CADENCE DESIGN SYSTEMS INC — Director's Dealing 2010

Feb 9, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CADENCE DESIGN SYSTEMS INC (CDNS)
CIK: 0000813672
Period of Report: 2010-02-05

Reporting Person: Huang Charlie X. (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-02-05	Common Stock	F	2191	$5.73	Disposed	69529	Direct
2010-02-08	Common Stock	A	40000	—	Acquired	109529	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-02-08	Non-Qualified Stock Option (right to buy)	$5.6	A	130000	Acquired	2017-02-08	Common Stock (130000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	10844	Indirect
Common Stock	11420	Indirect
Common Stock	244488	Indirect

Footnotes

F1: These securities are held in custodial accounts by reporting Person's spouse for the minor children of reporting person and reporting person's spouse.

F2: These securites are held by Huang-Zhang Trust U/A DTD 6/12/96, of which Reporting Person and Reporting Person's spouse are trustees.

F3: Shares withheld to satisfy tax obligations arising out of vesting of restricted stock.

F4: Option vests at a rate of 1/48th per month.

F5: Grant of performance based incentive stock.