Ms. Vallejo joined the Coterra Board of Directors following her tenure on the Cimarex Board of Directors, which began in 2017. She serves as Chair of the Governance and Social Responsibility Committee and as a member of the Audit Committee.

Ms. Vallejo is a former executive officer of ConocoPhillips, most recently serving as Vice President for Corporate Planning and Development from 2015 to 2016, after serving as Vice President and Treasurer from 2008 to 2015. Prior to 2008, she held several other leadership positions, including General Manager for Corporate Planning and Budgets, Vice President for Upstream Planning & Portfolio Management, Assistant Treasurer, Manager for Strategic Transactions, and in multiple geophysical, commercial, and finance roles.

Ms. Vallejo currently serves on the Board of Directors of Expro Group Holdings N.V. and South Bow Corporation. Prior board service includes Crestwood Equity GP LLC from 2021 to 2023. Ms. Vallejo was a member of the Board of Trustees of Colorado School of Mines from 2010 to 2016 and is a member of Colorado School of Mines Foundation Board of Governors.