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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
813672	Cadence Design Systems Inc	CDNS	Services-Prepackaged Software (7372)	770148231

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1008463	Bu Lip Tan	2655 Seely Avenue, Bldg 5 San Jose CA 95134	President And Ceo	No	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2011-08-15	33,333	$0.00	426,721	No	5	Z	Indirect	By Trust
Common Stock	Acquisiton	2011-08-15	16,666	$0.00	443,387	No	5	Z	Indirect	By Trust
Common Stock	Acquisiton	2011-08-15	16,667	$0.00	460,054	No	5	Z	Indirect	By Trust
Common Stock	Disposition	2011-08-15	33,333	$0.00	349,997	No	5	Z	Direct
Common Stock	Disposition	2011-08-15	16,666	$0.00	333,331	No	5	Z	Direct
Common Stock	Disposition	2011-08-15	16,667	$0.00	316,664	No	5	Z	Direct
Common Stock	Acquisiton	2011-08-19	10,000	$8.42	470,054	No	4	P	Indirect	By Trust

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	5	Z	Indirect	By Trust
No	5	Z	Indirect	By Trust
No	5	Z	Indirect	By Trust
No	5	Z	Direct
No	5	Z	Direct
No	5	Z	Direct
No	4	P	Indirect	By Trust

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	31,400	Indirect	Held By IRA

Footnotes

Shares held by IRA FBO Lip-Bu Tan DB Securities Inc. Custodian Rollover Account DTD 5/19/97.
Shares transferred to the Lip-Bu Tan and Ysa Loo Trust dated 2/3/1992.
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) 448, 054 shares held by Lip-Bu Tan and Ysa Loo Trust dated 2/3/1992; and (iii) 15,000 shares held by A&E Investment LLC, the sole member of which is teh Lip-Bu Tan and Ysa Loo Trust dated 2/3/1992.