Sec Form 4 Filing - Fairchild Nancy @ LUMINEX CORP - 2020-07-15

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 Fairchild Nancy 2. Issuer Name and Ticker or Trading Symbol LUMINEX CORP [ LMNX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) SVP, Human Resources (Last) (First) (Middle) 12212 TECHNOLOGY BLVD 3. Date of Earliest Transaction (MM/DD/YY) 07/15/2020 (Street) AUSTIN, TX78727 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 07/15/2020 M 18,399 A $ 19.13 76,510 D Common Stock 07/15/2020 S 18,399 ( 1 ) D $ 36.0087 58,111 D Common Stock 07/15/2020 M 32,153 A $ 15.93 90,264 D Common Stock 07/15/2020 S 32,153 ( 1 ) D $ 36.0056 58,111 D Common Stock 07/15/2020 M 5,973 A $ 17.24 64,084 D Common Stock 07/15/2020 S 5,973 ( 1 ) D $ 36 58,111 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 Executi on 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) $ 19.13 07/15/2020 M 18,399 03/22/2017 03/22/2023 Common Stock 18,399 $ 19.13 372 D Stock Option (Right To Buy) $ 15.93 07/15/2020 M 32,153 03/11/2017 03/11/2022 Common Stock 32,153 $ 15.93 0 D Stock Option (Right To Buy) $ 17.24 07/15/2020 M 5,973 03/08/2014 03/08/2023 Common Stock 5,973 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Fairchild Nancy 12212 TECHNOLOGY BLVD AUSTIN, TX78727 SVP, Human Resources Signatures /S/ HARRISS T.CURRIE AS ATTORNEY-IN-FACT FOR NANCY FAIRCHILD 07/16/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This sale is being made pursuant to a trading plan intended to comply with Rule 10b5-1 adopted by the seller on May 20, 2020. The representation regarding the seller's knowledge of material adverse non-public information speaks as of the date that the aforementioned trading plan was adopted.

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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