Exhibit 99.1 News Release Sales and Profitability Growth Drive Continuing Momentum in L.B. Foster First Quarter 2024 Results; Company Reaffirms 2024 Guidance • First quarter net sales of $124.3 million up 7.6% year over year (up 16.9% organically1); gross profit of $26.2 million up 12.7% year over year with gross margins expanding 90 basis points ("bps") to 21.1%. • First quarter net income of $4.4 million favorable $6.6 million year over year; first quarter adjusted EBITDA1 of $5.9 million up 32.4% year ov ...