PLAINS ALL AMERICAN PIPELINE LP files DEFA14A

This supplemental proxy filing from Plains All American Pipeline, L.P. (PAA) and Plains GP Holdings, L.P. (PAGP) urges shareholders to vote FOR Proposal 3, the advisory Say on Pay proposal for 2025 Named Executive Officer compensation, at the 2026 Annual Meetings. The filing addresses concerns raised by Institutional Shareholder Services (ISS) regarding the CEO's long-term incentive award, the annual incentive program's individual performance component, and the disclosure of relative Total Shareholder Return (TSR) metric goals.