CoastalSouth holder plans $27.6K stock sale

CoastalSouth Bancshares, Inc. (COSO) has a notice of proposed sale under Rule 144 for common stock held for the account of Ernst W. Bruderer.

Rhea-AI Filing Summary

CoastalSouth Bancshares, Inc. (COSO) has a notice of proposed sale under Rule 144 for common stock held for the account of Ernst W. Bruderer. The filing states an intention to sell up to 1,000 shares of COSO common stock through Raymond James & Associates, with an aggregate market value of $27,563.83, on or about August 10, 2026 on the NYSE. COSO reports 11,954,446 shares outstanding, which is a baseline figure, not the amount being sold. The 1,000 shares were acquired via an IPO purchase from the issuer on July 2, 2025 for cash.

Key Figures

Shares proposed to be sold: 1,000 shares Aggregate market value: $27,563.83 Shares outstanding: 11,954,446 shares +2 more

5 metrics

Shares proposed to be sold 1,000 shares Maximum COSO common shares in the Rule 144 notice

Aggregate market value $27,563.83 Value of 1,000 COSO shares covered by the proposed sale

Shares outstanding 11,954,446 shares COSO common shares outstanding listed in the Form 144

Approximate sale date 08/10/2026 Planned date for the Rule 144 sale on the NYSE

Acquisition date 07/02/2025 Date the 1,000 shares were acquired via IPO purchase for cash

Key Terms

Rule 144, aggregate market value, attorney-in-fact

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

aggregate market value financial

"Common | Raymond James and Associates ... | 1000 | 27563.83 |"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

attorney-in-fact regulatory

"as attorney-in-fact for Ernst W Bruderer"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

What does the Form 144 filing disclose for CoastalSouth Bancshares, Inc. (COSO)?

The Form 144 discloses that up to 1,000 shares of CoastalSouth Bancshares, Inc. common stock may be sold for the account of Ernst W. Bruderer under Rule 144, through Raymond James & Associates, with an aggregate market value of $27,563.83.

How many CoastalSouth Bancshares (COSO) shares are proposed to be sold and when?

The notice covers a proposed sale of up to 1,000 shares of COSO common stock, with an approximate sale date of August 10, 2026 on the NYSE, as stated in the filing’s securities information section.

What is the reported aggregate market value of the COSO shares in this Form 144?

The filing reports an aggregate market value of $27,563.83 for the 1,000 shares of CoastalSouth Bancshares, Inc. common stock covered by the proposed Rule 144 sale.

How many CoastalSouth Bancshares (COSO) shares are outstanding according to this filing?

The Form 144 lists 11,954,446 shares outstanding of CoastalSouth Bancshares, Inc. common stock. This figure provides context for the company’s total equity base and is separate from the 1,000 shares proposed for sale.

How and when were the COSO shares to be sold under this Form 144 originally acquired?

The 1,000 shares of CoastalSouth Bancshares, Inc. common stock were acquired on July 2, 2025 via an IPO purchase from the issuer for cash, as described in the securities-to-be-sold section.

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

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Available on EDGAR 08/25/2026 - 10:36 AM Accepted by SEC EDGAR 08/25/2026 - 10:35 AM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002067397
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	CoastalSouth Bancshares, Inc.
SEC File Number	001-42730
Address of Issuer	400 GALLERIA PKWY SUITE 1900 ATLANTA GEORGIA 30339
Phone	678-396-4605
Name of Person for Whose Account the Securities are To Be Sold	Bruderer Ernst W.
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Raymond James and Associates 880 Carillon Parkway St. Petersburg FL 33716	1000	27563.83	11954446	08/10/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	07/02/2025	IPO Purchase	Issuer			1000	07/02/2025	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	08/25/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Rashida Mitchell, as duly authorized representative of Raymond James & Associates, Inc., as attorney-in-fact for Ernst W Bruderer
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)