Mr. Neil Woodyer reports

ENDEAVOUR MINING Q1 2015 AISC/OZ OF $946, PROFIT OF $13M AND $20M DEBT PAYMENT IN APRIL

Endeavour Mining Corp. had first-quarter 2015 gold production of 123,744 ounces, resulting in an all-in sustaining margin of $33.9-million. The AISC (all-in sustaining costs) of $946 per ounce during first quarter 2015 was the third consecutive quarter below $1,000 per ounce. With an average realized gold price of $1,218 per ounce, the AISC margin was 22 per cent. Endeavour's operations continue to perform well and are positioned to deliver full-year production of 475,000 to 500,000 ounces at an AISC per ounce range of $930 to $980 (all amounts in U.S. dollars unless otherwise indicated).

First-quarter 2015 financial and operating highlights:

• Gold production of 123,744 ounces and sales of 124,850 ounces at a realized gold price of $1,218 per ounce;
• Cash cost per ounce sold of $732;
• Operating earnings before interest, taxes, depreciation and amortization of $44.9-million;
• AISC per ounce sold of $946;
• AISC margin of $33.9-million;
• At the Tabakoto mine, the AISC per ounce reduced to $1,127, a reduction of $246 as compared with fourth quarter 2014, with Tabakoto generating a positive AISC margin of $2.9-million in the current quarter. Progressive improvements are scheduled through 2015;
• Sustained group-level AISC per ounce below $1,000 for three consecutive quarters (third quarter and fourth quarter 2014, first quarter 2015);
• Non-sustaining capital investments decreased to $8.3-million, mostly related to completion of 2014 projects;
• Free cash flow, before exceptional items, of $9.3-million;
• After-tax net earnings of $13-million;
• Endeavour ended first quarter 2015 in a strong financial position with $56.4-million in cash;
• Based on the strong results in first quarter 2015 and continued performance in April, 2015, a $20-million principal payment was made on April 30 to reduce the drawn amount on the revolving credit facility to $280-million.

Neil Woodyer, chief executive officer, stated: "For 2015 we have five key objectives: (1) produce 475,000 to 500,000 ounces; (2) maintain AISC per ounce in the mid-$900s; (3) to be profitable; (4) use free cash flow to reduce debt; (5) extend mine life through exploration success.

"During the first quarter of 2015, we made strong progress on all five objectives. We are on track with objectives 1, 2 and 3 with first-quarter production of 124,000 ounces at an AISC per ounce of $946, which resulted in a profitable quarter with net income of $13-million.

"For objective 4, we have successfully renewed and extended our revolving credit facility to five years with a maturity date in March, 2020. This enhances our financial flexibility. Yesterday, we made a $20-million payment to reduce the drawn balance on the facility to $280-million. It remains our objective to continue reducing our outstanding debt from free cash flow during 2015; and, with respect to objective 5, our exploration teams have launched our new 2015 programs."

       FIRST-QUARTER 2015 MARGIN GENERATION AND ALL-IN SUSTAINING COST
                                                                   
                                            Three months ended March 31, 2015
                                    U.S.$ M     In gold oz   AISC $ per ounce

Gold revenue                         $152.1        124,850
Less royalties                          7.2          5,945                $58
Less cash costs for ounces sold        91.4         75,007                732
Mine cash margin                       53.5         43,898
Less corporate G&A                      4.0          3,284                 32
Less sustaining capital                14.0         11,456                111
Less sustaining exploration             1.6          1,314                 13
All-in sustaining margin/cost         $33.9         27,844               $946

(1) Numbers may not add due to rounding.

First-quarter 2015 adjusted earnings

Net earnings from operations (attributable to Endeavour shareholders) have been adjusted for the impact of realized and unrealized gain and loss associated to the gold price protection programs, gain and loss on financial instruments, imputed interest on the promissory note, gains and losses on foreign currency, stock-based payments, deferred income taxes, and other non-operating and exceptional items.

Financial statements and related management discussion and analysis will be available on SEDAR, the Australian Securities Exchange website, OTC Markets website and in the investor relations section of Endeavour's website.

Conference call details

Management will host a conference call to discuss the first-quarter 2015 results on May 4, 2015, as detailed below. Presenting on the call will be Mr. Woodyer, chief executive officer, Attie Roux, chief operating officer, and Ota Hally, chief financial officer.

Analysts and interested investors are invited to participate using the dial-in numbers below.

International:  1-201-689-8040

North American toll-free:  1-877-407-8133

Australian toll-free:  1-800-687-004

The conference call can also be accessed through the company's website.

The conference call will be held and webcast on Monday, May 4, 2015, at:

• 7 a.m. in Vancouver;
• 10 a.m. in Toronto and New York;
• 3 p.m. in London;
• 10 p.m. in Hong Kong and Perth.

The call will be archived for later playback on Endeavour's website until May 4, 2016.

Qualified persons

Adriaan "Attie" Roux, PrSciNat, Endeavour's chief operating officer, is a qualified person under National Instrument 43-101, and has reviewed and approved the technical information related to mining operations in this news release.

We seek Safe Harbor.