Exhibit 99.1 Ingevity reports second quarter 2024 financial results Performance Materials Ingevity Corporation 4920 O'Hear Avenue Suite 400 North Charleston, SC 29405 USA www.ingevity.com Contact: Caroline Monahan 843-740-2068 media@ingevity.com Investors: John E. Nypaver, Jr. 843-740-2002 investors@ingevity.com HIGHLIGHTS: • Net sales of $390.6 million, down 19$283.7 million and diluted loss per share of $7.81 primarily due to a Performance Chemicals non-cash goodwill ...