Ambatovy joined the Business and Biodiversity Offsets Programme (BBOP) in 2006 as a pilot project. In 2009, Ambatovy, together with BBOP, published a case study on the company’s biodiversity management and offset work up to that point (available at http://www.forest-trends.org/documents/fi les/doc_3118.pdf). The present document serves as an update on Ambatovy’s progress achieved since then and following a second-party evaluation (pre-audit) against the BBOP Standard on Biodiversity Offsets (BBOP, 2012) and the International Finance Corporation’s Performance Standard 6 (IFC, 2012). For more detail and a history of the company’s work in applying the mitigation hierarchy and biodiversity offsetting, it is useful also to refer back to the 2009 original case study. With the publication of this update, Sherritt International Corporation, Forest Trends, and Wildlife Conservation Society (WCS) hope to contribute to the knowledge on biodiversity management and offsetting, to stimulate discussion, and possibly to assist others in understanding certain technical aspects of offset design and implementation, as well as some of the challenges that may be encountered and solutions that may be available.