Acquisition of Common Shares through the Company's Employee Share Savings Plan

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Gary Guidry, President and Chief Executive Officer

Sebastien Morin, Chief Operating Officer

Jim Evans, Executive Vice President, Corporate Services

Phillip Abraham, Executive Vice President, Legal and Land

2

Reason for the notification

a)

Position/status

See 1 a) above

b)

Initial notification /Amendment

Initial notification

3

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name

Gran Tierra Energy Inc.

b)

LEI

549300IH2S17MAIUCM32

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Common Shares

Identification code

ISIN:  US38500T2006

b)

Nature of the transaction

Acquisition of Common Shares through the Company's Employee Share Savings Plan

c)

Price(s) and volume(s)

d)

Aggregated information

- Aggregated volume

- Price

e)

Date of the transaction

July 2, 2026

f)

Place of the transaction

Toronto Stock Exchange (TSX)