Gran Tierra holder funds sell 1.6M common shares

Gran Tierra Energy Inc. insider funds associated with Equinox Partners Investment Management LLC reported sales of 1,600,000 common shares of the company.

Rhea-AI Filing Summary

Gran Tierra Energy Inc. insider funds associated with Equinox Partners Investment Management LLC reported sales of 1,600,000 common shares of the company. The indirect dispositions were made on August 5–6, 2026 at per-share prices of $10.60 and $9.20 by Equinox Partners, L.P., Kuroto Fund LP, Mason Hill Partners, LP, and a managed account. The reporting persons state they disclaim beneficial ownership beyond their pecuniary interest, with Equinox Partners Investment Management LLC acting as investment advisor to the funds and its president potentially deemed a beneficial owner through these relationships.

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 ($15.43M)

Type	Security	Shares	Price	Value
Sale	Common Shares, par value $0.001 per share F1, F2	442,931	$9.20	$4.07M
Sale	Common Shares, par value $0.001 per share F1	443,335	$9.20	$4.08M
Sale	Common Shares, par value $0.001 per share F1, F2	113,123	$9.20	$1.04M
Sale	Common Shares, par value $0.001 per share F1, F2	94,323	$9.20	$868K
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: 1,600,000 shares Sale price August 5, 2026: $10.60 per share Sale price August 6, 2026: $9.20 per share +2 more

5 metrics

Total shares sold 1,600,000 shares Aggregate common shares sold indirectly by reporting persons per transaction summary

Sale price August 5, 2026 $10.60 per share Open-market or private sales of common shares on 2026-08-05

Sale price August 6, 2026 $9.20 per share Open-market or private sales of common shares on 2026-08-06

Number of sale transactions 8 transactions Non-derivative common share sales reported across two trading days

Ten percent owners 4 reporting persons Equinox Partners Investment Management LLC and three funds reported as ten percent owners

Key Terms

beneficial ownership, pecuniary interest, ten percent owner, managed account, +1 more

5 terms

beneficial ownership regulatory

"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.

pecuniary interest financial

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

ten percent owner regulatory

"each listed reporting person is indicated as a ten percent owner"

managed account financial

"nature_of_ownership is reported as By Managed Account"

indirect ownership regulatory

"ownership_type is reported as indirect for each transaction"

FAQ

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

What did Gran Tierra Energy (GTE) insiders report in this Form 4/A?

Insider funds associated with Equinox Partners reported selling 1,600,000 common shares of Gran Tierra Energy on August 5–6, 2026 in multiple open-market transactions at prices of $9.20 and $10.60 per share, all reported as indirect dispositions.

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

The sales were executed by Equinox Partners, L.P., Kuroto Fund LP, Mason Hill Partners, LP and a managed account. Equinox Partners Investment Management LLC acts as investment advisor to these funds, and the transactions are reported as indirect ownership positions.

At what prices were Gran Tierra Energy (GTE) shares sold in this filing?

The reported sales occurred at per-share prices of $10.60 on August 5, 2026 and $9.20 on August 6, 2026. All transactions involved common shares with a par value of $0.001 and were characterized as open-market or private sales.

How many Gran Tierra Energy (GTE) shares were sold by date in this Form 4/A?

On August 5, 2026, insider funds sold common share blocks including 205,036, 205,225, 52,365, and 43,662 shares at $10.60. On August 6, 2026, they sold blocks of 442,931, 443,335, 113,123, and 94,323 shares at $9.20.

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

No. The reporting persons expressly disclaim beneficial ownership of these securities except to the extent of their pecuniary interest. The advisor and its president may be deemed beneficial owners through their relationships with the funds holding the shares.

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

The Form 4/A indicates the Rule 10b5-1 checkbox is not marked as affirming a plan, and the footnotes do not describe a trading plan. The transactions are therefore reported without being identified as executed under a pre-arranged Rule 10b5-1 plan.

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

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Accepted by SEC EDGAR 08/10/2026 - 05:39 PM EDT 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)
08/07/2026

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	$9.2	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	$9.2	1,938,294	I(1)	By Managed Account
Common Shares, par value $0.001 per share	08/06/2026		S		113,123	D	$9.2	494,508	I(1)(2)	By Kuroto Fund LP
Common Shares, par value $0.001 per share	08/06/2026		S		94,323	D	$9.2	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	08/10/2026
	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.	08/10/2026
	KUROTO FUND LP By: Sean M. Fieler Title: Manager of Equinox Partners Investment Management LLC, the Investment Manager of Kuroto Fund LP	08/10/2026
	MASON HILL PARTNERS, LP By: Sean M. Fieler Title: Manager of Equinox Partners Investment Management LLC, the Investment Manager of Mason Hill Partners, LP	08/10/2026
	/s/ Sean M. Fieler SEAN M. FIELER	08/10/2026
	** 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)