Sec Form 4 Filing - Kremling Ernest C. II @ KMG CHEMICALS INC - 2018-11-15

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 Kremling Ernest C. II 2. Issuer Name and Ticker or Trading Symbol KMG CHEMICALS INC [ KMG] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Vice President of Operations (Last) (First) (Middle) 12709 VINO DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 11/15/2018 (Street) FORT WORTH, TX76126 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 11/15/2018 D 59,713 D 0 D Common Stock 11/15/2018 D 10,242 D 0 I by Deferred Compensation Plan

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 Performance Stock Awards $ 0 11/15/2018 D 2 ( 3 ) ( 3 ) Common Stock 28,075 $ 0 0 D Time Stock Award $ 0 11/15/2018 D 1 ( 4 ) ( 4 ) Common Stock 5,221 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Kremling Ernest C. II 12709 VINO DRIVE FORT WORTH, TX76126 Vice President of Operations Signatures Ernest C Kremling II 11/16/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Disposed of pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated as of August 14, 2018, by and among KMG Chemicals, Inc. ("KMG"), Cabot Microelectronics Corporation ("Cabot Microelectronics") and Cobalt Merger Sub Corporation, in exchange for 11,942 shares of Cabot Microelectronics common stock and $3,323,090 in cash consideration at the Effective Time of the merger. ( 2 )Disposed of pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated as of August 14, 2018, by and among KMG Chemicals, Inc. ("KMG"), Cabot Microelectronics Corporation ("Cabot Microelectronics") and Cobalt Merger Sub Corporation, in exchange for 2,048 shares of Cabot Microelectronics common stock and $570,008 in cash consideration at the Effective Time of the merger. ( 3 )Pursuant to the Merger Agreement, the restricted stock unit awards which were granted prior to August 14, 2018 and which expire 7/31/19 and 7/31/20, fully vested and were cancelled and converted in the merger in exchange for 5,615 shares of Cabot Microelectronics common stock and $1,562,374 in cash consideration at the Effective Time of the merger, which is the right to receive the merger consideration in respect of each share of KMG common stock underlying the applicable restricted stock united award. ( 4 )Pursuant to the Merger Agreement, the restricted stock unit award which was granted on or following August 14, 2018, was assumed by Cabot Microelectronics and converted into a restricted stock unit award relating to a number of shares of Cabot Microelectronics common stock (rounded to the nearest whole share) equal to (i) the number of shares of KMG common stock subject to such KMG restricted stock unit award immediately prior to the effective time, multiplied by (ii) the "equity award exchange ratio" (defined below). The assumed restricted stock unit awards will be subject to the same terms and conditions as were applicable to the corresponding KMG equity award immediately prior to the effective time (including vesting terms). The "equity award exchange ratio" means the sum of (a) 0.2000 and (b) the quotient (rounded to four decimal places) obtained by dividing (x) $55.65 by (y) the volume weighted average price per share (calculated to the nearest one-hundredth of one cent) of Cabot

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