# EDGAR Filing Document

**Accession Number:** 0001297107
**File Stem:** 0001193125-25-288330
**Filing Date:** 2025-11
**Character Count:** 5265
**Document Hash:** 3df26eb86fa8654c7b972d8802662f40
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-288330.hdr.sgml**: 20251119

**ACCESSION NUMBER**: 0001193125-25-288330

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 10

**CONFORMED PERIOD OF REPORT**: 20251118

**ITEM INFORMATION**: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

**FILED AS OF DATE**: 20251119

**DATE AS OF CHANGE**: 20251119

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CoastalSouth Bancshares, Inc.
- **CENTRAL INDEX KEY:** 0001297107
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 571184730
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42730
- **FILM NUMBER:** 251500224

**BUSINESS ADDRESS:**
- **STREET 1:** 400 GALLERIA PKWY
- **STREET 2:** SUITE 1900
- **CITY:** ATLANTA
- **STATE:** GA
- **ZIP:** 30339
- **BUSINESS PHONE:** 678-396-4605

**MAIL ADDRESS:**
- **STREET 1:** 400 GALLERIA PKWY
- **STREET 2:** SUITE 1900
- **CITY:** ATLANTA
- **STATE:** GA
- **ZIP:** 30339

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Coastal South Bancshares Inc
- **DATE OF NAME CHANGE:** 20040713

?xml version='1.0' encoding='ASCII'? 8-K

**UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549**

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## FORM 8-K

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**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

**Date of Report (Date of earliest event reported):** November 18, 2025<br>

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COASTALSOUTH BANCSHARES, INC.

**(Exact name of Registrant as Specified in Its Charter)**

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| | | |
|:---|:---|:---|
| Georgia | 001-42730 | 57-1184730 |
| **(State or Other Jurisdiction<br>of Incorporation)** | **(Commission File Number)** | **(IRS Employer<br>Identification No.)** |
| 400 Galleria Parkway<br>Suite 1900 |  |  |
| Atlanta**,** Georgia |  | 30339 |
| **(Address of Principal Executive Offices)** |  | **(Zip Code)** |

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**Registrant's Telephone Number, Including Area Code:** (678) 396-4605<br>

**(Former Name or Former Address, if Changed Since Last Report)**

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Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

**Securities registered pursuant to Section 12(b) of the Act:**

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| | | |
|:---|:---|:---|
| **<br>Title of each class** | **Trading<br>Symbol(s)** | **<br>Name of each exchange on which registered** |
| Common Stock, par value $1.00 per share | COSO | New York Stock Exchange |

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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## Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
*Departure of Directors*

On November 18, 2025, Mr. Boris Gutin notified the Board of Directors (the "Board") of CoastalSouth Bancshares, Inc. (the "Company") that he is resigning from the Board of Directors, effective November 19, 2025.

Mr. Gutin was originally designated to the Board by GCP Capital Partners and its related funds, an investor in the Company's recapitalization in 2017. In connection with the Company's recent initial public offering, and consistent with GCP's customary practice of not having representatives serve on the boards of public companies, Mr. Gutin determined that it was an appropriate time to step down.

Mr. Gutin expressed strong support for the Company, its management team, and the Board of Directors, and conveyed his appreciation for the opportunity to serve. His resignation is not the result of any disagreement with the Company on any matter relating to its operations, policies or practices.

The Board of Directors sincerely thanks Mr. Gutin for his dedicated service and valuable contributions during his tenure.

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**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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| | | | |
|:---|:---|:---|:---|
|  |  |  | **CoastalSouth Bancshares, Inc.** |
| Date: | November 19, 2025 | By:  | /s/ Stephen R. Stone |
|  |  |  | Stephen R. Stone<br>President and Chief Executive Officer |

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