ON SEMICONDUCTOR CORP — Director's Dealing 2013

Feb 28, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ON SEMICONDUCTOR CORP (ONNN)
CIK: 0001097864
Period of Report: 2013-02-26

Reporting Person: GUTMANN BERNARD (Exec VP & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-02-26	Common	A	2000.0000	$7.9500	Acquired	100552.0000	Direct
2013-02-26	Common	F	738.0000	$7.9500	Disposed	99814.0000	Direct

Footnotes

F1: This transaction reports the acquisition, effective February 26, 2013, of 2,000 shares of common stock resulting from the attainment of a performance goal under an earlier Performance Based Restricted Stock Units Award, as described more below. The Compensation Committee of the issuer originally awarded 12,000 Performance Based Restricted Stock Units to the Reporting Person with an effective grant date of February 16, 2010 subject to the Issuer's 2000 Stock Incentive Plan and a related award agreement ("2010 PBRSU Award"). The 2010 PBRSU Award vested generally over a three-year period, but only upon the Issuer achieving certain revenue and adjusted non-GAAP earnings before interest, taxes, depreciation and amortization ("EBITDA") minimum or maximum performance measurements as set forth in the 2010 PBRSU Award agreement.

F2: This disposition transaction represents shares withheld by the Issuer pursuant to the Reporting Person's 2010 PBRSU
Award and related award agreements. On February 26, 2013, certain of these units vested. These shares were withheld
to satisfy the Reporting Person's withholding obligations for various taxes and similar items. The Issuer will pay
these taxes on behalf of the Reporting Person.