Company: PNBK
Filing Date: 2025-06-06
Form Type: DEFA14A
Source: 0001171843-25-003740
Chunk: 0

Company: PATRIOT NATIONAL BANCORP INC
Filing Date: 2025-06-06
Form: DEFA14A
Chunk 0
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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549
<div align='center'>_________________</div>

#### FORM 8-K
<div align='center'>_________________</div>

### CURRENT REPORT
<div align='center'>**Pursuant to Section 13 or 15(d)
of
the Securities Exchange Act of 1934

Date of Report (Date of earliest
event reported): June 5, 2025

_______________________________**</div>

#### PATRIOT
NATIONAL BANCORP, INC.

<div align='center'>(Exact name of registrant as specified in its charter)

_______________________________</div>

| Connecticut                                    | 000-29599               | 06-1559137                          |
| (State or Other Jurisdiction of Incorporation) | -Commission File Number | -I.R.S. Employer Identification No. |

#### 900
Bedford Street

#### Stamford,
Connecticut
06901

<div align='center'>**(Address of Principal Executive Offices) (Zip Code)

(203)
252-5900

(Registrant's telephone number, including area code)**</div>

#### N/A
<div align='center'>(Former name or former address, if changed since
last report)

_______________________________</div>

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:

| Title of                
 each class              | Trading Symbol(s) | Name of each                 
 exchange on which registered |
| Common Stock, par value 
 $0.01 per share         | PNBK              | NASDAQ                       
 Global Market                |

Indicate by check mark whether the
registrant is an