Source: Powell Industries Form 10-K and Form 10-Q MD&A order-backlog mix. Q4 FY2025: electric utility 33%, oil and gas excluding petrochemical 33%, commercial and other industrial 15%, petrochemical 8%, light rail traction power 8% (residual 3%): Form 10-K year ended 30 Sep 2025 https://www.sec.gov/Archives/edgar/data/80420/000008042025000152/powl-20250930.htm. Q1 FY2026: oil and gas excluding petrochemical 32%, electric utility 30%, commercial and other industrial 22%: Form 10-Q ended 31 Dec 2025 https://www.sec.gov/Archives/edgar/data/80420/000008042026000015/powl-20251231.htm. Q2 FY2026: electric utility 30%, oil and gas excluding petrochemical 29%, commercial and other industrial 29%: Form 10-Q ended 31 Mar 2026 https://www.sec.gov/Archives/edgar/data/80420/000008042026000070/powl-20260331.htm. Q3 FY2026: commercial and other industrial 40%, oil and gas excluding petrochemical 24%, electric utility 24%: Form 10-Q ended 30 Jun 2026 https://www.sec.gov/Archives/edgar/data/80420/000008042026000107/powl-20260630.htm.

Source: Powell Industries Form 10-Q and Form 10-K remaining unsatisfied performance obligations footnote (backlog, of which approximately $X expected within the next twelve months). Q4 FY2024 $1.3 billion / $849 million: Form 10-K year ended 30 Sep 2024 https://www.sec.gov/Archives/edgar/data/80420/000008042024000086/powl-20240930.htm. Q1 FY2025 $1.3 billion / $893 million: Form 10-Q ended 31 Dec 2024 https://www.sec.gov/Archives/edgar/data/80420/000008042025000029/powl-20241231.htm. Q2 FY2025 $1.3 billion / $831 million: Form 10-Q ended 31 Mar 2025 https://www.sec.gov/Archives/edgar/data/80420/000008042025000061/powl-20250331.htm. Q3 FY2025 $1.4 billion / $913 million: Form 10-Q ended 30 Jun 2025 https://www.sec.gov/Archives/edgar/data/80420/000008042025000098/powl-20250630.htm. Q4 FY2025 $1.4 billion / $823.6 million: Form 10-K year ended 30 Sep 2025 https://www.sec.gov/Archives/edgar/data/80420/000008042025000152/powl-20250930.htm. Q1 FY2026 $1.6 billion / $933 million: Form 10-Q ended 31 Dec 2025 https://www.sec.gov/Archives/edgar/data/80420/000008042026000015/powl-20251231.htm. Q2 FY2026 $1.8 billion / $1.1 billion: Form 10-Q ended 31 Mar 2026 https://www.sec.gov/Archives/edgar/data/80420/000008042026000070/powl-20260331.htm. Q3 FY2026 $2.4 billion / $1.3 billion: Form 10-Q ended 30 Jun 2026 https://www.sec.gov/Archives/edgar/data/80420/000008042026000107/powl-20260630.htm.

Source: Powell Industries Form 10-Q/10-K remaining unsatisfied performance obligations (backlog) footnote; Exhibit 99.1 when it matches the rounded billion print. Later 10-Q/10-K tenths win over Exhibit 99.1 whole millions. Q3 FY2020 $532.2 million: Form 10-Q ended 30 Jun 2020 https://www.sec.gov/Archives/edgar/data/80420/000008042020000027/powl10-qq32020.htm. Q4 FY2020 $476.8 million: Form 10-K year ended 30 Sep 2020 https://www.sec.gov/Archives/edgar/data/80420/000008042020000036/powl-20200930.htm. Q1 FY2021 $464.9 million through Q1 FY2023 $679.8 million: same-period 10-Q/10-K RPO footnote (example Q3 FY2021 https://www.sec.gov/Archives/edgar/data/80420/000008042021000041/powl-20210630.htm). Q2 FY2023 $1.0 billion through Q3 FY2026 $2.4 billion: 10-Q/10-K footnote rounded billions. Q4 FY2024 $1.3 billion: Form 10-K year ended 30 Sep 2024 https://www.sec.gov/Archives/edgar/data/80420/000008042024000086/powl-20240930.htm. Q3 FY2026 $2.4 billion: Form 10-Q ended 30 Jun 2026 https://www.sec.gov/Archives/edgar/data/80420/000008042026000107/powl-20260630.htm and Exhibit 99.1 https://www.sec.gov/Archives/edgar/data/80420/000008042026000103/ex991-powlq3xfy2026earning.htm.

Source: Derived as quarterly new orders divided by quarterly revenues. Orders from Form 10-Q MD&A when tenths are printed, otherwise Exhibit 99.1. Q1-Q3 revenues from us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax quarterly duration facts. Q4 revenues are 10-K annual minus the same-FY nine-month 10-Q (the identity already used for Q4 FY2024 $275.063 million and Q4 FY2025 $297.983 million). Q3 FY2026 $934.2 / $311.740 million: Form 10-Q https://www.sec.gov/Archives/edgar/data/80420/000008042026000107/powl-20260630.htm. Book-to-bill definition: Exhibit 99.1 footnote (new orders divided by revenues recognized in the period).

Source: Powell Industries bookings net of cancellations and scope reductions. Prefer Form 10-Q MD&A tenths when printed (later 10-Q year-ago column wins). Q4 uses Exhibit 99.1 whole dollars when the 10-K does not print a quarterly tenths figure. Q4 FY2020 $57 million net: Exhibit 99.1 https://www.sec.gov/Archives/edgar/data/80420/000008042020000032/ex991-q420earningsrelease.htm. Q1 FY2020 $137.4 through Q3 FY2025 tenths: later 10-Q MD&A comparatives (example Q1 FY2026 10-Q https://www.sec.gov/Archives/edgar/data/80420/000008042026000015/powl-20251231.htm). Q4 FY2021 $121 million: Exhibit 99.1 https://www.sec.gov/Archives/edgar/data/80420/000008042021000043/ex991-q421earningsrelease.htm. Q4 FY2022 $259 million: Exhibit 99.1 https://www.sec.gov/Archives/edgar/data/80420/000008042022000034/ex991-q422earningsrelease.htm. Q4 FY2023 $171 million: Exhibit 99.1 https://www.sec.gov/Archives/edgar/data/80420/000008042023000047/ex991-powlq4xfy2023earning.htm. Q4 FY2024 $267 million: Exhibit 99.1 https://www.sec.gov/Archives/edgar/data/80420/000008042024000084/ex991-powlq4xfy2024earning.htm. Q4 FY2025 $271 million: Exhibit 99.1 https://www.sec.gov/Archives/edgar/data/80420/000008042025000145/ex991-powlq4xfy2025earning.htm. Q1 FY2026 $438.8 million: Form 10-Q ended 31 Dec 2025 https://www.sec.gov/Archives/edgar/data/80420/000008042026000015/powl-20251231.htm. Q2 FY2026 $489.7 million: Form 10-Q ended 31 Mar 2026 https://www.sec.gov/Archives/edgar/data/80420/000008042026000070/powl-20260331.htm. Q3 FY2026 $934.2 million: Form 10-Q ended 30 Jun 2026 https://www.sec.gov/Archives/edgar/data/80420/000008042026000107/powl-20260630.htm (Exhibit 99.1 printed $934 million the prior day).