Exhibit 99.1
JOINT FILING AGREEMENT
In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including additional amendments thereto) with respect to the Class A Common Stock, $0.01 par value per share, of Portillo's Inc., a Delaware corporation. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.
Dated: August 15, 2024
| Engaged Capital Flagship Master Fund, LP | |||
| By: | Engaged Capital, LLC General Partner | ||
| By: | /s/ Glenn W. Welling | ||
| Name: | Glenn W. Welling | ||
| Title: | Founder and Chief Investment Officer | ||
| Engaged Capital Co-Invest XVII, LP | |||
| By: | Engaged Capital, LLC General Partner | ||
| By: | /s/ Glenn W. Welling | ||
| Name: | Glenn W. Welling | ||
| Title: | Founder and Chief Investment Officer | ||
| Engaged Capital, LLC | |||
| By: | /s/ Glenn W. Welling | ||
| Name: | Glenn W. Welling | ||
| Title: | Founder and Chief Investment Officer | ||
| Engaged Capital Holdings, LLC | |||
| By: | /s/ Glenn W. Welling | ||
| Name: | Glenn W. Welling | ||
| Title: | Sole Member | ||
/s/ Glenn W. Welling | |
| Glenn W. Welling |
