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RIOM on NYSE

Rio Alto Mining

Logo: rioaltomining.com3

Gold mining company

Rio Alto Mining was a Vancouver-based international gold producer engaged in the exploration, development, and production of mineral resource properties throughout Latin America, with its principal asset, the La Arena mine, in La Libertad Region, Peru. The company and its assets were acquired by Tahoe Resources, Inc. in 2015, and the company no longer exists.2 Its shares trade on NYSE under the symbol RIOM.1 Wikipedia text CC BY-SA 4.0

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Last updated Oct 21, 2026.

Overview

2006Founded1

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  • TickerRIOM on NYSE1
  • Industrygold mining1
  • HeadquartersVancouver1
  • Websitewww.rioaltomining.com
  • Listed onNew York Stock Exchange (RIOM), Toronto Stock Exchange1

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La Arena Mine
Photo: Ian Bezek, CC BY-SA 3.0, via Wikimedia Commons5

Rio Alto Mining was a Vancouver-based international gold producer engaged in the exploration, development, and production of mineral resource properties throughout Latin America, with its principal asset, the La Arena mine, in La Libertad Region, Peru. The company and its assets were acquired by Tahoe Resources, Inc. in 2015, and the company no longer exists.2

Products and brands

Rio Alto's annual gold production exceeded 200,000 ounces from its La Arena mine.

In 2008, Rio Alto purchased La Arena from Iamgold for $48 million. In May 2011, the company poured its first gold from operations at La Arena. Tahoe Resources announced a merger with Rio Alto Mining on February 9, 2015 for $1.12B. The merger was completed on April 1, 2015.

From Wikipedia’s article on Rio Alto Mining, shared under CC BY-SA 4.0.4

Timeline

  1. 2006Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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    Company websiteRio Alto Mining logo
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