NCI Navigant Consulting Inc

As filed with the Securities and Exchange Commission on October 15, 2019

Registration No. 333-218041

Registration No. 333-204213

Registration No. 333-181581

Registration No. 333-149427

Registration No. 333-141256

Registration No. 333-135022

Registration No. 333-127988

Registration No. 333-103405

Registration No. 333-81680

Registration No. 333-30267

Registration No. 333-53506

Registration No. 333-30265

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Post-Effective Amendment No. 1 to Form S-8, Registration Statement No. 333-218041

Post-Effective Amendment No. 1 to Form S-8, Registration Statement No. 333-204213

Post-Effective Amendment No. 1 to Form S-8, Registration Statement No. 333-181581

Post-Effective Amendment No. 1 to Form S-8, Registration Statement No. 333-149427

Post-Effective Amendment No. 1 to Form S-8, Registration Statement No. 333-141256

Post-Effective Amendment No. 1 to Form S-8, Registration Statement No. 333-135022

Post-Effective Amendment No. 1 to Form S-8, Registration Statement No. 333-127988

Post-Effective Amendment No. 2 to Form S-8, Registration Statement No. 333-103405

Post-Effective Amendment No. 1 to Form S-8, Registration Statement No. 333-81680

Post-Effective Amendment No. 3 to Form S-8, Registration Statement No. 333-30267

Post-Effective Amendment No. 1 to Form S-8, Registration Statement No. 333-53506

Post-Effective Amendment No. 1 to Form S-8, Registration Statement No. 333-30265

UNDER THE

SECURITIES ACT OF 1933

NAVIGANT CONSULTING, INC. 2017 LONG-TERM INCENTIVE PLAN

NAVIGANT CONSULTING, INC. EMPLOYEE STOCK PURCHASE PLAN

NAVIGANT CONSULTING, INC. AMENDED AND RESTATED 2012 LONG-TERM INCENTIVE PLAN

NAVIGANT CONSULTING, INC. 2005 LONG-TERM INCENTIVE PLAN

NAVIGANT CONSULTING, INC. LONG-TERM INCENTIVE PLAN

NAVIGANT CONSULTING, INC. 2001 SUPPLEMENTAL EQUITY INCENTIVE PLAN

(Full title of the plans)

Edward C. Eich

General Counsel and Secretary

150 North Riverside Plaza, Suite 2100

Chicago, Illinois 60606

(312) 573-5600

(Name, address and 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 provided pursuant to Section 7(a)(2)(B) of the Securities Act.  ☐

DEREGISTRATION OF SECURITIES

These Post-Effective Amendments (these “Post-Effective Amendments”) are being filed by Navigant Consulting, Inc. (“Navigant” or the “Registrant”), to deregister all shares of the Registrant’s common stock, par value $0.001 per share (the “Common Stock”), unsold under the following Registration Statements on Form S-8 (collectively, the “Registration Statements”) filed by the Registrant with the Securities and Exchange Commission:

Pursuant to that certain Agreement and Plan of Merger, by and among the Registrant, Guidehouse LLP, a Delaware limited liability partnership (“Parent”), and Isaac Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Parent (“Sub”), on October 11, 2019, Sub merged with and into the Registrant (the “Merger”), with the Registrant continuing as the surviving corporation. As a result of the Merger, the Registrant became a wholly owned subsidiary of Parent.

As a result of the Merger and transactions related thereto, the Registrant has terminated any and all offerings of the Registrant’s securities pursuant to the Registration Statements. Accordingly, the Registrant hereby terminates the effectiveness of the Registration Statements, and, in accordance with an undertaking made by the Registrant in Item 9 of the Registration Statements to remove from registration, by means of a post-effective amendment, any securities that had been registered for issuance but remain unsold at the termination of the offering, the Registrant hereby removes from registration any and all securities registered but which remain unsold under the Registration Statements as of the date hereof.