Insider Ownership Filing for ECOPETROL S.A.

This filing reports on the insider ownership of ECOPETROL S.A. by Joaquin Camilo Gutierrez Caballero, the Chief Executive Officer. The report indicates that Mr. Caballero does not own any securities, as specified by "noSecuritiesOwned": "1". The filing was made on October 8, 2026, with the period of report being September 28, 2026. The owner