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    Southern Co 7.125% 2025 Series A Equity Units Due 12/15/2028
    Ticker Symbol: SOMN     CUSIP: 842587842     Exchange: NYSE
    Security Type:   Mandatory Convertible Security
    The 2025 Series A Equity Units were issued on 11/03/2025 and started trading temporarily on the Other OTC market 11/04/2025 under their "When Issued" ticker symbol STHNV. The shares are expected to start trading on the NYSE within 30 days of their issue date under their permanent ticker symbol of SOMN. For information on securities trading on the Other OTC, see our discussion on this subject on our What Income Investors Should Know page which can be found on our Information menu at the top of any page.

    QUANTUMONLINE.COM SECURITY DESCRIPTION:  Southern Co 2025 Series A Equity Units stated amount $50 per unit, initially consisting of Corporate Units which include a stock purchase contract and a a 1/40 undivided beneficial ownership interest in $1,000 principal amount of Series 2025B Remarketable Senior Notes due 2030 to be issued by the Company and a 1/40 undivided beneficial ownership interest in $1,000 principal amount of Series 2025C Remarketable Senior Notes due 2033.

    The stock purchase contract requires the holder to purchase for $50 a variable number of shares of Southern Co (NYSE:SO) common stock no later than 12/15/2028 and pays a contract adjustment rate of 2.975% per annum. The stock purchase settlement rate will be 0.4294 shares per unit if the then current market price is equal to or greater than $116.44 and 0.5368 shares per unit if the market price is equal to or less than $93.15. For market prices between those values the settlement rate will be $50 divided by the market value. Prior to the IPO of this security, the last reported sale price of the common stock on October 31, 2025 was $94.04 per share. The stock purchase contract may be settled any time at the holder’s option and the company will deliver 0.4294 shares of common stock for each purchase contract.

    The Corporate Units pay Interest distributions of 7.125% per annum ($(3.5625 per annum or $0.890625 per quarter) will be paid quarterly on 3/15, 6/15, 9/15 & 12/15 to holders of record on the record date that will be (__) (NOTE: the ex-dividend date is the record date).

    Distributions paid by these debt securities are interest and as such are NOT eligible for the preferential 15% to 20% tax rate on dividends and are also NOT eligible for the dividend received deduction for corporate holders.

    The Equity units include a 1/40 undivided beneficial ownership interest in $1,000 principal amount of 4.15% Series 2025B Remarketable Senior Notes due 2030 and a 1/40 undivided beneficial ownership interest in $1,000 principal amount of 4.15% Series 2025C Remarketable Senior Notes due 2033 is due December 15, 2033. Both the 2025B and 2025C Notes are subject to reset and remarketing in 2028. The Series 2025B Remarketable Senior Notes and the Series 2025C Remarketable Senior Notes are pledged as collateral to secure the holder's obligations under the stock purchase contract.

    The holder has the right at any time to convert the Corporate Units to Tresury Units by the substitution of a specified zero-coupon U.S. Treasury security for the Remarketable Senior Notes and to later recreate Corporate Units. The Equity units are unsecured and rank equally with the company's other unsecured senior indebtedness. See the IPO prospectus for extensive additional information on the equity units and their mandatory conversion provisions by clicking on the ‘Link to IPO Prospectus’ provided below.

    Stock
    Exchange
    Cpn Rate
    Ann Amt
    LiqPref
    CallPrice
    Call Date
    Matur Date
    Moodys/S&P
    Dated
    Conversion
    Shares@Price
    Distribution Dates 15%
    Tax Rate
    NYSE
    Chart
    7.13%
    $3.5625
    $50.00
    $50.00
    Not Callable
    12/15/2028
    NR NR
    11/04/2025
    0.4294@116.44+
    0.5368@93.15-
    3/15, 6/15, 9/15 & 12/15
    Click for MW ExDiv Date
    Click for Yahoo ExDiv Date
    No

    Go to Parent Company's Record (SO)

    IPO - 11/3/2025 - 25.00 Million Units @ $50.00/unit.    Link to IPO Prospectus
    Previous Ticker Symbol: STHNU    Changed: 11/12/2025

    Company's Online Information Links
    HOME PAGE:     https://www.southerncompany.com/
    Company's Investor Relations Information Go to Investor Relations Information
    Company's Online News Releases Go to News Releases
    Online Company Profile Go to Online Profile

    Company's Online SEC EDGAR Filings
    Company's SEC EDGAR Filings Go to SEC Filings

    Company's Email Address Links
    Email Address sagammil@southernco.com
    Email Contact Form on Website Go to Email Form

    Address and Phone Numbers
    Address:   30 Ivan Allen Jr. Boulevard, N.W., Atlanta, GA 30308
    Main Phone Number 404-506-5000
    Fax Number Not Available
    Investor Relations   Scott Gammill 404-506-0901
    Toll Free Phone Number 866-762-6411
    CEO - Chris Womack CFO - Pedro Cherry


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