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

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.

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.

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).

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.
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