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
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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*
Boxer Capital, LLC

(Last) (First) (Middle)
12860 EL CAMINO REAL, SUITE 300

(Street)
SAN DIEGO CA 92130

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Mirati Therapeutics, Inc. [ MRTX ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
10/30/2020
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 10/30/2020 S 37,050 D $202 216,288 D(3)
Common Stock 10/30/2020 M 37,051 A $0.001 253,339 D(3)
Common Stock 10/30/2020 F 1 D $219.97 253,338 D(3)
Common Stock 10/30/2020 S 362,950 D $202 1,404,610 D(1)(2)
Common Stock 10/30/2020 M 362,952 A $0.001 1,765,562 D(1)(2)
Common Stock 10/30/2020 F 2 D $219.97 1,765,560 D(1)(2)
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
Warrant (right to purchase) $0.001 10/30/2020 M 362,952 01/06/2017 (4) Common Stock 362,952 $5.599 128,805 D(1)(2)
Warrant (right to purchase) $0.001 10/30/2020 M 37,051 01/06/2017 (4) Common Stock 37,051 $5.599 13,996 D(3)
1. Name and Address of Reporting Person*
Boxer Capital, LLC

(Last) (First) (Middle)
12860 EL CAMINO REAL, SUITE 300

(Street)
SAN DIEGO CA 92130

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Boxer Asset Management Inc.

(Last) (First) (Middle)
C/O CAY HOUSE, EP TAYLOR DRIVE N7776
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, EP TAYLOR DRIVE
LYFORD CAY

(Street)
NEW PROVIDENCE C5 N7776

(City) (State) (Zip)
1. Name and Address of Reporting Person*
MVA Investors, LLC

(Last) (First) (Middle)
11682 EL CAMINO REAL, SUITE 320

(Street)
SAN DIEGO CA 92130

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Davis Aaron I.

(Last) (First) (Middle)
12860 EL CAMINO REAL, SUITE 300

(Street)
SAN DIEGO CA 92130

(City) (State) (Zip)
1. Name and Address of Reporting Person*
LIEBERBURG IVAN M

(Last) (First) (Middle)
12860 EL CAMINO REAL, SUITE 300

(Street)
SAN DIEGO CA 92130

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Dissanayake Shehan Bharatha

(Last) (First) (Middle)
12860 EL CAMINO REAL, SUITE 300

(Street)
SAN DIEGO CA 92130

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Fuglesang Christopher

(Last) (First) (Middle)
12860 EL CAMINO REAL, SUITE 300

(Street)
SAN DIEGO CA 92130

(City) (State) (Zip)
Explanation of Responses:
1. These securities are owned directly by Boxer Capital, LLC ("Boxer Capital"), 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) Braslyn Ltd. ("Braslyn"), (ii) Boxer Capital, LLC ("Boxer Capital") (iii) Boxer Asset Management Inc. ("Boxer Management"), (iv) MVA Investors, LLC ("MVA Investors"), (v) Lockend Five, LLC ("Lockend Five"), (vi) Joe Lewis, (vii) Ivan M. Lieberburg, (viii) Aaron I. Davis, (ix) Shehan B. Dissanayake, and (x) Christopher Fuglesang (collectively, the "Boxer Group), and indirectly by Braslyn, Boxer Management and Messrs. Lewis, Fuglesang, Lieberburg, Dissanayake and Davis, by virtue of their ownership in Boxer Capital.. Each of Messrs. Fuglesang, Lieberburg, Dissanayake and Davis is a member of Boxer Capital.
2. (Continued from Footnote 1) Each of Messrs. Fuglesang, Lieberburg, Dissanayake and Davis is a member of Boxer Capital. Each member of the Boxer Group other than Boxer Capital disclaims beneficial ownership of these securities to the extent it or he does not have a pecuniary interest therein.
3. These securities are owned directly by MVA Investors which may be deemed to be a member of the Boxer Group for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended. Aaron I. Davis is a member of and has voting and dispositive power over securities held by MVA Investors Each member of the Boxer Group other than MVA Investors and Aaron I. Davis disclaims beneficial ownership of these securities to the extent it or he does not have a pecuniary interest therein.
4. The warrants do not have an expiration date and are not exercisable to the extent that, following exercise of such warrants, the warrant holder and its affiliates would beneficially own more than 19.99% of the issuer's common stock.
Remarks:
Boxer Capital, LLC, By: /s/ Aaron I. Davis 10/30/2020
MVA Investors, LLC, By: /s/ Aaron I. Davis 10/30/2020
Boxer Asset Management, Inc., By: /s/ Jason Callender 10/30/2020
/s/ Joseph C. Lewis 10/30/2020
Ivan M. Lieberburg /s/ Christopher Fuglesang 10/30/2020
/s/ Aaron I. Davis 10/30/2020
/s/ Shehan B. Dissanayake 10/30/2020
/s/ Christopher Fuglesang 10/30/2020
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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