Announcement PDF Market Announcement 5 June 2023 Pharmaust Limited (ASX: PAA) – Trading Halt Description The securities of Pharmaust Limited (‘PAA’) will be placed in trading halt at the request of PAA, pending it releasing an announcement. Unless ASX decides otherwise, the securities will remain in trading halt until the earlier of the commencement of normal trading on Wednesday, 7 June 2023 or when the announcement is released to the market. Issued by Sam Dorland Adviser, Listings Compliance 5 June 2023 ASX Limited Market Announcement 1/1 ASX Customer Service Centre 131 279 | asx.com.au 5 June 2023 Mr Sean Maloney Australian Securities Exchange Level 40, Central Park 152-158 St Georges Terrace PERTH WA 6000 Dear Mr Maloney, TRADING HALT REQUEST PharmAust Limited (ASX: PAA & PAAO) hereby makes application for a trading halt of its securities and provides the following information in relation to Listing Rule 17.1: • The Company makes the request pending an announcement of interim analysis results from the Motor Neurone Disease Phase 1/2 Clinical Trial; • The Company requests the securities remain in pre-open until the earlier of an announcement of interim analysis results or the commencement of trade on Wednesday 7 June 2023; and • The Company is not aware of any reason why the trading halt should not be granted. Yours sincerely, Sam Wright Director & Company Secretary PharmAust Limited ABN 35 094 006 023. Suite 116, 1 Kyle Way, Claremont, Western Australia Tel: 08 9202 6814 Fax: 08 9467 6111 www.pharmaust.com