13G Filing: VenBio Select Advisor and Mirati Therapeutics Inc. (MRTX)

Mirati Therapeutics Inc. (NASDAQ:MRTX): Behzad Aghazadeh’s VenBio Select Advisor filed an amended 13D.

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You can access the original SEC filing by clicking here.

Ownership Summary Table

Name Sole Voting Power Shared Voting Power Sole Dispositive Power Shared Dispositive Power Aggregate Amount Owned Power Percent of Class
venBio Select Advisor 3,748,101 0 3,748,101 0 3,748,101 14.99%
Behzad Aghazadeh 3,748,101 0 3,748,101 0 3,748,101 14.99%

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Page 1 of 7 – SEC Filing

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G/A
Under the Securities Exchange Act of 1934
(Amendment No. 2)*

Mirati Therapeutics,
Inc.

(Name of Issuer)

Common Stock,
$0.001 par value

(Title of Class of Securities)

60468T105

(CUSIP Number)

September
30, 2017

(Date of Event Which Requires Filing of This Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
þ Rule 13d-1(b)
¨ Rule 13d-1(c)
¨ Rule 13d-1(d)
(Page
1 of 7 Pages)

______________________________

*The remainder of this cover page shall
be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any
subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder
of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of
1934 (“Act“) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other
provisions of the Act (however, see the Notes).

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Page 2 of 7 – SEC Filing

1

NAME OF REPORTING PERSON

venBio Select Advisor LLC

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a) ¨

(b) þ

3 SEC USE ONLY
4

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON WITH:
5

SOLE VOTING POWER

3,748,101 (including 37,500 shares of Common Stock
issuable upon exercise of Warrants)

6

SHARED VOTING POWER

0

7

SOLE DISPOSITIVE POWER

3,748,101 (including 37,500 shares of Common Stock
issuable upon exercise of Warrants)

8

SHARED DISPOSITIVE POWER

0

9

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

3,748,101 (including 37,500 shares of Common Stock
issuable upon exercise of Warrants)

10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ¨
11

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

14.99%

12

TYPE OF REPORTING PERSON

OO, IA

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Page 3 of 7 – SEC Filing

1

NAME OF REPORTING PERSON

Behzad Aghazadeh

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a) ¨

(b) þ

3 SEC USE ONLY
4

CITIZENSHIP OR PLACE OF ORGANIZATION

United States

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON WITH:
5

SOLE VOTING POWER

3,748,101 (including 37,500 shares of Common Stock
issuable upon exercise of Warrants)

6

SHARED VOTING POWER

0

7

SOLE DISPOSITIVE POWER

3,748,101 (including 37,500 shares of Common Stock
issuable upon exercise of Warrants)

8

SHARED DISPOSITIVE POWER

0

9

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

3,748,101 (including 37,500 shares of Common Stock
issuable upon exercise of Warrants)

10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ¨
11

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

14.99%

12

TYPE OF REPORTING PERSON

IN

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Page 4 of 7 – SEC Filing

Item 1(a). NAME OF ISSUER
Mirati Therapeutics, Inc. (the “Issuer”)
Item 1(b). ADDRESS OF ISSUER’S PRINCIPAL EXECUTIVE OFFICES
9393 Towne Centre Drive, Suite 200, San Diego, California 92121
Item 2(a). NAME OF PERSON FILING
This statement is filed by: (i) venBio Select Advisor LLC, a Delaware limited liability company (“venBio”), which provides investment advisory and management services and has acquired the securities of the Issuer solely for investment purposes on behalf of venBio Select Fund LLC, a Delaware limited liability company, and certain managed accounts and (ii) Behzad Aghazadeh (“Dr. Aghazadeh,” and together with venBio, the “Reporting Persons”), who serves as the portfolio manager and controlling person of venBio.
The filing of this statement should not be construed as an admission that any Reporting Person is, for purposes of Section 13 of the Act, the beneficial owner of the securities reported herein.
Item 2(b). ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE
The address of the business office of each of the Reporting Persons is 120 West 45th Street, Suite 2802, New York, NY 10036.
Item 2(c). CITIZENSHIP
venBio is a Delaware limited liability company.  Dr. Aghazadeh is a United States citizen.
Item 2(d). TITLE OF CLASS OF SECURITIES
Common Stock, $0.001 par value (the “Common Stock“)
Item 2(e). CUSIP NUMBER
60468T105

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Page 5 of 7 – SEC Filing

Item 3. IF THIS STATEMENT IS FILED PURSUANT TO Rules 13d-1(b), OR 13d-2(b) OR (c), CHECK WHETHER THE PERSON FILING IS A:
(a) ¨ Broker or dealer registered under Section 15 of the Act;
(b) ¨ Bank as defined in Section 3(a)(6) of the Act;
(c) ¨ Insurance company as defined in Section 3(a)(19) of the Act;
(d) ¨ Investment company registered under Section 8 of the Investment Company Act of 1940;
(e) þ An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);
(f) ¨ An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F);
(g) þ A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G);
(h) ¨ A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act;
(i) ¨ A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act;
(j) ¨ A non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J);
(k) ¨ Group, in accordance with Rule 13d-1(b)(1)(ii)(K).

If filing as a non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J),
please

specify the type of institution: _________________________________________

Item 4. OWNERSHIP
The information required by Items 4(a) – (c) is set forth in Rows 5 – 11 of the cover page and is incorporated herein by reference.
The percentage set forth in Row 11 of this Schedule 13G/A is calculated based upon 24,969,783 shares of Common Stock outstanding as of July 31, 2017, as reported in the Issuer’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2017 filed with the Securities and Exchange Commission on August 3, 2017, and assumes the exercise of the reported Warrants.

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Page 6 of 7 – SEC Filing

Item 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS
Not applicable.
Item 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON
See Item 2.  venBio Select Fund LLC has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, more than 5% of the Common Stock.
Item 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR CONTROL PERSON
Not applicable.
Item 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP
Not applicable.
Item 9. NOTICE OF DISSOLUTION OF GROUP
Not applicable.
Item 10. CERTIFICATION
Each Reporting Person hereby makes the following certification:
By signing below the Reporting Person certifies that, to the best of his or its knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

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Page 7 of 7 – SEC Filing

SIGNATURES

After reasonable
inquiry and to the best of his or its knowledge and belief, each of the undersigned certifies that the information set forth in
this statement is true, complete and correct.

DATE: October 3, 2017

venBio Select Advisor LLC
/s/ Scott Epstein
Name: Scott Epstein
Title: Chief Financial Officer & Chief
Compliance Officer

/s/ Behzad Aghazadeh

BEHZAD AGHAZADEH

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