CADENCE DESIGN SYSTEMS INC — Director's Dealing 2011

Aug 4, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CADENCE DESIGN SYSTEMS INC (CDNS)
CIK: 0000813672
Period of Report: 2010-08-17

Reporting Person: TAN LIP BU (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-08-17	Common Stock	Z	50001	—	Acquired	238387	Indirect
2010-08-17	Common Stock	Z	50001	—	Disposed	508331	Direct
2011-01-20	Common Stock	Z	75000	—	Acquired	313387	Indirect
2011-01-20	Common Stock	Z	75000	—	Disposed	433331	Direct
2011-02-10	Common Stock	Z	33333	—	Acquired	346720	Indirect
2011-02-10	Common Stock	Z	33333	—	Disposed	399998	Direct
2011-02-15	Common Stock	Z	16668	—	Acquired	363388	Indirect
2011-02-15	Common Stock	Z	16668	—	Disposed	383330	Direct
2011-08-02	Common Stock	P	20000	$9.975	Acquired	383388	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	31400	Indirect

Footnotes

F1: Shares held by IRA FBO Lip-Bu Tan DB Securities Inc. Custodian Rollover Account DTD 5/19/97.

F2: Shares transferred to the Lip-Bu Tan and Ysa Loo Trust dated 2/3/1992.

F3: Shares transferred to the Lip-Bu Tan and Ysa Loo Trust dated 2/3/1992.

F4: Shares transferred to the Lip-Bu Tan and Ysa Loo Trust dated 2/3/1992.

F5: Shares transferred to the Lip-Bu Tan and Ysa Loo Trust dated 2/3/1992.

F6: Amount of Securities Beneficially Owned Following Reported Transaction includes: (i) 7,000 shares held by L Tan & N Lee &W Lee Trustees, Pacven Walden Inc. 401(k) PSB FBO Lip-Bu Tan; (ii) 371,388 shares held by Lip-Bu Tan and Ysa Loo Trust dated 2/3/1992; adn (iii) 5,000 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.