Form 4 Filing for Robert Ness

This filing details a transaction by Robert Ness, SVP, Precast Concrete Products at FOSTER L B CO. On May 22, 2026, Ness disposed of 683 shares of Common Stock, acquired under a Long Term Incentive Plan, with a transaction code F and a price per share of $38.11. Following this transaction, Ness holds 32,370 shares. The filing also includes information on performance restricted stock units earned under different LTIP awards, which will settle at the end of their respective performance periods. A limited power of attorney granted to Maribel Castro and others for filing SEC documents is also included, dated May 21, 2026.