Company Announcements

FORM 8.3

PUBLIC OPENING POSITION DISCLOSURE/DEALING DISCLOSURE BY

A PERSON WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE

Rule 8.3 of the Takeover Code (the “Code”)

1.         KEY INFORMATION

(a) Full name of discloser:               Connor, Clark & Lunn Investment
                                          Management Ltd.

(b) Owner or controller of interests and
short positions disclosed, if different
from 1(a):The naming of nominee or        N/A
vehicle companies is insufficient. For a
trust, the trustee(s), settlor and
beneficiaries must be named.

(c) Name of offeror/offeree in relation
to whose relevant securities this form    Gran Tierra Energy Inc.
relates:Use a separate form for each
offeror/offeree

(d) If an exempt fund manager connected
with an offeror/offeree, state this and
specify identity of offeror/offeree:

(e) Date position held/dealing
undertaken:For an opening position        23/10/2024
disclosure, state the latest practicable
date prior to the disclosure

(f) In addition to the company in 1(c)
above, is the discloser making
disclosures in respect of any other party N/A
to the offer?If it is a cash offer or
possible cash offer, state “N/A”

2.         POSITIONS OF THE PERSON MAKING THE DISCLOSURE

If there are positions or rights to subscribe to disclose in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 2(a) or (b) (as appropriate) for each additional class of relevant security.

(a)        Interests and short positions in the relevant securities of the offeror or offeree to which the disclosure relates following the dealing (if any)

Class of relevant security:

                                                  Interests     Short
                                                                positions

                                                  Number  %     Number  %

(1) Relevant securities owned and/or controlled:  382,789 1.25% 851,529 2.78%

(2) Cash-settled derivatives:

(3) Stock-settled derivatives (including options)
and agreements to purchase/sell:

TOTAL:                                            382,789 1.25% 851,529 2.78%

All interests and all short positions should be disclosed.

Details of any open stock-settled derivative positions (including traded options), or agreements to purchase or sell relevant securities, should be given on a Supplemental Form 8 (Open Positions).

(b)        Rights to subscribe for new securities (including directors’ and other employee options)

Class of relevant security in relation to which subscription right exists:

Details, including nature of the rights concerned and relevant percentages:

3.         DEALINGS (IF ANY) BY THE PERSON MAKING THE DISCLOSURE

Where there have been dealings in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 3(a), (b), (c) or (d) (as appropriate) for each additional class of relevant security dealt in.

The currency of all prices and other monetary amounts should be stated.

(a)        Purchases and sales

Class of relevant security Purchase/sale Number of securities Price per unit

USD 0.001 ordinary         Sell          1,100                CAD 8.6573

(b)        Cash-settled derivative transactions

                                  Nature of
                                  dealinge.g.
                  Product         opening/closing a   Number of
Class of relevant descriptione.g. long/short          reference  Price per unit
security          CFD             position,           securities
                                  increasing/reducing
                                  a long/short
                                  position

(c)        Stock-settled derivative transactions (including options)

(i)         Writing, selling, purchasing or varying

                         Writing,    Number of           Typee.g.         Option
Class of Product         purchasing, securities Exercise American, Expiry money
relevant descriptione.g. selling,    to which   price    European  date   paid/
security call option     varying     option     per unit etc.             received
                         etc.        relates                              per unit

(ii)        Exercise

Class of relevant Product         Exercising/       Number of  Exercise price
security          descriptione.g. exercised against securities per unit
                  call option

(d)        Other dealings (including subscribing for new securities)

Class of relevant security Nature of dealinge.g.    Details Price per unit (if
                           subscription, conversion         applicable)

4.         OTHER INFORMATION

(a)        Indemnity and other dealing arrangements

Details of any indemnity or option arrangement, or any agreement or
understanding, formal or informal, relating to relevant securities which may be
an inducement to deal or refrain from dealing entered into by the person making
the disclosure and any party to the offer or any person acting in concert with a
party to the offer:Irrevocable commitments and letters of intent should not be
included. If there are no such agreements, arrangements or understandings, state
“none”

(b)        Agreements, arrangements or understandings relating to options or derivatives

Details of any agreement, arrangement or understanding, formal or informal,
between the person making the disclosure and any other person relating to:(i)
the voting rights of any relevant securities under any option; or(ii) the voting
rights or future acquisition or disposal of any relevant securities to which any
derivative is referenced:If there are no such agreements, arrangements or
understandings, state “none”

(c)        Attachments

Is a Supplemental Form 8 (Open Positions) attached? NO

        24/10/2024
Date of disclosure:

                    Adam Gartland
Contact name:

                    +1 604 685 2020
Telephone number:

Public disclosures under Rule 8 of the Code must be made to a Regulatory Information Service.

The Panel’s Market Surveillance Unit is available for consultation in relation to the Code’s disclosure requirements on +44 (0)20 7638 0129.

The Code can be viewed on the Panel’s website at www.thetakeoverpanel.org.uk.