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Insider / SOUTHERN CO

Kim Matthew M.

Comptroller at SOUTHERN CO

Company
SOUTHERN CO
Ticker
SO
First filing on record
February 3, 2026
Latest trade on record
October 1, 2026
SEC filings
EDGAR ↗

Kim Matthew M., Comptroller at SOUTHERN CO, has disclosed 24 transactions in SO since February 3, 2026: 0 purchases (0 open-market buys) and 13 sales, worth about $902K at the reported prices. The latest was filed October 1, 2026, 0 days after the trade.

Last updated October 1, 2026 · Source: SEC EDGAR Form 4 filings

Transactions
24
Open-market buys
0
Sales
13
Avg. disclosure lag
1.9d

Trading in charts

Trade timeline

When does this person trade, how big, and in which direction? Every trade in the last 12 months.

Bought (above the line)Sold (below the line)Other transaction
Oct 25NovDecJan 26FebMarAprMayJunJulAugSep
Oct 25NovDecJan 26FebMarAprMayJunJulAugSep

In the last 12 months Kim Matthew M. made no purchases and 13 sales worth $902K, plus 11 other transactions. Dot size is the dollar amount.

Portfolio mix

Which stocks does this person trade most? Tile size is dollars traded, all time on record.

SO$902K
SO$902K

Kim Matthew M. has traded 1 stock on record; the largest by dollars is SO.

Reporting lag

Does this person report on time? One bar per filing against the Form 4 deadline.

On timeLate
Form 4 deadlineoldest filingnewest

0 of 12 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).

What kind of transactions

Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.

Rows by Form 4 transaction code
CodeMeaningRowsSharesValue
MOption exercise or conversion102,044—
SOpen-market sale87,123$667K
FShares withheld for tax52,585$235K
AGrant or award14,450—
Rows by year of the trade
YearRowsBoughtSold
202624013 · $902K

Transactions

Download SO trades (CSV)253 rows · 79 KB · every filer in this ticker, this insider included · all downloads

SecuritySideTrade dateDisclosedLagSharesPriceValueFlagsSourceShare
SOSell SOctober 1, 2026October 1, 20260d100$83$8,27310b5-1 planForm 4 ↗
SOSell SSeptember 3, 2026September 4, 20261d1,400$89$124KForm 4 ↗
SOSell SSeptember 1, 2026September 3, 20262d100$88$8,84510b5-1 planForm 4 ↗
SOSell SAugust 3, 2026August 4, 20261d100$94$9,42810b5-1 planForm 4 ↗
SOSell SJuly 1, 2026July 2, 20261d100$96$9,57710b5-1 planForm 4 ↗
SOSell SJune 1, 2026June 1, 20260d100$91$9,11610b5-1 planForm 4 ↗
SOSell SMay 1, 2026May 4, 20263d100$97$9,65710b5-1 planForm 4 ↗
SOOption / conversion MApril 1, 2026April 2, 20261d42——derivativeForm 4 ↗
SOOption / conversion MApril 1, 2026April 2, 20261d23——derivativeForm 4 ↗
SOOption / conversion MApril 1, 2026April 2, 20261d13——derivativeForm 4 ↗
SOSell FApril 1, 2026April 2, 20261d82$97$7,949Form 4 ↗
SOOption / conversion MApril 1, 2026April 2, 20261d82——Form 4 ↗
SOSell SFebruary 24, 2026February 25, 20261d5,123$95$487K10b5-1 planForm 4 ↗
SOSell FFebruary 11, 2026February 13, 20262d2,014$91$183KForm 4 ↗
SOOther AFebruary 11, 2026February 13, 20262d4,450——Form 4 ↗
SOOption / conversion MFebruary 5, 2026February 9, 20264d282——derivativeForm 4 ↗
SOSell FFebruary 5, 2026February 9, 20264d146$91$13KForm 4 ↗
SOOption / conversion MFebruary 5, 2026February 9, 20264d292——Form 4 ↗
SOOption / conversion MFebruary 1, 2026February 3, 20262d308——derivativeForm 4 ↗
SOOption / conversion MJanuary 31, 2026February 3, 20263d317——derivativeForm 4 ↗
SOSell FFebruary 1, 2026February 3, 20262d173$89$15KForm 4 ↗
SOOption / conversion MFebruary 1, 2026February 3, 20262d345——Form 4 ↗
SOSell FJanuary 31, 2026February 3, 20263d170$89$15KForm 4 ↗
SOOption / conversion MJanuary 31, 2026February 3, 20263d340——Form 4 ↗

Filings

FiledFormAccessionRowsStatusSource
October 1, 2026Form 40001193125-26-4106271publishedEDGAR ↗
September 4, 2026Form 40001193125-26-3833001publishedEDGAR ↗
September 3, 2026Form 40001193125-26-3811931publishedEDGAR ↗
August 4, 2026Form 40001193125-26-3318351publishedEDGAR ↗
July 2, 2026Form 40001193125-26-2941141publishedEDGAR ↗
June 1, 2026Form 40001193125-26-2513581publishedEDGAR ↗
May 4, 2026Form 40001193125-26-2037961publishedEDGAR ↗
April 2, 2026Form 40001193125-26-1402655publishedEDGAR ↗
February 25, 2026Form 40001193125-26-0717781publishedEDGAR ↗
February 13, 2026Form 40001193125-26-0512092publishedEDGAR ↗
February 9, 2026Form 40001193125-26-0419863publishedEDGAR ↗
February 3, 2026Form 40001193125-26-0360306publishedEDGAR ↗

Other insiders at SOUTHERN CO

Everyone on file, with contracts and lobbying under the company's name: SOUTHERN CO.

Guides for this page

Sources and method

Official sources behind this page
SourceFilingsRowsFirst filedNewest filedRead the originals
SEC EDGAR, Form 41224February 3, 2026October 1, 2026Form 4 list on EDGAR

Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.

Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.

Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.