Gran Tierra Energy Inc.

Report on payments to governments for the year 2023

Introduction

Gran Tierra Energy Inc. ("Gran Tierra") has prepared the following report that sets out details of the payments made to governments for the year ended 31 December 2023 in accordance with the Reports on Payments to Governments Regulations 2014 (2014/3209) as amended by the Reports on Payments to Governments (Amendment) Regulations 2015 (2015/1928) and The Disclosure and Transparency Rule ("DTR 4.3A") issued by the Financial Conduct Authority.

This report is available for download from https://www.grantierra.com/investor-relations/reports-filings/

Basis of preparation

The payments disclosed, which are on a cash basis in U.S Dollars, are based on where the obligation for the payment arose (i.e. at a project or corporate level). Where a payment or a series of related payments do not exceed £86,000, they are not required to be disclosed under the UK Regulations, however this has been disclosed in aggregate at a corporate level for clarity over obligations.

All of the payments disclosed in accordance with the Directive have been made to National Governments of Colombia and Ecuador, either directly or through a Ministry or Department of the National Government and to Local Community Councils or municipalities in Colombia.

Taxes

This represents cash tax calculated on the basis of profits including income or capital gains. Income taxes are usually reflected in corporate income tax returns. The cash payment of income taxes occurs in the year in which the tax has arisen or up to one year later. Income taxes also include any cash tax rebates received from the Government or revenue authority during the year and excludes fines and penalties.

Royalties

This represents cash and in-kind royalties paid to Governments during the year for the extraction of oil or gas. The terms of the royalties are described within Gran Tierra's 2023 Annual Report filed on form 10-K.

Fees

This represents supervision, licensing, permits, project assessment fees and other levies or consideration related to Gran Tierra's exploration and production contracts or to the overall management of our business.

Bonuses

This represents social investment program payments to the local communities or municipalities in Colombia.

Disclosure by Payee

Disclosure by Project