​
 Exhibit 99.3​
[MISSING IMAGE: px_26ihsholdproxy2pg01-4c.jpg]
Your Vote Counts!IHS HOLDING LIMITED1 CATHEDRAL PIAZZA123 VICTORIA STREETLONDON, SW1E 5BP UNITED KINGDOMIHS HOLDING LIMITED2026 Annual General MeetingVote by October 7, 202611:59 PM ETVoteP56839You invested in IHS HOLDING LIMITED 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 October 8, 2026.T03079-P56839P56839You invested in IHS HOLDING LIMITED 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 October 8, 2026.Get informed before you voteView the Notice and Proxy Statement online OR you can receive a free paper or email copy of the material(s) by requesting prior to September 24, 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.Shareholder
Meeting RegistrationTo vote and/or attend the meeting, go to the “Attend a Meeting” link at www.ProxyVote.com.For complete information and to vote, visit www.ProxyVote.com Control #Smartphone usersPoint your camera here and vote without entering a control numberETVote in Person at the Meeting*October 8, 20261:00 PM London TimeThe offices of IHS Holding Limited1 Cathedral Piazza123 Victoria StreetLondon SW1E 5BPUnited Kingdom*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.​
​
[MISSING IMAGE: px_26ihsholdproxy2pg02-4c.jpg]
Vote at www.ProxyVote.comTHIS IS NOT A VOTABLE BALLOTThis 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 ItemsBoard Recommends1. To elect Sam Darwish, William Saad, Ursula Burns, John Ellis Bush, Maria Carolina Lacerda, Nicholas Land,Phuthuma Nhleko and Aniko Szigetvari to serve as directors, in each case until the Company’s annual general meeting to be held for the year ending December 31, 2027, or until their earlier death, resignation, disqualification or removal.Nominees:1a. Sam DarwishFor1b. William SaadFor1c. Ursula BurnsFor1d. John Ellis BushFor1e. Maria Carolina LacerdaFor1f. Nicholas LandFor1g. Phuthuma NhlekoFor1h. Aniko SzigetvariForPrefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click “Delivery Settings”.