Investor Presentation December 2021

Driving resilience, safety, system integrity and sustainability Employee safety (OSHA-Days Away, Restricted or Transferred rate) Damages (Per 1,000 locates) 4.78 3.22 2.63 1.88 1.56 1.51 4.24 3.87 3.89 3.74 2017 2018 2019 2020 2021 2017 2018 2019 2020 2021 Leaks (Per 1,000 system miles) 99.7 75.6 60.4 48.8 31.8 Methane emission reduction (From 2005 levels) 26% 39% 43% 46% 57% 73% 2017 2018 2019 2020 2021 2015 2019 2020 2021 Target 2025 2035 Target Target - 10 Spire | Investor presentation December 2021

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