Gran Tierra (GTE) CEO Gary Guidry adds shares through Employee Stock Purchase Plan

Rhea-AI Filing Summary

Gran Tierra Energy Inc. reported that President and CEO Gary Guidry acquired 540 shares of common stock on June 1, 2026. The shares were obtained through the Gran Tierra Inc. Employee Stock Purchase Plan, which allows employees to buy company stock, and were treated as a grant or award acquisition for reporting purposes.

The reported purchase price was $7.81 per share, converted from Canadian currency. Following this transaction, Guidry directly held 505,707 common shares. The filing characterizes the event as an employee stock plan transaction rather than an open-market trade.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Guidry Gary

Role President and CEO

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	540	$7.81	$4K

Holdings After Transaction: Common Stock — 505,707 shares (Direct, null)

Footnotes (1)

1. These shares were acquired on June 1, 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). Purchase price of security was transacted in Canadian currency and converted to U.S. currency.

Key Figures

Shares acquired: 540 shares Purchase price: $7.81 per share Shares owned after: 505,707 shares

3 metrics

Shares acquired 540 shares Common Stock acquired on June 1, 2026

Purchase price $7.81 per share Price converted from Canadian to U.S. currency

Shares owned after 505,707 shares Direct holdings following the ESPP acquisition

Key Terms

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

3 terms

Employee Stock Purchase Plan financial

"These shares were acquired on June 1, 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.

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Form 4 Insider Transactions: What Each Field Means →

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^*

Guidry Gary

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

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	06/01/2026		A(1)		540	A	$7.81(2)	505,707	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 June 1, 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	06/03/2026
	** 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)

FAQ

What did Gran Tierra Energy (GTE) CEO Gary Guidry report in this Form 4?

Gary Guidry reported acquiring 540 shares of Gran Tierra Energy common stock. The shares were obtained through the company’s Employee Stock Purchase Plan, classified as a grant or award, and increased his direct holdings to 505,707 shares after the transaction.

Was Gary Guidry’s Gran Tierra (GTE) share acquisition an open-market purchase?

The acquisition was not an open-market purchase. The 540 shares were acquired through Gran Tierra Inc.’s Employee Stock Purchase Plan, a company benefit program, and reported under a grant or award transaction code rather than a standard market buy.

What price did Gary Guidry effectively pay per Gran Tierra (GTE) share?

The reported purchase price was $7.81 per share in U.S. currency. A footnote explains the transaction price was originally in Canadian dollars and then converted into U.S. dollars for reporting in this Form 4.

How many Gran Tierra (GTE) shares does Gary Guidry own after this transaction?

After acquiring 540 shares through the Employee Stock Purchase Plan, Gary Guidry directly holds 505,707 shares of Gran Tierra Energy common stock. This figure reflects his post-transaction position as disclosed in the Form 4 filing.

What is the significance of Rule 16b-3 in Gary Guidry’s Gran Tierra (GTE) transaction?

The filing notes the ESPP acquisition is exempt under Rule 16b-3(d) and Rule 16b-3(c). These provisions allow certain employee benefit and compensation-related transactions to be exempt from short-swing profit rules that normally apply to insiders’ trades.