Gran Tierra stakeholder group sells 1,600,000 shares

Gran Tierra Energy Inc. reported that investment entities associated with Equinox Partners sold an aggregate of 1,600,000 common shares in open‑market or private transactions on August 5–6, 2026 at prices of $10.6000 and $9.1600 per share.

Rhea-AI Filing Summary

Gran Tierra Energy Inc. reported that investment entities associated with Equinox Partners sold an aggregate of 1,600,000 common shares in open‑market or private transactions on August 5–6, 2026 at prices of $10.6000 and $9.1600 per share. The sales were made indirectly through Equinox Partners, L.P., Kuroto Fund LP, Mason Hill Partners, LP and managed accounts. The reporting parties disclaim beneficial ownership beyond their pecuniary interest, and the trades were not reported as pursuant to a Rule 10b5‑1 plan.

Insider Trade Summary

Net Seller: 1,600,000 shares

Net Sell 8 txns

Insider Equinox Partners Investment Management LLC, EQUINOX PARTNERS LP, KUROTO FUND LP, MASON HILL PARTNERS LP

Role 10% Owner | 10% Owner | 10% Owner | 10% Owner

Sold 1,600,000 shs ($15.39M)

Type	Security	Shares	Price	Value
Sale	Common Shares, par value $0.001 per share F1, F2	442,931	$9.16	$4.06M
Sale	Common Shares, par value $0.001 per share F1	443,335	$9.16	$4.06M
Sale	Common Shares, par value $0.001 per share F1, F2	113,123	$9.16	$1.04M
Sale	Common Shares, par value $0.001 per share F1, F2	94,323	$9.16	$864K
Sale	Common Shares, par value $0.001 per share F1, F2	205,036	$10.60	$2.17M
Sale	Common Shares, par value $0.001 per share F1	205,225	$10.60	$2.18M
Sale	Common Shares, par value $0.001 per share F1, F2	52,365	$10.60	$555K
Sale	Common Shares, par value $0.001 per share F1, F2	43,662	$10.60	$463K

Holdings After Transaction: Common Shares, par value $0.001 per share — 1,936,337 shares (Indirect, By Equinox Partners, L.P.); Common Shares, par value $0.001 per share — 1,938,294 shares (Indirect, By Managed Account); Common Shares, par value $0.001 per share — 494,508 shares (Indirect, By Kuroto Fund LP); Common Shares, par value $0.001 per share — 412,332 shares (Indirect, By Mason Hill Partners, LP)

Footnotes (2)

1. F1. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein. The filing of this Form 4 shall not be deemed an admission that the Reporting Persons are, for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, the beneficial owners of any securities of the Issuer he or it does not directly own.
2. F2. EPIM is the investment advisor to Equinox Partners, L.P., Kuroto Fund LP, and Mason Hill Partners, LP (collectively, the "Funds"). Mr. Fieler is the president of EPIM. By virtue of these relationships, each of EPIM and Mr. Fieler may be deemed to beneficially own the securities owned directly by the Funds.

Key Figures

Total shares sold: 1600000 shares Number of sale transactions: 8 transactions Sale price per share on 2026-08-05: 10.6000 per share +2 more

5 metrics

Total shares sold 1600000 shares Aggregate common shares sold across all reported transactions

Number of sale transactions 8 transactions Non-derivative common share sales reported in this Form 4

Sale price per share on 2026-08-05 10.6000 per share Common share sale price on August 5, 2026

Sale price per share on 2026-08-06 9.1600 per share Common share sale price on August 6, 2026

Net buy/sell shares -1600000 shares Net share change across all reported transactions

Key Terms

beneficial ownership, pecuniary interest, investment advisor, Section 13(d) of the Securities Exchange Act of 1934

4 terms

beneficial ownership regulatory

"Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

pecuniary interest financial

"except to the extent of his or its pecuniary interest therein"

investment advisor financial

"EPIM is the investment advisor to Equinox Partners, L.P., Kuroto Fund LP"

An investment advisor is a person or firm that provides personalized guidance on buying, selling and managing investments and often oversees client portfolios for a fee. For investors this matters because the advisor shapes risk, costs and long-term returns, and is typically required by law to act in the client’s best interests — think of them as a financial coach or GPS that helps navigate choices and avoid costly detours.

Section 13(d) of the Securities Exchange Act of 1934 regulatory

"for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended"

Section 13(d) of the Securities Exchange Act of 1934 is a U.S. rule that requires anyone who buys more than 5% of a public company’s shares to publicly disclose who they are, how many shares they own, and their intentions toward the company. For investors, this is like a neighborhood alert when someone acquires a large stake in a building: it reveals potential changes in control or strategy that could affect the stock’s price, governance, or future direction.

FAQ

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

What insider share sales did Gran Tierra Energy (GTE) report in this Form 4?

The Form 4 shows investment entities tied to Equinox Partners sold 1,600,000 common shares of Gran Tierra Energy on August 5–6, 2026 at $10.6000 and $9.1600 per share in open‑market or private transactions.

How many Gran Tierra Energy (GTE) shares were sold and at what prices?

Across eight transactions, the reporting entities sold 1,600,000 common shares of Gran Tierra Energy at prices of $10.6000 per share on August 5, 2026 and $9.1600 per share on August 6, 2026.

Who executed the recent Gran Tierra Energy (GTE) share sales?

The sales were made indirectly by Equinox Partners, L.P., Kuroto Fund LP, Mason Hill Partners, LP and managed accounts advised by Equinox Partners Investment Management LLC, which filed jointly with related reporting persons as more‑than‑ten‑percent owners.

Were the Gran Tierra Energy (GTE) insider sales under a Rule 10b5-1 trading plan?

No. The Rule 10b5-1 checkbox in the Form 4 is not checked, and there is no footnote indicating a pre‑arranged trading plan, so the reported sales are not described as executed under Rule 10b5‑1.

Do the Gran Tierra Energy (GTE) reporting persons claim full beneficial ownership of the sold shares?

No. The footnotes state the reporting persons disclaim beneficial ownership of the securities except to the extent of their pecuniary interest, and that EPIM and Mr. Fieler may be deemed to beneficially own securities held directly by the funds.

How are the Gran Tierra Energy (GTE) shares held for these transactions?

All reported sales involve indirect ownership: shares are held by Equinox Partners, L.P., Kuroto Fund LP, Mason Hill Partners, LP and a managed account, with Equinox Partners Investment Management LLC serving as investment advisor to the funds.

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

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Available on EDGAR 08/07/2026 - 04:42 PM Accepted by SEC EDGAR 08/07/2026 - 04:41 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^*

Equinox Partners Investment Management LLC

(Last) (First) (Middle)

THREE STAMFORD PLAZA

301 TRESSER BLVD, 13TH FL.

(Street)

STAMFORD CONNECTICUT 06901

(City) (State) (Zip)

UNITED STATES

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/05/2026

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

	Form filed by One Reporting Person
X	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 Shares, par value $0.001 per share	08/05/2026		S		205,036	D	$10.6	2,379,268	I(1)(2)	By Equinox Partners, L.P.
Common Shares, par value $0.001 per share	08/05/2026		S		205,225	D	$10.6	2,381,629	I(1)	By Managed Account
Common Shares, par value $0.001 per share	08/05/2026		S		52,365	D	$10.6	607,631	I(1)(2)	By Kuroto Fund LP
Common Shares, par value $0.001 per share	08/05/2026		S		43,662	D	$10.6	506,655	I(1)(2)	By Mason Hill Partners, LP
Common Shares, par value $0.001 per share	08/06/2026		S		442,931	D	$9.16	1,936,337	I(1)(2)	By Equinox Partners, L.P.
Common Shares, par value $0.001 per share	08/06/2026		S		443,335	D	$9.16	1,938,294	I(1)	By Managed Account
Common Shares, par value $0.001 per share	08/06/2026		S		113,123	D	$9.16	494,508	I(1)(2)	By Kuroto Fund LP
Common Shares, par value $0.001 per share	08/06/2026		S		94,323	D	$9.16	412,332	I(1)(2)	By Mason Hill Partners, LP

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

1. Name and Address of Reporting Person^*

Equinox Partners Investment Management LLC

(Last) (First) (Middle)

THREE STAMFORD PLAZA

301 TRESSER BLVD, 13TH FL.

(Street)

STAMFORD CONNECTICUT 06901

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

EQUINOX PARTNERS LP

(Last) (First) (Middle)

301 TRESSER BLVD.

13TH FLOOR

(Street)

STAMFORD CONNECTICUT 06901

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

KUROTO FUND LP

(Last) (First) (Middle)

THREE STAMFORD PLAZA

301 TRESSER BLVD, 13TH FL.

(Street)

STAMFORD CONNECTICUT 06901

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

MASON HILL PARTNERS LP

(Last) (First) (Middle)

301 TRESSER BLVD.

13TH FLOOR

(Street)

STAMFORD CONNECTICUT 06901

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

Explanation of Responses:

1. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein. The filing of this Form 4 shall not be deemed an admission that the Reporting Persons are, for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, the beneficial owners of any securities of the Issuer he or it does not directly own.

2. EPIM is the investment advisor to Equinox Partners, L.P., Kuroto Fund LP, and Mason Hill Partners, LP (collectively, the "Funds"). Mr. Fieler is the president of EPIM. By virtue of these relationships, each of EPIM and Mr. Fieler may be deemed to beneficially own the securities owned directly by the Funds.

Remarks:

This Form 4 is filed jointly by Equinox Partners Investment Management LLC ("EPIM"), Sean M. Fieler, Equinox Partners, L.P., Kuroto Fund LP, and Mason Hill Partners, LP (collectively, the "Reporting Persons").

	EQUINOX PARTNERS INVESTMENT MANAGEMENT LLC By: /s/ Sean M. Fieler Title: Manager	08/07/2026
	EQUINOX PARTNERS, L.P. By: /s/ Sean M. Fieler Title: Manager of Equinox Partners Investment Management LLC, the Investment Manager of Equinox Partners, L.P.	08/07/2026
	KUROTO FUND LP By: /s/ Sean M. Fieler Title: Manager of Equinox Partners Investment Management LLC, the Investment Manager of Kuroto Fund LP	08/07/2026
	MASON HILL PARTNERS, LP By: /s/ Sean M. Fieler Title: Manager of Equinox Partners Investment Management LLC, the Investment Manager of Mason Hill Partners, LP	08/07/2026
	/s/ Sean M. Fieler	08/07/2026
	** 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)