Company: FWRG
Filing Date: 2025-08-05
Form Type: S-8
Source: 0001628280-25-037800
Chunk: 0

Company: First Watch Restaurant Group, Inc.
Filing Date: 2025-08-05
Form: S-8
Chunk 0
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<div align='center'>As filed with the Securities and Exchange Commission on August 5, 2025</div>

#### Registration No. 333-

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### WASHINGTON, D.C. 20549

#### FORM S–8

### REGISTRATION STATEMENT

#### UNDER

#### THE SECURITIES ACT OF 1933

#### First Watch Restaurant Group, Inc.
<div align='center'>(Exact name of registrant as specified in its charter)</div>

| Delaware                                                       |     | 82-4271369         |
| (State or other jurisdiction of incorporation or organization) |     | -I.R.S. Employer   
 Identification No. |

<div align='center'>8725 Pendery Place, Suite 201, Bradenton, FL 34201

(Address, including zip code, of registrant’s principal executive offices)

First Watch Restaurant Group, Inc. 2021 Equity Incentive Plan

(Full Title of the Plan)</div>

#### Jay Wolszczak, Esq.
<div align='center'>Chief Legal Officer, General Counsel and Secretary</div>

#### 8725 Pendery Place, Suite 201

#### Bradenton, FL 34201
<div align='center'>(941) 907-9800

(Name, Address, Including Zip Code, and Telephone Number, Including Area Code, of Agent For Service)

Copies to:</div>

#### Lyuba Goltser

#### Weil, Gotshal & Manges LLP

#### 767 Fifth Avenue

#### New York, New York 10153
<div align='center'>(212) 310-8000 (Phone)

(212) 310-8007 (Fax)</div>

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

| Large accelerated filer |     | ☐ |     | Accelerated filer         |     | ☒ |
| Non-accelerated filer   |     | ☐ |     | Smaller reporting company |     | ☐ |
|                         |     |   |     | Emerging growth company   |     | �