OREANDA-NEWS. Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC; TSX: ECP) informs, by means of a notice of public offer, its first local public bond issuance and placement in Colombia in an aggregate principal amount of six hundred billion pesos (COPUSD 600,000,000,000) (the “Bonds”), under its COPUSD 3 Trillion Program of Issuance and Placements of Bonds and Commercial Paper (the “Program”). The Bonds principal terms are described below.

Total amount: nine hundred billion pesos (COPUSD 900,000,000,000).

Amount of first tranche: Six hundred billion pesos (COPUSD 600,000,000,000), with an over-allotment option of up to three hundred billion pesos (COPUSD 300,000,000,000).

Issue date: August 27, 2013.

Use of proceeds: Financing of the Company's Investment Plan.

Minimum denomination: Fifty million pesos (COPUSD 50,000,000).

Subseries and maturity date: The following sets forth the maturity dates of each subseries of Bonds:

Series C: Peso-denominated variable CPI rate bonds

Maturity date

5 years

10 years

15 years

30 years

Subseries

C5

C10

C15

C30

Amortization: At maturity.

Yield: payable semi-annually

This announcement is not an offer for sale of or a solicitation of any offer to buy any securities of Ecopetrol in any transaction. If and when issued, the securities will not be registered under the US Securities Act of 1933, as amended (the “Securities Act”). The securities may not be offered or sold in the United States absent registration with the US Securities and Exchange Commission or pursuant to an applicable exemption from the registration requirements of the Securities Act and applicable securities laws.