Your Vote Counts! *Please check the meeting materials for any special
requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares. Smartphone users Point your camera here and vote without entering a control number For complete information and to vote, visit
www.ProxyVote.com Control # V85353-P46185 NOBLE CORPORATION PLC 2101 CITYWEST BOULEVARD, SUITE 600 HOUSTON, TX 77042 NOBLE CORPORATION PLC 2026 Annual General Meeting Vote by April 27, 2026 11:59 PM ET You invested in NOBLE
CORPORATION PLC and it’s time to vote! You have the right to vote on proposals being presented at the Annual General Meeting. This is an important notice regarding the availability of proxy materials for the shareholder meeting to be held
on April 29, 2026. Get informed before you vote View the Notice and Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to April 15, 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 sendmaterial@proxyvote.com. 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. Vote in Person at the Meeting* April 29, 2026 11:30 AM CT Noble Corporation plc 2101 CityWest Boulevard, Suite
600 Houston, TX 77042 USA