Sec Form 4 Filing - Amster John A @ RPX Corp - 2016-05-12

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 Amster John A 2. Issuer Name and Ticker or Trading Symbol RPX Corp [ RPXC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Executive Officer (Last) (First) (Middle) C/O RPX CORPORATION, ONE MARKET PLAZA, SUITE 800 3. Date of Earliest Transaction (MM/DD/YY) 05/12/2016 (Street) SAN FRANCISCO, CA94105 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

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 Restricted Stock Units $ 0 ( 1 ) 05/12/2016 A 88,782 ( 2 ) ( 2 ) Common Stock 88,782 $ 0 88,782 D Performance Units $ 0 ( 1 ) 05/12/2016 A 88,782 ( 3 ) ( 3 ) Common Stock 88,782 $ 0 88,782 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Amster John A C/O RPX CORPORATION ONE MARKET PLAZA, SUITE 800 SAN FRANCISCO, CA94105 X Chief Executive Officer Signatures Martin Roberts, Attorney-in-Fact for John A. Amster 05/16/2016 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Each restricted stock or performance unit represents a contingent right to receive one share of Issuer's common stock. The units were awarded at no cost to Reporting Person. ( 2 )6.25% of the stock units subject to the award will vest on May 20, 2016 and 6.25% of the shares subject to the award will vest in equal quarterly installments thereafter, provided that Reporting Person remains in continuous service through each vest date. The quarterly vest dates are February 20, May 20, August 20 and November 20. ( 3 )1/3 of the units will vest quarterly over approximately 4 years from the date on which the average closing price per share of the Company's common stock ("ACP") has been at or above $11.91 for any period of 90 consecutive calendar days ("90-day Period"); 1/3 of the units will vest quarterly over approximately 4 years from the date on which the ACP has been at or above $12.82 for any 90-day Period; 1/3 of the units will vest quarterly over approximately 4 years from the date on which the ACP has been at or above $13.74 for any 90-day Period. The vesting conditions will not be deemed to be satisfied until and unless the Company's Compensation Committee certifies they are satisfied, at which time the units will vest on the next established quarterly vest date following such certification. Reporting Person must remain in continuous service through each vest 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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