As filed with the Securities and Exchange Commission on April 19, 2016

Registration No. 333-208596

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

AMENDMENT NO. 3

to

FORM S-1

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

SECUREWORKS CORP.

(Exact name of registrant as specified in its charter)

One Concourse Parkway NE

Suite 500

Atlanta, Georgia 30328

(404) 327-6339

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive office)

Michael R. Cote

President and Chief Executive Officer

SecureWorks Corp.

One Concourse Parkway NE

Suite 500

Atlanta, Georgia 30328

(404) 327-6339

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

Copies to:

Approximate date of commencement of proposed sale to the public:

As soon as practicable after the effective date of this Registration Statement.

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933 check the following box.  ¨

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ¨

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ¨

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ¨

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

The registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until the registration statement shall become effective on such date as the Commission, acting pursuant to said Section 8(a), may determine.

EXPLANATORY NOTE

This Amendment No. 3 is being filed for the purpose of filing Exhibits 5.1 and 23.1 and refiling Exhibits 3.1 and 3.2 to the Registration Statement (Registration No. 333-208596). No changes or additions are being made hereby to the prospectus constituting Part I of the Registration Statement or to Item 13, 14, 15, 16(b) or 17 of Part II of the Registration Statement. Accordingly, such prospectus and Items 13, 14, 15, 16(b) and 17 of Part II have not been included in this Amendment No. 3.

PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

(a) Exhibits

II-5

II-6

II-7

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the registrant has duly caused this amendment to registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Atlanta, State of Georgia, on April 19, 2016.

Pursuant to the requirements of the Securities Act of 1933, this amendment to registration statement has been signed by the following persons in the capacities and on the dates indicated:

EXHIBIT INDEX