Company: FWRG
Filing Date: 2025-11-05
Form Type: S-3ASR
Source: 0001628280-25-049615
Chunk: 1

Company: First Watch Restaurant Group, Inc.
Filing Date: 2025-11-05
Form: S-3ASR
Chunk 1
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 in connection with dividend or interest reinvestment plans, check the following box. x

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. o

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. o

If this Form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box. x

If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. o

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 |     | o |     | Accelerated filer |     | x |     | Non-accelerated filer |     | o |     | Smaller reporting company |     | o |     | Emerging growth company |     | x |

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 7(a)(2)(B) of the Securities Act. x

#### PROSPECTUS

#### First Watch Restaurant Group, Inc.
<div align='center'>5,289,784 Shares of Common Stock Offered by Selling Stockholders</div>

The selling stockholders named in this prospectus may offer and sell up to 5,289,784 shares in the aggregate of our common stock, par value $0.01 (the “common stock”), from time to time in amounts, at prices and on terms that will be determined at the time of any such offering. We will not receive any proceeds from the