Sec Form 4 Filing - Grenfell-Gardner Jason @ Pfenex Inc. - 2020-10-01

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Grenfell-Gardner Jason 2. Issuer Name and Ticker or Trading Symbol Pfenex Inc. [ PFNX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O PFENEX INC., 10790 ROSELLE STREET 3. Date of Earliest Transaction (MM/DD/YY) 10/01/2020 (Street) SAN DIEGO, CA92121 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 10/01/2020 U 10,000 D 0 D

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 of Derivative Security: 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 Stock Option (right to buy) $ 4.92 10/01/2020 U 25,000 05/09/2018 05/05/2027 Common Stock 25,000 ( 3 ) 0 D Stock Option (right to buy) $ 6.33 10/01/2020 U 18,000 05/09/2019 05/09/2028 Common Stock 18,000 ( 3 ) 0 D Stock Option (right to buy) $ 5.78 10/01/2020 U 18,000 05/08/2020 05/09/2029 Common Stock 18,000 ( 3 ) 0 D Stock Option (right to buy) $ 6.43 10/01/2020 U 18,000 ( 4 ) 05/08/2030 Common Stock 18,000 ( 3 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Grenfell-Gardner Jason C/O PFENEX INC., 10790 ROSELLE STREET SAN DIEGO, CA92121 X Signatures /s/ Marilyn Bock as Attorney-in-Fact 10/05/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Upon the terms and subject to the conditions set forth in the Agreement and Plan of Merger, dated August 10, 2020 (the "Merger Agreement"), by and among Ligand Pharmaceutical Incorporated, a Delaware corporation, Pelican Acquisition Sub, Inc., a Delaware corporation and wholly owned subsidiary of Parent, and the Issuer, each issued and outstanding share of Issuer common stock (other than (A) Cancelled Shares, (B) Accepted Company Shares, and (C) Dissenting Company Shares (each as defined in the Merger Agreement)) was automatically converted into the right to receive (i) $12.00 per share, net to the holder thereof, subject to reduction for any applicable withholding Taxes (as defined in the Merger Agreement) payable in respect thereof, in cash (the "Cash Portion"), and (ii) a non-transferrable contractual contingent value right per share (a "CVR"), pursuant to the Contingent Value Rights Agreement, dated as of September 30, 2020 (as it may be amended from time to time, ( 2 )(Continued from Footnote 1) the "CVR Agreement"), to receive a contingent payment of $2.00 in cash upon the achievement of a specified milestone as set forth in the CVR Agreement (the "CVR Portion"), effective immediately prior to the Effective Time (as defined in the Merger Agreement). ( 3 )Upon the terms and subject to the conditions set forth in the Merger Agreement, each option with an exercise price equal to or less than the Cash Portion that remains outstanding as of immediately prior to the Effective Time, whether vested or unvested, will be cancelled and converted into a right to receive, with respect to each share of Issuer Common stock subject to such option, an amount in cash, without interest, equal to the excess, if any, of (i) the Cash Portion over the per share exercise price of such option, plus (ii) the CVR Portion (the "Option Consideration"). All Option Consideration will be paid without interest and less any applicable tax withholdings. ( 4 )One hundred percent (100%) of the shares subject to the option shall vest and become exercisable on the date of the next annual meeting of the Issuer's stockholders (the "Annual Meeting") held after May 8, 2020, subject to the reporting person's continuing service through the date of the Annual Meeting. Notwithstanding the foregoing, one hundred percent (100%) of the shares subject to the option shall vest and become exercisable as of immediately prior to a Change in Control (as such term is defined in the Issuer's 2014 Equity Incentive Plan).

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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