ON SEMICONDUCTOR CORP — Director's Dealing 2010

Apr 16, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ON SEMICONDUCTOR CORP (ONNN)
CIK: 0001097864
Period of Report: 2010-04-14

Reporting Person: CAVE GEORGE H (SVP, Gen Cnsl, CC&EO, & Sec)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-04-14	Common	M	10000	$5.93	Acquired	77046	Direct
2010-04-14	Common	S	10000	$8.75	Disposed	67046	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-04-14	Stock Option (right to buy)	$5.93	M	10000	Disposed	2018-03-03	Common (10000)	Direct

Footnotes

F1: These transactions were made pursuant to the Reporting Person's existing Rule 10b5-1 plan (i.e. a stock trading plan designed to comply with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended).

F2: Includes 500 shares acquired by Reporting Person under Issuer's Employee Stock Purchase Plan from 1/1/2010 through 3/31/2010.