Darling Ingredients Inc. has signed a definitive agreement with Tessenderlo Group to combine the collagen and gelatin segments of both companies into a new joint venture. The new company will merge Darling Ingredients' Rousselot business with Tessenderlo's PB Leiner, with Darling holding an 85% stake and Tessenderlo 15%. The venture is expected to have annual revenues of around $1.5 billion and a total production capacity of approximately 200,000 metric tons across 22 facilities worldwide. The transaction, which requires regulatory approval, is anticipated to close in 2026 and aims to accelerate growth in the global collagen-based health, wellness, and nutrition market.