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ABBA Therapeutics AG 

Basel · Since 2015

ABBA Therapeutics AG is a biopharmaceutical company specialized in mechanisms of cancer and the development of novel antibody medicines for cancer immunotherapy. The company researches protein targets related to immune checkpoints and develops therapeutic antibodies; a PCT patent application has been submitted for antibodies against one of its targets.

Access Personalberatung GmbH 

Basel · Since 2018

Access Personalberatung GmbH is a specialised personnel consultancy focused on technical roles, particularly in electrical engineering. It provides temporary staffing, permanent placement, on-site management and payrolling services, and carries out mandate-based candidate searches.

ACE VENTURES GMBH 

Basel · Since 2015

ACE VENTURES GMBH operates the Ace Forensic brand and provides forensic accounting, fraud investigations, due diligence, managed legal services, internal audit and litigation support. The firm conducts cross‑border investigations, asset tracing, eDiscovery and regulatory disclosure work and collaborates with financial regulators on enforcement and compliance matters.

ADRIAN DINNER Psychoanalytische Therapie und Beratung GmbH 

Basel · Since 2022

The company's core activity is the provision of psychotherapeutic services, including: psychoanalytic therapy, psychodynamic coaching, and organizational consulting. The company offers these services as an independent psychotherapist and is federally recognized.

Aerojet GmbH 

Basel · Since 2017

The core activity of Aerojet GmbH is the provision of engineering services, particularly in the areas of: design and virtual prototyping, structural analysis and strength verification, fatigue and damage tolerance analysis, certification and approval of aircraft repairs, and consulting and support in the planning and approval of aircraft repairs. The focus is on the aerospace industry, particularly on the interior design of VIP aircraft.

Akos & Partner/innen AG 

Basel · Since 1991

The core activity of Akos & Partnerinnen AG is the provision of communication services, particularly agency work for renowned companies, institutions and the public sector.

Awilli Group AG 

Basel · Since 2024

Awilli Group AG is a staffing company that provides global recruitment and placement services for skilled trades, technical and engineering roles. It serves regulated and complex industries such as semiconductor manufacturing, life sciences, hyperscale data centers and advanced industrial manufacturing, and also offers project-based SOW engagements, equipment hire and specialist training like orbital welding.

Alles gesagt, Andrea Machura 

Basel · Since 2020

The core activity of the company 'Alles gesagt' is the creation and communication of corporate content, particularly the development of stories and visions for products and services. The company offers services in the field of corporate communications, such as creating engaging content to uniquely position companies and their products.

Allround Bau Team Drugzani 

Basel · Since 2018

Allround Bau Team Drugzani is a construction firm providing renovation and building services. Offered services include conversions, painting and plastering, insulation, masonry and flooring work, as well as facade and garden design.

Andres Ziörjen GmbH 

Basel · Since 2018

The core activity of Andres Ziörjen GmbH is the painting trade, i.e. the execution of painting work and related services.

ansgar staudt architekten sia gmbh 

Basel · Since 2016

The company's core activity is the planning, development and realization of architectural projects, particularly in the area of residential and commercial buildings, as well as the renovation and revitalization of existing buildings, often with a focus on energy efficiency and historic preservation.

Aquatec Kanalsanierungen AG 

Basel · Since 2008

Aquatec Kanalsanierungen AG is a company of the Marquis Group offering trenchless sewer and pipe rehabilitation, including work using the Inliner technique. Services include CCTV inspections (Kanal‑TV), condition assessments, rehabilitation planning and quality control with test reports.

ARC.GES GmbH 

Basel · Since 2015

ARC.GES GmbH is an architectural practice that designs renovations and new-build projects for single- and multi-family housing as well as social facilities. The practice provides the full project scope from concept studies and permit applications to construction documentation, tendering and site supervision.

Architeam 4 AG 

Basel · Since 1994

The core activity of Architeam 4 AG is the planning and realization of architectural projects, particularly in the area of residential and commercial buildings, schools, university buildings and other public institutions. The company also offers services in the field of renovation and refurbishment of existing buildings.

Architekturbüro Berrel 

Basel · Since 1985

Arno Wolf GmbH 

Basel · Since 2015

Arno Wolf GmbH produces handcrafted design objects and sells accessories, furniture and decorative items such as stars and houses. The range draws on traditional forms reinterpreted for contemporary use and is offered via an online shop and a showroom.

ArtInitiative Switzerland Stéphane Decor 

Basel · Since 2020

The core activity of ArtInitiative Switzerland is the production of musical events, particularly concerts of symphonic and chamber music, featuring internationally renowned artists.

Astrid Kübli Konservierung und Restaurierung von Möbeln und Holzobjekten 

Basel · Since 1993

The company's core activity is the restoration and conservation of antique furniture and wooden objects.

A-Tech & Consulting AG 

Basel · Since 1975

The core activity of A-Tech & Consulting AG is real estate development, particularly in buyer consulting, sales and construction of real estate. The company provides personal consulting for buyers and sellers, supports financing and evaluation of construction projects and coordinates all trades for the construction of real estate.

AWS Medien GmbH 

Basel · Since 2019

The company's core activity is the creation and publication of journalistic content, in particular texts such as interviews, portraits, columns, analyses and investigative stories, as well as the management of media teams at events.