ON SEMICONDUCTOR CORP — Director's Dealing 2010

Oct 28, 2010

SEC Form 4/A — Form 4/A

Issuer: ON SEMICONDUCTOR CORP (ONNN)
CIK: 0001097864
Period of Report: 2010-10-26

Reporting Person: COLVIN DONALD A (Exec VP & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-10-26	Common	S	10000.0000	$7.2660	Disposed	495023.0000	Direct

Footnotes

F1: This Form 4/A is being filed to correct the earlier Form 4 filed on 10/28/2010 for the Reporting Person which incorrectly stated that the Reporting Person acquired, rather than sold, 10,000 shares of common stock at a weighted average price of $7.2660 per share. The balance on this Form 4/A has been adjusted to show the correct balance of shares held by the Reporting Person following the 10b5-1 sale transaction.

F2: 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.)

F3: This dispositon transaction was executed in multiple trades at prices ranging from $7.24 to $7.3001. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide, upon request, to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.