X0609 4 2026-10-13 0000730263 THOR INDUSTRIES INC THO 0001255017 ORTHWEIN PETER BUSCH false C/O THOR INDUSTRIES, INC. 2900 INDEPENDENCE COURT ELKHART IN 46514 true false false false 0 Common Stock 2026-10-13 4 A 0 2912 0 A 902145 D Common Stock 139000 I See Note Common Stock 71070 I See Note Common Stock 138896 I See Note Common Stock 30000 I See Note Common Stock 94783 I See Note Common Stock 124000 I See Note Common Stock 30000 I See Note Common Stock 299700 I See Note The transaction reported is a grant of restricted stock units that may be settled only by delivery of an equal number of shares of common stock. The shares will fully vest on October 13, 2027, the first anniversary of the date of grant, subject to forfeiture. Reflects the transfer of 161,104 shares from the reporting person's grantor retained annuity trust. These shares are held by the Peter Orthwein Irrevocable Trust, dated December 3, 2020, for the benefit of the reporting person's descendants. The reporting person is the settlor of the trust. An unaffiliated third-party serves as the trustee of the trust, but the reporting person retains certain investment control over the reported shares. These shares are held for the account of the reporting person's spouse. Reflects the transfer of 161,104 shares to the reporting person's direct ownership. These shares are held by the reporting person's grantor retained annuity trust. These shares are held for the account of a trust for the benefit of the reporting person's half-brother. The reporting person is one of the trustees of the trust. These shares are held for the account of the Trust FBO Peter B. Orthwein, of which the reporting person is the trustee and beneficiary. These shares are held for the account of the Adolphus Busch Orthwein Trust for the benefit of the reporting person's children. The reporting person is the trustee of the trust. These shares are held for the account of the Adolphus Busch Orthwein Trust for the benefit of the reporting person, of which the reporting person is the trustee and beneficiary. These shares are held for the account of the PBO-BMO Descendants Trust, of which the reporting person is the sole trustee and of which the reporting person's three youngest children are the beneficiaries. The reporting person disclaims beneficial ownership of the shares except to the extent of the pecuniary interest of the reporting person, his spouse and his three youngest children in the shares. /s/ Barb Montague, attorney-in-fact for Peter Busch Orthwein 2026-10-15