Southern First director sells 2,165 shares

SOUTHERN FIRST BANCSHARES INC (SFST) director Leighton M. Cubbage reported selling a total of 2,165 shares of common stock in a series of open market or private transactions from September 1 to September 3, 2026, at prices between $60.75 and $62.79 per share.

Rhea-AI Filing Summary

SOUTHERN FIRST BANCSHARES INC (SFST) director Leighton M. Cubbage reported selling a total of 2,165 shares of common stock in a series of open market or private transactions from September 1 to September 3, 2026, at prices between $60.75 and $62.79 per share. No Rule 10b5-1 trading plan is indicated, and post-transaction holdings are not reported in this filing.

Insider Trade Summary

Net Seller: 2,165 shares

Net Sell 5 txns

Insider CUBBAGE LEIGHTON M

Role Director

Sold 2,165 shs ($134K)

Type	Security	Shares	Price	Value
Sale	Common Stock	500	$62.79	$31K
Sale	Common Stock	300	$62.50	$19K
Sale	Common Stock	400	$62.40	$25K
Sale	Common Stock	500	$62.00	$31K
Sale	Common Stock	465	$60.75	$28K

Holdings After Transaction: Common Stock — 46,600 shares (Direct)

Key Figures

Total shares sold: 2,165 shares Sale on September 3, 2026: 500 shares at $62.79 per share Sales on September 2, 2026 (1): 300 shares at $62.50 per share +3 more

6 metrics

Total shares sold 2,165 shares Aggregate common stock sales reported for September 1–3, 2026

Sale on September 3, 2026 500 shares at $62.79 per share Common stock sale by director, open market or private transaction

Sales on September 2, 2026 (1) 300 shares at $62.50 per share Common stock sale by director, open market or private transaction

Sales on September 2, 2026 (2) 400 shares at $62.40 per share Common stock sale by director, open market or private transaction

Sales on September 2, 2026 (3) 500 shares at $62.00 per share Common stock sale by director, open market or private transaction

Sale on September 1, 2026 465 shares at $60.75 per share Common stock sale by director, open market or private transaction

Key Terms

open market or private transaction, Rule 10b5-1, Form 4

3 terms

open market or private transaction market

"Sale in open market or private transaction"

Rule 10b5-1 regulatory

"Rule 10b5-1 checkbox is not affirmed for these transactions"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

Form 4 regulatory

"reported in this Form 4 insider transaction filing"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

What insider activity did SFST report in this Form 4?

SFST reported that director Leighton M. Cubbage sold a total of 2,165 common shares in multiple open market or private transactions between September 1 and 3, 2026.

At what prices did the SFST director sell shares?

The reported sales occurred at prices between $60.75 and $62.79 per share, with individual transactions at $60.75, $62.00, $62.40, $62.50, and $62.79.

How many SFST shares did the director sell on each date?

On September 1, 2026, 465 shares were sold. On September 2, 2026, three sales totaled 1,200 shares. On September 3, 2026, 500 shares were sold, for an aggregate of 2,165 shares.

Was a Rule 10b5-1 trading plan disclosed for these SFST transactions?

No. The Form 4 indicates that the Rule 10b5-1 checkbox is not affirmed, and there is no footnote stating that the transactions were made under a Rule 10b5-1 trading plan.

What is the role of the person selling SFST shares?

The reporting person, Leighton M. Cubbage, is identified as a director of SOUTHERN FIRST BANCSHARES INC in this Form 4.

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Available on EDGAR 09/03/2026 - 04:55 PM Accepted by SEC EDGAR 09/03/2026 - 04:36 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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^*

CUBBAGE LEIGHTON M

(Last) (First) (Middle)

P.O. BOX 17465

(Street)

GREENVILLE SOUTH CAROLINA 29606

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
SOUTHERN FIRST BANCSHARES INC [ SFST ]

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

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026

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

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/01/2026		S		465	D	$60.75	48,300	D
Common Stock	09/02/2026		S		300	D	$62.5	48,000	D
Common Stock	09/02/2026		S		400	D	$62.4	47,600	D
Common Stock	09/02/2026		S		500	D	$62	47,100	D
Common Stock	09/03/2026		S		500	D	$62.79	46,600	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	Leighton M. Cubbage /s/Julie A. Fairchild, POA	09/03/2026
	** 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 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)