• Main Street Capital average operating margin for 2023 was 66.71%, a 3.91% increase from 2022.
• Main Street Capital average operating margin for 2022 was 64.2%, a 2.87% increase from 2021.
• Main Street Capital average operating margin for 2021 was 62.41%, a 1.23% 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.