GRAN TIERRA ENERGY INC.

Declaration of Voting Results & Voting Rights Announcements • Dec 17, 2025

National Storage Mechanism | Additional information

RNS Number : 8522L

Gran Tierra Energy Inc.

17 December 2025

December 17, 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").

This notification is made in accordance with the requirement of Article 19 of the EU Market Abuse Regulation.

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Brooke Wade, 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 Stock, par value $0.001 per share, in Gran Tierra Energy Inc.

Identification code

ISIN:  US38500T2006

b)

Nature of the transaction

Exercise of vested share options under the Company's Employee Stock Purchase Plan - resulting in acquisition and retention of Common Stock

c)

Price(s) and volume(s)

PDMR	Price(s)	Volume (s)
Brooke Wade	USD 3.60	3,021

d)

Aggregated information

- Aggregated volume

- Price

Price(s)	Volume (s)
USD 3.60	3,021

e)

Date of the transaction

December 12, 2025

f)

Place of the transaction

Outside a Trading Venue

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Jim Evans, Executive Vice President, Corporate Services

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)
Jim Evans (PDMR) Marie Evans (PCA - spouse)	USD 3.96 USD 3.96	3,240 2,900

d)

Aggregated information

- Aggregated volume

- Price

Price(s)	Volume (s)
USD 3.96	6,140

e)

Date of the transaction

December 12, 2025

f)

Place of the transaction

Outside a trading venue

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)

PDMR	Price(s)	Volume (s)
Gary Guidry Sebastien Morin Jim Evans Phillip Abraham	USD 3.96 USD 3.96 USD 3.96 USD 3.96	1,071 765 344 612

d)

Aggregated information

- Aggregated volume

- Price

Price(s)	Volume (s)
USD 3.96	2,792

e)

Date of the transaction

December 16, 2025

f)

Place of the transaction

Toronto Stock Exchange (TSX)      

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

+1 (403) 265-3221

[email protected]

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