What is the primary purpose of this 8-K filing?

The primary purpose of this 8-K filing is to announce Southern Company's financial results for the three-month period ended March 31, 2026, and to furnish investors with a press release containing these results and related financial information.

What are non-GAAP financial measures and why does Southern Company use them?

Non-GAAP financial measures are financial metrics that exclude or include amounts different from the nearest U.S. GAAP-defined financial metrics. Southern Company uses them to provide investors with additional information to evaluate the performance of its ongoing business activities, as management believes these measures offer a clearer perspective on operational performance by removing certain unusual or non-recurring items.

What specific items are excluded from the non-GAAP earnings calculations?

The excluded items vary by period. For the three-month period ended March 31, 2026, they include accelerated depreciation related to wind facility repowering at Southern Power, debt extinguishment costs at Southern Company, and an estimated loss from disallowed capital investments at Southern Company Gas. For the three-month period ended March 31, 2025, excluded items related to plants under construction.

Where can I find the detailed financial information and reconciliations?

Detailed financial information, including segment data and reconciliations of non-GAAP measures to GAAP, is available in Exhibit 99, which is the press release furnished with this 8-K filing.

SOUTHERN CO 8-K: Earnings & Results

Summary

Southern Company (SO) has filed an 8-K report on April 30, 2026, providing an update on its financial results for the three-month period ended March 31, 2026. The report primarily directs investors to an attached press release (Exhibit 99) which details both Generally Accepted Accounting Principles (GAAP) and non-GAAP financial measures. The company emphasizes that these non-GAAP measures offer investors additional insight into the performance of its ongoing business activities by excluding certain items. Key adjustments to GAAP earnings include items related to accelerated depreciation at Southern Power, debt extinguishment costs and an estimated disallowance of capital investments at Southern Company Gas, and charges/credits associated with plants under construction for the prior year's comparable period. Investors should carefully review the reconciliations provided in Exhibit 99 to understand the nature and impact of these exclusions on the reported financial performance.

Key Highlights

1Southern Company issued an 8-K filing on April 30, 2026, reporting financial results for the first quarter ended March 31, 2026.
2The filing directs investors to an accompanying press release (Exhibit 99) for detailed financial information.
3Both GAAP and non-GAAP financial measures are presented in the press release.
4Non-GAAP measures exclude specific items to provide a view of ongoing business performance.
5Excluded items include accelerated depreciation at Southern Power, debt extinguishment costs, and disallowances of capital investments at Southern Company Gas.
6Prior year comparable periods exclude charges/credits related to plants under construction.
7Exhibit 99 also includes business segment information for key subsidiaries: Alabama Power, Georgia Power, Mississippi Power, Southern Power, and Southern Company Gas.

SOUTHERN CO 8-K Report, Financial Results (Apr 30, 2026)

Summary

Key Highlights

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