Brimstone Investment Corporation Limited (Incorporated in the Republic of South Africa) Registration number 1995/010442/06 Share Code: BRT ISIN: ZAE000015277 Share Code: BRN ISIN: ZAE000015285 ("Brimstone" or the “Company”) Voluntary Quarterly Intrinsic Net Asset Value (“NAV”) disclosure A full analysis of the Intrinsic NAV, together with applicable explanations for the quarter ended 31 March 2023 is set out below. Summary Change 31 March 31 December 31 December 31 December 31 December Dec 2022 to Mar 2023 2023 2022 2021 2020 2019 (%) Intrinsic NAV of Brimstone (Rm) (7.1%) 3 053.8 3 287.2 3 255.6 3 284.8 3 349.3 Intrinsic NAV per share (cents) ¹ (7.5%) 1 225.5 1 325.0 1 314.0 1 299.3 1 419.3 Fully diluted Intrinsic NAV per share (cents) ¹ (7.3%) 1 206.9 1 301.5 1 292.6 1 282.7 1 410.3 Market price per share (cents) Ordinary shares 19.8% 630 526 630 581 765 ‘N’ Ordinary shares 27.2% 716 563 649 650 775 Discount to Intrinsic NAV Ordinary shares 48.6% 60.3% 52.1% 55.3% 46.1% ‘N’ Ordinary shares 41.6% 57.5% 50.6% 50.0% 45.4% Intrinsic NAV analysis by asset An analysis of the Intrinsic NAV of Brimstone as at 31 March 2023 is set out below, including the valuation basis of each asset. Where applicable, Intrinsic NAV is net of ring-fenced debt and potential CGT relating to that asset. Asset % Closing Closing Valuation basis Gross value Debt CGT Mar 2023 Mar 2023 Gross Dec 2022 Dec 2022 Increase / held share price share (R'000) (R'000) (R'000) Intrinsic Intrinsic portfolio Intrinsic Intrinsic (Decrease) at 31 Mar price at NAV NAV per weighting NAV NAV per (%) 2023 31 Dec (R'000) share (%) (R'000) share (R) 2022 (cents) (cents) (R) Oceana² 25.1% 69.37 63.29 Market value per share 2 270 767 - (22 694) 2 248 073 902.2 42.6 2 071 743 835.1 8.0 Sea Harvest ² 53.4% 10.10 12.00 Market value per share 1 611 545 - - 1 611 545 646.7 30.3 1 914 707 771.8 (16.2) Equites 1.8% 15.37 16.84 Market value per share 214 544 - (6 898) 207 646 83.3 4.0 223 733 90.2 (7.6) Phuthuma Nathi 2.8% 134.20 133.11 Market value per share 254 366 - (3 811) 250 555 100.6 4.8 248 935 100.3 0.3 Stadio 5.1% 4.50 4.91 Market value per share 196 043 - (9 694) 186 349 74.8 3.7 200 352 80.8 (7.4) MTN Zakhele Futhi 1.5% 19.50 19.40 Market value per share 35 467 - - 35 467 14.2 0.7 35 285 14.2 - Milpark 12.8% - - Market approach 100 470 - (6 246) 94 224 37.8 1.9 94 224 38.0 (0.5) Investment property 100.0% - - Market approach - - - - - 0.0 65 000 26.2 (100.0) FPG Property Fund 10.2% - - Book value 312 348 - (32 947) 279 401 112.1 5.9 279 401 112.6 (0.4) Aon Re Africa 18.0% - - PE valuation 78 086 - (15 143) 62 943 25.3 1.5 62 943 25.4 (0.4) Obsidian 70.0% - - Book value 65 804 - (6 114) 59 690 24.0 1.2 59 690 24.1 (0.4) SAED 25.0% - - Book value 62 172 - - 62 172 25.0 1.2 61 781 24.9 0.4 Other investments, Various - - Valuation 49 946 - 14 733 64 679 26.0 0.9 71 122 28.7 (9.4) assets & liabilities Cash / (Net debt) 100.0% - - Book value 72 921 (2 181 841) - (2 108 920) (846.3) 1.3 (2 101 674) (847.1) (0.1) 5 324 479 (2 181 841) (88 814) 3 053 824 1 226.0 100.0 3 287 242 1 325.0 (7.5) Intrinsic NAV per share (cents) 2 137 (876) (36) 1 226 Fully diluted Intrinsic NAV per share (cents) 2 104 (862) (35) 1 207 Notes: 1. Based on 249 million shares (December 2022: 248 million shares) in issue, net of treasury shares as calculated below: Number of shares in issue Fully diluted number of shares Gross number of shares in issue 264 850 108 264 850 108 Treasury shares (fully diluted number is net of notionally realised unvested FSPs) (15 668 269) (11 816 901) Net shares in issue for Intrinsic NAV purposes 249 181 839 253 033 207 2. No CGT provided on shareholding in Oceana and Sea Harvest due to potential use of the corporate relief provisions of the Income Tax Act. The Intrinsic NAV information presented has been prepared on a basis consistent with that used in the integrated report for the year ended 31 December 2022, which is available on the Company’s website at www.brimstone.co.za. The above information is the responsibility of the directors and has not been reviewed or reported on by the Company’s auditors. 22 June 2023 Sponsor Nedbank Corporate and Investment Banking, a division of Nedbank Limited