• Charles River Laboratories average operating margin for 2023 was 15.56%, a 9.59% decline from 2022.
• Charles River Laboratories average operating margin for 2022 was 17.21%, a 7.76% decline from 2021.
• Charles River Laboratories average operating margin for 2021 was 15.97%, a 12.46% 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.