Announcement PDF Monthly Report July 2026 Rivco Australia Limited (ASX:RIV) 1 SHARES ON ISSUE: 158,085,061 WATER ASSETS: $312 million Net Asset Value (Pre-tax) $1.77 per share (unaudited) Net Asset Value (Post-tax) $1.60 per share (unaudited) Closing Share Price $1.42 per share Southern Basin Dam Storages – 31 July 2026 Dartmouth Hume Eildon Blowering Burrinjuck Menindee Average* Current Month 71% 56% 52% 55% 52% 32% 56% Previous Month 67% 36% 43% 44% 42% 32% 47% Previous Year 68% 46% 57% 56% 54% 79% 60% MARKET CAP: $224 million * Weighted Average Key Highlights • Pre-tax NAV increased by 1 cent to $1.77 per share, with new-season allocations partly offset by softer high security entitlement values. • Strong winter rainfall lifted Southern Basin weighted-average dam storages to 56% at 31 July 2026, from 47% at 30 June 2026. • General security allocations reached 12% in the NSW Murray and 22% in the Murrumbidgee. Improved water availability typically places downward pressure on spot prices, highlighting the value of having 81% of the portfolio leased. • Allocation prices ended 31 July at: ~$430/ML in the Lower Murray, ~$400/ML in the Murrumbidgee, ~$380/ML in the Goulburn and ~$320/ML in the Upper Murray. • Ms Kaitlin Smith was appointed Company Secretary on 3 July 2026. The Company thanks Ms Katelyn Adams for her significant contribution as Company Secretary since February 2019. Portfolio Snapshot This announcement has been authorised for release by the Chairman of Rivco Australia Limited (“Rivco” or “the Company”). This document contains summary informationabout Rivco, its subsidiaries and their respective activities current as at the date of this document unless otherwise stated. This document does not contain all the informationabout Rivco's assets and liabilities, financial positionand performance, profits and losses and prospects and does not purport to be complete or comprise all information whichis relevant to an investment decision or that would be required in a prospectus or product disclosure statement prepared in accordance with the requirements of the Corporations Act 2001 (Cth). This document should be read in conjunctionwith Rivco's other periodic and continuous disclosure announcements lodged with ASX which are available at www.asx.com.au. The release, publication or distribution of this document (includingan electronic copy) outside of Australia may be restricted by law. This document may contain forward looking statements, includingstatements regarding Rivco's intentions, beliefs or current expectations about its business and operations, and market conditions. Forward looking statements are provided as a general guide only and should not be relied upon as an indication orguarantee of future performance. This document does not constitute investment, tax, legal or any other form of advice or recommendation andwas prepared without regard to the specific objectives, financial situation or needsof any particular person. Before making an investment decision, you should make your own enquiries and investigations and obtain your own professional advice. Lachlan Campbell Executive Manager - Corporate lachlan.campbell@rivco.com.au +61 410 107 158 Lachlan Beech Executive Manager – Portfolio & Trading lachlan.beech@rivco.com.au +61 414 742 197 Contact Details 61.3 GL WATER ENTITLEMENTS 3.4 yrs WEIGHTED AVERAGE LEASE EXPIRY (WALE) 7.5% DIVIDEND YIELD (GROSS)2 5.3% DIVIDEND YIELD (CASH)3 1. Leased percentage increased by 1% (to 81%) during the monthdue to lower unleasedentitlement values,rather than new leases. 2. Calculated as the cash dividends paid over the previous12 months,grossed up for franking credits, divided by the EOM share price. 2. Calculated as the cash dividends paid over the previous12 months, divided by the EOM share price (relevantfor non-residentinvestors). Awarded Allocation Percentages – 3 August 2026 Goulburn VIC Murray NSW Murray Murrumbidgee SA Murray High Security 35% 40% 97% 95% 100% General Security* 0% 0% 12% 22% N/A *GeneralSecurityentitlements in NSW share similar characteristicsto Low Reliabilityentitlementsin Victoria. 81% % OF PORTFOLIO LEASED1 7.4 cps CASH DIVIDENDS PAID (LAST 12 MONTHS)