UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

SCHEDULE 13D

(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO

§ 240.13d-2(a)

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 8)

National CineMedia, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

635309107

(CUSIP Number)

Michael D. Cavalier

Executive Vice President, General Counsel and Secretary

Cinemark Holdings, Inc.

3900 Dallas Parkway, Suite 500

Plano, Texas 75093

(972) 665-1000

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

June 18, 2018

(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

EXPLANATORY NOTE

This Amendment No. 8 (“Amendment No. 8”) amends the Schedule 13D first filed on March 28, 2011, and as amended subsequently (the “Schedule 13D”), by Cinemark Holdings, Inc. (the “Reporting Person”) with respect to the common stock, par value $0.01 per share of the Issuer (the “Common Stock”). This Amendment No. 8 reflects changes to Items 3, 4 and 5 of the Schedule 13D due to the expected acquisition by Cinemark USA, Inc., a wholly-owned subsidiary of the Reporting Person, of NCM Units pursuant to the Unit Purchase Agreement described in Item 3, thereby increasing the Reporting Person’s investment in the Issuer. Capitalized terms used but not otherwise defined herein shall have their respective meanings under the Schedule 13D.

Item 3 is hereby amended to add the following:

On June 18, 2018, the Reporting Person, through its wholly-owned subsidiary, Cinemark USA, Inc. entered into that certain Unit Purchase Agreement with American Multi-Cinema, Inc. and AMC Starplex, LLC (collectively, “AMC”), pursuant to which Cinemark USA, Inc. will acquire, upon satisfaction of all customary closing conditions, 10,738,740 NCM Units held by AMC. The aggregate purchase price is approximately $78.40 million, subject to customary adjustments.

Item 4 is hereby amended to add the following:

The Reporting Person is acquiring the NCM Units referred to in Item 3 of this Amendment No. 8 for investment purposes. Apart from continuing to give effect to the Common Unit Adjustment Agreement, there are no plans or proposals that would related to result in any of the events enumerated in Items 4(a)-(j).

Item 5 is hereby amended as follows:

(a) Including the expected acquisition of the NCM Units referred to in this Amendment No. 8, the Reporting Person, through its wholly-owned subsidiary, Cinemark USA, Inc. and its wholly-owned subsidiary Cinemark Media, Inc., currently may be deemed to beneficially own 39,518,644 shares of Common Stock. The NCM Units are redeemable on a one-for-one basis for Common Stock of the Issuer or cash payment equal to the market price of one share of Common Stock. The Reporting Person’s beneficial ownership of 39,518,644 shares of Common Stock equals approximately 33.34% of the Issuer’s issued and outstanding shares of Common Stock on an as-converted basis as of the filing date (calculated based on 79,003,606 shares of Common Stock outstanding as of May 23, 2018, as reported in the Issuer’s definitive proxy statement on Schedule 14A, dated June 11, 2018).

Neither the filing of this Amendment No. 8 nor any of its contents shall be deemed to constitute an admission that any executive officer or director of the Reporting Person or any of its subsidiaries listed on Schedule A hereto, is the beneficial owner of the Common Stock subject of this Amendment No. 8 for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed.

Schedule A

Directors and Executive Officers

The name, principal occupation and business address of each director and executive officer of the Reporting Person are set forth below. All of the persons listed below are citizens of the United States of America, unless otherwise indicated.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.