BVN Compania De Minas Buenaventura SA

Financial Highlights (in millions of US$, except EPS figures) :

Operating Revenues

During 1Q17, net sales were US$272.8 million, a 24% increase compared to the US$220.6 million reported in 1Q16. This result was primarily due to an increase in all metal prices as well as higher volume sales of silver, zinc and lead.

Royalty income decreased 18% from US$6.7 million in 1Q16 to US$5.5 million in 1Q17 due to lower revenues at Yanacocha (17% QoQ).

Orcopampa (100% owned by Buenaventura)

Gold production at Orcopampa decreased 4% in 1Q17 year on year, primarily due to lower ore grades (see Appendix 2). Cost Applicable to Sales (CAS) in 1Q17 (777 US$/Oz) increased 13% compared to 1Q16 (688 US$/Oz), mainly due to higher contractor expenses (a non-recurrent closing bonus), an increase in meters drifted and lower ounces sold (4% QoQ).

Gold production guidance for 2017 is 180k – 190k ounces.

Uchucchacua (100% owned by Buenaventura)

Silver production in 1Q17 was in line with 1Q16. Cost Applicable to Sales (CAS) in 1Q17 (10.92 US$/Oz) increased 5% compared to 1Q16 (10.35 US$/Oz), mainly due to an increase in labor expenses and higher contractor expenses (a non-recurrent closing bonus).

Silver production guidance for 2017 is 16.0 million – 17.0 million ounces.

Mallay (100% owned by Buenaventura)

Silver production in 1Q17 decreased 22% year on year, primarily due to lower ore grades (see Appendix 2). Cost Applicable to Sales (CAS) in 1Q17 increased by 10% year on year, primarily due to a decrease in ounces sold (9% QoQ).

Silver production guidance for 2017 is 1.5 million – 1.7 million ounces.

Julcani (100% owned by Buenaventura)

Silver production in 1Q17 was 22% lower compared to 1Q16; primarily due to a decrease in ore treated (15% QoQ) and lower ore grades (10% QoQ). Cost Applicable to Sales (CAS) in 1Q17 (13.36 US$/Oz) was 25% higher than 1Q16 (10.66 US$/Oz), primarily explained by lower production. Management changed the mining method at Julcani after rock fall resulted in a fatal accident in January 2017, temporarily impacting productivity. This effect has been already surpassed.

Silver production guidance for 2017 is 3.0 million – 3.4 million ounces.

La Zanja (53.06% owned by Buenaventura)

Gold production in 1Q17 decreased by 6% year on year, in line with the mine production plan. Cost Applicable to Sales (CAS) in 1Q17 (723 US$/Oz) increased 34% compared to 1Q16 (538 US$/Oz), primarily due to i) increased reagent consumption (associated with an increase in acid water treated), ii) decrease in ounces sold (3% QoQ) and iii) lower ore grades.

Gold production guidance for 2017 is 115k – 125k ounces.

Tantahuatay (40.10% owned by Buenaventura)

Gold production in 1Q17 decreased 10% year on year, in line with the mine production plan. Cost Applicable to Sales (CAS) in 1Q17 (508 US$/Oz) increased 19% compared to 1Q16 (427 US$/Oz) mainly due to a decrease in ounces sold and higher exploration expenses.

Gold production guidance for 2017 is 145k – 155k ounces

El Brocal (61.32% owned by Buenaventura)

Copper production in 1Q17 was in line with 1Q16. In 1Q17 zinc production increased 70% compared to 1Q16 mainly due to an increase ore treated and higher ore grades.

In 1Q17, zinc Cost Applicable to Sales (CAS) increased 32% year to year, mainly due to higher commercial deductions triggered by higher zinc prices (79% QoQ), which activated the treatment charges escalators. Copper CAS in 1Q17 was in line with the figure reported in 1Q16.

Zinc production guidance for 2017 is 60k – 70k MT, while copper production guidance for 2017 is 55k – 65k MT.

General and Administrative Expenses

1Q17 General and Administrative expenses were US$22.5 million; a 5% increase as compared to the US$21.4 million in 1Q16 mainly due to an increase insurance expenses (29% QoQ).

Exploration in Non-Operating Areas

1Q17 Exploration costs in Non-Operating Areas were US$2.3 million compared with US$3.5 million in 1Q16. During the period, Buenaventura’s primarily focused its exploration efforts on the Marcapunta Norte (US$0.38 million) and San Gabriel projects (US$0.19 million).

YANACOCHA

At Yanacocha (43.65% owned by Buenaventura), 1Q17 gold production was 137,621 ounces (60,072 ounces attributable to Buenaventura); a 24% decrease as compared to the 180,348 ounces (78,722 ounces attributable to Buenaventura) produced in 1Q16.

Gold production guidance at Yanacocha for 2017 is 530k – 560k ounces.

In 1Q17, Yanacocha reported a net income of US$10.4 million, compared to a net income of US$8.5 million reported in 1Q16.

CAS in 1Q17 was US$823/oz; a 12% increase as compared to the US$734/oz reported in 1Q16 mainly due to lower volume sold (147,821 gold ounces in 1Q17 vs 180,348 gold ounces in 1Q16).

The Quecher Main project engineering (oxide deposit) is being developed, a decision to progress is expected in 2H17. In the case of Yanacocha Sulphides, technical and economic viability has been improving, with an update expected in 2H17.

Capital expenditures at Yanacocha were US$12.6 million in 1Q17.

CERRO VERDE

At Cerro Verde (19.58% owned by Buenaventura), 1Q17 copper production was 118,744 MT (23,250 MT attributable to Buenaventura), a 4% decrease compared to 1Q16 (123,414 MT and 24,164 MT attributable to Buenaventura).

During 1Q17, Cerro Verde reported a net income of US$184.0 million compared to net income of US$96.9 million in 1Q16. This increase was primarily due to: i) an increase in volumes sold and ii) higher realized price (US$2.83/Lb in 1Q17 compared to US$2.23/Lb in 1Q16).

Capital expenditures at Cerro Verde were US$24.7 million in 1Q17.

Copper production guidance at Cerro Verde for 2017 is 500k MT – 550k MT.

COIMOLACHE (Tantahuatay operation)

At Coimolache (40.10% owned by Buenaventura), 1Q17 attributable contribution to net income was US$4.3 million (US$5.7 million in 1Q16).

Project Development and Exploration

The Tambomayo Project (100% ownership)

• Project ramp-up has been extended due to additional adjustments that have to be made in the tailings filtering process.
• Full capacity expected by 3Q17.
• Updated 2017 Production Guidance of 60k – 90k Au Oz.

The San Gabriel Project (100% ownership)

• Environmental Impact Assessment (EIA) was approved on March 31, 2017.
• Prefeasibility in progress to complete:
  • Mining method and rock support analysis
  • Metallurgical test to optimize the design of the processing plant and recovery rate

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Company Description

Compañía de Minas Buenaventura S.A.A. is Peru’s largest, publicly traded, precious metals company and a major holder of mining rights in Peru. The Company is engaged in the mining, processing, development and exploration of gold and silver and other metals via wholly owned mines as well as through its participation in joint exploration projects.

Buenaventura currently operates several mines in Peru (Orcopampa*, Uchucchacua*, Mallay*, Julcani*, El Brocal, La Zanja and Coimolache and is developing the Tambomayo project.

The Company owns 43.65% of Minera Yanacocha S.R.L (a partnership with Newmont Mining Corporation), an important precious metal producer; 19.58% of Sociedad Minera Cerro Verde, an important Peruvian copper producer.

For a printed version of the Company’s 2015 Form 20-F, please contact the investor relations contacts on page 1 of this report, or download the PDF format file from the Company’s web site at www.buenaventura.com .

(*) Operations wholly owned by Buenaventura

**Tables to follow**

(*)Consolidates
(**) Equity Accounting

APPENDIX 3: EBITDA Reconciliation (in thousand US$)

Note:

EBITDA (Buenaventura Direct Operations) consists of earnings before net interest, taxes, depreciation and amortization, share in associated companies, net, loss on currency exchange difference, other, net, provision for workers’ profit sharing and provision for long-term officers’ compensation.

EBITDA (including associated companies) consists of EBITDA (Buenaventura Direct Operations), plus (1) Buenaventura’s equity share of EBITDA (Yanacocha) (2) Buenaventura’s equity share of EBITDA (Cerro Verde), plus (3) Buenaventura’s equity share of EBITDA (Coimolache). All EBITDA mentioned were similarly calculated using financial information provided to Buenaventura by the associated companies.

Buenaventura presents EBITDA (Buenaventura Direct Operations) and EBITDA (including affiliates) to provide further information with respect to its operating performance and the operating performance of its equity investees, the affiliates. EBITDA (Buenaventura Direct Operations) and EBITDA (including affiliates) are not a measure of financial performance under IFRS, and may not be comparable to similarly titled measures of other companies. You should not consider EBITDA (Buenaventura Direct Operations) and EBITDA (including affiliates) as alternatives to operating income or net income determined in accordance with IFRS, as an indicator of Buenaventura’s, affiliates operating performance, or as an alternative to cash flows from operating activities, determined in accordance with IFRS, as an indicator of cash flows or as a measure of liquidity.

APPENDIX 4: COST APPLICABLE TO SALES RECONCILIATION

Reconciliation of Costs Applicable to Sales and Cost Applicable to Sales per Unit Sold

Cost applicable to sales consists of cost of sales, excluding depreciation and amortization, plus selling expenses. Cost applicable to sales per unit sold for each mine consists of cost applicable to sales for a particular metal produced at a given mine divided by the volume of such metal produced at such mine in the specified period. We note that cost applicable to sales is not directly comparable to the cash operating cost figures disclosed in previously furnished earnings releases.

Cost applicable to sales and Cost applicable to sales per unit of mineral sold are not measures of financial performance under IFRS, and may not be comparable to similarly titled measures of other companies. We consider Cost applicable to sales and Cost applicable to sales per unit of mineral sold to be key measures in managing and evaluating our operating performance. These measures are widely reported in the precious metals industry as a benchmark for performance, but do not have standardized meanings. You should not consider Cost applicable to sales or Cost applicable to sales per unit of mineral sold as alternatives to cost of sales determined in accordance with IFRS, as indicators of our operating performance. Cost applicable to sales and Cost applicable to sales per unit of mineral sold are calculated without adjusting for by-product revenue amounts.

The tables below set forth (i) a reconciliation of consolidated Cost of sales, excluding depreciation and amortization to consolidated Cost applicable to sales, (ii) reconciliations of the components of Cost applicable to sales (by mine and mineral) to the corresponding consolidated line items set forth on our consolidated statements of profit or loss for the three and nine months ended September 30, 2015 and 2016, and (iii) reconciliations of Cost of sales, excluding depreciation and amortization to Cost applicable to sales for each of our mining units. The amounts set forth in Cost applicable to sales and Cost applicable to sales per unit sold for each mine and mineral indicated in the tables below can be reconciled to the amounts set forth on our consolidated statements of profit or loss for the three and nine months ended September 30, 2015 and 2016 by reference to the reconciliations of Cost of sales, excluding depreciation and amortization (by mine and mineral), Selling Expenses (by mine and metal) expenses and Exploration in units in operations (by mine and mineral) to consolidated Cost of sales, excluding depreciation and amortization, consolidated Selling Expenses and consolidated Exploration in units in operations expenses, respectively, set forth below.

APPENDIX 5: ALL-IN SUSTAINING COST