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 OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

PETERSON JAMES J 		2. Issuer Name and Ticker or Trading Symbol

MICROSEMI CORP [ MSCC ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Chairman of the Board & CEO
(Last)          (First)          (Middle)

ONE ENTERPRISE 		3. Date of Earliest Transaction (MM/DD/YYYY)

5/29/2018
(Street)

ALISO VIEJO, CA 92656
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ 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. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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
Microsemi Common Stock   5/29/2018     D    473302   D   (1) 0   D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 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 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
Performance Rights     (2) 5/29/2018     D         250000      (2) 7/26/2021   Microsemi Common Stock   250000.0     (2) 0   D    

Explanation of Responses:
(1)  Shares disposed of pursuant to the Agreement and Plan of Merger by and among Microchip Technology Incorporated ("Microchip") , Maple Acquisition Corporation and Microsemi Corporation (the "Merger Agreement" and, the transaction contemplated therein, the "Merger"), whereby each share of Issuer's common stock was automatically cancelled and converted into the right to an amount equal to $68.78 in cash (the "Merger Consideration").
(2)  Each Performance Right represents a contingent right to receive one share of MSCC Common Stock. The 1,000,000 Performance Rights granted were scheduled to vest (a) 25% upon Microsemi's common stock (plus amount of any dividends paid per share) achieving a market price of not less than $50.00 per share for a period of at least twenty consecutive trading days, (b) 50% upon Microsemi's common stock (plus amount of any dividends paid per share) achieving a market price of not less than $60.00 per share for a period of at least twenty consecutive trading days, and (c) 25% upon Microsemi's common stock (plus amount of any dividends paid per share) achieving a market price of not less than $70.00 per share for a period of at least twenty consecutive trading days. The first two tranches of this award vested and this transaction reports the cancellation of the third tranche of these Performance Rights.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
PETERSON JAMES J
ONE ENTERPRISE
ALISO VIEJO, CA 92656 		X
Chairman of the Board & CEO

Signatures
Mark Lin, Attorney-in-Fact for James J. Peterson 5/30/2018
** Signature of Reporting Person Date


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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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