Initial Statement of Beneficial Ownership

This filing is an Initial Statement of Beneficial Ownership (Form 3) for Jose Camilo Manzur Jattin, a director at ECOPETROL S.A. The filing reports that following a transaction, Mr. Jattin directly owns 5000 shares of ECOPETROL S.A. common stock. The reporting date for this information is September 15, 2026, with the signature date on September 25, 2026. The owner's address is provided as being in Bogota, Colombia.