Corporate and M&A

Legal 500 - Corporate and M&A (Tier 2)

Clients are in good hands’ when turning to CHSH Cerha Hempel Spiegelfeld Hlawati’s ‘very professional, knowledgeable and dedicated’ team for advice on national and international cross-border mergers, reorganisations and transactions. ‘Brilliant lawyer and negotiatorClemens Hasenauer advised OMV on the sale of all of its shares in the Turkish mineral oil distribution company OMV Petrol Ofisi to VIP Turkey Enerji. ‘Very committed and focused tacticianAlbert Birkner, who is ‘very pleasant to work with and goes the extra mile for his clients’, assisted the waste management company Brantner with group structuring and corporate issues. ‘Efficient, flexible and smart’ counsel Sarah Wared has a ‘hands-on approach’.

IFLR 1000 - Mergers & Acquisitions (Tier 1)

In M&A the firm was involved in a number of large cross-border deals, most notably representing Immofinanz in its €604 million acquisition of 26% in CA Immo and OMV on €601 million sale of 49% in Gas Connect Austria, and its €1.36 billion sale of OMV Petrol Ofisi.

Chambers & Partners - Corporate and M&A (Band 1)

What the team is known for Highly respected team with a proven track record in acting for both buyers and sellers on public and private M&A. Offers notable expertise in takeovers involving listed companies. Well known for large-scale mergers and reorganisations, including cross-border matters. Also a popular choice for private equity mandates. Particularly experienced in advising financial services, energy, real estate, and TMT companies. Often acts on cross-border deals involving several jurisdictions, including advising on European corporate structure.

Strengths Sources praise the team's commercial approach, with an interviewee saying that the lawyers are "able to appropriately balance between the risks and opportunities of each and every aspect of M&A transactions," and adding that the team offers "24/7 availability."

Work highlights Advised OMV and OMV Gas & Power on the EUR601 million sale of a 49% stake in Gas Connect Austria to a consortium of Allianz SE and Snam.

Acted for Teufelberger on the acquisition of Redaelli Tecna.


Notable practitioners

Albert Birkner is a top-tier, highly established transactional lawyer with extensive practical knowledge of large cross-border mergers, joint ventures and corporate restructuring mandates. A source says he is "very good technically and equally reasonable, focusing on important elements of transactions," adding that he is "practical and easy to work with." He recently advised RHI on the proposed cross-border merger with Magnesita Refratários that will establish RHI Magnesita. He has particular expertise in the CEE region.

Clemens Hasenauer is one of Austria's leading M&A lawyers, with broad practical experience in handling public and private transactions as well as cross-border joint ventures. "Clemens is a great negotiator. I was very happy with him. He did a very good job in negotiating good compromises," a client says, adding: "He just made it work." He recently advised SABMiller on its planned disposal of several brands in Austria and a number of CEE countries to comply with EU competition requirements. He is triple-qualified in Austria, the US and UK.

Thomas Trettnak is a corporate lawyer advising on transactions and corporate reorganisations, with particular experience in matters involving venture capital and private equity. He recently acted for LifeNet Health on its acquisition of AlloTiss. He is qualified in Austria and the US.




  • The Legal 500 2018: Europe, Middle East & Africa 
  • IFLR 1000  2018 - The Guide to the World's Leading Financial Law Firms 
  • Chambers & Partners 2018, Chambers Europe - Europe's Leading Lawyers for Business