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 * MYERS GREG   2. Issuer Name and Ticker or Trading Symbol ALTERA CORP [ALTR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 101 INNOVATION DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 05/06/2010 (Street) SAN JOSE, CA 95134 4. If Amendment, Date Original Filed(Month/Day/Year) 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 Common Stock 05/06/2010   M   1,667 A $ 0 3,334 D   Common Stock 05/06/2010   M   1,667 A $ 0 5,001 D

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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
Restricted Stock Unit (RSU)	(1)	05/06/2010		M			1,667	(2)	(2)	Common Stock	1,667	$ 0	6,666	D
Restricted Stock Unit (RSU)	(1)	05/06/2010		M			1,667	(2)	(2)	Common Stock	1,667	$ 0	4,999	D
Restricted Stock Unit (RSU)	(1)	05/06/2010		D			1,666	(3)	(3)	Common Stock	1,666	$ 0	3,333	D
Restricted Stock Unit (RSU)	(1)	05/06/2010		D			3,333	(3)	(3)	Common Stock	3,333	$ 0	0	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MYERS GREG 101 INNOVATION DRIVE SAN JOSE, CA 95134	X

Signatures

Greg Myers		05/07/2010
**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 represents a contingent right to receive one share of Altera common stock at no cost.
(2)	Mr. Myers ceased to be a director of the Company effective May 6, 2010. The Compensation Committee of the board of director has voted on March 8, 2010 to accelerate the vesting of Mr. Myers - 3,334 shares that would have vested on May 13, 2010, such that 3,334 shares will be fully vested on May 6, 2010.
(3)	The restricted stock units were cancelled upon Mr. Myers' retirement from the Board of Directors on May 6, 2010.

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