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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1. Name and Address of Reporting Person * TAN LIP BU   2. Issuer Name and Ticker or Trading Symbol CADENCE DESIGN SYSTEMS INC [CDNS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) President and CEO (Last) (First) (Middle) 2655 SEELY AVENUE, BLDG 5 3. Date of Earliest Transaction (Month/Day/Year) 08/19/2013 (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               31,400 I Held By IRA (1) Common Stock               25,000 I Held by Child 2 (2) Common Stock               25,000 I Held by Child 1 Common Stock               15,000 I By Trust 1 (3) Common Stock               7,000 I By Trust 3 (4) Common Stock 08/19/2013 08/19/2013 Z V 29,091 A $ 0 668,907 I By Trust 2 (5) Common Stock 08/19/2013 08/19/2013 Z(6) V 29,091 D $ 0 190,831 D   Common Stock 10/28/2013 10/28/2013 P V 10,000 A $ 12.84 678,907 I By Trust 2 (5) Common Stock 10/29/2013 10/29/2013 P V 10,000 A $ 12.81 688,907 I By Trust 2 (5)

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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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
TAN LIP BU 2655 SEELY AVENUE, BLDG 5 SAN JOSE, CA 95134			President and CEO

Signatures

James J. Cowie, Attorney-in-Fact for Lip-Bu Tan		10/30/2013
**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)	Shares held by IRA FBO Lip-Bu Tan DB Securities Inc. Custodian Rollover Account DTD 5/19/97.
(2)	Reporting Person no longer has a pecuniary interest in the 25,000 shares held by Child 2, and therefore, no longer has a reportable indirect beneficial interest in such shares.
(3)	Shares held by A&E Investment LLC, the sole member of which is the Lip-Bu Tan and Ysa Loo Trust dated 2/3/1992.
(4)	Shares held by L Tan & N Lee & W Lee Trustees, Pacvan Walden Inc.
(5)	Shares held by Lip-Bu Tan and Ysa Loo Trust dated 2/3/1992.
(6)	Shares transferred to the Lip-Bu Tan and Ysa Loo Trust dated 2/3/1992.

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