Investor Presentaiton

GIBSON ENERGY INVESTOR PRESENTATION Superior Long-Term Shareholder Returns Consistent outperformance of the TSX Composite and TSX Energy indices Total Shareholder Return: Since IPO & 2018 Investor Day (1) Since IPO (June 15, 2011) 250% 200% 150% 100% 50% 0% (50%) (100%) 2011 2012 2013 New Strategy Announced (Investor Day 2018) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Since 2018 Investor Day (January 30, 2018) 100% 75% 50% 25% 0% (25%) (50%) (75%) (100%) 2018 25 (1) Total Shareholder Return as at December 29, 2023. 2019 2020 2021 2022 2023 GEI +172% TSX Composite +137% TSX Energy +19% TSX Energy +65% GEI +65% TSX Composite +58%

View entire presentation