Updated Quotation Notice - Rua Bioscience Rights (“RUARB")

20/11/2025 15:03 NZDT, OFFER3

Following the announcement from RUA regarding the extension of closing date for the rights offer from Monday, 24 November 2025 to Monday, 8 December 2025, please see attached an updated Quotation Notice.

UPDATED QUOTATION NOTICE: NZX MAIN BOARD

RUA BIOSCIENCE LIMITED (“RUARB”) RIGHTS

Issuer: Rua Bioscience Limited (“RUA”)

Ticker Code: RUARB

ISIN: NZRUAE0006S6

Details of Issue: A pro-rata renounceable rights issue of 1 new share for every 3 existing shares held on the Record Date.

Ratio (New: Existing): 1 : 3

Exercise Price: NZ$0.025 per new share

Reference Price: Calculated as head share price prior to quotation minus the Exercise Price

Issue Price Payable: In full on application

Registrar: Computershare Investor Services Limited (“RMLT”)

Settlement Status: NZCDC Settlement System

Key Dates

Ex Rights Date: Friday, 7 November 2025

Rights Commence Trading: Friday, 7 November 2025

Record Date: 5pm, Monday, 10 November 2025

Letters of Entitlement sent to Shareholders: Tuesday, 11 November 2025

Offer Opens: Tuesday, 11 November 2025

Rights Quotation Ceases: Monday, 8 December 2025

Offer Closes: Friday, 12 December 2025

Allotment and commencement of trading of New Shares (retail offer): Thursday, 18 December 2025

Mark Peterson

Chief Executive Officer

NZX Limited

20 November 2025