Who we are
Our commitment: tailored solutions — clear, efficient and forward-looking.
We combine sound legal expertise with personal advice and a strong focus on practical solutions. This enables us to provide clarity, identify opportunities and develop strategies suited to your individual situation.

Attorney-at-law Sheila Pfenninger, M.A. HSG in Law and Economics, registered in the lawyers’ register of the canton of Schwyz
About Sheila C. Pfenninger
Sheila C. Pfenninger is a founding partner of Müller & Pfenninger Rechtsanwälte GmbH and practises as an attorney-at-law. She completed both her bachelor’s and master’s degrees in Law & Economics at the University of St. Gallen (HSG) with outstanding academic results (magna cum laude). During her studies and professional practice, she focused on private law, particularly family, inheritance and contract law, corporate transactions and emerging legal questions concerning blockchain technology and AI. As an expert in debt enforcement and bankruptcy law, she also has specialist knowledge in representing debtors and creditors and enforcing and defending claims in bankruptcy, composition and debt enforcement matters.
Her career began at a commercial law firm in Zurich, followed by legal counsel roles in various businesses. After qualifying for the bar in the canton of Zurich, she is now registered in the lawyers’ register of the canton of Schwyz.
Alongside her legal practice, Sheila C. Pfenninger regularly shares her expertise through talks and presentations. Her previous engagements include contributions at the World Economic Forum (WEF) and at renowned private banks. Her work focuses particularly on legal questions at important life transitions and forward-looking wealth planning.
Her work combines legal precision with commercial understanding and a strong focus on practical solutions. Central to her approach are personal, trusting cooperation and sustainable strategies suited both to the legal position and to her clients’ individual objectives.
Education and qualifications
Attorney-at-law (registered in the lawyers’ register of the canton of Schwyz)
Admission to the bar in the canton of Zurich
Former Legal Counsel
Master of Arts in Law and Economics HSG
Bachelor of Arts in Law and Economics HSG

Attorney-at-law Samuel A. Müller, M.A. HSG in Law, registered in the lawyers’ and notarial registers of the canton of St. Gallen
About Samuel A. Müller
Samuel A. Müller is a founding partner of Müller & Pfenninger Rechtsanwälte GmbH and practises as an attorney-at-law and notary. He completed both his bachelor’s and master’s degrees in Law at the University of St. Gallen (HSG) with outstanding academic results (magna cum laude). He is registered in the lawyers’ and notarial registers of the canton of St. Gallen. As a notary he also carries out notarisation and certification at the firm’s St. Gallen office in family and inheritance law (particularly marital and inheritance agreements and wills) and in other private and company law matters — especially company formations, amendments to articles of association and general meetings.
Through his many years as legal counsel to a company listed on the SIX Swiss Exchange and through successfully establishing an investment company focused on private equity and financing brokerage for start-ups and real estate, he has developed extensive legal and business expertise. His experience combines legal competence with a strong understanding of business relationships, commercial interests and strategic decision-making.
His principal practice areas include M&A transactions, advice and litigation in contract and company law, and business consultancy. He assists both businesses and individuals, developing solutions that combine legal requirements with commercial viability. As an expert in debt enforcement and bankruptcy law, he also has specialist knowledge in representing debtors and creditors and enforcing and defending claims in bankruptcy, composition and debt enforcement matters.
His approach is characterised by entrepreneurial thinking, pragmatism and a commitment to developing clear, carefully considered and sustainable solutions even to complex questions.
Education and experience
Attorney-at-law and notary (registered in the lawyers’ and notarial registers of the canton of St. Gallen)
Admission to the bar in the canton of St. Gallen
Former legal counsel to a listed company (SIX)
Master of Arts in Law HSG
Bachelor of Arts in Law HSG
Your choice: in person or online
Through our established online services, we can advise you regardless of location in the familiar surroundings of your own home. With all important documents immediately available to you there, we can address your concerns efficiently, cost-effectively and purposefully — avoiding unnecessary time expenditure and aiming to find the best possible solution for you.
Explain your options.
Our aim is to explain all your options transparently so that you can make an informed, independent decision without uncertainty. The best solution always depends on your individual circumstances, needs and wishes. We therefore provide personal, tailored advice and careful drafting suited to your specific situation. Rather than relying on standardised solutions and off-the-shelf contracts, we take the time to find the right approach together with you.
Bring clarity to uncertainty.
Our greatest motivation is to make access to the law as straightforward and understandable as possible. Legal challenges are often less complicated or intimidating than they first appear. The biggest obstacle is frequently uncertainty about your rights and the options available to you.
This is precisely where we step in: we aim to provide clarity, reduce uncertainty and give you the knowledge you need to make informed decisions. Our website therefore offers numerous free resources — from informative blog articles to practical e-guides. These allow you to access information easily and gain an initial overview of your legal options.
Transparency.
Transparency in pricing and how we work is a top priority. From the outset, we explain our services, costs and next steps clearly. You always know what to expect and benefit from fair, understandable advice without unwelcome cost surprises.
