• Summit Materials average operating margin for 2023 was 12.11%, a 13.71% decline from 2022.
• Summit Materials average operating margin for 2022 was 10.65%, a 3.5% increase from 2021.
• Summit Materials average operating margin for 2021 was 10.29%, a 1.98% increase from 2020.

Operating margin can be defined as operating margin measurement of what proportion of a company's revenue is left over after paying for variable costs of production such as wages, raw materials, etc.