Gran Tierra Energy's top three insider shareholders as of September 29, 2026 are Asset Management Inc. Lm (TenPercentOwner, 4.40Mn shares), Daniel Lau (TenPercentOwner, 3.53Mn shares), Partners Investment Management Llc Equinox (TenPercentOwner, 3.47Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Asset Management Inc. Lm | TenPercentOwner | 0 | 4,403,200 | 4,403,200 | 35.7% | 05 Aug, 2026 |
| 2 | Daniel Lau | TenPercentOwner | 0 | 3,531,200 | 3,531,200 | 28.6% | 19 Dec, 2025 |
| 3 | Partners Investment Management Llc Equinox | TenPercentOwner | 0 | 3,474,582 | 3,474,582 | 28.2% | 17 Aug, 2026 |
| 4 | Gary Guidry | President And Ceo | 509,382 | 0 | 509,382 | 4.1% | 21 Sep, 2026 |
| 5 | Ryan Ellson | Chief Financial Officer | 77,363 | 0 | 77,363 | 0.6% | 14 Apr, 2026 |
| 6 | David P Smith | Director | 59,750 | 0 | 59,750 | 0.5% | 06 Jan, 2026 |
| 7 | Brooke N. Wade | Director | 58,729 | 0 | 58,729 | 0.5% | 28 Sep, 2026 |
| 8 | Jim Evans | Evp, Corporate Services | 50,343 | 0 | 50,343 | 0.4% | 21 Sep, 2026 |
| 9 | Phillip D Abraham | Evp, Legal And Land | 44,938 | 0 | 44,938 | 0.4% | 21 Sep, 2026 |
| 10 | Sebastien Morin | Chief Operating Officer | 38,587 | 0 | 38,587 | 0.3% | 21 Sep, 2026 |
| 11 | Rodger Derrick Trimble | Vp, Investor Relations | 36,047 | 0 | 36,047 | 0.3% | 03 Nov, 2023 |
| 12 | Lawrence West | Vp, Exploration | 35,000 | 0 | 35,000 | 0.3% | 28 Feb, 2023 |
| 13 | Robert G Will | Vp, Asset Management | 9,859 | 0 | 9,859 | 0.1% | 03 Nov, 2023 |
| 14 | Evan Hazell | Director | 5,500 | 0 | 5,500 | 0.0% | 06 Jan, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 24 Sep, 2026 | Brooke N. Wade | Director | Acquired M | 1,382 | $7.60 | $10.50K | 58,729 | Direct |
| 24 Sep, 2026 | Brooke N. Wade | Director | Disposed M | 1,382 | $0.00 | $0 | 4,964 | Direct |
| 17 Sep, 2026 | Jim Evans | Evp, Corporate Services | Acquired A | 127 | $10.59 | $1.34K | 50,343 | Direct |
| 17 Sep, 2026 | Phillip D Abraham | Evp, Legal And Land | Acquired A | 225 | $10.59 | $2.38K | 44,938 | Direct |
| 17 Sep, 2026 | Sebastien Morin | Chief Operating Officer | Acquired A | 281 | $10.59 | $2.98K | 38,587 | Direct |
| 17 Sep, 2026 | Gary Guidry | President And Ceo | Acquired A | 394 | $10.59 | $4.17K | 509,382 | Direct |
| 15 Sep, 2026 | Alison Redford | Director | Disposed M | 4,500 | $0.00 | $0 | 4,965 | Direct |
| 03 Sep, 2026 | Jim Evans | Evp, Corporate Services | Acquired A | 135 | $10.03 | $1.35K | 50,216 | Direct |
| 03 Sep, 2026 | Gary Guidry | President And Ceo | Acquired A | 418 | $10.03 | $4.19K | 508,988 | Direct |
| 03 Sep, 2026 | Sebastien Morin | Chief Operating Officer | Acquired A | 299 | $10.03 | $3.00K | 38,306 | Direct |
| 03 Sep, 2026 | Phillip D Abraham | Evp, Legal And Land | Acquired A | 239 | $10.03 | $2.40K | 44,713 | Direct |
| 17 Aug, 2026 | Gary Guidry | President And Ceo | Acquired A | 442 | $9.51 | $4.20K | 508,570 | Direct |
| 17 Aug, 2026 | Phillip D Abraham | Evp, Legal And Land | Acquired A | 253 | $9.51 | $2.41K | 44,474 | Direct |
| 17 Aug, 2026 | Jim Evans | Evp, Corporate Services | Acquired A | 142 | $9.51 | $1.35K | 50,081 | Direct |
| 17 Aug, 2026 | Sebastien Morin | Chief Operating Officer | Acquired A | 316 | $9.51 | $3.01K | 38,007 | Direct |
| 13 Aug, 2026 | Partners Investment Management Llc Equinox | TenPercentOwner | Disposed S | 132,412 | $9.23 | $1.22Mn | 1,548,003 | Indirect |
| 13 Aug, 2026 | Partners Investment Management Llc Equinox | TenPercentOwner | Disposed S | 132,532 | $9.23 | $1.22Mn | 1,549,604 | Indirect |
| 13 Aug, 2026 | Partners Investment Management Llc Equinox | TenPercentOwner | Disposed S | 33,818 | $9.23 | $312.14K | 395,329 | Indirect |
| 13 Aug, 2026 | Partners Investment Management Llc Equinox | TenPercentOwner | Disposed S | 28,197 | $9.23 | $260.26K | 329,636 | Indirect |
| 14 Aug, 2026 | Partners Investment Management Llc Equinox | TenPercentOwner | Disposed S | 140,929 | $9.31 | $1.31Mn | 1,407,074 | Indirect |