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  4. [144] SOUTHERN CO SEC Filing

Southern Co officer to sell 100 shares worth 8,845

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
144

Rhea-AI Filing Summary

SOUTHERN CO (SO) reported that officer Matthew Kim filed a notice of proposed sale of restricted securities under Rule 144. The notice covers 100 shares of common stock of The Southern Company, with an aggregate market value of 8,845, to be sold through Merrill Lynch on or after September 1, 2026 on the NYSE. The shares relate to a February 27, 2024 performance stock vest, described as a compensatory payment. The notice also lists prior 100‑share sales in each of the past three months.

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Shares to be sold 100 shares of common stock Proposed Rule 144 sale by officer Matthew Kim
Aggregate market value of proposed sale 8,845 Value for the 100 shares to be sold under Rule 144
Proposed sale date 09/01/2026 Intended date of Rule 144 sale on the NYSE
Performance stock vest date 02/27/2024 Source of shares described as performance stock vest compensatory payment
Past sale on 06/01/2026 100 shares; 9,116 aggregate value Common stock sale by Matthew Kim in prior 3 months
Past sale on 07/01/2026 100 shares; 9,577 aggregate value Common stock sale by Matthew Kim in prior 3 months
Past sale on 08/03/2026 100 shares; 9,428 aggregate value Common stock sale by Matthew Kim in prior 3 months
Rule 144 regulatory
"See the definition of "person" in paragraph (a) of Rule 144."
Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.
aggregate market value financial
"COMMON | ... | 100 | 8845 | ..."
Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.
performance stock vest financial
"COMMON | 02/27/2024 | PERFORMANCE STOCK VEST | THE SOUTHERN COMPANY"
compensatory payment financial
"100 | 02/27/2024 | COMPENSATORY PAYMENT"

FAQ

What does Southern Company (SO) disclose in this Form 144 filing?
The filing discloses that officer Matthew Kim intends to sell 100 shares of Southern Company common stock under Rule 144, with an aggregate market value of 8,845, through Merrill Lynch on or after September 1, 2026 on the NYSE.

How many Southern Company (SO) shares are covered by Matthew Kim’s proposed Rule 144 sale?
The proposed Rule 144 sale covers 100 shares of Southern Company common stock, with an aggregate market value reported as 8,845 for this transaction.

What is the source of the Southern Company (SO) shares Matthew Kim plans to sell?
The 100 Southern Company shares relate to a February 27, 2024 performance stock vest, characterized in the filing as a compensatory payment from The Southern Company.

On which exchange will Matthew Kim’s Southern Company (SO) shares be sold?
The filing states that the 100 Southern Company common shares are expected to be sold on the NYSE, with Merrill Lynch listed as the broker handling the transaction.

What Southern Company (SO) share sales has Matthew Kim made in the past 3 months?
Over the past 3 months, Matthew Kim sold 100 shares of Southern Company common stock on June 1, 2026 for 9,116, July 1, 2026 for 9,577, and August 3, 2026 for 9,428 in aggregate market value.

Who is the insider involved in this Southern Company (SO) Form 144 filing?
The insider named in the filing is Matthew Kim, identified as an officer of The Southern Company, who has filed notice to sell 100 shares of common stock under Rule 144.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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144: Filer Information

144: Issuer Information

144: Securities Information



Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold


* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.



Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

144: Remarks and Signature

Source: View Original Filing on SEC EDGAR