In 2025, Gilead Sciences completed a corporate carbon footprint assessment and publicly disclosed its greenhouse gas (GHG) emissions according to the GHG Protocol, covering Scope 1 (direct emissions from owned or controlled sources), Scope 2 (indirect emissions from purchased energy) and Scope 3 (indirect emissions across the value chain).
Gilead Sciences has also provided a category-level breakdown for 10 out of 15 Scope 3 emissions categories, offering greater transparency into its value chain emissions.
| Metric (tCO2e) | 2025 | 2024 | 2023 | 2022-2019 |
|---|---|---|---|---|
Total Scope 1 | 50,346a | 53,901a | 56,435b | |
Total Scope 2 | ||||
Market-Based | 45a | 17,096a | 22,603b | |
Location-Based | 42,584a | 45,615a | 54,180b | |
Total Scope 3 | 1,355,943a | 998,100b | 1,146,141b | |
Total Scope 1 Revenue Intensity (tCO2e/$M) | 1.71a | 1.8746a | 2.0812b |
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In 2025, the total operational greenhouse gas (GHG) emissions of Gilead Sciences amounted to 92,930 metric tons of CO2 equivalent. This figure includes both direct emissions from owned or controlled sources (Scope 1) and indirect emissions from purchased energy (Scope 2).a
Compared to 2024, the total operational greenhouse gas (GHG) emissions of Gilead Sciences decreased by 6.62%, showing that the company has made progress in taking action to reduce the climate impact of its operations.a
In 2025, the total Scope 1 emissions of Gilead Sciences were 50,346 metric tons of CO₂ equivalent (tCO₂e).a
Since 2019, Gilead Sciences's Scope 1 emissions have decreased by 6.94%, reflecting a declining long-term trend in Scope 1 emissions over time.ac
Compared to the previous year (2024), Gilead Sciences's Scope 1 emissions decreased by 6.6%, highlighting the company's efforts to lower direct emissions from assets it owns or controls.a
In 2025, Gilead Sciences reported Scope 2 greenhouse gas (GHG) emissions of 45 tCO₂e using the market-based method and 42,584 tCO₂e using the location-based method.a
Since 2019, Gilead Sciences's Scope 2 greenhouse gas (GHG) emissions (Location-Based) have decreased by 22.86%, reflecting a declining long-term trend in Scope 2 emissions over time.ac
Compared to the previous year (2024), Gilead Sciences's Scope 2 emissions (Location-Based) have remained relatively stable, indicating that Gilead Sciences's emissions have plateaued with no significant change in its energy consumption footprint.a
In 2025, Gilead Sciences reported its Scope 2 emissions using the market-based method and using the location-based method.a
In 2025, Gilead Sciences reported 1,355,943 metric tons of CO₂ equivalent (tCO₂e) of Scope 3 greenhouse gas (GHG) emissions, representing indirect emissions across its upstream and downstream value chain.a
The 2025 disclosure of Gilead Sciences includes a breakdown across 9 of the 15 Scope 3 categories defined by the GHG Protocol, down from 10 in 2024, indicating a decline in reporting granularity and reduced insight into the company's full value chain emissions.a
In 2025, Gilead Sciences reported total Scope 3 emissions of 1,355,943 metric tons of CO₂ equivalent (tCO₂e).a
Approximately 96.33% of these emissions originated from upstream activities such as purchased goods and capital goods, while 3.67% came from downstream activities like product use, distribution, and end-of-life treatment.a
Since 2019, Gilead Sciences's Scope 3 emissions have increased by 1,998.98%, reflecting a rising long-term trend in Scope 3 emissions over time.ac
Compared to the previous year (2024), Gilead Sciences's Scope 3 emissions increased by 35.85%, suggesting that the company faced challenges in reducing emissions across its value chain.ab
In 2025, Gilead Sciences reported emissions for 9 out of the 15 Scope 3 categories defined by the GHG Protocol.a
This partial disclosure allows for some insight into the company's indirect impacts.
In 2025, the largest contributors to Gilead Sciences's Scope 3 emissions were:a
In 2025, Gilead Sciences reported Scope 1 greenhouse gas (GHG) emissions of 50,346 tCO₂e and total revenues of USD 29,442 millions. This translates into an emissions intensity of 1.71 tCO₂e per millions USD.a
In 2025, Gilead Sciences reported a Scope 1 emissions intensity of 1.71 tCO₂e per millions USD. Compared to the peer group median of 4.57, this places the company below its industry benchmark, indicating it is more carbon-efficient than most competitors.a
In 2025, Gilead Sciences ranked 2 out of 25 companies in its industry peer group, based on Scope 1 emissions intensity (measured in tCO₂e per millions USD).a
This places Gilead Sciences among the top performers, with one of the lowest emissions intensities relative to peers.a
In 2025, Gilead Sciences reported a total carbon footprint of 1,448,873 metric tons of CO₂ equivalent (tCO₂e) across Scope 1, Scope 2, and Scope 3 emissions. This represents a 32% increase compared to 2024, suggesting a rise in emissions across its operations or value chain.ab
The largest contributor to Gilead Sciences's total carbon footprint was Scope 3 emissions, accounting for 93.59% of the company's total carbon footprint, followed by Scope 1 emissions at 3.47%.a