CoastalSouth officer plans $55K stock sale

CoastalSouth Bancshares, Inc. (COSO) received a Rule 144 notice that officer Ernst W. Bruderer plans to sell up to 2,000 shares of common stock through Raymond James & Associates on the NYSE.

Rhea-AI Filing Summary

CoastalSouth Bancshares, Inc. (COSO) received a Rule 144 notice that officer Ernst W. Bruderer plans to sell up to 2,000 shares of common stock through Raymond James & Associates on the NYSE. The notice states 11,954,446 shares of common stock were outstanding as of August 26, 2026, and discloses two prior 1,000‑share sales within the past three months.

Key Figures

Shares to be sold under Rule 144: 2,000 shares Aggregate market value of securities to be sold: $55,002.46 Shares outstanding: 11,954,446 shares +3 more

6 metrics

Shares to be sold under Rule 144 2,000 shares Proposed sale of CoastalSouth Bancshares common stock

Aggregate market value of securities to be sold $55,002.46 Value associated with the 2,000 shares covered by the notice

Shares outstanding 11,954,446 shares Common stock outstanding as of August 26, 2026

Shares sold on August 10, 2026 1,000 shares for $27,564.00 Common stock sold by Ernst Bruderer during past 3 months

Shares sold on August 18, 2026 1,000 shares for $27,889.00 Common stock sold by Ernst Bruderer during past 3 months

Planned sale period end date August 26, 2026 Date tied to shares outstanding and the notice

Key Terms

Rule 144, attorney-in-fact, common stock, NYSE

4 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.

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.

common stock financial

"Common | Raymond James and Associates Inc."

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

NYSE market

"11954446 | 08/26/2026 | NYSE"

A large, regulated marketplace where stocks and other securities are listed and traded, acting like a global auction house that matches buyers and sellers and helps determine share prices. It matters to investors because listing and trading there provide liquidity, price discovery, and regulatory oversight—making it easier to buy or sell holdings and giving companies a visible platform that can affect credibility and access to capital.

FAQ

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

It discloses that officer Ernst W. Bruderer has filed a Rule 144 notice to sell up to 2,000 shares of CoastalSouth Bancshares common stock through Raymond James & Associates on the NYSE, with details on share acquisition and prior sales.

How many CoastalSouth Bancshares (COSO) shares are planned to be sold under this Form 144?

The filing states an intended sale of up to 2,000 shares of CoastalSouth Bancshares, Inc. common stock under Rule 144. This amount reflects the proposed maximum for the notice period, not a guarantee that all shares will be sold.

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

The notice reports that 11,954,446 shares of CoastalSouth Bancshares, Inc. common stock were outstanding as of August 26, 2026. This figure serves as context for applying the volume limits under Rule 144.

What prior sales by Ernst W. Bruderer in COSO stock are disclosed in the last 3 months?

The filing lists two sales: 1,000 shares sold on August 10, 2026 for $27,564.00, and 1,000 shares sold on August 18, 2026 for $27,889.00. These transactions are reported as sales during the past three months.

How and when were the CoastalSouth Bancshares (COSO) shares to be sold under Form 144 acquired?

The notice states that 300 shares were acquired on January 26, 2024 and 1,700 shares on December 31, 2024, both listed as purchases from the issuer for cash, totaling the 2,000 shares covered by the planned sale.

Who is handling the planned Rule 144 sale for CoastalSouth Bancshares (COSO) shares?

The broker listed is Raymond James & Associates, Inc., 880 Carillon Parkway, St. Petersburg, FL. The Form 144 is signed by Rashida Mitchell as duly authorized representative and attorney-in-fact for Ernst W. Bruderer.

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

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Available on EDGAR 08/26/2026 - 04:36 PM Accepted by SEC EDGAR 08/26/2026 - 04:36 PM 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 Inc. 880 Carillon Parkway St. Petersburg FL 33716	2000	55002.46	11954446	08/26/2026	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	01/26/2024	Purchase	Issuer			300	01/26/2024	Cash
Common	12/31/2024	Purchase	Issuer			1700	12/31/2024	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Ernst Bruderer C/O COASTALSOUTH BANCSHARES, INC. 400 GALLERIA PARKWAY Suite 1900 Atlanta GA 30339	Common	08/10/2026	1000	27564.00
Ernst Bruderer C/O COASTALSOUTH 400 GALLERIA PARKWAY Suite 1900 Atlanta GA 30339	Common	08/18/2026	1000	27889.00

144: Remarks and Signature

Remarks
Date of Notice	08/26/2026
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)