GRAN TIERRA ENERGY INC.

Director's Dealing • Oct 2, 2025

National Storage Mechanism | Additional information

RNS Number : 7340B

Gran Tierra Energy Inc.

02 October 2025

October 1, 2025

Gran Tierra Energy Inc.

(the "Company")

Notification of Transactions in the Company's Shares by Directors and Persons Discharging Managerial Responsibility

The Company announces the following transactions in the Company's common shares undertaken by directors / persons discharging managerial responsibility ("PDMRs").

The notification set out below is provided in accordance with the requirement of Article 19 of the EU Market Abuse Regulation.

Contact Information:

Gary Guidry

President and Chief Executive Officer

Ryan Ellson

Executive Vice President and Chief Financial Officer

Phillip Abraham

Executive Vice President, Legal and Land and Corporate Secretary

(403) 265-3221

[email protected]

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

David Smith, Director

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

Disposition of Common Shares

c)

Price(s) and volume(s)

PDMR	Price(s)	Volume (s)
David Smith	USD 4.58	7,750

d)

Aggregated information

- Aggregated volume

- Price

Price(s)	Volume (s)
USD 4.58	7,750

e)

Date of the transaction

September 26, 2025

f)

Place of the transaction

Outside a trading venue

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