FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
Washington, D.C. 20549
OMB Number: 3235-0287
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
1. Name and Address of Reporting Person * Stevenson Wade R. 2. Issuer Name and Ticker or Trading Symbol GenMark Diagnostics, Inc. [ GNMK ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
SVP, North America Sales
(Last)         (First)         (Middle)
3. Date of Earliest Transaction (MM/DD/YYYY)
(City)       (State)       (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)
6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person
___ 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. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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  4/22/2021    U    50000 (1)(2) D $24.05  0  D   

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 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 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

Explanation of Responses:
(1)  Disposed of pursuant to the Agreement and Plan of Merger, dated March 12, 2021, by and among Roche Holdings, Inc., a Delaware corporation ("Parent"), Geronimo Acquisition Corp., a Delaware corporation and wholly owned subsidiary of Parent ("Purchaser"), and GenMark Diagnostics, Inc., a Delaware corporation (the "Company") (the "Merger Agreement" and the transactions contemplated thereby, the "Merger"), whereby Parent caused Purchaser to conduct a tender offer for all of the issued and outstanding shares of common stock, par value $0.0001 per share, of the Company, at a price of $24.05 per share (the "Offer Price"). On April 22, 2021 (the "Merger Effective Time"), the Company irrevocably accepted for payment all shares that were validly tendered and not withdrawn.
(2)  Consists of 50,000 RSUs. The Merger Agreement provides that each RSU awarded pursuant to any Company Plan, whether vested or unvested, that is outstanding immediately prior to the Merger Effective Time, will automatically (i) be fully accelerated and vest in full and the restrictions thereon shall lapse and (ii) be canceled and terminated as of the Merger Effective Time, and, in exchange therefor, each former holder of any such RSU will be entitled to receive an amount in cash (without interest and subject to any deduction for required withholding taxes) equal to the product of the Offer Price multiplied by the number of Shares subject to such RSU.

Reporting Owners
Reporting Owner Name / Address
Director 10% Owner Officer Other
Stevenson Wade R.

SVP, North America Sales

/s/ Eric Stier, Attorney-in-fact 4/22/2021
**Signature of Reporting Person Date
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