 250 (Street) WESTPORT CT 06880 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Canaan Partners VIII LLC (Last) (First) (Middle) C/O CANAAN PARTNERS, 285 RIVERSIDE AVENUE, SUITE 250 (Street) WESTPORT CT 06880 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. The Series A Preferred Stock has no expiration date and each share of Series A Preferred Stock converted automatically into 0.125 shares of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration.

2. Shares held directly by Canaan VIII L.P ("Canaan L.P."). Canaan Partners VIII LLC ("Canaan LLC"), the general partner of Canaan L.P., may be deemed to share voting, investment and dispositive power with respect to shares held by Canaan L.P., but disclaims beneficial ownership of the securities held by Canaan L.P. except to the extent of any pecuniary interest therein.

3. Mr. Brenton K. Ahrens, a member and manager of Canaan LLC and a vice-president of Canaan Management, Inc. ("Canaan Management", and together with Canaan L.P. and Canaan LLC, the "Canaan Entities"), serves as the representative of the Canaan Entities on the Issuer's board of directors.

4. This option was granted on February 28, 2012 to Mr. Ahrens with respect to 6,250 shares of common stock, vesting in 36 substantially equal monthly installments over a three year period, the first installment of which vested on March 28, 2012.

5. Mr. Ahrens, pursuant to an agreement with Canaan Management, is contractually obligated to assign any remuneration received for service as a director to Canaan Management. Each of the Canaan Entities disclaims beneficial ownership in the stock options held by Mr. Ahrens, except to the extent, if any, of its pecuniary interest therein.

Remarks:

	By: /s/ Guy M. Russo, Manager	07/26/2012
	Guy M. Russo, Manager	07/26/2012
	** Signature of Reporting Person	Date
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