HORNBACH: Form to issue a proxy and instructions to company voting proxy (Hornbach Holding HV 2026 Proxy authorization to Company s proxies EN)

Annual General Meeting of HORNBACH Holding AG & Co. KGaA on 10 July 2026 Granting proxy authorization and issuing instructions to the Company's proxies AGM ticket number (Zugangskennung):* Name / Company: First name: Number of shares:* (natural persons) Phone number:* E-mail address:*

* voluntary information

After timely and formally correct registration by 24:00 (CEST) on 3 July 2026, to be returned no later than 24:00 (CEST) on 9 July 2026 (receipt) to:

HORNBACH Holding AG & Co. KGaA E-Mail: [email protected] c/o CAPTRACE GmbH

Trimburgstr. 2

81249 Munich Germany

Please tick unambiguously: (If several declarations of intent are received, the time of receipt is decisive. Your instructions refer to the proposed resolution of the General Partner and / or the Supervisory Board announced in the convening of the General Meeting in the Federal Gazette. If you do not mark anything, your instruction will be treated as an abstention.)

I/We authorize the Company's designated proxies, Mr Torsten Fues and Mr Reinhard Fischer, both employees of CAPTRACE GmbH, Wiesbaden, both business place in Munich, Germany, each individually and with the right to delegate their authorization to another party, to represent me/us and exercise my/our right to vote at the Annual General Meeting on 10 July 2026 as indicated below. Any declarations of intent made earlier are hereby revoked.

Individual instruction on an agenda item Yes No Abst.**

1. Resolution on the adoption of the annual financial statements of HORNBACH Holding AG & Co. KGaA for the 2025/26 financial year
2. Resolution on the appropriation of net profit for the 2025/26 financial year
Resolution on approval of General Partner's actions in the 2025/26 financial year Resolution on approval of Supervisory Board members' actions in the 2025/26 financial year Election of auditor and Group auditor for the 2026/27 financial year and the auditor for the audit review of the half-year financial report for the 2026/27 financial year Election of auditor for for the sustainability reporting for the 2026/27 financial year


6. Resolution on approval of the remuneration report
7. Election of a Supervisory Board member: Michael Heinz
8. Resolution on authorization to acquire and use treasury stocks pursuant to § 71 (1) No. 8 AktG with potential exclusion of subscription rights and of any tender rights and with the option of retiring treasury stocks
9. Resolution on authorization to deploy derivatives in connection with the acquisition of treasury stocks pursuant to § 71 (1) No. 8 AktG with potential exclusion of subscription rights and of any tender rights

**"Abst."=Abstention

Place Date Signature(s) or Person making the declaration (legible)