ESSA Pharma Confirms $80M Capital Distribution Paid August 22; Shares Began Trading Ex-Dividend August 25 After Correcting Due Bill Period

ESSA Pharma Inc. ("ESSA," or the "Company") (NASDAQ:EPIX) announced on August 14, 2025 that, in connection with the Company's previously announced return of capital distribution in the aggregate amount of US$80,000,000 (the "Distribution") to the holders of common shares of the Company ("Common Shares" and the holders of such Common Shares, the "Shareholders") as part of the discontinuance and winding-up of the business of the Company pursuant to the Company's previously announced transaction with XenoTherapeutics, Inc. ("Xeno"), a non-profit biotechnology company, under which Xeno will acquire all of the issued and outstanding Common Shares (the "Transaction"), the Nasdaq Stock Market LLC ("Nasdaq") had determined that the ex-dividend date for the Distribution would be August 25, 2025 (the "Ex-Dividend Date"), the first business day after the payment date. The Distribution was paid to Shareholders on August 22, 2025 and Shareholders received approximately $1.6910318 per Common Share in the Distribution (subject to applicable withholding).

The press release issued by the Company on August 14, 2025, inadvertently stated that the Common Shares would trade with "due bills" representing an assignment of the right to receive the Distribution during the period from August 19, 2025 through and including August 25, 2025 (the "Due Bill Period"). The correct Due Bill Period was in fact August 19, 2025 through and including August 22, 2025. Shareholders should be advised that the Distribution was paid to Shareholders on August 22, 2025, and as a result Common Shares did not trade with due bills on August 25, 2025 and instead began trading on an "ex-dividend" basis as of such date.