UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

(Rule 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

(Amendment No. )

Filed by the Registrant ☐

Filed by a Party other than the Registrant ☒

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☐ Definitive Proxy Statement

☐ Definitive Additional Materials

☒ Soliciting Material Under § 240.14a-12

ROGERS CORPORATION

(Name of Registrant as Specified In Its Charter)

STARBOARD VALUE LP

STARBOARD VALUE AND OPPORTUNITY MASTER FUND LTD

STARBOARD VALUE AND OPPORTUNITY S LLC

STARBOARD VALUE AND OPPORTUNITY C LP

STARBOARD VALUE R LP

STARBOARD VALUE AND OPPORTUNITY MASTER FUND L LP

STARBOARD VALUE L LP

STARBOARD VALUE R GP LLC

STARBOARD X MASTER FUND LTD

STARBOARD VALUE GP LLC

STARBOARD PRINCIPAL CO LP

STARBOARD PRINCIPAL CO GP LLC

JEFFREY C. SMITH

PETER A. FELD

GAVIN T. MOLINELLI

JACQUES CROISETIÈRE

ARMAND F. LAUZON, JR.

SUSAN C. SCHNABEL

(Name of Persons(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check all boxes that apply):

☒ No fee required

☐ Fee paid previously with preliminary materials

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

Starboard Value LP, together with the other participants named herein (collectively, “Starboard”), intends to file a preliminary proxy statement and accompanying WHITE proxy card with the Securities and Exchange Commission (the “SEC”) to be used to solicit votes for the election of its slate of highly-qualified director nominees at the 2023 annual meeting of shareholders (the “Annual Meeting”) of Rogers Corporation, a Massachusetts corporation (the “Company”).

On February 6, 2023, Starboard filed its Schedule 13D with respect to the Company announcing its nomination of a slate of highly-qualified director nominees for election at the Annual Meeting. A copy of Starboard’s Schedule 13D is attached hereto as Exhibit 1 and is incorporated herein by reference.

CERTAIN INFORMATION CONCERNING THE PARTICIPANTS

Starboard Value LP, together with the other participants named herein (collectively, "Starboard"), intends to file a preliminary proxy statement and accompanying WHITE proxy card with the Securities and Exchange Commission ("SEC") to be used to solicit votes for the election of its slate of highly-qualified director nominees at the 2023 annual meeting of shareholders of Rogers Corporation, a Massachusetts corporation (the "Company").

STARBOARD STRONGLY ADVISES ALL STOCKHOLDERS OF THE COMPANY TO READ THE PROXY STATEMENT AND OTHER PROXY MATERIALS AS THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. SUCH PROXY MATERIALS WILL BE AVAILABLE AT NO CHARGE ON THE SEC’S WEB SITE AT HTTP://WWW.SEC.GOV. IN ADDITION, THE PARTICIPANTS IN THIS PROXY SOLICITATION WILL PROVIDE COPIES OF THE PROXY STATEMENT WITHOUT CHARGE, WHEN AVAILABLE, UPON REQUEST. REQUESTS FOR COPIES SHOULD BE DIRECTED TO THE PARTICIPANTS’ PROXY SOLICITOR.

The participants in the proxy solicitation are anticipated to be Starboard Value and Opportunity Master Fund Ltd (“Starboard V&O Fund”), Starboard Value and Opportunity S LLC (“Starboard S LLC”), Starboard Value and Opportunity C LP (“Starboard C LP”), Starboard R Value R LP (“Starboard R LP”) , Starboard Value and Opportunity Master Fund L LP (“Starboard L Master”), Starboard Value L LP (“Starboard L GP”), Starboard Value R GP LLC (“Starboard R GP”), Starboard X Master Fund Ltd (“Starboard X Master”), Starboard Value LP, Starboard Value GP LLC (“Starboard Value GP”), Starboard Principal Co LP (“Principal Co”), Starboard Principal Co GP LLC (“Principal GP”), Jeffrey C. Smith, Peter A. Feld, Gavin T. Molinelli, Jacques Croisetière, Armand F. Lauzon, Jr. and Susan C. Schnabel.

As of the close of business on February 6, 2023, Starboard V&O Fund beneficially owned directly 737,990 shares of Common Stock, par value $1.00 per share, of the Company (the “Common Stock”). As of the close of business on February 6, 2023, Starboard S LLC directly owned 86,288 shares of Common Stock. As of the close of business on February 6, 2023, Starboard C LP directly owned 64,914 shares of Common Stock. Starboard R LP, as the general partner of Starboard C LP may be deemed the beneficial owner of an aggregate of 64,914 shares of Common Stock owned by Starboard C LP. As of the close of business on February 6, 2023, Starboard L Master directly owned 36,808 shares of Common Stock. Starboard L GP, as the general partner of Starboard L Master, may be deemed the beneficial owner of the 36,808 shares of Common Stock owned by Starboard L Master. Starboard R GP, as the general partner of Starboard R LP and Starboard L GP, may be deemed the beneficial owner of an aggregate of 101,722 shares of Common Stock owned by Starboard C LP and Starboard L Master. As of the close of business on February 6, 2023, Starboard X Master directly owned 168,651 shares of Common Stock. As of the close of business on February 6, 2023, 127,349 of Common Stock were held in an account managed by Starboard Value LP (the “Starboard Value LP Account”). Starboard Value LP, as the investment manager of each of Starboard V&O Fund, Starboard C LP, Starboard L Master, Starboard X Master and the Starboard Value LP Account and the manager of Starboard S LLC, may be deemed the beneficial owner of an aggregate of 1,222,000 shares of Common Stock directly owned by Starboard V&O Fund, Starboard S LLC, Starboard C LP, Starboard L Master, Starboard X Master and held in the Starboard Value LP Account. Each of Starboard Value GP, as the general partner of Starboard Value LP, Principal Co, as a member of Starboard Value GP, Principal GP, as the general partner of Principal Co, and Messrs. Smith and Feld, as members of Principal GP and as members of each of the Management Committee of Starboard Value GP and the Management Committee of Principal GP, may be deemed the beneficial owner of 1,222,000 shares of Common Stock directly owned by Starboard V&O Fund, Starboard S LLC, Starboard C LP, Starboard L Master, Starboard X Master and held in the Starboard Value LP Account. As of the close of business on February 6, 2023, Mr. Molinelli did not own any shares of Common Stock. As of the close of business on February 6, 2023, Mr. Croisetière beneficially owned 218 shares of Common Stock. As of the close of business on February 6, 2023, Mr. Lauzon beneficially owned 1,000 shares of Common Stock. As of the close of business on February 6, 2023, Ms. Schnabel beneficially owned 150 shares of Common Stock.