1990 4a Architekten founded in Stuttgart by the four architects Matthias Burkart, Eberhard Pritzer (partner until 2001), Alexander von Salmuth and Ernst Ulrich Tillmanns. The office founders had previously worked as project architects at Behnisch und Partner, Stuttgart.
2008 4a Architekten open an office in Moscow. Alexander Schamne becomes Managing Director and Shareholder of 4a Architekten GmbH Moscow.
2011 Founding of 4a Baumanagement GmbH with Achim Zumpfe as Managing Director. The company deals with the tendering and award of contracts along with construction management and site supervision.
2012 Martin Reimer becomes a member of the Executive Board at 4a Architekten GmbH.
2014 Andreas Ditschuneit becomes a member of the Executive Board at 4a Architekten GmbH.
2018 Merger of 4a Baumanagement GmbH into 4a Architekten GmbH. Invitations for bids, the preparation of tenders and site supervision will be continued by 4a Architekten GmbH.
From the end of 2018 Andreas Ditschuneit becomes Executive Partner of 4a Architekten GmbH.