CoastalSouth (COSO) CAO granted 4,000 restricted stock units

Rhea-AI Filing Summary

CoastalSouth Bancshares, Inc. reported that its Chief Accounting Officer, Lauren M. Hemby, received a grant of 4,000 restricted stock units (RSUs) on February 11, 2026. These RSUs are a form of equity compensation that convert into common stock on a one-for-one basis.

The award vests in three annual installments: 33.3% on February 11, 2027, 33.3% on February 11, 2028, and 33.4% on February 11, 2029. Following this grant, Hemby directly holds 4,000 RSUs, aligning her interests more closely with shareholders over the multi-year vesting period.

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
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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^*

Hemby Lauren M.

(Last) (First) (Middle)

400 GALLERIA PARKWAY

SUITE 1900

(Street)

ATLANTA GA 30339

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CoastalSouth Bancshares, Inc. [ COSO ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
02/11/2026

4. 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 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

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
Restricted Stock Units	(1)	02/11/2026		A		4,000		02/11/2029(2)	02/11/2029(2)	Common Stock	4,000	(1)	4,000	D

Explanation of Responses:

1. Restricted stock units ("RSU") convert into shares of the issuer's common stock on a one-for-one basis.

2. The RSUs vest 33.3% on 2/11/2027, 33.3% of 2/11/2028, and 33.4% on 2/11/2029.

	/s/ Lauren Hemby, Chief Accouting Officer	02/13/2026
	** 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.

FAQ

What insider transaction did CoastalSouth Bancshares (COSO) report for its CAO?

CoastalSouth Bancshares reported that Chief Accounting Officer Lauren M. Hemby received a grant of 4,000 restricted stock units. The award was made on February 11, 2026 and represents equity-based compensation that will convert into common shares as the units vest over time.

How many restricted stock units were granted to Lauren Hemby at CoastalSouth (COSO)?

Lauren M. Hemby was granted 4,000 restricted stock units. These RSUs convert on a one-for-one basis into CoastalSouth Bancshares common stock as they vest, creating a direct link between her compensation and future company performance and share price over the vesting schedule.

What is the vesting schedule for the 4,000 RSUs granted at CoastalSouth (COSO)?

The 4,000 RSUs vest in three annual tranches. 33.3% vest on February 11, 2027, another 33.3% on February 11, 2028, and the remaining 33.4% on February 11, 2029, encouraging longer-term retention and alignment with shareholders.

Do the CoastalSouth (COSO) RSUs granted to the CAO have an exercise price?

The restricted stock units were granted at a price of $0.00 per unit, meaning there is no exercise price. When the RSUs vest, they convert into an equal number of common shares, providing value based on the market price at that time.

How many derivative securities does CoastalSouth (COSO) CAO hold after this RSU grant?

After the grant, Lauren M. Hemby beneficially owns 4,000 restricted stock units as derivative securities. These RSUs are held directly and will convert into 4,000 shares of CoastalSouth Bancshares common stock as the vesting milestones are reached over three years.

What does one-for-one RSU conversion mean for CoastalSouth (COSO) shareholders?

A one-for-one RSU conversion means each restricted stock unit becomes one share of common stock upon vesting. For shareholders, it indicates a defined potential increase in outstanding shares tied to executive compensation, occurring gradually as vesting dates are met.