MACOM Technology Solutions (MTSI) DEFA14A Additional proxy soliciting materials

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934 (Amendment No.     )

Filed by the Registrant  ☒                            Filed by a Party other than the Registrant  ☐

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☐ Preliminary Proxy Statement

☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material Pursuant to §240.14a-12

MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC.

(Name of Registrant as Specified in its Charter)

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

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*** Exercise YourRight to Vote ***
Important Notice Regarding the Availability of Proxy Materials for the
Shareholder Meeting to Be Held on March 1, 2018.
	MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC.	Meeting Information
		Meeting Type:        Annual Meeting
		For Holders as of:    January 8, 2018
		Date:    March 1, 2018        Time:    3:00 P.M. Eastern Time
		Location:	Radisson Hotel
			10 Independence Drive
			Chelmsford, MA 01824
		You are receiving this communication because you hold shares in the company named above.
		This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online atwww.proxyvote.comor easily request a paper copy (see reverse side).
		We encourage you to access and review all of the important information contained in the proxy materials before voting.
		See the reverse side of this notice to obtain proxy materials and voting instructions.

— Before You Vote —
How to Access the Proxy Materials
		Proxy Materials Available to VIEW or RECEIVE:
		2018 NOTICE AND PROXY STATEMENT    2017 ANNUAL REPORT
		How to View Online:
		Have the information that is printed in the box marked by the arrow (located on the following page) and visit:www.proxyvote.com.
		How to Request and Receive a PAPER or E-MAIL Copy:
		If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:
			1) BY INTERNET:	www.proxyvote.com
			2) BY TELEPHONE:	1-800-579-1639
			3) BY E-MAIL*:	sendmaterial@proxyvote.com
		*   If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow(located on the following page) in the subject line.
		Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before February 15, 2018 to facilitate timely delivery.
	— How To Vote —
	Please Choose One of the Following Voting Methods
		Vote In Person:If you choose to vote these shares in person at the meeting, you must request a “legal proxy.” To do so, please follow the instructions atwww.proxyvote.comor request a paper copy of the materials, which will contain the appropriate instructions. Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance.
		Vote By Internet:To vote now by Internet, go towww.proxyvote.com.Have the information that is printed in the box marked by the arrow (located on the following page) available and follow the instructions.
		Vote By Mail:You can vote by mail by requesting a paper copy of the materials, which will include a voting instruction form.

        Voting Items        

The Board of Directors recommends you vote

FOR the following:

1.	The election of the two Class III directors nominated by the Company’s board of directors and named in the accompanying proxy materials to serve until the 2021 Annual Meeting of Stockholders.
	Nominees:
	01)	John Ocampo
	02)	John Croteau
The Board of Directors recommends you vote FOR the following proposal:
2.	Ratification of the appointment of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for the fiscal year ending September 28, 2018.
NOTE: The proxies, in their discretion, are authorized to vote on such other business as may properly come before the Annual Meeting and any adjournment or postponement thereof.

        Voting Instructions