X0508 4 2025-12-31 0001647088 WillScot Holdings Corp WSC 0001723491 Boswell Timothy D 6400 E MCDOWELL RD. STE 300 SCOTTSDALE AZ 85257 false true false false President & COO false Stock Options (right to buy) 18.83 2025-12-31 4 A false 100000 0 A 2035-12-31 Common Stock 100000 100000 D Stock Options (right to buy) 13.6 2028-03-20 Common Stock 100000 100000 D Stock Options (right to buy) 23.39 2035-09-04 Common Stock 125691 125691 D 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 Employment Agreement entered into between the Issuer and the Reporting Person as of December 31, 2025 (the "Employment Agreement"). The Options vested in equal installments on each of the first three anniversaries of the grant date subject to the terms and conditions of the Plan and Employment Agreement. The stock options (the "Options"), reported on this Form 4, represent the right upon vesting to buy shares of Class A 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. 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 Employment Agreement entered into between the Issuer and the Reporting Person as of September 3, 2025 (the "Employment Agreement"). The Options vested in equal installments on each of the first three anniversaries of the grant date subject to the terms and conditions of the Plan and Employment Agreement. /s/ Hezron T. Lopez as Attorney-in-Fact 2026-01-05