FY21 ESG Disclosures July 2022 Unaudited 8 We have approved near- and long-term science-based emissions reduction targets with the SBTi. This means our emissions reduction targets are consistent with the aim of the Paris Agreement to limit average global warming to 1.5°C by the end of the century, compared to pre-industrial temperatures. They are also consistent with the Net-Zero Standard. Our near-term targets are approved by the SBTi as follows:  We commit to reduce absolute scope 1 and 2 GHG emissions 50% by 2030 from a 2019 base year and we commit to reduce absolute scope 3 GHG emissions from business travel and employee commuting by 50% over the same timeframe.  We commit that 65% of our suppliers by spend covering purchased goods and services will have science-based targets by 2025. Our long-term targets are approved by the SBTi as follows:  We commit to reduce absolute scopes 1, 2 & 3 GHG emissions 90% by 2040 from a 2019 base year. In January 2021, we made a three-year commitment to CDP – an international non-profit organization that runs a global disclosure system focused on environmental impact – as a supply chain member to engage our suppliers, pinpoint risks and identify opportunities to support our suppliers in reducing emissions and strengthening their climate resiliency. Jacobs was recognized on CDP’s 2021 Supplier Engagement Leaderboard for engaging our suppliers on climate change and playing a crucial role in the transition towards the net-zero sustainable economy. We continue to be a member of the U.S. EPA Green Power Partnership, a voluntary program that supports the development of new renewable generation capacity in the U.S. and requires annual use of green power at a level that meets or exceeds partnership benchmark requirements. Thanks to our industry-leading commitments and achievement, we are now proud to be one of the Top Partner Rankings as a U.S. EPA Green Power Partnership 100% Green Power User . We use the GHG Protocol Corporate Accounting and Reporting standard to calculate emissions using Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report emission factors. All GHGs, including CO2, CH4, N20, HFCs, PFCs, SF6 and NF3, are included in calculations of metric tonnes of carbon dioxide equivalents (C02e). We use an operational control approach as the boundary for consolidation of emissions. We are using 2019 as our baseline year for all carbon reporting and carbon reduction target- setting, and we are committed to publishing our GHG inventory (carbon footprint), which is verified by an accredited third party each year with limited assurance. In FY19, we completed the acquisition of KeyW. In FY20, we completed the acquisition of John Wood Group’s nuclear business, Wood Nuclear Group. FY19 base year values have been updated to reflect these acquisitions, as well as improvements to data collection and a better understanding of boundaries. In FY21, we completed the acquisition of Buffalo Group. The emissions from The Buffalo Group have been added to the FY21 inventory but have not been added to the FY19 baseline values because they are not materially significant, comprising less than 1% of our total FY21 inventory. Table 1 summarizes our commitment to carbon neutrality for our operations and business travel and reflects progress against our science-based targets prior to and after the application of renewable electricity and carbon offsets: Table 1. Science-based Target Progress Metric FY19 [a, b] (Baseline) (Metric tonnes CO2e) FY21 [a, c] (Metric tonnes CO2e) % Change Scope 1 20,539 16,749 -18% Mobile Combustion 20,033 16,312 -19% Stationary Combustion 506 393 -22% HFC Fugitive Emissions Not Reported 44 n/a