Southern First CEO sells 21,000 shares after exercises

Southern First Bancshares Chief Executive Officer R. Arthur Seaver Jr. reported multiple equity transactions on August 12, 2026.

Rhea-AI Filing Summary

Southern First Bancshares Chief Executive Officer R. Arthur Seaver Jr. reported multiple equity transactions on August 12, 2026. He exercised stock options covering 10,429 shares of common stock at exercise prices between $32.32 and $42.80 per share, from grants that vest equally over four years. On the same date, he sold 21,000 shares of common stock at prices between $63.00 and $64.00 per share.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 13 txns

Insider SEAVER R ARTHUR JR

Role Chief Executive Officer

Sold 21,000 shs ($1.34M)

Approx. gross sale proceeds $1.34M

Approx. exercise cost $411K

Type	Security	Shares	Price	Value
Exercise	Stock Options (Right to Buy) F1	2,903	$0.00	$0.00
Exercise	Stock Options (Right to Buy) F1	2,827	$0.00	$0.00
Exercise	Stock Options (Right to Buy) F1	2,254	$0.00	$0.00
Exercise	Stock Options (Right to Buy) F2	2,445	$0.00	$0.00
Sale	Common Stock	5,000	$63.00	$315K
Sale	Common Stock	5,000	$63.50	$318K
Sale	Common Stock	6,000	$64.00	$384K
Sale	Common Stock	500	$64.00	$32K
Sale	Common Stock	4,500	$63.75	$287K
Exercise	Common Stock	2,903	$39.45	$115K
Exercise	Common Stock	2,827	$42.72	$121K
Exercise	Common Stock	2,254	$42.80	$96K
Exercise	Common Stock	2,445	$32.32	$79K

Holdings After Transaction: Stock Options (Right to Buy) — 28,571 contracts (Direct); Common Stock — 92,026 shares (Direct)

Footnotes (2)

1. F1. Stock options vest equally over four years.
2. F2. Stock Options vest equally over four years.

Key Figures

Shares sold: 21,000 shares Sale prices: $63.00–$64.00 per share Options exercised: 10,429 shares +2 more

5 metrics

Shares sold 21,000 shares Total common shares sold by the CEO on 2026-08-12

Sale prices $63.00–$64.00 per share Per-share prices for reported common stock sales

Options exercised 10,429 shares Total underlying common shares from option exercises on 2026-08-12

Option exercise prices $32.32, $39.45, $42.72, $42.80 Per-share exercise prices of stock options converted to common stock

Vesting schedule 4 years Stock options vest equally over four years per footnotes

Key Terms

Stock Options (Right to Buy), derivative security, exercise price, vest equally over four years

4 terms

Stock Options (Right to Buy) financial

"security_title: Stock Options (Right to Buy)"

derivative security financial

"transaction_code_description: Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

exercise price financial

"conversion_or_exercise_price: 39.4500"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

vest equally over four years financial

"Stock options vest equally over four years."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did the SFST CEO report in this Form 4 transaction?

The SFST CEO, R. Arthur Seaver Jr., reported exercising stock options for 10,429 shares and selling 21,000 shares of Southern First Bancshares common stock on August 12, 2026.

How many Southern First Bancshares (SFST) shares did the CEO sell?

The CEO sold a total of 21,000 shares of Southern First Bancshares common stock. These sales occurred in several trades at per-share prices between $63.00 and $64.00.

At what prices were the SFST shares sold by the CEO?

The reported sales were executed at per-share prices of $63.00, $63.50, $63.75, and $64.00. These trades together covered 21,000 shares of Southern First Bancshares common stock.

How many stock options did the SFST CEO exercise in this filing?

The CEO exercised stock options covering 10,429 shares of Southern First Bancshares common stock. The underlying option grants had exercise prices ranging from $32.32 to $42.80 per share.

What were the exercise prices of the SFST options exercised by the CEO?

The exercised stock options carried exercise prices of $32.32, $39.45, $42.72, and $42.80 per share. Each option award relates to common stock and vests equally over four years.

Do the SFST CEO’s stock options mentioned in the Form 4 have a vesting schedule?

Yes. Footnotes state that the reported stock options vest equally over four years. This vesting description applies to the option grants associated with the derivative transactions reported in the Form 4.

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

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Available on EDGAR 08/13/2026 - 12:06 PM Accepted by SEC EDGAR 08/13/2026 - 12:06 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^*

SEAVER R ARTHUR JR

(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
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/12/2026

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	08/12/2026		S		5,000	D	$63	97,597	D
Common Stock	08/12/2026		S		5,000	D	$63.5	92,597	D
Common Stock	08/12/2026		S		6,000	D	$64	86,597	D
Common Stock	08/12/2026		S		500	D	$64	86,097	D
Common Stock	08/12/2026		S		4,500	D	$63.75	81,597	D
Common Stock	08/12/2026		M		2,903	A	$39.45	84,500	D
Common Stock	08/12/2026		M		2,827	A	$42.72	87,327	D
Common Stock	08/12/2026		M		2,254	A	$42.8	89,581	D
Common Stock	08/12/2026		M		2,445	A	$32.32	92,026	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
Stock Options (Right to Buy)	$39.45	08/12/2026		M			2,903	01/19/2022(1)	01/19/2031	Common Stock	2,903	$0	12,097	D
Stock Options (Right to Buy)	$42.72	08/12/2026		M			2,827	01/21/2021(1)	01/21/2030	Common Stock	2,827	$0	5,173	D
Stock Options (Right to Buy)	$42.8	08/12/2026		M			2,254	01/16/2019(1)	01/16/2028	Common Stock	2,254	$0	5,746	D
Stock Options (Right to Buy)	$32.32	08/12/2026		M			2,445	01/15/2020(2)	01/15/2029	Common Stock	2,445	$0	5,555	D

Explanation of Responses:

1. Stock options vest equally over four years.

2. Stock Options vest equally over four years.

	R. Arthur Seaver, Jr. /s/Julie A. Fairchild, POA	08/13/2026
	** 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)