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| Period | Revenue | YoY | Gross margin | Operating income | Net income | YoY | EPS | Op. cash flow | Capex | Free cash flow | Filed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Q1 2026 · Mar 31 | $1.2B | +5.0% | 86.6% | $249M | $224M | +5.2% | 0.87 | $368M | $342M | $26M | May 1 |
| Q4 2025 · Dec 31derived | $1.1B | +9.0% | 85.8% | $197M | $142M | −5.3% | 0.55 | $269M | — | — | Feb 20 |
| Q3 2025 · Sep 30 | $1.2B | +11.9% | 86.3% | $349M | $281M | −4.7% | 1.09 | $408M | $511M | −$103M | Nov 7 |
| Q2 2025 · Jun 30 | $961M | +7.5% | 84.3% | $223M | $174M | +100.0% | 0.68 | $243M | $422M | −$179M | Aug 8 |
| Q1 2025 · Mar 31 | $1.1B | +9.4% | 86.0% | $257M | $213M | +34.8% | 0.83 | $249M | $554M | −$305M | May 1 |
| Q4 2024 · Dec 31derived | $976M | +1.6% | 84.7% | $221M | $150M | +24.0% | 0.59 | $254M | — | — | Feb 20 |
| Q3 2024 · Sep 30 | $1.1B | +0.4% | 84.7% | $313M | $295M | +13.9% | 1.15 | $351M | $410M | −$59M | Nov 7 |
| Q2 2024 · Jun 30 | $894M | −2.0% | 83.6% | $130M | $87M | −45.6% | 0.34 | $255M | $392M | −$137M | Aug 8 |
| Q1 2024 · Mar 31 | $1B | — | 85.3% | $222M | $158M | — | 0.62 | $307M | $478M | −$171M | May 9 |
| Q4 2023 · Dec 31derived | $961M | — | 84.9% | $183M | $121M | — | 0.47 | $245M | — | — | Feb 20 |
| Q3 2023 · Sep 30 | $1.1B | — | 85.7% | $322M | $259M | — | 1.02 | $311M | $443M | −$132M | Nov 1 |
| Q2 2023 · Jun 30 | $912M | — | 84.9% | $217M | $160M | — | 0.64 | $123M | $341M | −$218M | Aug 2 |
| Year | Revenue | Gross margin | Operating income | Net income | Net margin | EPS | Op. cash flow | Capex | Free cash flow | Buybacks | Dividends paid |
|---|---|---|---|---|---|---|---|---|---|---|---|
| FY2025 · to Dec 31 | $4.4B | 85.7% | $1B | $810M | 18.6% | 3.14 | $1.2B | — | — | — | $521M |
| FY2024 · to Dec 31 | $4B | 84.6% | $886M | $690M | 17.3% | 2.69 | $1.2B | — | — | — | $492M |
| FY2023 · to Dec 31 | $4B | 85.5% | $943M | $703M | 17.5% | 2.78 | $867M | — | — | — | $456M |
| FY2022 · to Dec 31 | $4.2B | 86.4% | $928M | $686M | 16.3% | 2.73 | $486M | $1.5B | −$998M | — | $428M |
| FY2021 · to Dec 31 | $3.7B | 85.4% | $795M | $674M | 18.4% | 2.63 | $582M | $1.2B | −$587M | — | $403M |
| FY2020 · to Dec 31 | $3.4B | 86.9% | $740M | $624M | 18.3% | 2.47 | $501M | $1.4B | −$865M | — | $377M |
Every number comes from ALLIANT ENERGY CORP's own XBRL-tagged filings with the SEC, not a data vendor. Quarters marked derived are the fiscal year minus the three reported quarters, the same way every data provider computes Q4. Restated figures replace originals as later filings arrive.