As filed with the Securities and Exchange Commission on August 2, 2021

Registration No. _______

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-8

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

ON SEMICONDUCTOR CORPORATION

(Exact name of registrant as specified in its charter)

5005 E. McDowell Road

Phoenix, Arizona 85008

(Address of Principal Executive Offices) (Zip Code)

ON SEMICONDUCTOR CORPORATION

2000 EMPLOYEE STOCK PURCHASE PLAN

(Full title of the plan)

George H. Cave, Esq.

ON SEMICONDUCTOR CORPORATION

5005 E. McDowell Road

Phoenix, Arizona 85008

(602) 244-5226

(Name, address, telephone number, including area code, of agent for service)

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards pursuant to Section 7(a)(2)(B) of the Securities Act.  ☐

CALCULATION OF REGISTRATION FEE

Explanatory Note

The sole purpose of this registration statement on Form S-8 (this “Registration Statement”) is to register an additional 6,000,000 shares of the common stock, par value $0.01, of ON Semiconductor Corporation (the “Company”) reserved for issuance under the ON Semiconductor Corporation 2000 Employee Stock Purchase Plan, as amended (the “Plan”). This increase was approved by the Company’s Board of Directors on March 17, 2021 and by the Company’s stockholders on May 20, 2021.

Pursuant to General Instruction E to Form S-8, the contents of each of the registration statements on Form S-8 filed by the Company with the Securities and Exchange Commission (the “SEC”) on May 21, 2009 (File No. 333-159381), August 2, 2013 (File No. 333-190344), August 19, 2015 (File No. 333-206471) and August 7, 2017 (File No. 333-219751) are hereby incorporated by reference into this Registration Statement.

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PART II

INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference.

The following documents have been filed by the Company or by the Plan with the SEC pursuant to the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and are incorporated herein by reference, excluding, in each case, information deemed furnished and not filed:

All documents subsequently filed by the Company or by the Plan pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a post-effective amendment to this Registration Statement which indicates that all securities offered have been sold, or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference in this Registration Statement and to be a part hereof from the date of filing of such documents, excluding, in each case, information deemed furnished and not filed. Any statement contained in this Registration Statement or in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained herein or in any subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.

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Item 8. Exhibits.

Unless otherwise indicated below as being incorporated herein by reference to another filing with the SEC, each of the following exhibits is filed herewith:

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SIGNATURES

THE REGISTRANT. Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Phoenix, State of Arizona, on August 2, 2021.

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POWER OF ATTORNEY

Each person whose signature appears below constitutes and appoints Thad Trent, George H. Cave and Lauren C. Bellerjeau and each of them, his or her true and lawful attorneys-in-fact and agents, each with full power of substitution and resubstitution, severally, for him or her and in his or her name, place and stead, in any and all capacities, to sign any and all amendments (including post-effective amendments) to this Registration Statement, and to file the same, with all exhibits thereto and other documents in connection therewith, with the SEC, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or any of them or their or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement on Form S-8 has been signed by the following persons in the capacities and on the dates indicated.

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THE PLAN. Pursuant to the requirements of the Securities Act of 1933, as amended, the trustees (or other persons who administer the Plan) have duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Phoenix, State of Arizona, on August 2, 2021.

ON SEMICONDUCTOR 2000 EMPLOYEE STOCK PURCHASE PLAN

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Exhibit 5.1

August 2, 2021

Board of Directors

ON Semiconductor Corporation

5005 E. McDowell Road

Phoenix, Arizona 85008

Re: Registration Statement on Form S-8 (ON Semiconductor Corporation 2000 Employee Stock Purchase Plan)

Ladies and Gentlemen:

We are acting as counsel to ON Semiconductor Corporation, a Delaware corporation (the “Company”), in connection with its registration statement on Form S-8 (the “Registration Statement”), filed with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), relating to the proposed offering of an aggregate amount of up to 6,000,000 shares (the “Shares”) of common stock, par value $0.01 per share, of the Company, all of which Shares may be issued pursuant to awards under the ON Semiconductor Corporation 2000 Employee Stock Purchase Plan (the “Plan”).

As counsel for the Company, we have examined originals or copies, certified or otherwise identified to our satisfaction, of such documents, corporate records, certificates of public officials and other instruments as we have deemed necessary for the purposes of rendering this opinion and we are familiar with the proceedings taken and proposed to be taken by the Company in connection with the authorization, issuance and sale of the Shares. In our examination, we have assumed the genuineness of all signatures, the authenticity of all documents submitted to us as originals and the conformity with the originals of all documents submitted to us as copies. This opinion letter is given, and all statements herein are made, in the context of the foregoing.

This opinion letter is based as to matters of law solely on the Delaware General Corporation Law, as amended. We express no opinion herein as to any other laws, statutes, ordinances, rules, or regulations. As used herein, the term “Delaware General Corporation Law, as amended” includes the statutory provisions contained therein, all applicable provisions of the Delaware Constitution and reported judicial decisions interpreting these laws.

Based upon, subject to and limited by the foregoing, we are of the opinion that following (i) effectiveness of the Registration Statement, (ii) issuance of the Shares pursuant to the terms of the Plan, and (iii) receipt by the Company of the consideration for the Shares specified in the applicable resolutions of the Board of Directors or a duly authorized committee thereof and the Plan, the Shares will be validly issued, fully paid and nonassessable.

This opinion letter has been prepared for use in connection with the Registration Statement. We assume no obligation to advise you of any changes in the foregoing subsequent to the effective date of the Registration Statement.

We consent to the use of this opinion as an exhibit to the Registration Statement, and we consent to the reference of our name wherever appearing in the Registration Statement and any amendments thereto. In giving such consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act.

Exhibit 23.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of ON Semiconductor Corporation of our report dated February 16, 2021 relating to the financial statements, financial statement schedules and the effectiveness of internal control over financial reporting, which appears in ON Semiconductor Corporation’s Annual Report on Form 10-K for the year ended December 31, 2020.

We also consent to the incorporation by reference in this Registration Statement of our report dated March 25, 2021 relating to the financial statements, which appears in the Annual Report of the ON Semiconductor Corporation 2000 Employee Stock Purchase Plan on Form 11-K for the year ended December 31, 2020.

/s/ PricewaterhouseCoopers LLP

Phoenix, Arizona

August 2, 2021