Sitting only a few feet away, nodding in agreement, was Procter & Gamble Co Chief Executive David Taylor, who ended one of the industry's most acrimonious corporate battles by inviting Peltz onto P&G's board in 2018. For nearly four years until Peltz' retirement from the P&G board in August, the men traded ideas about how to woo new customers to buy Tide detergent and Pampers diapers. Since Trian first invested with P&G, the company's stock price nearly doubled.