# EDGAR Filing Document

**Accession Number:** 0001297107
**File Stem:** 0000927089-26-000086
**Filing Date:** 2026-5
**Character Count:** 29908
**Document Hash:** 5f9eb223e698007bd077ed7012b6b946
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000927089-26-000086.hdr.sgml**: 20260506

**ACCESSION NUMBER**: 0000927089-26-000086

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260506

**DATE AS OF CHANGE**: 20260506

**SUBJECT COMPANY**: 

**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:** SCHEDULE 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-95232
- **FILM NUMBER:** 26949634

**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
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Patriot Financial Partners II, L.P.
- **CENTRAL INDEX KEY:** 0001583223

**ORGANIZATION NAME:**
- **EIN:** 453772738

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A

**BUSINESS ADDRESS:**
- **STREET 1:** 2929 ARCH STREET
- **CITY:** PHILADELPHIA
- **STATE:** PA
- **ZIP:** 19104
- **BUSINESS PHONE:** 215-399-4650

**MAIL ADDRESS:**
- **STREET 1:** 2929 ARCH STREET
- **CITY:** PHILADELPHIA
- **STATE:** PA
- **ZIP:** 19104

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

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**(Amendment No. 1)**

**Issuer:** CoastalSouth Bancshares, Inc.

**Title of Class of Securities:** Voting Common Stock

**CUSIP Number:** —

**Date of Event Which Requires Filing of this Statement:** 04/29/2026

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [ ] Rule 13d-1(b)

- [ ] Rule 13d-1(c)

- [x] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>Patriot Financial Partners II, L.P. | Names of Reporting Persons<br>Patriot Financial Partners II, L.P. |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>612053.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>612053.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>612053.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>612053.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.1% | Percent of Class Represented by Amount in Row (9)<br>5.1% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

**Comment for Type of Reporting Person:** This calculation is based on 11,853,258 shares of Voting Common Stock of the Issuer outstanding as of March 31, 2026, as reported in the Issuer's earnings release included as an exhibit to the Form 8-K filed on April 20, 2026, plus the conversion of 132,156 shares of non-voting shares to Voting Common Stock on April 30, 2026.

---

| 1. | Names of Reporting Persons<br>Patriot Financial Partners II Coastal SPV, LLC | Names of Reporting Persons<br>Patriot Financial Partners II Coastal SPV, LLC |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>683467.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>683467.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>683467.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>683467.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.7% | Percent of Class Represented by Amount in Row (9)<br>5.7% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** This calculation is based on 11,853,258 shares of Voting Common Stock of the Issuer outstanding as of March 31, 2026, as reported in the Issuer's earnings release included as an exhibit to the Form 8-K filed on April 20, 2026, plus the conversion of 132,156 shares of non-voting shares to Voting Common Stock on April 30, 2026.

---

| 1. | Names of Reporting Persons<br>Patriot Financial Partners Parallel II, L.P. | Names of Reporting Persons<br>Patriot Financial Partners Parallel II, L.P. |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>71414.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>71414.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>71414.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>71414.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>0.6% | Percent of Class Represented by Amount in Row (9)<br>0.6% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

**Comment for Type of Reporting Person:** This calculation is based on 11,853,258 shares of Voting Common Stock of the Issuer outstanding as of March 31, 2026, as reported in the Issuer's earnings release included as an exhibit to the Form 8-K filed on April 20, 2026, plus the conversion of 132,156 shares of non-voting shares to Voting Common Stock on April 30, 2026.

---

| 1. | Names of Reporting Persons<br>Patriot Financial Partners GP II, L.P. | Names of Reporting Persons<br>Patriot Financial Partners GP II, L.P. |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>683467.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>683467.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>683467.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>683467.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.7% | Percent of Class Represented by Amount in Row (9)<br>5.7% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

**Comment for Type of Reporting Person:** This calculation is based on 11,853,258 shares of Voting Common Stock of the Issuer outstanding as of March 31, 2026, as reported in the Issuer's earnings release included as an exhibit to the Form 8-K filed on April 20, 2026, plus the conversion of 132,156 shares of non-voting shares to Voting Common Stock on April 30, 2026.

---

| 1. | Names of Reporting Persons<br>Patriot Financial Partners GP II, LLC | Names of Reporting Persons<br>Patriot Financial Partners GP II, LLC |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>683467.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>683467.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>683467.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>683467.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.7% | Percent of Class Represented by Amount in Row (9)<br>5.7% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** This calculation is based on 11,853,258 shares of Voting Common Stock of the Issuer outstanding as of March 31, 2026, as reported in the Issuer's earnings release included as an exhibit to the Form 8-K filed on April 20, 2026, plus the conversion of 132,156 shares of non-voting shares to Voting Common Stock on April 30, 2026.

---

| 1. | Names of Reporting Persons<br>Patriot Financial Manager, L.P. | Names of Reporting Persons<br>Patriot Financial Manager, L.P. |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>7900.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>7900.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>7900.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>7900.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>0.1% | Percent of Class Represented by Amount in Row (9)<br>0.1% |
| 12. | Type of Reporting Person (See Instructions)<br>IA, PN | Type of Reporting Person (See Instructions)<br>IA, PN |

**Comment for Type of Reporting Person:** This calculation is based on 11,853,258 shares of Voting Common Stock of the Issuer outstanding as of March 31, 2026, as reported in the Issuer's earnings release included as an exhibit to the Form 8-K filed on April 20, 2026, plus the conversion of 132,156 shares of non-voting shares to Voting Common Stock on April 30, 2026.

---

| 1. | Names of Reporting Persons<br>Patriot Financial Manager, LLC | Names of Reporting Persons<br>Patriot Financial Manager, LLC |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>7900.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>7900.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>7900.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>7900.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>0.1% | Percent of Class Represented by Amount in Row (9)<br>0.1% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** This calculation is based on 11,853,258 shares of Voting Common Stock of the Issuer outstanding as of March 31, 2026, as reported in the Issuer's earnings release included as an exhibit to the Form 8-K filed on April 20, 2026, plus the conversion of 132,156 shares of non-voting shares to Voting Common Stock on April 30, 2026.

---

| 1. | Names of Reporting Persons<br>W. Kirk Wycoff | Names of Reporting Persons<br>W. Kirk Wycoff |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>691367.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>691367.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>691367.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>691367.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.8% | Percent of Class Represented by Amount in Row (9)<br>5.8% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** This calculation is based on 11,853,258 shares of Voting Common Stock of the Issuer outstanding as of March 31, 2026, as reported in the Issuer's earnings release included as an exhibit to the Form 8-K filed on April 20, 2026, plus the conversion of 132,156 shares of non-voting shares to Voting Common Stock on April 30, 2026.

---

| 1. | Names of Reporting Persons<br>James J. Lynch | Names of Reporting Persons<br>James J. Lynch |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>691367.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>691367.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>691367.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>691367.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.8% | Percent of Class Represented by Amount in Row (9)<br>5.8% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** This calculation is based on 11,853,258 shares of Voting Common Stock of the Issuer outstanding as of March 31, 2026, as reported in the Issuer's earnings release included as an exhibit to the Form 8-K filed on April 20, 2026, plus the conversion of 132,156 shares of non-voting shares to Voting Common Stock on April 30, 2026.

---

| 1. | Names of Reporting Persons<br>IRA M. LUBERT | Names of Reporting Persons<br>IRA M. LUBERT |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>691367.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>691367.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>691367.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>691367.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.8% | Percent of Class Represented by Amount in Row (9)<br>5.8% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** This calculation is based on 11,853,258 shares of Voting Common Stock of the Issuer outstanding as of March 31, 2026, as reported in the Issuer's earnings release included as an exhibit to the Form 8-K filed on April 20, 2026, plus the conversion of 132,156 shares of non-voting shares to Voting Common Stock on April 30, 2026.

---

| 1. | Names of Reporting Persons<br>JAMES F. DEUTSCH | Names of Reporting Persons<br>JAMES F. DEUTSCH |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [x] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>691367.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>691367.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>691367.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>691367.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.8% | Percent of Class Represented by Amount in Row (9)<br>5.8% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** This calculation is based on 11,853,258 shares of Voting Common Stock of the Issuer outstanding as of March 31, 2026, as reported in the Issuer's earnings release included as an exhibit to the Form 8-K filed on April 20, 2026, plus the conversion of 132,156 shares of non-voting shares to Voting Common Stock on April 30, 2026.

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**Item 1(a). Name of Issuer:**
CoastalSouth Bancshares, Inc.

**Item 1(b). Address of Issuer's Principal Executive Offices:**
400 GALLERIA PKWY, 400 GALLERIA PKWY, ATLANTA, GEORGIA, 30339.

**Item 2(a). Name of Person Filing:**
Patriot Financial Partners II, L.P.
Patriot Financial Partners II Coastal SPV, LLC
Patriot Financial Partners Parallel II, L.P.
Patriot Financial Partners GP II, L.P.
Patriot Financial Partners GP II, LLC
Patriot Financial Manager, L.P.
Patriot Financial Manager, LLC
W. Kirk Wycoff
James J. Lynch
Ira M. Lubert
James F. Deutsch

**Item 2(b). Address of Principal Business Office:**
Four Radnor Corporate Center
100 Matsonford Road Suite 210
Radnor, Pennsylvania 19087

**Item 2(c). Citizenship:**
See appropriate cover page above.

**Item 2(d). Title of Class of Securities:**
Voting Common Stock

**Item 2(e). CUSIP Number:**
—

**Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:**

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g) [ ] A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) [ ] A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), if filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

(k) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

**Item 4. Ownership:**

**(a) Amount beneficially owned:**

On April 29, 2026, Patriot Financial Partners II, L.P. and Patriot Financial Partners Parallel II, L. P. sold an aggregate of 600,000 shares of Voting Common Stock at a price of $25.00 per share in a private transaction. On April 30, 2026, Patriot Financial Partners II, L.P. and Patriot Financial Partners Parallel II, L.P. converted 132,156 shares of non-voting common stock for 132,156 shares of Voting Common Stock. See cover sheets above with respect to each of the reporting persons.

**(b) Percent of class:**

See cover sheets above with respect to each of the reporting persons.

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

NA

**(ii) Shared power to vote or to direct the vote:**

See cover sheets above with respect to each of the reporting persons.

**(iii) Sole power to dispose or to direct the disposition of:**

NA

**(iv) Shared power to dispose or to direct the disposition of:**

See cover sheets above with respect to each of the reporting persons.

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

Not Applicable

**Item 7. Identification and Classification of the Subsidiary**

Not Applicable

**Item 8. Identification and Classification of Members of the Group**

Patriot Financial Partners II, L.P.
Patriot Financial Partners II Coastal SPV, LLC
Patriot Financial Partners Parallel II, L.P.
Patriot Financial Partners GP II, L.P.
Patriot Financial Partners GP II, LLC
Patriot Financial Manager, L.P.
Patriot Financial Manager, LLC
W. Kirk Wycoff
James J. Lynch
Ira M. Lubert
James F. Deutsch

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

—

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Patriot Financial Partners II, L.P.**

**Date:** 05/06/2026

**By:** /s/ W. Kirk Wycoff

**Name & Title:** Member of Patriot Financial Partners GP II, LLC, the general partner of Patriot Financial Partners GP II, L.P., the general partner

**Patriot Financial Partners II Coastal SPV, LLC**

**Date:** 05/06/2026

**By:** /s/ W. Kirk Wycoff

**Name & Title:** Member of Patriot Financial Partners GP II, LLC, the general partner of Patriot Financial Partners GP II, L.P., the general partner

**Patriot Financial Partners Parallel II, L.P.**

**Date:** 05/06/2026

**By:** /s/ W. Kirk Wycoff

**Name & Title:** Member of Patriot Financial Partners GP II, LLC, the general partner of Patriot Financial Partners GP II, L.P., the general partner

**Patriot Financial Partners GP II, L.P.**

**Date:** 05/06/2026

**By:** /s/ W. Kirk Wycoff

**Name & Title:** Member of Patriot Financial Partners GP II, LLC., the general partner of Patriot Financial Partners GP II, L.P.

**Patriot Financial Partners GP II, LLC**

**Date:** 05/06/2026

**By:** /s/ W. Kirk Wycoff

**Name & Title:** Member

**Patriot Financial Manager, L.P.**

**Date:** 05/06/2026

**By:** /s/ W. Kirk Wycoff

**Name & Title:** Member of Patriot Financial Manager, LLC, the general partner of Patriot Financial Manager, L.P.

**Patriot Financial Manager, LLC**

**Date:** 05/06/2026

**By:** /s/ W. Kirk Wycoff

**Name & Title:** Member

**W. Kirk Wycoff**

**Date:** 05/06/2026

**By:** /s/ W. Kirk Wycoff

**Name & Title:** W. Kirk Wycoff

**James J. Lynch**

**Date:** 05/06/2026

**By:** /s/ James J. Lynch

**Name & Title:** James J. Lynch

**IRA M. LUBERT**

**Date:** 05/06/2026

**By:** /s/ Ira M. Lubert

**Name & Title:** Ira M. Lubert

**JAMES F. DEUTSCH**

**Date:** 05/06/2026

**By:** /s/ James F. Deutsch

**Name & Title:** James F. Deutsch