In just four days, the ”dumbest” — and largest — proxy fight hedge funder Nelson Peltz ever fought will come to a close.

Procter & Gamble shareholders will vote on Tuesday whether Peltz deserves a seat on the consumer-goods company’s 12-person board.

Peltz announced a $3.5 billion stake in P&G through his hedge fund Trian Partners in July. He has argued that his presence is needed on the board to chip away at P&G’s “insular” culture.

“This proxy fight is probably the dumbest thing I’ve ever been involved in,” Peltz told CNBC on Friday, citing the estimated $100 million P&G is spending to keep him off the board.

P&G is opposing Peltz, saying it “is on the right track, with the right management team, the right Board and the right plan.”