Investor Presentation June 2021

Driving resilience, safety, system integrity and sustainability Employee safety (OSHA-Days Away, Restricted or Transferred rate) 3.65 3.22 2.63 1.88 1.56 Damages (Per 1,000 locates) 4.76 4.78 4.24 3.87 3.89 2016 2017 2018 2019 2020 2016 2017 2018 2019 2020 Leaks (Per 1,000 system miles) 141.9 99.7 75.6 60.4 48.8 Leak response (Average minutes) 28.9 28.4 26.8 25.2 25.2 2016 2017 2018 2019 2020 2016 2017 2018 2019 2020 23 Spire | Investor presentation June 2021

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