Riordan is a co-founder and serves as Chief Commercial Officer of Meridian Infrastructure, where he is responsible for leading all commercial and business development activities, including origination, customer and partnership development, commercial negotiations and evaluating greenfield and brownfield expansion opportunities at Meridian.Before joining Meridian, Sean served as Chief Commercial Officer of Moda Midstream from November 2021 to the company sale in March 2024. He was instrumental in developing new terminal growth opportunities across conventional hydrocarbon and new energies verticals.Before joining Moda, Sean served as Vice President, Business Development at Caliche Coastal Caverns, a private equity-backed company that developed and operated liquids sub-salt cavern storage on the Spindletop dome and that was sold to Energy Transfer. Prior to joining the Coastal Cavern development, Sean was a Director, Business Development at Energy Transfer Partners (ETP) focused on developing and commercializing first-of-kind Natural Gas Liquids export assets.Sean has significant experience developing U.S. Gulf Coast hydrocarbon and industrial gas infrastructure. His record includes sourcing an exclusive development agreement with an industrial gas major for brownfield expansion for first-of-kind clean hydrogen terminal project; he also originated, negotiated and closed an exclusive MOU joint development agreement with an industrial gas major for a first-of-kind clean ammonia export project utilizing CCS. Other projects on Sean’s track record include originating an LPG export opportunity at a South Texas Gulf Coast terminal, and originating, negotiating and closing a 20-year first-of-kind helium sub salt storage cavern and associated facilities.