Southern Co Upsizes Convertible Note Offering to $2.375B, Prices at Premiums of 12.5% and 27.5%
SO is trading near its 52-week low of $83.8 (11% above the low).
Summary
Southern Company priced $2.375 billion in convertible notes, upsized from $2.15 billion, with conversion premiums of 12.5% and 27.5% above the current stock price. Proceeds will refinance existing convertible debt and repay short-term borrowings.
Key Events · Financing and Capital Events · SO
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Offering Upsized to $2.375B
Series 2026A increased by $75M to $725M (2.125% coupon, due Dec 2027); Series 2026B increased by $150M to $1.65B (3.50% coupon, due Sep 2029). Total offering now $2.375B, with additional greenshoe options of up to $356.25M.
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Conversion Premiums Set Above Market
Series 2026A convertible at ~$104.56/share (12.5% premium to last sale); Series 2026B at ~$118.50/share (27.5% premium). Both above today's $92.83 stock price, indicating strong institutional demand.
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Proceeds to Refinance Existing Debt
Approximately $403M of net proceeds will repurchase ~$369M of Series 2024A 4.50% Convertible Notes due 2027. Remaining ~$1.95B will repay short-term debt and for general corporate purposes.
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Potential Dilution if Converted
At initial conversion rates, Series 2026A represents ~6.9M shares (9.5641 per $1,000) and Series 2026B ~13.9M shares (8.4389 per $1,000), totaling ~20.8M shares or roughly 1.9% of outstanding common stock.
Analysis · SO · Energy & Transportation
Southern Company upsized its convertible note offering by $225 million to $2.375 billion and set conversion prices at significant premiums to the current stock price — $104.56 and $118.50 versus today's $92.83. The deal refinances expensive 2024 convertible debt and pays down short-term borrowings, extending maturities to 2027 and 2029. The premium pricing signals strong institutional demand, but the sheer size — roughly 2.2% of the company's market cap in potential dilution if fully converted — makes this a material capital event. The concurrent repurchase of $369 million of existing 2024 notes reduces near-term dilution risk from that series.
At the time of this filing, SO was trading at $92.83 on NYSE in the Energy & Transportation sector, with a market capitalization of approximately $106.9B. The 52-week trading range was $83.80 to $100.84. This filing was assessed with neutral market sentiment and an importance score of 8 out of 10.