Southern First director unloads 750 shares at $63

SOUTHERN FIRST BANCSHARES INC (SFST) director Leighton M. Cubbage reported two sales of common stock.

Rhea-AI Filing Summary

SOUTHERN FIRST BANCSHARES INC (SFST) director Leighton M. Cubbage reported two sales of common stock. On August 24, 2026, he sold 400 shares at $63.00 per share, and on August 25, 2026, he sold 350 shares at an average price of $63.0502 per share, both as direct, non-derivative transactions. Post-transaction share holdings are not stated.

Insider Trade Summary

Net Seller: 750 shares

Net Sell 2 txns

Insider CUBBAGE LEIGHTON M

Role Director

Sold 750 shs ($47K)

Type	Security	Shares	Price	Value
Sale	Common Stock	350	$63.0502	$22K
Sale	Common Stock	400	$63.00	$25K

Holdings After Transaction: Common Stock — 49,165 shares (Direct)

Key Figures

Shares sold on 2026-08-24: 400 shares of Common Stock Sale price on 2026-08-24: $63.00 per share Shares sold on 2026-08-25: 350 shares of Common Stock +2 more

5 metrics

Shares sold on 2026-08-24 400 shares of Common Stock Non-derivative sale by director Leighton M. Cubbage on August 24, 2026

Sale price on 2026-08-24 $63.00 per share Price for 400-share sale of Common Stock

Shares sold on 2026-08-25 350 shares of Common Stock Non-derivative sale by director Leighton M. Cubbage on August 25, 2026

Average sale price on 2026-08-25 $63.0502 per share Price for 350-share sale of Common Stock

Total shares sold 750 shares Sum of non-derivative Common Stock sales on August 24–25, 2026

Key Terms

non-derivative, open market or private transaction, direct or indirect

3 terms

non-derivative financial

"transaction_type": "non-derivative"

open market or private transaction financial

"transaction_code_description": "Sale in open market or private transaction"

direct or indirect financial

"direct_or_indirect": "D"

FAQ

What insider transactions did SFST director Leighton M. Cubbage report?

Leighton M. Cubbage reported selling a total of 750 shares of SOUTHERN FIRST BANCSHARES INC common stock in two transactions on August 24 and 25, 2026, at prices around $63 per share, in direct, non-derivative sales.

On what dates did the SFST insider sales occur and at what prices?

The reported SFST insider sales occurred on August 24, 2026, at $63.00 per share for 400 shares, and on August 25, 2026, at an average price of $63.0502 per share for 350 shares.

How many SFST shares did Leighton M. Cubbage sell in total?

Leighton M. Cubbage sold a total of 750 shares of SOUTHERN FIRST BANCSHARES INC common stock, consisting of 400 shares on August 24, 2026, and 350 shares on August 25, 2026, in direct, non-derivative transactions.

Were the reported SFST insider sales by Leighton M. Cubbage under a Rule 10b5-1 plan?

The filing indicates the Rule 10b5-1 checkbox is not affirmed (aff_10b5_one is false), meaning the transactions are not identified there as being conducted under an affirmed Rule 10b5-1 trading plan.

Are Leighton M. Cubbage’s holdings in SFST after these sales disclosed?

No. The filing’s transaction rows show the field for total shares following transaction as null for both sales, so his post-transaction SFST holdings are not provided in this data.

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

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Available on EDGAR 08/27/2026 - 01:31 PM Accepted by SEC EDGAR 08/27/2026 - 01:30 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)
08/24/2026

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	08/24/2026		S		400	D	$63	49,515	D
Common Stock	08/25/2026		S		350	D	$63.0502	49,165	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	08/27/2026
	** 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)