ConocoPhillips Signs Agreement with Caelus Natural Resources to Acquire Nuna Discovery Acreage

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HOUSTON – ConocoPhillips Alaska (COPA) today announced that it has entered into an agreement with
Caelus Natural Resources Alaska, LLC to acquire 100 percent of the Nuna discovery, located just east of
the Colville River and approximately five miles southwest of the Oooguruk Field.

The Nuna prospect was announced as a discovery in 2012. The purchase includes 11 tracts covering
21,000 acres. Over the next several years, COPA will appraise Nuna with a goal toward making a final
investment decision thereafter. The transaction is subject to state regulatory approval and has an
effective date of June 14, 2019.

“This transaction represents an attractive addition to our expanding North Slope position and will allow
ConocoPhillips to cost effectively develop Nuna utilizing Kuparuk River Unit infrastructure,” said Joe
Marushack, president of ConocoPhillips Alaska. “We believe this acquisition could lead to more oil
production, more revenue for the state and more jobs for Alaskans.”

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About ConocoPhillips Alaska

ConocoPhillips has led the search for energy in Alaska for more than 50 years. We are committed to responsibly developing Alaska’s resources, providing economic opportunity for Alaska, operating at the highest standards of safety and environmental stewardship, and serving as good corporate citizens in our communities. For more
information, visit www.conocophillipsalaska.com.

Follow us on Facebook (https://www.facebook.com/conocophillips) and Twitter (@COP_Alaska) for North Slope
project updates.

Contacts

Natalie Lowman
907-263-4153 desk
907-229-9190 cell
n.m.lowman@conocophillips.com

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