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, Section 17(a) of the Public
Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

MORGENTHALER PARTNERS VI 		2. Issuer Name and Ticker or Trading Symbol

PEREGRINE SEMICONDUCTOR CORP [ PSMI ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      __ X __ 10% Owner
_____ Officer (give title below)      _____ Other (specify below)
(Last)          (First)          (Middle)

2710 SAND HILL ROAD, SUITE 100 		3. Date of Earliest Transaction (MM/DD/YYYY)

8/13/2012
(Street)

MENLO PARK, CA 94025
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
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. 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
Common Stock   8/13/2012     C    1512031   A   (1) 1690380   D   (2)
 
Common Stock   8/13/2012     C    413529   A   (1) 2103909   D   (2)
 
Common Stock   8/13/2012     C    1263802   A   (1) 3367711   D   (2)
 
Common Stock   8/13/2012     C    183302   A   (1) 3551013   D   (2)
 
Common Stock   8/13/2012     P    200000   A $14.00   3751013   D   (2)
 

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
Series A1 Preferred Stock     (1) 8/13/2012     C         1512031      (1)   (1) Common Stock   1512031   $0   0   D   (2)
 
Series B1 Preferred Stock     (1) 8/13/2012     C         413529      (1)   (1) Common Stock   413529   $0   0   D   (2)
 
Series C1 Preferred Stock     (1) 8/13/2012     C         1263802      (1)   (1) Common Stock   1263802   $0   0   D   (2)
 
Series D1 Preferred Stock     (1) 8/13/2012     C         183302      (1)   (1) Common Stock   183302   $0   0   D   (2)
 

Explanation of Responses:
( 1)  Each share of the issuer's Series A1 Preferred Stock, Series B1 Preferred Stock, Series C1 Preferred Stock, and Series D1 Preferred Stock converted into 1 share of the issuer's Common Stock and had no expiration date.
( 2)  Morgenthaler Management Partners VI, L.L.C., as the general partner of Morgenthaler Partners VI, L.P., beneficially owns the reported securities indirectly, but disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
MORGENTHALER PARTNERS VI
2710 SAND HILL ROAD
SUITE 100
MENLO PARK, CA 94025
X

Morgenthaler Management Partners VI LLC
50 PUBLIC SQUARE
SUITE 2700
CLEVELAND, OH 44113
X


Signatures
/s/ Jay Biskupski as Attorney-in-fact for Morgenthaler Management Partners VI, L.L.C. 8/13/2012
** 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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