Company: FWRG
Filing Date: 2025-11-06
Form Type: 424B3
Source: 0001628280-25-050306
Chunk: 32

Company: First Watch Restaurant Group, Inc.
Filing Date: 2025-11-06
Form: 424B3
Chunk 32
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, carefully before you make your investment decision.

This prospectus may not be used to offer and sell shares of our common stock unless accompanied by a prospectus supplement or a free writing prospectus.

The selling stockholders may offer and sell the common stock described in this prospectus and any prospectus supplement to or through one or more underwriters, dealers and agents, or directly to purchasers, or through a combination of these methods. If any underwriters, dealers or agents are involved in the sale of our common stock, their names and any applicable purchase price, fee, commission or discount arrangement between or among them will be set forth, or will be calculable from the information set forth, in the applicable prospectus supplement. See the sections of this prospectus entitled “About this Prospectus” and “Plan of Distribution” for more information.

As of November 4, 2025, our public float, which is equal to the aggregate market value of our outstanding common stock held by non-affiliates, was approximately $890,639,905 based on 61,032,105 shares of outstanding common stock on October 31, 2025, of which approximately 54,010,910 shares were held by non-affiliates, and a price per share of $16.49, the closing price of our common stock on that date.

Our common stock is listed on the Nasdaq Global Select Market (“Nasdaq”) under the symbol “FWRG.” On November 4, 2025, the last sale price of our common stock as reported on Nasdaq was $17.60 per share.

Investing in our common stock involves risk. See “

#### Risk Factors

#### ” on page

#### 9
of this prospectus and any similar section contained in the applicable prospectus supplement to read about factors you should consider before buying shares of our common stock.

Neither the Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved of these securities or determined if this prospectus or the accompanying prospectus supplement is truthful or complete. Any representation to the contrary is a criminal offense.

<div align='center'>The date of this prospectus is November 5, 2025.

S-25</div>

### TABLE OF CONTENTS
| ABOUT THIS PROSPECTUS                                                                |     |  1 |
| WHERE YOU CAN FIND MORE INFORMATION; INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE |     |  3 |
| CAUTION