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*
Braslyn Ltd.

(Last) (First) (Middle)
CAY HOUSE, EP TAYLOR DRIVE

(Street)
LYFORD CAY, NEW PROVIDENCE C5 N7776

(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)
03/09/2021
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 03/09/2021 S 1,107 D $195.82(2) 3,134,859 D(1)
Common Stock 03/09/2021 S 4,633 D $197.3(3) 3,130,226 D(1)
Common Stock 03/09/2021 S 3,993 D $197.81(4) 3,126,233 D(1)
Common Stock 03/09/2021 S 2,237 D $199.08(5) 3,123,996 D(1)
Common Stock 03/09/2021 M 11,971 A $0.001 3,135,967 D(1)
Common Stock 03/09/2021 S 1 D $191 3,135,966 D(1)
Common Stock 03/10/2021 S 189 D $195.52(6) 3,135,777 D(1)
Common Stock 03/10/2021 S 20 D $196.12 3,135,757 D(1)
Common Stock 03/10/2021 S 200 D $198 3,135,557 D(1)
Common Stock 03/10/2021 M 410 A $0.001 3,135,967 D(1)
Common Stock 03/10/2021 S 1 D $195.9 3,135,966 D(1)
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 03/09/2020 M 11,971 01/06/2017 (7) Common Stock 11,971 $5.599 3,578,450 D(1)
Warrant (right to purchase) $0.001 03/10/2020 M 410 01/06/2017 (7) Common Stock 410 $5.599 3,578,040 D(1)
1. Name and Address of Reporting Person*
Braslyn Ltd.

(Last) (First) (Middle)
CAY HOUSE, EP TAYLOR DRIVE

(Street)
LYFORD CAY, NEW PROVIDENCE C5 N7776

(City) (State) (Zip)
1. Name and Address of Reporting Person*
LEWIS JOSEPH

(Last) (First) (Middle)
CAY HOUSE, EP TAYLOR DRIVE
LYFORD CAY

(Street)
NEW PROVIDENCE C5 N7776

(City) (State) (Zip)
Explanation of Responses:
1. Tese 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) Braslyn, (ii) Boxer Capital, LLC, (iii) Boxer Asset Management Inc., (iv) MVA Investors, LLC, (v) Lockend Five, LLC, (vi) Joe Lewis, (vii) Ivan M. Lieberburg, (viii) Aaron I. Davis, (ix) Shehan B. Dissanayake, and (x) Christopher Fuglesang (collectively, the "Boxer Group). Each of Messrs. Fuglesang, Lieberburg, Dissanayake and Davis is a member of Boxer Capital. Each member of the Boxer Group other than Braslyn disclaims beneficial ownership of these securities to the extent it or he does not have a pecuniary interest therein.
2. Reflects the weighted average sale price. The reporting person effected multiple same-way open market sale transactions on the same day at different prices through a trade order executed by a broker dealer. The reporting person reported on a single line all such transactions that occurred within a one dollar price range. The reporting person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the issuer, or a shareholder of the issuer, full information regarding the number of shares sold at each separate price. The range of prices for such transaction is $195.24 to $196.20.
3. Reflects the weighted average sale price. The reporting person effected multiple same-way open market sale transactions on the same day at different prices through a trade order executed by a broker dealer. The reporting person reported on a single line all such transactions that occurred within a one dollar price range. The reporting person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the issuer, or a shareholder of the issuer, full information regarding the number of shares sold at each separate price. The range of prices for such transaction is $196.55 to $197.53.
4. Reflects the weighted average sale price. The reporting person effected multiple same-way open market sale transactions on the same day at different prices through a trade order executed by a broker dealer. The reporting person reported on a single line all such transactions that occurred within a one dollar price range. The reporting person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the issuer, or a shareholder of the issuer, full information regarding the number of shares sold at each separate price. The range of prices for such transaction is $197.56 to $198.23.
5. Reflects the weighted average sale price. The reporting person effected multiple same-way open market sale transactions on the same day at different prices through a trade order executed by a broker dealer. The reporting person reported on a single line all such transactions that occurred within a one dollar price range. The reporting person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the issuer, or a shareholder of the issuer, full information regarding the number of shares sold at each separate price. The range of prices for such transaction is $198.62 to $199.46.
6. Reflects the weighted average sale price. The reporting person effected multiple same-way open market sale transactions on the same day at different prices through a trade order executed by a broker dealer. The reporting person reported on a single line all such transactions that occurred within a one dollar price range. The reporting person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the issuer, or a shareholder of the issuer, full information regarding the number of shares sold at each separate price. The range of prices for such transaction is $195.11 to $196.09.
7. 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:
Braslyn Ltd., By: /s/ Jason Callender, **Jason Callender 03/10/2021
/s/ Joseph C. Lewis, ** Joseph C. Lewis 03/10/2021
** 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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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