Bass Oil Limited Level 5, 11-19 Bank Pl., T + 61 3 9927 3000 admin@bassoil.com.au ACN: 008 694 817 Melbourne 3000 F + 61 3 9614 6533 www.bassoil.com.au Victoria, Australia ASX Announcement Release date: 24 June 2026 Top 20 Option Holders and Distribution Schedule Bass Oil Limited (ASX:BAS) is an Australian-listed oil producer that holds a majority interest in fourteen permits in the Cooper Basin including the 100% owned Worrior and Padulla oil fields and a 55% interest in an Indonesian KSO. Bass is debt free and committed to creating Shareholder value. Bass Oil Limited (“BAS” or “the Company”) refers to the Appendix 2A Application for Quotation of Securities released today. Attached is further information containing the top 20 option holders and distribution schedule for the new class of quoted securities, BASOD, in accordance with Listing Rule 3.10.5. The expiry date of the options will be 23 June 2028. The terms and conditions of the options were outlined in the Prospectus dated 29 May 2026, which can be found at the following link: https://bassoil.com.au/announcements. This announcement has been authorised for release to the market by the Managing Director. For further information please contact: Robyn Hamilton Company Secretary Bass Oil Limited Ph: +61 3 9927 3000 Email: robyn.hamilton@bassoil.com.au MUFG Corporate Markets A division of MUFG Pension & Market Services PAGE NUMBER : 1 REPORT DATE : 24/06/2026 REPORT TIME : 09.33.09 BASS OIL LIMITED FIRST 20 INVESTORS REPORT WEDNESDAY 24 JUNE 2026 Current % Issued Rank Investor Balance Capital Security: BASOD - OPTIONS @ $0.0945 EXP 22/06/2028 1 PAC PARTNERS SECURITIES PTY 2,817,444 8.87% LTD 2 NETWEALTH INVESTMENTS LIMITED 2,539,683 8.00% <WRAP SERVICES A/C> 3 WARBONT NOMINEES PTY LTD 1,984,127 6.25% <SETTLEMENT ENTREPOT A/C> 4 HAWKSBURN CAPITAL PTE LTD 1,587,302 5.00% <METHUSELAH STRATEGIC FND A/C> 5 10 BOLIVIANOS PTY LTD 1,417,622 4.47% 6 BNP PARIBAS NOMS 1,190,477 3.75% PTY LTD 7 MR CRAIG RUSSELL STRANGER 1,063,492 3.35% 8 MR LIAM JOHN RIBUSH 1,031,746 3.25% 9 MR WILLIAM EVAN CROSS 801,588 2.53% 10 PIGEQUITY PTY LTD 793,651 2.50% 11 EMERGING EQUITIES PTY LTD 733,334 2.31% 12 THE JMS FOUNDATION PTY LTD 634,921 2.00% <THE JMS FOUNDATION A/C> 13 HELMAR INVESTMENTS PTY LTD 515,873 1.62% <THE TOMAN FAMILY S/F A/C> 14 MR LAWRENCE JOSEPH CHARLES 420,635 1.33% GRECH 15 SOZEN PTY LTD 396,826 1.25% <PAULA NICHOLSON FAMILY A/C> Confidential MUFG Corporate Markets A division of MUFG Pension & Market Services PAGE NUMBER : 2 REPORT DATE : 24/06/2026 REPORT TIME : 09.33.09 BASS OIL LIMITED FIRST 20 INVESTORS REPORT WEDNESDAY 24 JUNE 2026 Current % Issued Rank Investor Balance Capital 16 FOXTAIL PTY LTD 327,225 1.03% 17 RIYA INVESTMENTS PTY LTD 327,225 1.03% 18 MR CONSTANTINE DIFFERDING + 317,461 1.00% MRS TONIE MAREE DIFFERDING <DIFFERDING SUPER FUND A/C> 19 ELI CAPITAL PTY LIMITED 317,461 1.00% 20 MR DYLAN RANDS 317,461 1.00% Investors TOTAL FOR TOP 20: 19,535,554 20 61.54% Investors TOTAL IN THIS REPORT: 19,535,554 20 61.54% TOTAL OTHER INVESTORS: 12,210,479 105 38.46% GRAND TOTAL: 31,746,033 125 100.00% end of report Confidential MUFG Corporate Markets A division of MUFG Pension & Market Services PAGE NUMBER : 1 REPORT DATE : 24/06/2026 REPORT TIME : 09.32.25 BASS OIL LIMITED INVESTOR RANGES WEDNESDAY 24 JUNE 2026 Ranges Investors Securities % Issued Capital Security Code : BASOD OPTIONS @ $0.0945 EXP 22/06/2028 Holding Type : Issuer 1 to 1000 0 0 .00 1001 to 5000 0 0 .00 5001 to 10000 0 0 .00 10001 to 100000 0 0 .00 100001 and Over 1 126,984 .40 Total 1 126,984 .40 Holding Type : CHESS 1 to 1000 0 0 .00 1001 to 5000 0 0 .00 5001 to 10000 1 7,937 .03 10001 to 100000 57 3,028,977 9.54 100001 and Over 66 28,582,135 90.03 Total 124 31,619,049 99.60 Totals for Security Code BASOD 1 to 1000 0 0 .00 1001 to 5000 0 0 .00 5001 to 10000 1 7,937 .03 10001 to 100000 57 3,028,977 9.54 100001 and Over 67 28,709,119 90.43 Total 125 31,746,033 100.00 The number of security investors holding less than a marketable parcel of 0 securities ($.000 on / /) is 0 and they hold 0 securities. end of report Confidential