Hansi Ziegenhain has specialised in advising listed companies, family businesses and private equity clients on corporate and M&A matters.

His M&A projects in recent years for listed companies include: the acquisition of Axioma Inc. by Deutsche Börse AG  and General Atlantic (2019),  the sale of the Graphite Electrode Business of SGL Carbon to Showa Denko, Tokyo (2016), the sale of trans‑o‑flex Group by Österreichische Post AG (2016), the merger of Coca-Cola Enterprises with Coca-Cola Iberian Partners, S.A. and Coca-Cola Erfrischungsgetränke AG (2015), the acquisition of Erdgas­versorgungsgesellschaft to Thüringen-Sachsen from E.ON by First State Investments (2014), the disposition of the Audiology Group from Siemens to EQT (2014), the sale of Siemens' 50% stake in Bosch-Siemens Hausgeräte (BSH) to Bosch (2014), TenneT's joint venture with Copenhagen Infrastructure Partners regarding the DolWin 3 offshore network connection (2014), the sale of Open Grid Europe (gas transmission grid) by E.ON to a Macquarie led consortium (2012), and the staggered sale of TUI’s stake in Hapag-Lloyd including the Hapag-Lloyd IPO (2012‑15). In addition, he advised MAN during the takeover by Volkswagen (2012).

In advising family businesses, Hansi most recently advised the family shareholders of Renolit SE and RKW SE in connection with the demerger of the group amongst their shareholders (2019), the Hymer family in connection with the sale of Erwin Hymer Group to Thor Industries (2018), Stahlgruber Otto Gruber AG in connection with the sale of Stahlgruber GmbH to LKQ (2017), EQT in connection with the acquisition of a 20 % stake in Otto Bock HealthCare GmbH (2017), the Schön family in connection with Carlyle's acquisition of a minority stake in Schön Kliniken Group (2016), Knorr-Bremse AG in connection with the public takeover of Vossloh (2015),  the public takeover of Haldex (2016) as well as on the Knorr-Bremse IPO (2018) and the Bob Arnold family on the sale of its stake in ARRI to Richter & Frenzel (2012).

Apart from the advice of strategic corporate and family businesses, Hansi also advises private equity investors. In recent years, he has advised numerous private equity clients in connection with so-called "dual tracks" (parallel Trade Sale and IPO). Private equity transactions in which he has assisted include: the sale of a minority stake in the Wittur Group to PSP Investments (2019), the sale of CBR Group by EQT to Alteri Investors (2018), the sale of SAG Group by EQT to SPIE S.A. (2016), the sale of FTE Automotive Group by Bain Capital to Valeo (2016), the sale of Armacell by Charterhouse to Blackstone (2015), the sale of Douglas by Advent International to CVC Capital Partners (2015), the sale of Flint Group by CVC Capital Partners to Goldman Sachs and Koch Industries (2014), the acquisition of Erdgas­versorgungs­gesellschaft Thüringen-Sachsen by First State Investments from E.ON (2014), the acquisition of ista Deutschland GmbH from Charterhouse by CVC Capital Partners (2013), the sale of ista group from CVC Capital Partners to CK Infrastructure (CKI) (2017), the sale of Springer Science+Business Media by EQT to BC Partners (2013), the acquisition of FTE Automotive Group from PAI Partners to Bain Capital (2013), and the sale of Kabel Baden-Württemberg by EQT to Liberty Global (2011).

Since 2007, Hansi has held a teaching position for "Mergers and Acquisitions" at the Ludwig Maximilian University (LMU) of Munich, and in 2014, he was awarded an honorary professorship by LMU. Hansi is a member of the International Bar Association (Corporate and M&A Law Committee). In addition, he gives lectures on Mergers and Acquisitions and Private Equity in Germany and abroad and also gives guest lectures at the University of Michigan.

Hansi is ranked by "Who's Who Legal" in 2018 under the top five leading M&A lawyers in Germany. Since 2013, Chambers has ranked him in the First Tier of leading German lawyers both for Corporate/M&A High End Capability and for Private Equity.


  • Admitted to bar 1991
  • Universities of Regensburg and Munich (Dr. jur.)
  • Tulane Law School, New Orleans
  • University of Michigan (LL.M.)
  • Law firms in Frankfurt am Main and Düsseldorf, 1991-2001
  • Law firm in Munich, 2001-2006
  • Law firm in Washington D.C., 1995-1996


  • Co-Author: Handbook for US-American Commercial, Corporate and Business Law, C.H.Beck Munich, 2001
  • Co-Author: Civil, Commercial and Corporate Law, C.H.Beck Munich, 3rd ed. 2014
  • Co-Autor: Meyer-Sparenberg/Jäckle Beck'sches M&A-Handbuch, C.H. Beck München, 1. Aufl. 2017