Frankfurt am Main, September 10, 2026

Press Release

VINCI Energies has already secured 83.56 percent of All for One shares prior to the end of the acceptance period

• Based on the current acceptance level and shares otherwise secured, the minimum acceptance threshold of 75% plus one share has been reached
• Acceptance period will end on September 15, 2026, and the additional acceptance period on October 2, 2026
• Shareholders may tender their shares for €67.50 per share in cash

VINCI Energies Deutschland Enterprise Solutions AcquiCo SE, an indirect subsidiary of VINCI S.A., announced that as of September 9, 2026, it has secured approximately 83.56% of All for One’s outstanding shares. This reflects shares tendered into the offer as well as shares acquired through market and off-market purchases.

Based thereon, the minimum acceptance threshold of 75% plus one share has already been reached ahead of the end of the acceptance period.

The acceptance period will end at midnight (Frankfurt am Main local time) on September 15, 2026. Shareholders who have not yet tendered their shares may still do so until the end of the additional acceptance period on October 2, 2026, for a cash consideration of €67.50 per share. Once the additional acceptance period has expired, the offer can no longer be accepted. Shareholders wishing to accept the offer should promptly contact the custodian bank or any other securities services provider where their shares are held.

The offer price of €67.50 per share represents a premium of 105.4% to the three-month volume-weighted average share price before the offer was announced on July 16, 2026, and 94.5% to the Xetra closing price of All for One’s shares on July 15, 2026. Both the Supervisory Board and Management Board of All for One Group SE regard the cash consideration of €67.50 per share as fair and adequate and recommend shareholders to accept the offer.

Shareholders with questions may also contact the shareholder hotline on:

+49 69 920 149 711 (Monday to Friday, 9:00 a.m. to 5:00 p.m. CET)

About VINCI Energies

In a world undergoing constant change, VINCI Energies contributes to the environmental transition by helping bring about major trends in the digital landscape and energy sector. VINCI Energies’ teams roll out technologies and integrate customised multi-technical solutions, from design to implementation, operation and maintenance. With their strong local roots and agile and innovative structure, VINCI Energies’ 2,200 business units have positioned themselves boosting the reliability, efficiency and sustainability of their customers’ infrastructure and processes. VINCI Energies strives for global performance, caring for the planet, useful to people and committed to local communities.

2025: Revenues of €21.6 billion // 109,000 employees // 2,200 Business Units // 60 countries

www.vinci-energies.com

About Axians

Axians, the ICT brand of VINCI Energies, supports its customers — private-sector companies, public-sector entities, operators and service providers — in their infrastructures and digital solutions development.

Axians offers a comprehensive range of ICT solutions and services spanning business applications and data analytics, digital workspaces, enterprise networks, datacenters, cloud services, cybersecurity and telecommunications infrastructure. Axians’ specialized consulting, design, integration and service teams develop bespoke digital transformation solutions that contribute to successful business outcomes for its customers.

2025: Revenues of €3.8 billion // 16,000 employees // 36 countries

www.axians.com

About All for One Group

All for One Group is an international IT, consulting and service provider with a strong SAP focus. It supports more than 4,500 customers — primarily in Germany, Austria, Poland and Switzerland — end-to-end in their sustainable IT, cloud, AI and business transformation. Its ambition is to translate technology into tangible business value. At the center of this are SAP Cloud ERP as the digital core and AI solutions for intelligent, enterprise-wide and industry-specific processes.

In fiscal year 2024/25, All for One generated revenue of EUR 504 million. The company, headquartered in Filderstadt near Stuttgart, is listed in the Prime Standard of the Frankfurt Stock Exchange.

www.all-for-one.com/ir
 

Contact:

VINCI Energies D-A-CH

Diana Plantade - +49 69 50 05 15 82

diana.plantade@vinci-energies.com

Brunswick Group

AllForOne@brunswickgroup.com

Important Notice

This announcement is for information purposes only and constitutes neither an offer to purchase nor a solicitation of an offer to sell shares in All for One. The final terms and conditions of the offer and other provisions relating to the offer are set out in the offer document. Investors and holders of All for One shares are strongly advised to read the offer document and all other documents relating to the offer.

The distribution of this press release, the offer and/or its acceptance may be subject to specific regulations or restrictions in certain jurisdictions. This press release is not intended for direct or indirect publication or distribution in any such jurisdiction. Accordingly, VINCI and its subsidiaries disclaim all liability in the event that any person breaches such restrictions.