Gran Tierra Energy (GTE) Corporate presentation summary

Divestiture value and structure

• Colombia and Ecuador divestiture valued at $1.33B; purchaser assumes senior notes and prepayment facility, leaving zero debt at close.

• Total cash proceeds of $315MM: $250MM at close and a $65MM unsecured note due 364 days later; noteholder and prepayment-buyer consents obtained.

• Consideration equals ~97% of after-tax 2P NPV10 of $1.365B; implied premium to the $6.82 20-day VWAP is 83%.

• Pro forma PDP NAV is $12.49 per diluted share, based on $315MM cash proceeds and $165MM Canadian PDP NPV10; targeted completion is December 2026, subject to approvals.

Post-sale portfolio and capital position

• Retained Canada portfolio targets 12–13 MBOEPD and includes 86 MMBOE of 2P reserves; estimated annual interest savings are $80MM and the undrawn Canadian credit facility is C$75MM.

• Pro forma Canadian resources include 80 MMBOE of unrisked 2C contingent resources and 67 MMBOE of unrisked P50 prospective resources; these are not reserves.

• Proceeds are intended to support growth in Canada and Azerbaijan and a potential share repurchase, conditional on closing and stockholder approval.

Canadian growth opportunities

• Four core areas span Clearwater, Central Alberta, Wapiti and Mount Head; July 2026 production was ~9,500 boe/d in Central, ~2,200 boe/d in Wapiti and ~300 boe/d in Clearwater.

• Clearwater Dawson and Seal have 1.26 billion bbl of unrisked P50 OOIP and 54.8 MMbbl of unrisked P50 prospective resources; development concept pairs multilateral wells with water injection from startup.

• Mount Head holds 11.7 MMbbl of unrisked P50 prospective resources across two benches; the play has ~19,200 net acres and 100% working interest.

• Canada-wide prospective resources total 67 MMBOE unrisked gross best estimate, while contingent resources total 80 MMBOE unrisked gross 2C.