CADENCE DESIGN SYSTEMS INC — Director's Dealing 2010

Aug 16, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CADENCE DESIGN SYSTEMS INC (CDNS)
CIK: 0000813672
Period of Report: 2010-08-12

Reporting Person: LUCAS DONALD L (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-08-12	Common Stock	P	10000	$6.47	Acquired	15000	Indirect
2010-08-12	Common Stock	P	10000	$6.47	Acquired	10000	Indirect
2010-08-12	Common Stock	P	5000	$6.5	Acquired	15000	Indirect
2010-08-13	Common Stock	P	5000	$6.42	Acquired	20000	Indirect

Footnotes

F1: These securities are held by Donald L. Lucas, TTEE, Donald L. & Lygia S. Lucas Trust dtd 12/3/84.

F2: These securities are held by Donald L. Lucas, SUCC TTEE, Donald L. Lucas Profit Sharing Trust dtd 1/1/84.

F3: These securities are held by Donald L. Lucas, SUCC TTEE, Donald L. Lucas Profit Sharing Trust dtd 1/1/84.

F4: These securities are held by Donald L. Lucas, TTEE, Donald L. & Lygia S. Lucas Trust dtd 12/3/84.