SEC FORM 3

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Tucker Daniel S

(Last)

(First)

(Middle)

30 IVAN ALLEN JR BLVD NW

(Street)

ATLANTA

30308

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
09/01/2021

3. Issuer Name and Ticker or Trading Symbol
SOUTHERN CO [ SO ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Executive Vice President & CFO

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Southern Company Common Stock	30,449	D
Southern Company Common Stock	3,034.8258	I	401(K)
Southern Company Common Stock	675.7477	I	By Wife's 401(K)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Phantom Stock Units⁽¹⁾	⁽¹⁾	⁽¹⁾	Southern Company Common Stock	3,867.2084	$0.00	D
Southern Co Restricted Stock Units⁽²⁾	⁽²⁾	⁽²⁾	Southern Company Common Stock	581	$0.00	D
Southern Co Restricted Stock Units⁽³⁾	⁽³⁾	⁽³⁾	Southern Company Common Stock	831	$0.00	D
Southern Co Restricted Stock Units⁽⁴⁾	⁽⁴⁾	⁽⁴⁾	Southern Company Common Stock	1,506	$0.00	D
Southern Co. Performance Stock Units Holding⁽⁵⁾	⁽⁵⁾	⁽⁵⁾	Southern Company Common Stock	4,069	$0.00	D
Southern Co. Performance Stock Units Holding⁽⁶⁾	⁽⁶⁾	⁽⁶⁾	Southern Company Common Stock	2,910	$0.00	D
Southern Co. Performance Stock Units Holding⁽⁷⁾	⁽⁷⁾	⁽⁷⁾	Southern Company Common Stock	3,514	$0.00	D

Explanation of Responses:

1. Acquired on various dates between January 11, 2013 and August 27, 2021 pursuant to Southern deferred compensation plan, at prices ranging from $40.12 to $70.40 per unit, payable in cash only upon termination.

2. Represents restricted stock units granted on February 11, 2019. The remaining 1/3 of the award will vest in 2022. Each restricted stock unit represents the right to receive, at statement, one share of common stock.

3. Represents restricted stock units granted on February 11, 2020. The remaining award will vest 1/3 in 2022 and 1/3 in 2023. Each restricted stock unit represents the right to receive, at statement, one share of common stock.

4. Restricted stock granted on February 3, 2021. The awards will vest one-third per year on the first, second and third anniversary of grant date. Each restricted stock unit represents the right to receive, at statement, one share of common stock.

5. Performance share units granted on February 11, 2019. The award has a three year performance period and will vest on December 31, 2021. PSUs will convert to shares of Common Stock based on achievement of specific performance measures.

6. Performance share units granted on February 11, 2020. The award has a three year performance period and will vest on December 31, 2022. PSUs will convert to shares of Common Stock based on achievement of specific performance measures.

7. Performance share units granted on February 3, 2021. The award has a three year performance period and will vest on December 31, 2023. PSUs will convert to shares of Common Stock based on achievement of specific performance measures.

Remarks:

	/s/ Marcia R. DeMar, Attorney-in-Fact for Daniel S. Tucker	09/13/2021
	** Signature of Reporting Person	Date
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 5 (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.