Ownership Submission
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

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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(Print or Type Responses)
1. Name and Address of Reporting Person *
BIBAUD SCOTT A.
   2. Issuer Name and Ticker or Trading Symbol
ALTERA CORP [ALTR] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
SVP Business Unit
(Last)
(First)
(Middle)
101 INNOVATION DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
05/06/2013
(Street)

SAN JOSE, CA 95134		 4. If Amendment, Date Original Filed(Month/Day/Year)
05/08/2013		 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 (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

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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 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
Performance Restricted Stock Unit (1) 05/06/2013   A   37,680     (2)   (2) Common Stock 37,680 (2) $ 0 37,680 D  
Restricted Stock Unit (1) 05/06/2013   A   28,260     (3)   (3) Common Stock 28,260 $ 0 69,631 (4) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
BIBAUD SCOTT A.
101 INNOVATION DRIVE
SAN JOSE, CA 95134		       SVP Business Unit  

Signatures

 /s/ L. Rosenduft   05/16/2013
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Each Restricted Stock Unit ("RSU") represents a contingent right to receive at settlement one share of Altera common stock
(2) The performance restricted stock units ("PRSUs") were granted under Altera's 2005 Equity Incentive Plan. The actual number of PRSUs that may be earned will be determined by comparing Altera's total shareholder return ("TSR") to the TSR of the Philadelphia Semiconductor Total Return Index (the "Index") immediately preceding and at end of the three-year period commencing May 6, 2013 and ending May 6, 2016 (the "Performance Period'). Each 1% difference between Altera's TSR and the Index TSR at the end of the Performance Period will result in a 2% upwards or downwards adjustment to Mr. Bibaud's payout percentage. The number of performance stock units shown in column 5 and 7 is equal to the maximum number of PRSUs that may be earned. The target number of PRSUs that may be earned is 18,840. The minimum number of PRSUs that may be earned is zero.
(3) Subject to the Reporting Person's continuing employment and the provisions in the Altera's standard form of RSU award agreement, the shares will commence vesting as of the Grant Date and vest at a rate of 25% annually. Shares will be delivered to the reporting person on each vest date
(4) This Amendment is being filed to correct the number of Restricted Stock Units beneficially owned by the reporting person as reported on the Form 4 filed on May 8, 2013

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