FORT WORTH, TX – American Airlines Group Inc. (NASDAQ: AAL) announced that Nathaniel (Nat) Pieper has been appointed as Chief Commercial Officer, effective Nov. 3, 2025. Pieper currently serves as CEO of the oneworld alliance and will report directly to American Airlines CEO Robert Isom.
As Chief Commercial Officer, Pieper will oversee American’s commercial strategy and performance, including alliances, cargo, co-branded credit card programs, loyalty, network planning, revenue management, and sales. He will also co-lead the airline’s Customer Experience team alongside Chief Operating Officer David Seymour.
Pieper’s recent tenure at oneworld began in April 2024. Under his leadership, the alliance integrated two new member airlines, launched sustainability and customer experience initiatives, and redefined its long-term strategy with a focus on digital integration and premium service.
Previously, Pieper held senior roles at Alaska Air Group, Delta Air Lines, and Northwest Airlines. His accomplishments include leading Alaska’s entry into oneworld, developing partnerships with American, managing aircraft transactions, and securing liquidity during the COVID-19 pandemic. At Delta, he managed commercial operations across key international markets and played a pivotal role in fleet strategy.
Pieper holds a B.A. in history from Duke University and an M.B.A. from the Kellogg School of Management at Northwestern University.
In conjunction with the appointment, Steve Johnson will resume his position as Vice Chair and Chief Strategy Officer.
