CoastalSouth Bancshares (COSO) director buys 1,500 shares

Rhea-AI Filing Summary

CoastalSouth Bancshares, Inc. director Michael B. High reported an open-market purchase of company stock. On February 10, 2026, he bought 1,500 shares of common stock at $25.14 per share through an IRA, recorded as indirect ownership.

After this transaction, he beneficially owns 1,500 shares indirectly by IRA and 100 shares directly, according to the filing.

Insider Trade Summary

Net Buyer: 1,500 shares ($37,710)

Net Buy 2 txns

Insider HIGH MICHAEL B

Role Director

Bought 1,500 shs ($38K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	1,500	$25.14	$38K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 1,500 shares (Indirect, By IRA); Common Stock — 100 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

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^*

HIGH MICHAEL B

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
02/10/2026

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
Common Stock	02/10/2026		P		1,500	A	$25.14	1,500	I	By IRA
Common Stock								100	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:

	/s/ Lauren Hemby, Chief Accounting Officer	02/12/2026
	** 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?

CoastalSouth Bancshares reported that director Michael B. High bought 1,500 common shares. The purchase occurred on February 10, 2026 at $25.14 per share in an open-market transaction through an IRA, increasing his reported beneficial ownership.

How many CoastalSouth Bancshares (COSO) shares did the director buy and at what price?

Director Michael B. High purchased 1,500 CoastalSouth Bancshares common shares at $25.14 each. The transaction was classified as an open-market purchase and was executed on February 10, 2026, according to the Form 4 filing.

How is Michael B. High’s ownership in CoastalSouth Bancshares (COSO) structured?

After the reported transaction, Michael B. High beneficially owns 1,500 CoastalSouth Bancshares common shares indirectly via an IRA and 100 shares directly. The filing distinguishes between indirect IRA holdings and his smaller directly held position.

Was the CoastalSouth Bancshares (COSO) insider transaction a buy or a sell?

The reported insider activity was a purchase, not a sale. Director Michael B. High executed an open-market buy of 1,500 CoastalSouth Bancshares common shares on February 10, 2026, at a price of $25.14 per share.

What does indirect ownership by IRA mean in the CoastalSouth Bancshares (COSO) filing?

Indirect ownership by IRA means the 1,500 CoastalSouth Bancshares shares are held in an individual retirement account for Michael B. High. The filing lists these as indirectly owned, separate from his 100 directly held common shares.