Company: IXHL
Filing Date: 2025-10-27
Form Type: DEFA14A
Source: 0001213900-25-102656
Chunk: 1

Company: Incannex Healthcare Inc.
Filing Date: 2025-10-27
Form: DEFA14A
Chunk 1
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 the Internet. Follow the instructions below to view the materials and vote online or request a copy. The items to be voted on and location of the annual meeting are on the reverse side. Your vote is important! This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The Proxy Statement and Annual Report are available at: 047BBD When you go online, you can also help the environment by consenting to receive electronic delivery of future materials. Obtaining a Copy of the Proxy Materials – If you want to receive a copy of the proxy materials, you must request one. There is no charge to you for requesting a copy. Please make your request as instructed on the reverse side on or before December 8, 2025 to facilitate timely delivery. 2 N O T The Sample Company MMMMMMMMMMMM MMMMMMMMM 000001 MR A SAMPLE DESIGNATION (IF ANY) ADD 1 ADD 2 ADD 3 ADD 4 ADD 5 ADD 6 ENDORSEMENT_LINE SACKPACK C 1234567890 C O Y MMMMMMM

<div align='center'>Here’s how to order a copy of the proxy materials and select delivery preferences: Current and future delivery requests can be submitted using the options below. If you request an email copy, you will receive an email with a link to the current meeting materials. PLEASE NOTE: You must use the number in the shaded bar on the reverse side when requesting a copy of the proxy materials. — Internet – Go to www.investorvote.com/IXHL. — Phone – Call us free of charge at 1 - 866 - 641 - 4276. — Email – Send an email to investorvote@computershare.com with “Proxy Materials Incannex Healthcare Inc.” in the subject line. Include your full name and address, plus the number located in the shaded bar on the reverse side, and state that you want a paper copy of the meeting materials. To facilitate timely delivery, requests for a paper copy of proxy materials must be received by December 8, 2025. Stockholder Meeting Notice Incannex Healthcare Inc.’s Annual Meeting of Stockholders will be held on December 18, 2025, at 10:00 a.m. Gulf Standard Time, virtually via the Internet at www.meetnow.global/MD59M9U and in person at Business Hub,