• Sanofi average gross margin for 2023 was 69.66%, a 0.84% decline from 2022.
• Sanofi average gross margin for 2022 was 70.25%, a 1.77% decline from 2021.
• Sanofi average gross margin for 2021 was 69.03%, a 0.13% increase from 2020.

Gross margin can be defined as a company's total sales revenue minus its cost of goods sold, divided by the total sales revenue, expressed as a percentage.