Additional Proxy Soliciting Materials (Form DEFA14A)

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Preliminary Proxy Statement

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

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Definitive Proxy Statement

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Definitive Additional Materials

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Soliciting Material Pursuant to §240.14a-12

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No fee required.

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Fee paid previously with preliminary materials.

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Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a6(i)(1) and 0-11

Hextone, Inc. P.O. Box 9142 Farmingdale, NY 11735 Ricky Campana P.O. Box 123456 Suite 500 51 Mercedes Way Edgewood, NY 11717 FLASHID-JOB# 30# You invested in RPC, INC. and it's time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy material for the shareholder meeting to be held on April 28, 2026. Get informed before you vote View the Notice & Proxy Statement, Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to April 14, 2026. If you would like to request a copy of the material(s) for this and/or future shareholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to [email protected]. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. Smartphone users Point your camera here and vote without entering a control number Vote in Person at the Meeting* April 28, 2026 12:15 PM EST 2170 Piedmont Road NE Atlanta, GA 30324 *If you choose to vote these shares in person at the meeting, you must request a "legal proxy." To do so, please follow the instructions at www.ProxyVote.com or request a paper copy of the materials, which will contain the appropriate instructions. Please check the meeting materials for any special requirements for meeting attendance. Your Vote Counts! 148,294 322,224 1 OF 2 For complete information and to vote, visit www.ProxyVote.com Control #

Vote at www.ProxyVote.com Control # XXXX XXXX XXXX XXXX THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming shareholder meeting. Please follow the instructions on the reverse side to vote these important matters. Voting Items Board Recommends 1. Election of Directors Nominees: 1A Susan R. Bell For 1B Patrick J. Gunning For 1C Richard A. Hubbell For 1D Gary Kolstad For 1E Amy R. Kreisler For 1F Stephen E. Lewis For 1G Ben M. Palmer For 1H Timothy C. Rollins For 1I Wesley N. Slagle For 1J John F. Wilson For 2 To ratify the appointment of Grant Thornton LLP as independent registered public accounting firm for the fiscal year ending December 31, 2026. For 3 To hold a nonbinding vote to approve executive compensation. For NOTE: Such other business as may properly come before the meeting or any adjournment thereof. Under New York Stock Exchange rules, brokers may vote "routine" matters at their discretion if your voting instructions are not communicated to us at least 10 days before the meeting. We will nevertheless follow your instructions, even if the broker's discretionary vote has already been given, provided your instructions are received prior to the meeting date. FLASHID-JOB# 1.00000 322,224 148,294