STOCK TITAN

Southern Company (SO) director earns new deferred stock unit grant as Board retainer

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

GRAIN DAVID J reported acquisition or exercise transactions in this Form 4 filing.

Southern Company director David J. Grain received a grant of 838.1473 deferred stock units tied to Southern Company common stock as director compensation. The units, valued at $96.94 per unit for reporting purposes, were credited under the company’s 2021 Equity and Incentive Compensation Plan and deferred into the Deferred Compensation Plan for Outside Directors.

Following this grant and related dividend reinvestment credits, Grain holds a total of 85,316.8599 deferred stock units. Each unit represents the right to receive one share of Southern Company common stock, to be settled in shares after his Board service ends. The award is a non‑cash, routine compensation grant rather than an open‑market stock purchase or sale.

Positive

  • None.

Negative

  • None.
Insider GRAIN DAVID J
Role Director
Type Security Shares Price Value
Grant/Award Deferred Stock Units Holding 838.147 $96.94 $81K
Holdings After Transaction: Deferred Stock Units Holding — 85,316.86 shares (Direct)
Footnotes (1)
  1. Represents quarterly director cash and equity retainers paid under the Southern Company 2021 Equity and Incentive Compensation Plan and deferred pursuant to the Deferred Compensation Plan for Outside Directors of The Southern Company (Deferred Compensation Plan). Each deferred stock unit represents the right to receive one share of Southern Company common stock. Deferred stock units are settled in shares of Southern Company common stock on the date(s) following the termination of the reporting person's service on the Board as specified by the reporting person pursuant to the Deferred Compensation Plan. There is no exercise or expiration date. Includes additional deferred stock units acquired through the dividend reinvestment feature of the Deferred Compensation Plan.
Deferred stock units granted 838.1473 units Director compensation grant on 2026-04-01
Reporting value per unit $96.94 per unit Value used for the deferred stock unit grant
Deferred units after transaction 85,316.8599 units Total deferred stock units held following the grant
Conversion price $0.00 Deferred stock units settle into common shares without exercise price
Underlying security units 838.1473 shares Each deferred unit corresponds to one Southern Company common share
Deferred Stock Units financial
"Represents quarterly director cash and equity retainers paid ... deferred stock units..."
Deferred stock units are promises from a company to give an employee shares of stock at a future date, often after certain conditions are met or after leaving the company. They function like a form of delayed compensation, allowing employees to earn shares over time. For investors, they represent potential future ownership in the company, but do not provide immediate voting rights or dividends until the shares are actually received.
Southern Company 2021 Equity and Incentive Compensation Plan financial
"paid under the Southern Company 2021 Equity and Incentive Compensation Plan..."
Deferred Compensation Plan for Outside Directors financial
"deferred pursuant to the Deferred Compensation Plan for Outside Directors of The Southern Company..."
dividend reinvestment feature financial
"Includes additional deferred stock units acquired through the dividend reinvestment feature..."
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
GRAIN DAVID J

(Last)(First)(Middle)
30 IVAN ALLEN JR. BLVD., NW

(Street)
ATLANTA GEORGIA 30308

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
SOUTHERN CO [ SO ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Deferred Stock Units Holding(1)$004/01/2026A838.1473 (2) (2)Southern Company Common Stock838.1473$96.9485,316.8599(3)D
Explanation of Responses:
1. Represents quarterly director cash and equity retainers paid under the Southern Company 2021 Equity and Incentive Compensation Plan and deferred pursuant to the Deferred Compensation Plan for Outside Directors of The Southern Company (Deferred Compensation Plan). Each deferred stock unit represents the right to receive one share of Southern Company common stock.
2. Deferred stock units are settled in shares of Southern Company common stock on the date(s) following the termination of the reporting person's service on the Board as specified by the reporting person pursuant to the Deferred Compensation Plan. There is no exercise or expiration date.
3. Includes additional deferred stock units acquired through the dividend reinvestment feature of the Deferred Compensation Plan.
/s/ Brittney Anderson, Attorney-in-Fact for David J. Grain04/02/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Southern Company (SO) director David J. Grain report?

David J. Grain reported receiving 838.1473 deferred stock units as director compensation. These units are credited under Southern Company’s 2021 Equity and Incentive Compensation Plan and deferred, rather than bought on the open market, as part of his regular Board retainers.

How many Southern Company (SO) deferred stock units does David J. Grain now hold?

After the latest grant, David J. Grain holds 85,316.8599 deferred stock units. Each unit represents the right to receive one share of Southern Company common stock, generally delivered after his service on the Board ends under the Deferred Compensation Plan.

Is David J. Grain’s Form 4 transaction in Southern Company (SO) an open-market stock purchase?

No, the Form 4 shows a grant of deferred stock units as compensation, not an open-market purchase. The units were credited under Southern Company’s equity and incentive plan and deferred into the directors’ compensation plan instead of being bought for cash in the market.

When will David J. Grain receive Southern Company (SO) shares for these deferred stock units?

The deferred stock units are settled in Southern Company common shares after Grain’s Board service ends, on dates he specified under the Deferred Compensation Plan. There is no traditional exercise or expiration date; settlement timing follows his service termination and prior elections.

What does a deferred stock unit mean for Southern Company (SO) directors?

A deferred stock unit gives a director the right to receive one share of Southern Company common stock in the future. Units are often granted as part of retainers, can accumulate via dividend reinvestment, and are typically settled in shares after the director leaves the Board.

How were dividends handled on David J. Grain’s Southern Company (SO) deferred units?

Some of Grain’s deferred stock units were acquired through the plan’s dividend reinvestment feature. Instead of receiving cash dividends, additional deferred units are credited, increasing his total future share entitlement under the Deferred Compensation Plan for Outside Directors.