X0609 4 2026-08-01 0 0000352825 FOSTER L B CO FSTR 0002146909 Bowlin Jason Kyle false C/O L.B. FOSTER COMPANY 415 HOLIDAY DRIVE, SUITE 100 PITTSBURGH PA 15220 0 1 0 0 Senior Vice President - Rail 0 Common Stock 2026-08-01 4 A 0 398 0 A 6980 D Award of 398 restricted stock units (RSUs) which are settled in stock upon vesting and generally will vest ratably over a three-year period on the first, second, and third anniversary of the date of the grant. Includes 340 Performance Restricted Stock Units earned under the 2025-2027 Long Term Incentive Plan granted on 5/22/2025; those 340 Performance Restricted Stock Units will settle at the end of the performance period on December 31, 2027, upon certification by the Compensation Committee. Includes 1,288 Performance Restricted Stock Units earned under the 2024-2026 Long Term Incentive Plan granted on 5/23/2024; those 1,288 Performance Restricted Stock Units will settle at the end of the performance period on December 31, 2026, upon certification of the Compensation Committee. /s/ Jason K. Bowlin by Maribel Castro, attorney-in-fact 2026-08-04