D. E. Shaw & Co. Reports New 5.7% Stake in Pioneer Acquisition I Corp (PACH)

On May 15, 2026, D. E. Shaw & Co., L.P., along with affiliated entities and David E. Shaw, filed a Schedule 13G reporting a 5.7% ownership stake in Pioneer Acquisition I Corp (PACH). The reporting group beneficially owns 1,252,350 Class A ordinary shares. The filing indicates that the shares are held directly by D. E. Shaw Valence Portfolios, L.L.C. D. E. Shaw & Co., L.P. serves as the investment adviser, and D. E. Shaw & Co., L.L.C. serves as the manager for the holder. David E. Shaw, as the President and sole shareholder of the controlling entities, may be deemed to have shared voting and dispositive power over these shares, though he disclaims beneficial ownership. This filing marks a new significant position for the D. E. Shaw group in PACH, as the previous ownership was reported at 0.0%. The event triggering this filing occurred on March 31, 2026. The filing includes joint filing agreements and powers of attorney for the reporting persons.