# EDGAR Filing Document

**Accession Number:** 0000933897
**File Stem:** 0001013594-25-000750
**Filing Date:** 2025-6
**Character Count:** 13182
**Document Hash:** 07969052e2d2fffeda37bfc71980ed3e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001013594-25-000750.hdr.sgml**: 20250616

**ACCESSION NUMBER**: 0001013594-25-000750

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250612

**FILED AS OF DATE**: 20250616

**DATE AS OF CHANGE**: 20250616

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** EQUINOX PARTNERS LP
- **CENTRAL INDEX KEY:** 0000933897

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34018
- **FILM NUMBER:** 251050338

**BUSINESS ADDRESS:**
- **STREET 1:** 301 TRESSER BLVD.
- **STREET 2:** 13TH FLOOR
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901
- **BUSINESS PHONE:** 203-516-2270

**MAIL ADDRESS:**
- **STREET 1:** 301 TRESSER BLVD.
- **STREET 2:** 13TH FLOOR
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Equinox Partners Investment Management LLC
- **CENTRAL INDEX KEY:** 0000938552

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34018
- **FILM NUMBER:** 251050339

**BUSINESS ADDRESS:**
- **STREET 1:** THREE STAMFORD PLAZA
- **STREET 2:** 301 TRESSER BLVD, 13TH FL
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901
- **BUSINESS PHONE:** 212-832-1290

**MAIL ADDRESS:**
- **STREET 1:** THREE STAMFORD PLAZA
- **STREET 2:** 301 TRESSER BLVD, 13TH FL
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901

**FORMER NAME:**
- **FORMER CONFORMED NAME:** Equinox Partners Investment Management
- **DATE OF NAME CHANGE:** 20201005

**FORMER NAME:**
- **FORMER CONFORMED NAME:** MASON HILL ADVISORS LLC
- **DATE OF NAME CHANGE:** 20120913

**FORMER NAME:**
- **FORMER CONFORMED NAME:** MASON HILL ASSET MANAGEMENT INCET AL
- **DATE OF NAME CHANGE:** 19950221
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** MASON HILL PARTNERS LP
- **CENTRAL INDEX KEY:** 0001421771

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34018
- **FILM NUMBER:** 251050336

**BUSINESS ADDRESS:**
- **STREET 1:** 301 TRESSER BLVD.
- **STREET 2:** 13TH FLOOR
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901
- **BUSINESS PHONE:** 203-516-2270

**MAIL ADDRESS:**
- **STREET 1:** 301 TRESSER BLVD.
- **STREET 2:** 13TH FLOOR
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** KUROTO FUND LP
- **CENTRAL INDEX KEY:** 0001080716

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34018
- **FILM NUMBER:** 251050337

**BUSINESS ADDRESS:**
- **STREET 1:** C/O EQUINOX PARTNERS INVESTMENT MGMT LLC
- **STREET 2:** 301 TRESSER BLVD., 13TH FLOOR
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901
- **BUSINESS PHONE:** 2035162270

**MAIL ADDRESS:**
- **STREET 1:** C/O EQUINOX PARTNERS INVESTMENT MGMT LLC
- **STREET 2:** 301 TRESSER BLVD., 13TH FLOOR
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901

**FORMER NAME:**
- **FORMER CONFORMED NAME:** KUROTO FUND L P
- **DATE OF NAME CHANGE:** 19990225
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** GRAN TIERRA ENERGY INC.
- **CENTRAL INDEX KEY:** 0001273441
- **STANDARD INDUSTRIAL CLASSIFICATION:** CRUDE PETROLEUM & NATURAL GAS [1311]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 500 CENTRE STREET SE
- **CITY:** CALGARY
- **STATE:** A0
- **ZIP:** T2G 1A6
- **BUSINESS PHONE:** (403) 265-3221

**MAIL ADDRESS:**
- **STREET 1:** 500 CENTRE STREET SE
- **CITY:** CALGARY
- **STATE:** A0
- **ZIP:** T2G 1A6

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GRAN TIERRA ENERGY, INC.
- **DATE OF NAME CHANGE:** 20051130

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GOLDSTRIKE INC
- **DATE OF NAME CHANGE:** 20040113

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GOLKSTRIKE INC
- **DATE OF NAME CHANGE:** 20031216

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>Equinox Partners Investment Management LLC<br><sub>(Last) (First) (Middle)</sub><br>THREE STAMFORD PLAZA<br>301 TRESSER BLVD, 13TH FL<br><sub>(Street)</sub><br>STAMFORD, CT 06901<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-06-12 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>GRAN TIERRA ENERGY INC. [ GTE ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>EQUINOX PARTNERS LP<br><sub>(Last) (First) (Middle)</sub><br>301 TRESSER BLVD.<br>13TH FLOOR<br><sub>(Street)</sub><br>STAMFORD, CT 06901<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-06-12 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>GRAN TIERRA ENERGY INC. [ GTE ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>KUROTO FUND LP<br><sub>(Last) (First) (Middle)</sub><br>THREE STAMFORD PLAZA<br>301 TRESSER BLVD., 13TH FLOOR<br><sub>(Street)</sub><br>STAMFORD, CT 06901<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-06-12 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>GRAN TIERRA ENERGY INC. [ GTE ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>MASON HILL PARTNERS LP<br><sub>(Last) (First) (Middle)</sub><br>301 TRESSER BLVD.<br>13TH FLOOR<br><sub>(Street)</sub><br>STAMFORD, CT 06901<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-06-12 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>GRAN TIERRA ENERGY INC. [ GTE ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Shares, par value $0.001 per share | 2025-06-12 |  | P |  | 4006 | A | $5.01 | 2163682 | I<sup>(1)(2)</sup> | By Equinox Partners, L.P. |
| Common Shares, par value $0.001 per share | 2025-06-12 |  | P |  | 4006 | A | $5.01 | 2051427 | I<sup>(1)</sup> | By Managed Account |
| Common Shares, par value $0.001 per share |  |  |  |  |  |  |  | 538700 | I<sup>(1)(2)</sup> | By Kuroto Fund LP |
| Common Shares, par value $0.001 per share |  |  |  |  |  |  |  | 343879 | I<sup>(1)(2)</sup> | By Mason Hill Partners, LP |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(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").

**Signature:** EQUINOX PARTNERS INVESTMENT MANAGEMENT LLC/s/ Sean M. Fieler
Name: Sean M. Fieler, Title: Manager  
**Date:** 2025-06-16

**Signature:** EQUINOX PARTNERS, L.P./s/ Sean M. Fieler
Name: Sean M. Fieler, Title: Manager of Equinox Partners Investment Management LLC, the Investment Manager of Equinox Partners, L.P.  
**Date:** 2025-06-16

**Signature:** KUROTO FUND LP/s/ Sean M. Fieler
Name: Sean M. Fieler, Title: Manager of Equinox Partners Investment Management LLC, the Investment Manager of Kuroto Fund LP  
**Date:** 2025-06-16

**Signature:** MASON HILL PARTNERS, LP/s/ Sean M. Fieler
Name: Sean M. Fieler, Title: Manager of Equinox Partners Investment Management LLC, the Investment Manager of Mason Hill Partners, LP  
**Date:** 2025-06-16

**Signature:** /s/ Sean M. Fieler
Sean M. Fieler  
**Date:** 2025-06-16

### Remarks:

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.**