Gran Tierra Energy (GTE): Equinox-managed funds sell 218K common shares

Rhea-AI Filing Summary

Equinox Partners-managed entities reported open-market sales of 218,053 Gran Tierra Energy common shares on August 7 and 10, 2026, at per-share prices of $9.05–$9.08. The trades were made through funds and managed accounts advised by Equinox Partners Investment Management LLC, which, along with related parties, disclaims beneficial ownership beyond its pecuniary interests.

Insider Trade Summary

Net Seller: 218,053 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 218,053 shs ($1.98M)

Type	Security	Shares	Price	Value
Sale	Common Shares, par value $0.001 per share F1, F2	46,048	$9.08	$418K
Sale	Common Shares, par value $0.001 per share F1	46,091	$9.08	$419K
Sale	Common Shares, par value $0.001 per share F1, F2	11,760	$9.08	$107K
Sale	Common Shares, par value $0.001 per share F1, F2	9,806	$9.08	$89K
Sale	Common Shares, par value $0.001 per share F1, F2	42,259	$9.05	$382K
Sale	Common Shares, par value $0.001 per share F1	42,297	$9.05	$383K
Sale	Common Shares, par value $0.001 per share F1, F2	10,793	$9.05	$98K
Sale	Common Shares, par value $0.001 per share F1, F2	8,999	$9.05	$81K

Holdings After Transaction: Common Shares, par value $0.001 per share — 1,848,030 shares (Indirect, By Equinox Partners, L.P.); Common Shares, par value $0.001 per share — 1,849,906 shares (Indirect, By Managed Account); Common Shares, par value $0.001 per share — 471,955 shares (Indirect, By Kuroto Fund LP); Common Shares, par value $0.001 per share — 393,527 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: 218,053 shares Sale price (August 7, 2026): $9.05 per share Sale price (August 10, 2026): $9.08 per share +2 more

5 metrics

Total shares sold 218,053 shares Aggregate non-derivative sales reported across eight transactions

Sale price (August 7, 2026) $9.05 per share Non-derivative common share sales on August 7, 2026

Sale price (August 10, 2026) $9.08 per share Non-derivative common share sales on August 10, 2026

Number of sell transactions 8 Open-market or private sale transactions of common shares

10b5-1 plan checkbox false Filing-level indicator for Rule 10b5-1 trading arrangement

Key Terms

pecuniary interest, beneficial ownership, investment advisor, ten percent owner, +1 more

5 terms

pecuniary interest financial

"disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest"

beneficial ownership financial

"disclaims beneficial ownership of the securities reported herein except to the extent"

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.

investment advisor financial

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

ten percent owner regulatory

"Reporting persons are marked as is_ten_percent_owner in the filing data"

indirect ownership financial

"ownership_type is indirect with nature of ownership by funds or managed account"

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/11/2026 - 04:43 PM Accepted by SEC EDGAR 08/11/2026 - 04:42 PM Learn about SEC filing dates

FAQ

What insider activity did Equinox-related funds report for GTE on this Form 4?

Equinox Partners-managed entities reported selling 218,053 Gran Tierra Energy (GTE) common shares across eight open-market transactions on August 7 and 10, 2026, at prices between $9.05 and $9.08 per share.

Which entities associated with Equinox sold GTE shares and how were they held?

Sales were attributed to Equinox Partners, L.P., Kuroto Fund LP, Mason Hill Partners, LP, and a managed account. Holdings are reported as indirect, with Equinox Partners Investment Management LLC acting as investment advisor to the funds.

At what prices were the GTE shares sold by Equinox-related entities?

The reported sales of Gran Tierra Energy (GTE) shares occurred at per‑share prices of $9.05 and $9.08. Transactions on August 7, 2026 priced at $9.05, while trades on August 10, 2026 priced at $9.08 per share.

Was a Rule 10b5-1 trading plan indicated for these GTE insider sales?

No. The Form 4’s Rule 10b5-1 checkbox is not marked as affirmatively used (set to false), and the footnotes do not state that these Gran Tierra Energy (GTE) share sales were executed under a pre-arranged trading plan.

Do the reporting persons claim full beneficial ownership of the GTE shares sold?

No. The footnotes state the reporting persons disclaim beneficial ownership of the Gran Tierra Energy (GTE) securities except to the extent of their pecuniary interest, and clarify that fund entities directly own the shares.

How many GTE shares were sold indirectly through each Equinox-related fund?

Indirect sales included Equinox Partners, L.P. (46,048 and 42,259 shares), Kuroto Fund LP (11,760 and 10,793 shares), Mason Hill Partners, LP (9,806 and 8,999 shares), and a managed account (46,091 and 42,297 shares).

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)
08/07/2026

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	08/07/2026		S		42,259	D	$9.05	1,894,078	I(1)(2)	By Equinox Partners, L.P.
Common Shares, par value $0.001 per share	08/07/2026		S		42,297	D	$9.05	1,895,997	I(1)	By Managed Account
Common Shares, par value $0.001 per share	08/07/2026		S		10,793	D	$9.05	483,715	I(1)(2)	By Kuroto Fund LP
Common Shares, par value $0.001 per share	08/07/2026		S		8,999	D	$9.05	403,333	I(1)(2)	By Mason Hill Partners, LP
Common Shares, par value $0.001 per share	08/10/2026		S		46,048	D	$9.08	1,848,030	I(1)(2)	By Equinox Partners, L.P.
Common Shares, par value $0.001 per share	08/10/2026		S		46,091	D	$9.08	1,849,906	I(1)	By Managed Account
Common Shares, par value $0.001 per share	08/10/2026		S		11,760	D	$9.08	471,955	I(1)(2)	By Kuroto Fund LP
Common Shares, par value $0.001 per share	08/10/2026		S		9,806	D	$9.08	393,527	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	08/11/2026
	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.	08/11/2026
	KUROTO FUND LP By: Sean M. Fieler Title: Manager of Equinox Partners Investment Management LLC, the Investment Manager of Kuroto Fund LP	08/11/2026
	MASON HILL PARTNERS, LP By: Sean M. Fieler Title: Manager of Equinox Partners Investment Management LLC, the Investment Manager of Mason Hill Partners, LP	08/11/2026
	/s/ Sean M. Fieler SEAN M. FIELER	08/11/2026
	** 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)