In 2025, ICON 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).
ICON has also provided a category-level breakdown for 8 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 | 3,881a | 2,357a | 2,963a | |
Total Scope 2 | ||||
Market-Based | 380a | 2,469a | 5,233a | |
Location-Based | 12,213a | 13,344a | 13,466a | |
Total Scope 3 | 360,151a | 356,983b | 357,552b | |
Total Scope 1 Revenue Intensity (tCO2e/$M) | 0.4703a | 0.2846a | 0.3649a |
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In 2025, the total operational greenhouse gas (GHG) emissions of ICON amounted to 16,094 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 ICON increased by 2.5%, suggesting that the company faced challenges in reducing its emissions from its core operations.a
In 2025, the total Scope 1 emissions of ICON were 3,881 metric tons of CO₂ equivalent (tCO₂e).a
Since 2019, ICON's Scope 1 emissions have increased by 38.81%, reflecting a rising long-term trend in Scope 1 emissions over time.a
Compared to the previous year (2024), ICON's Scope 1 emissions increased by 64.66%, suggesting that the company faced challenges in reducing emissions from its directly owned or controlled operations.a
In 2025, ICON reported Scope 2 greenhouse gas (GHG) emissions of 380 tCO₂e using the market-based method and 12,213 tCO₂e using the location-based method.a
Since 2019, ICON's Scope 2 greenhouse gas (GHG) emissions (Location-Based) have decreased by 19.34%, reflecting a declining long-term trend in Scope 2 emissions over time.a
Compared to the previous year (2024), ICON's Scope 2 emissions (Location-Based) have remained relatively stable, indicating that ICON's emissions have plateaued with no significant change in its energy consumption footprint.a
In 2025, ICON reported its Scope 2 emissions using the market-based method and using the location-based method.a
In 2025, ICON reported 360,151 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 ICON includes a breakdown across 8 of the 15 Scope 3 categories defined by the GHG Protocol, matching the level of disclosure in 2024, demonstrating consistent Scope 3 emissions reporting coverage year over year.a
In 2025, ICON reported total Scope 3 emissions of 360,151 metric tons of CO₂ equivalent (tCO₂e).a
Approximately 100% of these emissions originated from upstream activities such as purchased goods and capital goods, while 0% came from downstream activities like product use, distribution, and end-of-life treatment.a
Since 2019, ICON's Scope 3 emissions have increased by 5,422.09%, reflecting a rising long-term trend in Scope 3 emissions over time.ab
Compared to the previous year (2024), ICON's Scope 3 emissions remained relatively stable, indicating that ICON's emissions have plateaued with no significant change in its value chain footprint.ab
In 2025, ICON reported emissions for 8 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 ICON's Scope 3 emissions were:a
In 2025, ICON reported Scope 1 greenhouse gas (GHG) emissions of 3,881 tCO₂e and total revenues of USD 8,252 millions. This translates into an emissions intensity of 0.47 tCO₂e per millions USD.a
In 2025, ICON reported a Scope 1 emissions intensity of 0.47 tCO₂e per millions USD. Compared to the peer group median of 4.56, this places the company below its industry benchmark, indicating it is more carbon-efficient than most competitors.a
In 2025, ICON ranked 2 out of 24 companies in its industry peer group, based on Scope 1 emissions intensity (measured in tCO₂e per millions USD).a
This places ICON among the top performers, with one of the lowest emissions intensities relative to peers.a
In 2025, ICON reported a total carbon footprint of 376,245 metric tons of CO₂ equivalent (tCO₂e) across Scope 1, Scope 2, and Scope 3 emissions. This represents a 0.96% increase compared to 2024, suggesting a rise in emissions across its operations or value chain.ab
The largest contributor to ICON's total carbon footprint was Scope 3 emissions, accounting for 95.72% of the company's total carbon footprint, followed by Scope 2 emissions at 3.25%.a