• Alnylam Pharmaceuticals average gross margin for 2023 was 82.88%, a 1.04% decline from 2022.
• Alnylam Pharmaceuticals average gross margin for 2022 was 83.75%, a 0.52% decline from 2021.
• Alnylam Pharmaceuticals average gross margin for 2021 was 83.32%, a 0.87% 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.