EXHIBIT 99.1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k)(1) 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 13G (including amendments thereto) with respect to the Common Stock, par value $0.001 per share, of Leslie's, Inc. Dated: May 20, 2026 By: /s/ Baxter Lee Name: Baxter Lee By: /s/ Andrew Storm Name: Andrew Storm