As filed with the Securities and Exchange Commission on May 6, 2021

Registration No. 333-232014

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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POST-EFFECTIVE AMENDMENT NO. 1

TO

FORM S-3

REGISTRATION STATEMENT

UNDER THE SECURITIES ACT OF 1933

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Perspecta Inc.

(Exact name of registrant as specified in its charter)

14295 Park Meadow Drive

Chantilly, VA 20151

(571) 313-6000

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

John P. Kavanaugh

Perspecta Inc.

14295 Park Meadow Drive

Chantilly, Virginia 20151

(571) 313-6000

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

Copies to:

Richard A. Presutti

Antonio Diaz-Albertini

Milbank LLP

55 Hudson Yards

New York, New York 10001-2163

(212) 530-5000

Approximate date of commencement of proposed sale to the public: Not Applicable

If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. ☐

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, other than securities offered only in connection with dividend or interest reinvestment plans, 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 registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box. ☒

If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. ☐

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 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 provided pursuant to Section 7(a)(2)(B) of Securities Act. ☐

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DEREGISTRATION OF UNSOLD SECURITIES

This Post-Effective Amendment No. 1 relates to the Registration Statement on Form S-3 (No. 333-232014), filed with the Securities and Exchange Commission on June 7, 2019 (the “Registration Statement”), of Perspecta Inc. (the “Company”), to deregister any and all securities, registered but unsold or otherwise unissued as of the date hereof under the Registration Statement, which registered 23,273,341 shares of the Company’s common stock, par value $0.01 per share (the “Common Stock”).

On January 27, 2021, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Jaguar ParentCo Inc., a Delaware corporation (“Parent”), and Jaguar Merger Sub Inc., a Nevada corporation and a direct, wholly owned subsidiary of Parent (“Merger Sub”), providing for, among other things, the merger of Merger Sub with and into the Company (the “Merger”), with the Company surviving the Merger as a wholly owned subsidiary of Parent. The Merger became effective on May 6, 2021, upon the filing of the articles of merger with the Secretary of State of the State of Nevada.

As a result of the Merger, the Company has terminated all offerings of the Common Stock pursuant to the Registration Statement.  In accordance with an undertaking made by the Company in the Registration Statement to remove from registration, by means of a post-effective amendment, any securities registered under the Registration Statement that remain unsold at the termination of the offering, the Company hereby removes from registration all of the Common Stock registered under the Registration Statement as of the date of this Post-Effective Amendment No. 1.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, the registrant, Perspecta Inc., certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this Post-Effective Amendment No. 1 to the Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in Chantilly, Virginia, as of May 6, 2021.

No other person is required to sign this Post-Effective Amendment No. 1 in reliance upon Rule 478 under the Securities Act of 1933, as amended.

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