W&T Offshore Incremental Reserves and HSE&R Performance

SIGNIFICANT RESERVE APPRECIATION FROM INITIAL BOOKINGS¹ GROSS EUR (MMBoe) Current 1P > Initial 2P booking Current 1P > Initial 3P booking 220 200 +18 180 160 140 200 182 168 163 145 120 118 100 80 60 40 40 20 20 0 Year 1 4 8 Year 3 Year 1 W&T Mobile Bay Complex +8 22 30 30 22 50 50 58 Current 1P > Initial 2P booking 1P Reserves 2P Reserves 3P Reserves 35 11 Year 9 Year 1 MAHOGANY T SAND² 1) Based on year-end 2022 reserve report at SEC pricing (1P Life) $94.14/Bbl and $6.36/MMBtu 2) Initial 1P booking includes A-14 well only; YE 2021 1P booking includes A-14, A-18 and A-19 wells; 2P & 3P includes additional development wells 12 W&T OFFSHORE | NYSE:WTI +6 59 59 47 41 Year 9 MC 698 - Big Bend (DW Field) W&T OFFSHORE

View entire presentation