Ownership Submission
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 OF SECURITIES

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
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
MASSARANY HANY
  2. Issuer Name and Ticker or Trading Symbol
GenMark Diagnostics, Inc. [GNMK]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
President and CEO
(Last)
(First)
(Middle)
5964 LA PLACE COURT
3. Date of Earliest Transaction (Month/Day/Year)
02/18/2019
(Street)

CARLSBAD, CA 92008
4. If Amendment, Date Original Filed(Month/Day/Year)
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 (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 02/18/2019   A(1)   217,500 A $ 0 909,562 D  
Common Stock 02/20/2019   S(2)   5,562 D $ 6.16 904,000 D  
Common Stock               524,568 I Massarany Family Trust dated November 15, 2012 (3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 1474 (9-02)

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 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
Market Stock Units $ 0 02/18/2019   A   217,500 (4)     (5)   (5) Common Stock 217,500 (4) $ 0 217,500 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
MASSARANY HANY
5964 LA PLACE COURT
CARLSBAD, CA 92008
  X     President and CEO  

Signatures

 /s/ Eric Stier, Attorney-in-fact   02/21/2019
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) The amount reported reflects restricted stock units granted to the Reporting Person pursuant to the Issuer's 2010 Equity Incentive Plan. The restricted stock units vest 25% on February 18, 2020 and the remaining shares subject to such award vest in 12 equal quarterly installments thereafter.
(2) The shares were sold pursuant to pre-established trading instructions solely to satisfy tax withholding obligations in connection with the partial vesting of previously granted restricted stock units.
(3) Mr. Massarany is the trustee of the Massarany Family Trust and may be deemed to have beneficial ownership of these securities, to the extent of any indirect pecuniary interest in his distributive shares therein.
(4) Each market stock unit ("MSU") represents the contingent right to receive, following vesting, between 0% and 200% of one share of the Issuer's common stock, subject to the level of achievement of applicable performance conditions. The resulting number of shares acquired upon vesting of the MSUs, if any, is based on the Issuer's total shareholder return for each performance period as compared to the Nasdaq Composite Index.
(5) The MSUs vest in three equal installments, on each of December 31, 2019, December 31, 2020, and December 31, 2021; provided that, at the end of the second and third performance periods, the Reporting Person is eligible to receive any shares that were not earned in the first and second performance periods to the extent that the Issuer's two-year or three-year total shareholder return, as applicable, exceeds the prior performance results as compared to the Nasdaq Composite Index.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.