Gran Tierra director buys 4,500 shares at $10.04

Gran Tierra Energy director Alison Redford exercised 4,500 stock options, bringing her direct common share holdings to 4,965.

Available on EDGAR 09/17/2026 - 08:35 PM EDT Accepted by SEC EDGAR 09/17/2026 - 08:34 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Redford Alison reported disposition transactions in a Form 4 filing for GTE. The filing lists transactions totaling 4,500 shares on September 15, 2026. Following the reported transactions, holdings were 4,965 shares.

Insider Trade Summary

4,500 shares exercised/converted

Exercise 1 txn

Insider Redford Alison

Role Director

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to buy) F1	4,500	$0.00	$0.00

Holdings After Transaction: Stock Option (Right to buy) — 4,965 contracts (Direct)

Footnotes (1)

1. F1. Price of security was transacted in Canadian currency and converted to U.S. currency.

Key Figures

Options exercised: 4,500 options Conversion or exercise price: $10.04 per share Underlying shares acquired: 4,500 shares +3 more

6 metrics

Options exercised 4,500 options Stock options exercised into common stock on September 15, 2026

Conversion or exercise price $10.04 per share Conversion or exercise price for the 4,500 stock options, originally in Canadian currency and converted to U.S. dollars

Underlying shares acquired 4,500 shares Common shares underlying the exercised stock options

Direct holdings after transaction 4,965 shares Alison Redford’s direct Gran Tierra Energy common stock holdings following the option exercise

Transaction date September 15, 2026 Date of reported stock option exercise

Exercise and expiration date of option August 31, 2026 Reported exercise and expiration date for the stock option prior to reporting

Key Terms

Stock Option (Right to buy), derivative security, conversion or exercise price, Rule 10b5-1

4 terms

Stock Option (Right to buy) financial

"The transaction involved a Stock Option (Right to buy) as a derivative security"

derivative security financial

"The transaction involved a Stock Option (Right to buy) as a derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

conversion or exercise price financial

"The options had a $10.04 conversion or exercise price per share"

Rule 10b5-1 regulatory

"The filing indicates the transaction was not made under a Rule 10b5-1 trading plan"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did GTE director Alison Redford report?

Alison Redford reported exercising 4,500 stock options for Gran Tierra Energy common stock on September 15, 2026, converting them into common shares at a stated conversion or exercise price of $10.04 per share in U.S. currency after conversion from Canadian dollars.

How many GTE shares does Alison Redford hold after this Form 4 transaction?

Following the reported option exercise, Alison Redford directly holds 4,965 shares of Gran Tierra Energy common stock. This figure reflects her direct ownership after converting the 4,500 stock options into common shares in the September 15, 2026 transaction.

What was the exercise price of the stock options reported in the GTE Form 4?

The stock options exercised by Alison Redford had a conversion or exercise price of $10.04 per share. The filing notes that the price was originally in Canadian currency and was converted to U.S. currency for reporting purposes.

What type of security did the GTE Form 4 transaction involve?

The transaction involved a Stock Option (Right to buy), classified as a derivative security. On September 15, 2026, Alison Redford exercised these options to acquire 4,500 underlying shares of Gran Tierra Energy common stock.

Was the GTE insider transaction made under a Rule 10b5-1 trading plan?

No. The filing indicates that the Rule 10b5-1 checkbox is not affirmed for this Form 4, meaning the reported option exercise by Alison Redford was not identified as being made pursuant to a Rule 10b5-1 trading plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Redford Alison

(Last) (First) (Middle)

C/O GRAN TIERRA ENERGY INC.

500 CENTRE STREET S.E.

(Street)

CALGARY T2G 1A6

(City) (State) (Zip)

ALBERTA, CANADA

(Country)

2. Issuer Name and Ticker or Trading Symbol
GRAN TIERRA ENERGY INC. [ GTE ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to buy)	$10.04(1)	09/15/2026		M			4,500	08/31/2026	08/31/2026	Common Stock	4,500	$0	4,965	D

Explanation of Responses:

1. Price of security was transacted in Canadian currency and converted to U.S. currency.

	/s/ Phillip Abraham, Attorney-In Fact	09/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)