Corporate Law and M&A Laywer in Vienna

Transaction certainty and strategic conflict resolution for entrepreneurs, shareholders, and investors.

Top-Anwaltskanzlei Österreich 2026 DER STANDARD Gesellschaftsrecht M&A

Awarded:

“Top Law Firms in Austria 2026 (Corporate / M&A)” – DER STANDARD

Mario Tiefenbacher LL.M. – Rechtsanwalt für Gesellschaftsrecht in Wien

Sovereignty in Decisive Corporate Phases

Whether structuring a business sale, defending against executive liability claims, or resolving an escalating shareholder dispute: In critical phases, legal precision determines the commercial value of your company.

As a highly specialized unit based in Vienna, we handle complex corporate mandates. Mario Tiefenbacher brings years of experience managing international transactions at top-tier law firms. We do not deliver theoretical memos; we deliver commercially viable, negotiation-proof solutions.

Typical client structures of Tiefenbacher Law:

  • Mid-Market Companies (SMEs) navigating strategic restructurings or M&A buy and sell-side processes.

  • Private Equity Funds & Platform Companies executing buy-and-build strategies and PE roll-ups.

  • Shareholders and C-Level Executives facing crisis scenarios, deadlocks, and liability claims.

Highly Specialized Legal Expertise

We deliberately reject the generalist approach. Tiefenbacher Law exclusively accepts mandates in Corporate Law, M&A, and Litigation, areas where our deep market knowledge and procedural assertiveness provide our clients with a decisive strategic advantage in the Austrian market.

Gesellschaftsrecht

Corporate law

The legal foundation for sustainable corporate growth. We guide clients through complex reorganizations (mergers, spin-offs), holding company setups, capital measures, and structure legally secure, tax-optimized corporate succession plans.

Unternehmenstransaktionen (M&A)

Mergers & Acquisitions (M&A)

End-to-end legal execution of complex share deals and asset deals in the Austrian mid-market. From tactical vendor due diligence to drafting airtight Sale and Purchase Agreements (SPA). Our focus is on deal certainty and transaction speed.

Private Equity

Private Equity & Venture Capital

Strategic deal execution for PE funds, platform companies, and scale-ups. We advise on high-frequency buy-and-build strategies and add-on acquisitions including comprehensive Shareholders' Agreements (SHA).

Gesellschafterstreit & Organhaftung

Corporate Litigation & Disputes

Tactical crisis intervention in deadlocked corporate conflicts. We forcefully represent shareholders and executives in squeeze-outs, the dismissal of managing directors, the challenge of corporate resolutions, and the robust defense against D&O liability claims.

CONTACT

Confidential initial consultation

Complex corporate matters and M&A transactions do not permit delays. I am available to provide an initial confidential assessment and to coordinate your strategic legal approach.

Our Guarantees:

✓ 100 % attorney-client privilege

✓ Strict conflict of interest clearance

✓ Discrete preliminary review

Mario Tiefenbacher LL.M. – Rechtsanwalt für Gesellschaftsrecht in Wien