William A. Schromm Form 4 ON SEMICONDUCTOR / William A. Schromm ownership change

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Schromm William A.

(Last) (First) (Middle)

5005 EAST MCDOWELL ROAD

(Street)

PHOENIX AZ 85008

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ON SEMICONDUCTOR CORP [ ON ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
EVP & Chief Operating Officer

3. Date of Earliest Transaction (Month/Day/Year)
08/07/2017

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common	08/07/2017		A		188,680(1)	A	$0.0000	661,642	D
Common	08/07/2017		F		44,387(2)	D	$16.33	617,255	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This Form 4 reports the acquisition on August 7, 2017 of 188,680 Performance Based Restricted Stock Units ("PBRSUs") from the attainment of a performance goal under an award made to the Reporting Person on March 7, 2016 (the "2016 PBRSU Award"). The 2016 PBRSU Award covered a performance period of six consecutive fiscal quarters beginning with the quarter commencing January 1, 2016 (the "Performance Measurement Period"), and the number of shares eligible for vesting was based upon the Issuer achieving certain Adjusted Non-GAAP EBITDA, market share growth, and revenue growth performance goals. As a result of the Issuer's achievement of the Adjusted Non-GAAP EBITDA performance goals for the Performance Measurement Period, the acquired PBRSUs will vest in two equal tranches, with the first tranche having vested on August 7, 2017.

2. This disposition transaction reflects shares withheld by the Issuer in connection with the 2016 PBRSU Award. On August 7, 2017, certain of the PBRSUs under the 2016 PBRSU Award vested. Certain of the shares underlying such PBRSUs were withheld to satisfy the Reporting Person's withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person.

	Mark N. Rogers, Attorney-in-Fact	08/09/2017
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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