5 customers — 54% of revenue (the year ended December 31, 2025)

“For the year ended December 31, 2025, the Company's top five customers in Rail accounted for approximately 54% of revenues in that Segment and 6% of the Company's consolidated revenues.”

5 customers — 37% of revenue (the year ended December 31, 2025)

“For the year ended December 31, 2025, the Company's top five customers in HE accounted for approximately 37% of revenues in that Segment and 17% of the Company's consolidated revenues.”

5 customers — 27% of revenue (the year ended December 31, 2025)

“For the year ended December 31, 2025, the Company's top five customers in CE accounted for approximately 27% of the revenues in that Segment and 12% of the Company's consolidated revenues.”

5 customers — 17% of revenue (the year ended December 31, 2025)

“For the year ended December 31, 2025, the Company's top five customers in HE accounted for approximately 37% of revenues in that Segment and 17% of the Company's consolidated revenues.”

5 customers — 12% of revenue (the year ended December 31, 2025)

“For the year ended December 31, 2025, the Company's top five customers in CE accounted for approximately 27% of the revenues in that Segment and 12% of the Company's consolidated revenues.”

One customer — 10% of revenue (2025, 2024, and 2023)

“In 2025, 2024, and 2023, CE had one customer that provided in excess of 10% of its revenue.”

2 customers — 10% of revenue (2025 and 2024)

“In 2025 and 2024, Rail had two customers that provided more than 10% of the segment total revenues and, in 2023, Rail had one customer that provided more than 10% of the segment total revenues.”

One customer — 10% of revenue (2025, 2024 and 2023)

“In 2025, 2024 and 2023, HE had one customer that provided in excess of 10% of its revenues under multiple long-term contracts at several mill sites.”

5 customers — 6% of revenue (the year ended December 31, 2025)

“For the year ended December 31, 2025, the Company's top five customers in Rail accounted for approximately 54% of revenues in that Segment and 6% of the Company's consolidated revenues.”

One customer — 10% of revenue (each of the past three years)

“HE had one customer in each of the past three years that provided more than 10% of this segment's revenues, again under many long-term contracts at multiple sites.”