SEC Form 4
Gran Tierra Energy Inc. (GTE) insider trading
In the 12 months to Oct 26, 2026, 7 GTE insiders reported open-market sales of $28.0M across 15 filings; 6 insiders bought $12.2M.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $28.0M
- 15 filings · 7 insiders
- Open-market purchases
- $12.2M
- 38 filings
Who traded GTE, and when
- Purchase
- Sale
GTE daily close from Oct 27, 2025 to Oct 26, 2026, between $3.43 and $11.73, last $11.44. 15 sale and 38 purchase filings by 9 insiders, marked at their filing dates. KUROTO FUND LP, Director → 10% owner: sold $16.7M and bought $529.4K across 10 filings, first filed Nov 6, 2025, last Aug 17, 2026. MASON HILL PARTNERS LP, Director → 10% owner: sold $4.1M and bought $1.9M across 7 filings, first filed Nov 6, 2025, last Aug 17, 2026. Equinox Partners Investment Management LLC, Director → 10% owner: sold $3.9M and bought $934.4K across 8 filings, first filed Nov 6, 2025, last Aug 13, 2026. Daniel Lau, 10% owner: bought $4.7M across 10 filings, first filed Dec 19, 2025, last Aug 5, 2026. EQUINOX PARTNERS LP, Director → 10% owner: sold $2.8M and bought $1.9M across 7 filings, first filed Nov 6, 2025, last Aug 13, 2026. Christine Man, 10% owner: bought $2.2M across 8 filings, first filed Dec 22, 2025, last Jun 9, 2026. 3 others: sold $440.2K across 3 filings, first filed Dec 16, 2025, last Apr 2, 2026.
Largest mark · tap a row for others
KUROTO FUND LP · 10% owner
Filing 1 of 3 within a week · $13,668,154 total
Sale $12,965,231
1,340,189 shares at $9.67 avg
Filed Aug 10, 2026 · traded Aug 5
Close on filing date $8.95
KUROTO FUND LP · Director → 10% owner
Director → 10% owner
$16.7M sold$529.4K boughtMASON HILL PARTNERS LP · Director → 10% owner
Director → 10% owner
$4.1M sold$1.9M boughtEquinox Partners Investment Management LLC · Director → 10% owner
Director → 10% owner
$3.9M sold$934.4K boughtDaniel Lau · 10% owner
10% owner
$4.7M boughtEQUINOX PARTNERS LP · Director → 10% owner
Director → 10% owner
$2.8M sold$1.9M boughtChristine Man · 10% owner
10% owner
$2.2M bought3 others
Combined, one mark per week
$440.2K soldOpen-market trades
53 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| KUROTO FUND LP | Director → 10% owner | $16.7M | $529.4K | 10 | — | |
| MASON HILL PARTNERS LP | Director → 10% owner | $4.1M | $1.9M | 7 | — | |
| Equinox Partners Investment Management LLC | Director → 10% owner | $3.9M | $934.4K | 8 | — | |
| Daniel Lau | 10% owner | — | $4.7M | 10 | — | |
| EQUINOX PARTNERS LP | Director → 10% owner | $2.8M | $1.9M | 7 | — | |
| Christine Man | 10% owner | — | $2.2M | 8 | — | |
| Sebastien Morin | Chief Operating Officer | $252.0K | — | 1 | — | |
| Ryan Ellson | Chief Financial Officer | $163.9K | — | 1 | — | |
| Jim Evans | EVP, Corporate Services | $24.3K | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | MASON HILL PARTNERS LP 10% owner | Sale | 343,152 | $9.27 | $3.2M | Multiple accounts | |
traded | KUROTO FUND LP 10% owner | Sale | 331,797 | $9.27 | $3.1M | Multiple accounts | |
traded | MASON HILL PARTNERS LP 10% owner | Sale | 14,262 | $9.49 | $135.3K | 357,833 | |
traded | EQUINOX PARTNERS LP 10% owner | Sale | 239,912 | $9.31 | $2.2M | Multiple accounts | |
traded | Equinox Partners Investment Management LLC 10% owner | Sale | 134,010 | $9.49 | $1.3M | Multiple accounts | |
traded | KUROTO FUND LP 10% owner | Sale | 25,703 | $9.30 | $239.0K | 446,252 | |
traded | Equinox Partners Investment Management LLC 10% owner | Sale | 20,599 | $9.06 | $186.7K | Multiple accounts | |
traded | EQUINOX PARTNERS LP 10% owner | Sale | 57,851 | $9.08 | $525.3K | Multiple accounts | |
traded | KUROTO FUND LP 10% owner | Sale | 51,258 | $9.05 | $463.9K | Multiple accounts | |
traded | MASON HILL PARTNERS LP 10% owner | Sale | 88,345 | $9.07 | $800.9K | Multiple accounts | |
traded | Equinox Partners Investment Management LLC 10% owner | Sale | 259,811 | $9.48 | $2.5M | Multiple accounts | |
traded | KUROTO FUND LP 10% owner | Sale | 1,340,189 | $9.67 | $13.0M | Multiple accounts | |
traded | Daniel Lau 10% owner | Purchase | 58,000 | $6.89 | $399.5K | 4,403,200 | |
traded | Daniel Lau 10% owner | Purchase | 32,000 | $6.04 | $193.1K | 4,345,200 | |
traded | Daniel Lau 10% owner | Purchase | 51,000 | $7.22 | $368.2K | 4,313,200 | |
traded | Christine Man 10% owner | Purchase | 35,000 | $7.62 | $266.6K | 4,262,200 | |
traded | Christine Man 10% owner | Purchase | 34,000 | $8.48 | $288.2K | 4,186,200 | |
traded | Daniel Lau 10% owner | Purchase | 41,000 | $8.18 | $335.5K | 4,227,200 | |
traded | Daniel Lau 10% owner | Purchase | 18,000 | $8.30 | $149.4K | 4,140,200 | |
traded | Christine Man 10% owner | Purchase | 12,000 | $8.88 | $106.5K | 4,152,200 | |
traded | Daniel Lau 10% owner | Purchase | 97,000 | $9.19 | $891.4K | 4,122,200 | |
traded | Sebastien Morin Chief Operating Officer | Sale | 26,750 | $9.42 | $252.0K | 33,034 | |
traded | Ryan Ellson Chief Financial Officer | Sale | 20,800 | $7.88 | $163.9K | 80,363 | |
traded | Christine Man 10% owner | Purchase | 20,000 | $6.52 | $130.4K | 4,001,200 | |
traded | Daniel Lau 10% owner | Purchase | 74,000 | $6.41 | $474.2K | 4,025,200 | |
traded | Christine Man 10% owner | Purchase | 30,000 | $5.33 | $160.0K | 207,000 | |
traded | Daniel Lau 10% owner | Purchase | 32,000 | $5.33 | $170.5K | 177,000 | |
traded | Christine Man 10% owner | Purchase | 80,000 | $3.87 | $309.7K | 3,931,200 | |
traded | Christine Man 10% owner | Purchase | 100,000 | $4.04 | $404.1K | 3,771,200 | |
traded | Daniel Lau 10% owner | Purchase | 80,000 | $4.00 | $320.3K | 3,851,200 | |
traded | Christine Man 10% owner | Purchase | 140,000 | $3.87 | $542.3K | 3,671,200 | |
traded | Daniel Lau 10% owner | Purchase | 360,000 | $3.95 | $1.4M | 3,531,200 | |
traded | Jim Evans EVP, Corporate Services | Sale | 6,140 | $3.96 | $24.3K | Multiple accounts | |
traded | EQUINOX PARTNERS LP Director | Purchase | 3,075 | $4.36 | $13.4K | 2,586,854 | |
traded | KUROTO FUND LP Director | Purchase | 1,025 | $4.36 | $4.5K | 2,584,304 | |
traded | EQUINOX PARTNERS LP Director | Purchase | 37,500 | $4.35 | $163.1K | 2,503,173 | |
traded | Equinox Partners Investment Management LLC Director | Purchase | 40,402 | $4.29 | $173.3K | Multiple accounts | |
traded | MASON HILL PARTNERS LP Director | Purchase | 67,073 | $4.24 | $284.5K | Multiple accounts | |
traded | KUROTO FUND LP Director | Purchase | 12,500 | $4.35 | $54.4K | 2,556,410 | |
traded | Equinox Partners Investment Management LLC Director | Purchase | 22,800 | $4.36 | $99.4K | 2,465,673 | |
traded | EQUINOX PARTNERS LP Director | Purchase | 16,545 | $4.29 | $71.0K | 2,543,910 | |
traded | KUROTO FUND LP Director | Purchase | 26,835 | $4.23 | $113.5K | 2,442,873 | |
traded | EQUINOX PARTNERS LP Director | Purchase | 96,022 | $4.26 | $409.4K | Multiple accounts | |
traded | KUROTO FUND LP Director | Purchase | 23,160 | $4.25 | $98.4K | Multiple accounts | |
traded | Equinox Partners Investment Management LLC Director | Purchase | 17,185 | $4.32 | $74.2K | 550,317 | |
traded | MASON HILL PARTNERS LP Director | Purchase | 90,071 | $4.26 | $383.9K | Multiple accounts | |
traded | MASON HILL PARTNERS LP Director | Purchase | 109,869 | $4.28 | $470.0K | Multiple accounts | |
traded | Equinox Partners Investment Management LLC Director | Purchase | 53,687 | $4.21 | $226.0K | Multiple accounts | |
traded | KUROTO FUND LP Director | Purchase | 18,034 | $4.32 | $78.0K | Multiple accounts | |
traded | MASON HILL PARTNERS LP Director | Purchase | 202,636 | $3.99 | $807.6K | Multiple accounts | |
traded | Equinox Partners Investment Management LLC Director | Purchase | 88,800 | $4.07 | $361.4K | Multiple accounts | |
traded | EQUINOX PARTNERS LP Director | Purchase | 312,164 | $3.85 | $1.2M | Multiple accounts | |
traded | KUROTO FUND LP Director | Purchase | 44,400 | $4.07 | $180.7K | 487,735 |
GET /stocks/filings/vX/form-4?tickers=GTE&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"GTE"
],
"issuer_cik": "0001273441",
"owner_cik": "0001421771",
"accession_number": "0001013594-26-000927",
"form_type": "4",
"filing_date": "2026-08-17",
"period_of_report": "2026-08-13",
"issuer_name": "GRAN TIERRA ENERGY INC.",
"issuer_trading_symbol": "GTE",
"owner_name": "MASON HILL PARTNERS LP",
"is_director": false,
"is_officer": false,
"is_ten_percent_owner": true,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Shares, par value $0.001 per share",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-13",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 132412,
"transaction_price_per_share": 9.23,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 1548003,
"transaction_value": 1222162.76,
"not_subject_to_section_16": true,
"direct_or_indirect": "I",
"nature_of_ownership": "By Equinox Partners, L.P.",
"footnotes": [
{
"id": "F1",
"description": "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."
},
{
"id": "F2",
"description": "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\")."
},
{
"tickers": [
"GTE"
],
"issuer_cik": "0001273441",
"owner_cik": "0001080716",
"accession_number": "0001013594-26-000927",
"form_type": "4",
"filing_date": "2026-08-17",
"period_of_report": "2026-08-13",
"issuer_name": "GRAN TIERRA ENERGY INC.",
"issuer_trading_symbol": "GTE",
"owner_name": "KUROTO FUND LP",
"is_director": false,
"is_officer": false,
"is_ten_percent_owner": true,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Shares, par value $0.001 per share",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-14",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 30011,
"transaction_price_per_share": 9.31,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 299625,
"transaction_value": 279402.41000000003,
"not_subject_to_section_16": true,
"direct_or_indirect": "I",
"nature_of_ownership": "By Mason Hill Partners, LP",
"footnotes": [
{
"id": "F1",
"description": "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."
},
{
"id": "F2",
"description": "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\")."
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 116 records
- Option exercises12 records
- Grants and awards96 records
- Other8 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Role
- The title on each filing. Someone whose title changed shows more than one.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
- Counted once
- When several owners (a fund and its partners, say) report the same trade, it's counted once. Corrected filings replace the originals.
Frequently asked questions
Has Gran Tierra Energy Inc.'s CEO sold stock?
No. Gary Guidry (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is GTE’s insider data?
These are GTE Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for GTE every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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