Sec Form 4 Filing - MOLNAR LOUIS @ ROFIN SINAR TECHNOLOGIES INC - 2016-11-07

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 MOLNAR LOUIS 2. Issuer Name and Ticker or Trading Symbol ROFIN SINAR TECHNOLOGIES INC [ RSTI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) COO North America (Last) (First) (Middle) 3. Date of Earliest Transaction (MM/DD/YY) 11/07/2016 (Street) 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

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 Employee Stock Option Right to Buy $ 28.5 11/07/2016 J( 1 ) 50,000 ( 1 ) 03/15/2017 RSTI Common Stock 50,000 ( 1 ) 0 D Employee Stock Option Right to Buy $ 40.2 11/07/2016 J( 2 ) 25,000 ( 2 ) 03/19/2018 RSTI Common Stock 25,000 ( 2 ) 0 D Employee Stock Option Right to Buy $ 22.83 11/07/2016 J( 1 ) 25,000 ( 1 ) 03/17/2020 RSTI Common Stock 25,000 ( 1 ) 0 D Employee Stock Option Right to Buy $ 35.19 11/07/2016 J( 2 ) 25,000 ( 2 ) 03/16/2021 RSTI Common Stock 25,000 ( 2 ) 0 D Employee Stock Option Right to Buy $ 25.95 11/07/2016 J( 1 ) 25,000 ( 1 ) 03/15/2022 RSTI Common Stock 25,000 ( 1 ) 0 D Employee Stock Option Right to Buy $ 27.59 11/07/2016 J( 1 ) 25,000 ( 1 ) 03/14/2023 RSTI Common Stock 25,000 ( 1 ) 0 D Employee Stock Option Right to Buy $ 25.19 11/07/2016 J( 1 ) 25,000 ( 1 ) 11/06/2023 RSTI Common Stock 25,000 ( 1 ) 0 D Employee Stock Option Right to Buy $ 22.75 11/07/2016 J( 1 ) 20,000 ( 1 ) 11/11/2024 RSTI Common Stock 20,000 ( 1 ) 0 D Employee Stock Option Right to Buy $ 29.68 11/07/2016 J( 1 ) 25,000 ( 1 ) 11/10/2025 RSTI Common Stock 25,000 ( 1 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other MOLNAR LOUIS COO North America Signatures Cindy Denis, Attorney in Fact 11/07/2016 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Reflects disposition on November 7, 2016 pursuant to a merger agreement by and among Coherent, Inc., Rembrandt Merger Sub Corp., a wholly owned subsidiary of Coherent Inc., and Rofin-Sinar Technologies Inc. dated as of March 16, 2016 (the "Merger Agreement"). In accordance with the terms of the Merger Agreement, each option to acquire shares of Rofin common stock was cancelled and converted into an amount in cash equal to the excess of $32.50 over the exercise price of such option. ( 2 )Reflects disposition on November 7, 2016 pursuant to a merger agreement by and among Coherent, Inc., Rembrandt Merger Sub Corp., a wholly owned subsidiary of Coherent Inc., and Rofin-Sinar Technologies Inc. dated as of March 16, 2016 (the "Merger Agreement"). In accordance with the terms of the Merger Agreement, each option with an exercise price of such option in excess of $32.50 was cancelled for no consideration

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