FORM 4		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 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Summit Partners Private Equity Fund VII-A, L.P. (Last) (First) (Middle) 222 BERKELEY STREET 18TH FLOOR (Street) BOSTON MA 02116 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol M/A-COM Technology Solutions Holdings, Inc. [ MTSI ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 03/20/2012
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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	03/20/2012		C		8,471,200(1)	A	(2)	8,471,200(1)	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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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
Class B Convertible Preferred Shares	(2)	03/20/2012		C			33,884,814(3)	(2)	(2)	Common Stock	8,471,200(1)	$0	0	D

1. Name and Address of Reporting Person* Summit Partners Private Equity Fund VII-A, L.P. (Last) (First) (Middle) 222 BERKELEY STREET 18TH FLOOR (Street) BOSTON MA 02116 (City) (State) (Zip)

1. Name and Address of Reporting Person* Summit Partners Private Equity Fund VII B L P (Last) (First) (Middle) 222 BERKELEY STREET 18TH FLOOR (Street) BOSTON MA 02116 (City) (State) (Zip)

1. Name and Address of Reporting Person* Summit Investors I, LLC (Last) (First) (Middle) 222 BERKELEY STREET, 18TH FLOOR (Street) BOSTON MA 02116 (City) (State) (Zip)

1. Name and Address of Reporting Person* Summit Investors I (UK), L.P. (Last) (First) (Middle) 222 BERKELEY STREET, 18TH FLOOR (Street) BOSTON MA 02116 (City) (State) (Zip)

Explanation of Responses:

1. The Common Stock is held as follows: 5,283,026 shares in the name of Summit Partners Private Equity Fund VII-A, L.P.; 3,173,070 shares in the name of Summit Partners Private Equity Fund VII-B, L.P.; 14,108 shares in the name of Summit Investors I, LLC; 996 shares in the name of Summit Investors I (UK), L.P.

2. The Class B Convertible Preferred Stock is convertible into M/A-COM Technology Solutions Holdings, Inc. common stock on the basis of one share of Common Stock for every four shares of Class B Convertible Preferred Stock and has no expiration date.

3. The Convertible Class B Preferred Stock was held as follows: 21,132,108 shares in the name of Summit Partners Private Equity Fund VII-A, L.P.; 12,692,284 shares in the name of Summit Partners Private Equity Fund VII-B, L.P.; 56,436 shares in the name of Summit Investors I, LLC; 3,986 shares in the name of Summit Investors I (UK), L.P.

Remarks:

The entities mentioned in Footnote 1 and 3 are collectively referred to as the "Summit Entities." Each of the Summit Entities disclaims beneficial ownership of the shares except for those listed in the Footnoes as held by such entity, except to the extent of each such entity's pecuniary interest therein.

	Summit Partners Private Equity Fund VII-A, L.P., by Summit Partners PE VII, L.P., its GP, by Summit Partners PE VII, LLC, its GP, by Summit Partners, L.P., its GP, by Summit Master Company, LLC, its GP, by Robin W. Devereux, POA for Joseph Trustey, Member	03/21/2012
	Summit Partners Private Equity Fund VII-B, L.P., by Summit Partners PE VII, L.P., its GP, by Summit Partners PE VII, LLC, its GP, by Summit Partners, L.P., its GP, by Summit Master Company, LLC, its GP, by Robin W. Devereux, POA for Joseph Trustey, Member	03/21/2012
	Summit Investors I, LLC, by Summit Investors Management, LLC, its manager, by Summit Partners, L.P., its managing member, by Summit Master Company, LLC, its general partner, by Robin W. Devereux, POA for Joseph F. Trustey, Member	03/21/2012
	Summit Investors I (UK), L.P., by Summit Investors Management, LLC, its manager, by Summit Partners, L.P., its managing member, by Summit Master Company, its general Partner, Robin W. Devereux, POA for Joseph F. Trustey, Member	03/21/2012
	** Signature of Reporting Person	Date
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