CoastalSouth (COSO) CFO-COO awarded 10,000 RSUs vesting through 2029

Rhea-AI Filing Summary

CoastalSouth Bancshares CFO and COO Anthony P. Valduga received a grant of 10,000 restricted stock units on February 11, 2026. These RSUs convert into common stock on a one-for-one basis. The award vests in stages: 33% on February 11, 2027, 33% on February 11, 2028, and 34% on February 11, 2029.

After this grant, Valduga directly beneficially owns 10,000 derivative securities tied to CoastalSouth common stock, reflecting equity-based compensation aligned with multi-year service.

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

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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^*

Valduga Anthony P.

(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)
	CFO AND COO

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 Unit	(1)	02/11/2026		A		10,000		02/11/2029(2)	02/11/2029(2)	Common Stock	10,000	(1)	10,000	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% on 2/11/2027, 33% of 2/11/2028, and 34% 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 Anthony P. Valduga?

CoastalSouth Bancshares reported that CFO and COO Anthony P. Valduga received 10,000 restricted stock units on February 11, 2026. These RSUs are equity awards that will settle into common stock over a multi-year vesting schedule ending in 2029.

How many restricted stock units were granted to the COSO CFO and COO?

Anthony P. Valduga was granted 10,000 restricted stock units. These RSUs give him the right to receive 10,000 shares of CoastalSouth Bancshares common stock on a one-for-one basis, subject to the specified vesting dates spread between 2027 and 2029.

What is the vesting schedule for Anthony P. Valduga’s 10,000 COSO RSUs?

The 10,000 restricted stock units vest in three tranches: 33% on February 11, 2027, another 33% on February 11, 2028, and the remaining 34% on February 11, 2029. Vesting must occur before the RSUs convert into common shares.

How do the CoastalSouth Bancshares RSUs held by the CFO convert into shares?

The restricted stock units convert into shares of CoastalSouth Bancshares common stock on a one-for-one basis. This means each vested RSU becomes one share, provided the vesting conditions and schedule through 2029 are satisfied by the executive.

Is the COSO CFO’s RSU ownership reported as direct or indirect?

The filing shows Anthony P. Valduga’s 10,000 restricted stock units as directly owned. There is no separate entity or indirect ownership structure disclosed, so the derivative securities are reported under his direct beneficial ownership in the Form 4.

What is the Form 4 transaction code for the COSO executive’s RSU grant?

The transaction uses code “A,” indicating a grant, award, or other acquisition of derivative securities. In this case, it reflects an equity compensation grant of restricted stock units rather than an open-market purchase or sale of CoastalSouth Bancshares shares.