Boxer Asset Management Form 3 Mirati Therapeutics / JOSEPH LEWIS ownership change

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Braslyn Ltd.

(Last) (First) (Middle)

C/O CAY HOUSE, P.O. BOX N-7776

E.P. TAYLOR DRIVE LYFORD CAY

(Street)

NEW PROVIDENCE C5

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
01/04/2016

3. Issuer Name and Ticker or Trading Symbol
Mirati Therapeutics, Inc. [ MRTX ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

Director	X	10% Owner
Officer (give title below)		Other (specify below)

5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	522,500	D(1)
Common Stock	2,023,232	D(2)
Common Stock	429,340	D(3)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Warrant (right to purchase)	(4)	11/21/2017	Common Stock	189,780	8.7	D(2)
Warrant (right to purchase)	(4)	11/21/2017	Common Stock	78,186	8.7	D(5)

1. Name and Address of Reporting Person^*

Braslyn Ltd.

(Last) (First) (Middle)

C/O CAY HOUSE, P.O. BOX N-7776

E.P. TAYLOR DRIVE LYFORD CAY

(Street)

NEW PROVIDENCE C5

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

Boxer Asset Management Inc.

(Last) (First) (Middle)

C/O CAY HOUSE P.O. BOX N-7776

E.P. TAYLOR DRIVE LYFORD CAY

(Street)

NEW PROVIDENCE C5

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

LEWIS JOSEPH

(Last) (First) (Middle)

C/O CAY HOUSE P.O. BOX N-7776

E.P. TAYLOR DRIVE LYFORD CAY

(Street)

NEW PROVIDENCE C5

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

Boxer Capital, LLC

(Last) (First) (Middle)

440 STEVENS AVE, SUITE 100

(Street)

SOLANA BEACH CA 92075

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

MVA Investors, LLC

(Last) (First) (Middle)

440 STEVENS AVE, SUITE 100

(Street)

SOLANA BEACH CA 92075

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

Berkley Capital Management Ltd.

(Last) (First) (Middle)

440 STEVENS AVE, SUITE 100

(Street)

SOLANA BEACH CA 92075

(City) (State) (Zip)

Explanation of Responses:

1. These securities are owned directly by Braslyn Ltd. ("Braslyn"), which may be deemed to be a member of a "group" for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, consisting of (i) Boxer Capital, LLC ("Boxer Capital"), (ii) Boxer Asset Management Inc. ("Boxer Management"), (iii) MVA Investors, LLC ("MVA Investors"), (iv) Berkley Capital Management Ltd. ("Berkley Capital"), (v) Braslyn and (vi) Joe Lewis (collectively, the "Boxer Group"), and indirectly by Joe Lewis. Joe Lewis is the sole indirect owner of and controls Braslyn. On January 4, 2016, Berkley Capital transferred certain of its assets, including all of its shares of common stock of the issuer, to Braslyn for no consideration as part of an internal reorganization.

2. These securities are owned directly by Boxer Capital, and indirectly by Boxer Management and Joe Lewis, by virtue of their ownership in Boxer Capital.

3. These securities are owned directly and solely by MVA Investors, which has sole voting and dispositive power with respect to these securities. Each member of the Boxer Group other than MVA Investors disclaims beneficial ownership of these securities to the extent it or he does not have a pecuniary interest therein.

4. The warrants are not exercisable to the extent that, following exercise of such warrants, the warrant holder would beneficially own more than 19.99% of the issuer's common stock.

5. These securities are owned directly and solely by MVA Investors. Each member of the Boxer Group other than MVA Investors disclaims beneficial ownership of these securities to the extent it or he does not have a pecuniary interest therein.

Remarks:

	Boxer Capital, LLC, By: /s/ Aaron Davis, **Aaron Davis	01/04/2016
	Boxer Asset Management Inc., By: /s/ Jefferson R. Voss, **Jefferson R. Voss	01/04/2016
	MVA Investors, LLC, By: /s/ Aaron Davis, **Aaron Davis	01/04/2016
	Joseph Lewis, /s/ Joseph Lewis, **Joseph Lewis	01/04/2016
	Berkley Capital Management Ltd., By: /s/ Jefferson R. Voss, **Jefferson R. Voss	01/04/2016
	Braslyn Ltd., By: /s/ Jefferson Voss, **Jefferson Voss	01/04/2016
	** Signature of Reporting Person	Date
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