X0508 4 2025-12-31 0001647088 WillScot Holdings Corp WSC 0001723486 Soultz Bradley Lee 6400 E MCDOWELL RD. STE 300 SCOTTSDALE AZ 85257 true true false false Chief Executive Officer false Common Stock 2025-12-31 4 A false 3295 0 A 131599 D Common Stock 2025-12-31 4 M false 300000 A 431599 D Common Stock 2025-12-31 4 F false 79050 18.83 D 352549 D Common Stock 194225 I By Ellen M. Soultz Irrevocable Trust Common Stock 418376 I By Bradley L. Soultz Irrevocable Trust Performance Stock Units 2025-12-31 4 M false 300000 D Common Stock 300000 0 D Restricted Stock Units Common Stock 528732 528732 D Stock Options (right to buy) 13.6 Common Stock 408497 408497 I By Ellen M Soultz Irrevocable Trust Restricted stock granted pursuant to the WillScot Mobile Mini Holdings Corp. 2020 Incentive Award Plan and a Restricted Stock Award Agreement between the Issuer and Mr. Soultz. These shares comprise a part of the Issuer's annual compensation program for executive directors and, subject to the terms and conditions of such plan and award agreement, the restrictions on these shares lapse in full one year from the grant date. Mr. Soultz's annual compensation has been pro-rated for his service during the remainder of the 2024/2025 annual term. Each performance-based restricted stock unit ("PSU") represents a contingent right to receive upon vesting one share of common stock of the Issuer, par value $0.0001 per share, or its cash equivalent. The Reporting Person was granted PSUs pursuant to a Performance-Based Restrictive Stock Unit Agreement, by and between the Reporting Person and the Issuer, dated as of September 7, 2021 (the "Performance-Based RSU Agreement"). Portions of the PSUs vest on the achievement of the relative total stockholder return ("TSR") of the Issuer's common stock as compared to the TSR of the constituents of the S&P Mid Cap 400 Index at the grant date over a specified measurement period, subject to the terms and conditions of the WillScot Mobile Mini Holdings Corp. 2020 Incentive Award Plan (the "Plan") and the Performance-Based RSU Agreement. Each time-based restricted stock unit ("RSU") represents a contingent right to receive upon vesting one share of common stock of the Issuer, par value $0.0001 per share, or its cash equivalent. On September 7, 2021, pursuant to the Amended and Restated Employment Agreement, by and between the Issuer and the Reporting Person, dated as of September 7, 2021 (the "A&R Employment Agreement"), the Reporting Person was granted 10,232 RSUs which vested in three equal installments on each of the first three anniversaries of the grant date, subject to the terms and conditions of the Plan and the Restricted Stock Unit Agreement entered into by and between the Reporting Person and the Issuer. The stock options (the "Options") reported on this Form 4 represent the right upon vesting to buy shares of the Issuer's Common Stock pursuant to the terms and conditions of the Plan and the Nonqualified Stock Option Award Agreement entered into between the Issuer and the Reporting Person as of March 20, 2018 (the "Award Agreement"). The Options vested in equal installments on each of the first four anniversaries of the grant date subject to the terms and conditions of the Plan and Award Agreement. /s/ Hezron T. Lopez as Attorney-in-Fact 2026-01-05