Sec Form 3 Filing - Kober John @ MACOM Technology Solutions Holdings, Inc. - 2019-05-30

FORM 3 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 Kober John 2. Issuer Name and Ticker or Trading Symbol MACOM Technology Solutions Holdings, Inc. [ MTSI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Senior VP and CFO (Last) (First) (Middle) C/O MACOM TECHNOLOGY SOLUTIONS HOLDINGS, 100 CHELMSFORD STREET 3. Date of Earliest Transaction (MM/DD/YY) 05/30/2019 (Street) LOWELL, MA01851 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 37,352 ( 1 ) ( 2 ) 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 Kober JohnC/O MACOM TECHNOLOGY SOLUTIONS HOLDINGS 100 CHELMSFORD STREET LOWELL, MA01851 Senior VP and CFO Signatures /s/ Ambra R. Roth, Attorney-in-Fact 06/03/2019 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Includes (i) 16,788 restricted stock units ("RSUs") granted on March 15, 2019, which vest as follows: 4,197 RSUs vest on February 15, 2020, 4,197 RSUs vest on February 15, 2021, 4,197 RSUs vest on February 15, 2022 and 4,197 RSUs vest on February 15, 2023; (ii) 3,750 RSUs granted on May 31, 2018, which vest as follows: 1,250 RSUs vest on February 15, 2020, 1,250 RSUs vest on February 15, 2021 and 1,250 RSUs vest on February 15, 2022; (iii) 4,376 RSUs granted on March 15, 2018, which vest as follows: 1,458 RSUs vest on February 15, 2020, 1,458 RSUs vest on February 15, 2021 and 1,458 RSUs vest on February 15, 2022 (iv) 3,422 RSUs granted on March 14, 2017, which vest as follows: 1,710 RSUs vest on February 15, 2020 and 1,712 RSUs vest on February 15, 2021; and (v) 1,506 RSUs granted on March 17, 2016, which vest on February 15, 2020, [continued in footnote (2)] ( 2 )provided with respect to each vesting event described herein that the Reporting Person remains in continuous service with the Issuer through such vesting date. All RSUs were granted to the Reporting Person under the Issuer's 2012 Omnibus Incentive Plan and each RSU represents the contingent right to receive one share of Common Stock.

Remarks: Exhibit List: Exhibit 24 - Power of Attorney

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

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