SCHEDULE 13G/A

Gran Tierra Energy Inc

Common Shares, par value $0.001 per share (the "Common Shares") · CUSIP: 38500T200

Event date: 2025-03-31

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Equinox Partners Investment Management LLC

  Shares: 4,759,296 · Class: 13.5%

• Equinox Partners, L.P.

  Shares: 1,994,486 · Class: 5.6%

• Kuroto Fund LP

  Shares: 538,700 · Class: 1.5%

• Mason Hill Partners, LP

  Shares: 343,879 · Class: 1%

• Sean M. Fieler

  Shares: 4,759,296 · Class: 13.5%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.