Option Agreement with Freeport Nevada

On June 13, 2016, Quaterra and its wholly-owned subsidiary Singatse Peak Services LLC (SPS) announced they had reached an agreement with Freeport-McMoRan Nevada LLC (Freeport Nevada) to extend the current Stage 2 of Freeport Nevada’s option to acquire an interest in the Company’s Yerington Copper Project in Nevada for up to two years by Freeport Nevada making option payments totalling $5.75 million. Freeport Nevada is a wholly owned subsidiary of Freeport Minerals Corporation, which in turn is a wholly owned subsidiary of Freeport-McMoRan Inc. (NYSE:FCX).

In terms of the amended agreement, Stage 2 of Freeport Nevada’s earn-in option, which commenced in June 2015, can be extended for up to four additional periods of six months each by Freeport Nevada making the following payments to SPS: $1.8 million on June 13, 2016; $1.25 million on December 13, 2016; $1.35 million on June 13, 2017; and $1.35 on December 13, 2017. (All amounts are expressed in U.S. dollars).

SPS intends to use the Freeport Nevada’s option payments for property maintenance, G&A and environmental compliance at its Yerington Copper Project. Freeport Nevada will have the right to terminate the agreement at any time with 60 days’ notice.

During the two-year extension period, SPS may propose special exploration programs, including work plans and budgets, to be undertaken with Freeport Nevada’s agreement under an annual drilling program. These programs will be funded by Freeport Nevada, at its discretion, through accelerated option payments. The Stage 2 extension option payments and any accelerated option payments will reduce the payments required for Freeport Nevada to earn its initial 55% interest in SPS.

SPS will continue to initiate and self-fund desktop studies to assess the over-all development potential at Yerington, and surface work including geophysical surveys to better understand the Bear porphyry copper deposit, one of three known copper deposits on the Company’s 51-square mile Yerington land package. Geophysical surveys will also assist in future drill site selection. Freeport Nevada has the option to participate in these studies as part of due diligence.

A recently completed six-hole exploration program at the Bear deposit was successful in extending mineralization an additional 2,000 feet north-northeast by 3,000 feet northwest-southeast. The mineralized intercept in four step-out holes was on average approximately 1,000 feet thick.

In June 2014, Quaterra and SPS entered into a three-stage, four-year agreement which gives Freeport Nevada an option to earn an initial 55% interest in SPS by providing $40.7 million in option payments to SPS. The June 2016 amendment potentially extends that period by another two years. Freeport Nevada can earn a further 20% in SPS (increasing its holding to 75%) by spending $99.5 million or by funding a feasibility study, whichever comes first. Before then, Freeport Nevada can terminate the agreement at its discretion.

Quaterra’s Yerington Copper Project – located in the historic Yerington Copper District, about 70 miles southeast of Reno, Nevada – consists of the Bear porphyry copper deposit; the Yerington pit oxide and sulfide deposit previously mined by Anaconda; the MacArthur oxide and sulfide deposit; and several untested exploration targets. Quaterra’s 51-square-mile land package is situated in a mining-friendly jurisdiction with a history of copper production and good infrastructure. It also owns valuable water rights in the district. Quaterra has invested some $36 million in the Yerington District since 2006, and has released NI 43-101-compliant oxide and sulfide resources at both MacArthur and Yerington, and a preliminary economic assessment at MacArthur. Quaterra’s Yerington assets have the potential to be transformed into a large-scale, long-life copper mining operation.