Sec Form 4 Filing - Harris Steven L @ ELECTRO SCIENTIFIC INDUSTRIES INC - 2019-02-01

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 Harris Steven L 2. Issuer Name and Ticker or Trading Symbol ELECTRO SCIENTIFIC INDUSTRIES INC [ ESIO] 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 ENGINEERING (Last) (First) (Middle) C/O ELECTRO SCIENTIFIC INDUSTRIES, INC., 13900 NW SCIENCE PARK DR. 3. Date of Earliest Transaction (MM/DD/YY) 02/01/2019 (Street) PORTLAND, OR97229 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 02/01/2019 D 38,647 D $ 30 ( 1 ) 25,900 D Common Stock 02/01/2019 D 25,900 D 0 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 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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Harris Steven L C/O ELECTRO SCIENTIFIC INDUSTRIES, INC. 13900 NW SCIENCE PARK DR. PORTLAND, OR97229 VICE PRESIDENT OF ENGINEERING Signatures By: /s/ Aric McKinnis, Attorney-in-FactFor: Steven L. Harris 02/01/2019 Signature of Reporting Person Date

Explanation of Responses:

( 1 )38,647 shares of Issuer common stock were cancelled and disposed of at the effective time of the merger of EAS Equipment, Inc. ("Merger Sub"), a wholly owned subsidiary of MKS Instruments, Inc. ("MKS"), with and into the Issuer (the "Merger"), pursuant to that certain Agreement and Plan of Merger dated October 29, 2018, among the Issuer, MKS and Merger Sub (the "Merger Agreement") as a result of which Issuer became a wholly owned subsidiary of MKS, in exchange for a cash payment of $30.00 per share. ( 2 )Restricted stock units representing the right to receive a total of 25,900 shares of Issuer's common stock were assumed by MKS at the effective time of the Merger and converted into restricted stock units representing the right to receive 9,844 shares of MKS's common stock, in accordance with the terms of the Merger Agreement.

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).

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