Gran Tierra COO buys 281 shares at $10.59

Gran Tierra Energy’s COO received a small ESPP share grant, bringing his direct holdings to 38,587 common shares.

Rhea-AI Filing Summary

GRAN TIERRA ENERGY INC. (GTE) reported that Chief Operating Officer Sebastien Morin acquired common shares through an employee plan. On September 17, 2026, he received 281 shares of common stock via the Gran Tierra Inc. Employee Stock Purchase Plan at a price of $10.59 per share, with the price originally transacted in Canadian dollars and converted to U.S. currency. Following this grant, Morin directly holds 38,587 common shares. No Rule 10b5-1 trading plan is reported for this transaction.

Insider Trade Summary

Grant/Award: 281 shares

Grant/Award 1 txn

Insider Morin Sebastien

Role Chief Operating Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1, F2	281	$10.59	$3K

Holdings After Transaction: Common Stock — 38,587 shares (Direct)

Footnotes (2)

1. F1. These shares were acquired on September 17, 2026 through the Gran Tierra Inc. Employee Stock Purchase Plan in a transaction that was exempt under both Rule 16b-3(d) and Rule 16b-3(c).
2. F2. Purchase price of security was transacted in Canadian currency and converted to U.S. currency.

Key Figures

Shares acquired: 281 shares Acquisition price per share: $10.59 per share Total shares held after transaction: 38,587 shares +1 more

4 metrics

Shares acquired 281 shares Common stock acquired on September 17, 2026 under the Employee Stock Purchase Plan

Acquisition price per share $10.59 per share Price for ESPP acquisition, originally paid in Canadian dollars and converted to U.S. currency

Total shares held after transaction 38,587 shares Direct holdings of COO Sebastien Morin following the September 17, 2026 acquisition

Transactions acquiring shares 1 transaction Single Form 4 transaction reported as a grant, award, or other acquisition

Key Terms

Employee Stock Purchase Plan, Rule 16b-3(d), Rule 16b-3(c)

3 terms

Employee Stock Purchase Plan financial

"acquired on September 17, 2026 through the Gran Tierra Inc. Employee Stock Purchase Plan"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

Rule 16b-3(d) regulatory

"in a transaction that was exempt under both Rule 16b-3(d) and Rule 16b-3(c)"

Rule 16b-3(d) is a narrow SEC safe-harbor that shields company insiders (officers, directors and large shareholders) from liability for short‑swing profits when their buys or sells of company stock are made under a pre-established, written plan or contract that removes the insider’s ability to time trades. For investors, this matters because it permits predictable, automated insider transactions — like scheduled sales for diversification or payroll withholding — without triggering forced disgorgement, so such planned trades are treated differently from opportunistic insider trading.

Rule 16b-3(c) regulatory

"in a transaction that was exempt under both Rule 16b-3(d) and Rule 16b-3(c)"

An SEC rule that lets corporate insiders avoid automatic "short‑swing" profit recovery when they buy or sell their company’s stock under a pre‑approved, written plan that meets specific conditions. For investors, it matters because it clarifies when insider trades are treated as routine, reducing legal uncertainty and helping distinguish trades made for ordinary compensation or pre‑planned reasons from those that might signal opportunistic or timely insider advantage.

FAQ

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

What insider transaction did GTE report for Sebastien Morin?

GTE reported that Chief Operating Officer Sebastien Morin acquired 281 shares of common stock on September 17, 2026 through the Gran Tierra Inc. Employee Stock Purchase Plan at $10.59 per share, with the purchase price converted from Canadian to U.S. currency.

How many GTE shares does COO Sebastien Morin hold after this transaction?

After the September 17, 2026 acquisition, Chief Operating Officer Sebastien Morin directly holds 38,587 shares of Gran Tierra Energy Inc. common stock, as reported in the Form 4 filing.

Was the GTE COO’s September 17, 2026 share acquisition part of a Rule 10b5-1 plan?

No. The filing indicates no Rule 10b5-1 trading plan for this transaction; the document-level checkbox for such a plan is explicitly unchecked.

At what price were the GTE shares acquired by the COO under the ESPP?

The 281 Gran Tierra Energy Inc. shares were acquired at a price of $10.59 per share, with the purchase price originally in Canadian dollars and converted to U.S. currency for reporting.

What type of transaction was reported for GTE’s COO on the Form 4?

The Form 4 reports a grant or award acquisition (code A) of 281 shares of common stock under the Gran Tierra Inc. Employee Stock Purchase Plan, categorized as a direct ownership transaction.

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

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Available on EDGAR 09/21/2026 - 04:35 PM Accepted by SEC EDGAR 09/21/2026 - 04:33 PM Learn about SEC filing dates

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^*

Morin Sebastien

(Last) (First) (Middle)

C/O GRAN TIERRA ENERGY INC.

500 CENTRE STREET SE

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/17/2026

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
Common Stock	09/17/2026		A(1)		281	A	$10.59(2)	38,587	D

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

Explanation of Responses:

1. These shares were acquired on September 17, 2026 through the Gran Tierra Inc. Employee Stock Purchase Plan in a transaction that was exempt under both Rule 16b-3(d) and Rule 16b-3(c).

2. Purchase price of security was transacted in Canadian currency and converted to U.S. currency.

	/s/ Phillip Abraham, Attorney-In Fact	09/21/2026
	** 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)