Ecopetrol CEO Juan Carlos Echeverry has called for an "extraordinary" shareholder meeting next month to fill open seats on the oil company's board of directors.
The downgrades for Bogotá and Medellín — Colombia's two biggest cities — are the same action Fitch Ratings took against the nation's sovereign rating and state-controlled Ecopetrol in July.
The state-controlled oil giant and the U'wa community that has spent decades fighting energy firms have negotiated an end to their standoff in Norte de Santander.
While Ecopetrol's long-term foreign-currency IDR was maintained at BBB, its outlook has changed to negative, and the energy giant's long-term local-currency IDR was downgraded one notch.
The expiration of a contract between Pacific Exploration and Ecopetrol cedes the Canadian firm's 43% stake in the vast Campo Rubiales field to the state-run oil company.