Expert team

Joachim Hahn
managing director

+49 211 972693-01

  • Strategic M&A project management
  • Negotiation management
  • Strategy development

Joachim Hahn has more than 17 years of experience in structuring, executing and negotiating national and international M&A projects. He has held senior M&A positions at Bayer, E.ON, Bilfinger and DMG MORI. Joachim Hahn has first-hand knowledge of the internal procedures and decision-making processes in large companies. This deep understanding of internal processes and mechanisms and his extensive M&A experience from numerous transactions allow him to offer a consulting concept that is ideally tailored to the client’s needs.

Joachim Hahn has been in charge of national and international corporate acquisitions, divestitures and joint venture projects in Germany, the USA, China, France, Poland, Turkey, Brazil and other countries.

Gary Knott
financial modeling

+49 211 972693-10

  • Financial modeling (integrated M&A and strategic models)
  • Business valuation
  • Data analysis

Gary Knott is a business modeling and Excel expert with more than 25 years of professional experience, many with Deloitte in the UK and Germany. He has developed numerous flexible models for M&A transactions, valuations, strategic planning, project planning/financing, and cash flow planning for clients in a variety of industries. These include large international corporations and mid-sized companies, all of which have benefited from his extensive experience and an approach that is as practical as it is pragmatic.

Dr. Gerrit Lütkeschümer

+49 211 972693-12

  • Business valuation
  • Integrated business plans
  • Financial modeling expert (among other things judicial disputes)

Dr. Gerrit Lütkeschümer has more than 10 years of experience in the valuation of companies in various industries (small, mid and large caps) and for various occasions, such as company acquisitions and disposals.

As a senior manager at the auditing firm Baker Tilly GmbH WPG, he prepared a large number of valuation reports, inter alia, in the context of structural measures under stock corporation and conversion law, such as domination and profit and loss transfer agreements, squeeze outs, and explained them in court hearings where necessary.

Since 2018, Dr. Gerrit Lütkeschümer has been working as a lecturer in the field of business valuation for the Institute of Public Auditors in Germany (Institut der Wirtschaftsprüfer, IDW) and since 2019 he has been working as a professor at the University of Applied Sciences Aachen, among other areas in the field of business valuation.

Sebastian Wiegmann
transaction services

+49 211 972693-11

  • Financial due diligence
  • Vendor assistance
  • Corporate finance
  • Accounting advisory

Sebastian Wiegmann has been working in consulting on national and international projects since 2000. After 7 years of transaction consulting with one of the Big Four accounting firms in Düsseldorf and Dublin, he worked for 3 years as an investment manager with an Irish based private equity holding company. Sebastian Wiegmann is a Chartered Certified Accountant and has been working as an independent corporate and transaction advisor since 2011. He advises companies of various sizes and regularly supports renowned consulting and accounting firms on all topics related to financial due diligence, spin-offs, carve-outs and pro forma financials.

Portrait von Julia Weber, complemus consulting GmbH

Julia Weber
financial modeling

+49 211 972693-17

  • Financial modeling (integrated M&A and strategic models)
  • Business valuation
  • Financial due diligence

Julia Weber has more than 8 years of experience in financial modeling (strategic planning, valuation and M&A models) as well as experience in financial due diligence.
At Deloitte Financial Advisory she advised companies from various industries in the area of financial modeling and financial due diligence. After her consulting activities, Julia Weber gained industry experience at Deutsche Post & DHL Group in the area of Transactions & M&A Audits as well as at Lanxess AG in the area of M&A Controlling.

Phillip Reinartz
project management

+49 211 972693-16

  • M&A project management
  • Post merger integration
  • Commercial due diligence
  • Business planning / financial modeling

Phillip Reinartz has more than 12 years of experience in transaction advisory with a focus on M&A, post-merger integration, coordination of interdisciplinary due diligence projects as well as the execution of commercial due diligence reviews. In his career, Phillip Reinartz has been responsible for a large number of transactions for medium-sized companies, listed groups as well as national and international financial investors (small- and mid-cap). In addition to traditional M&A project management, Mr. Reinartz has extensive experience in commercial due diligence and post merger integration.

Anna Rösch
project management

+49 211 972693-03

  • Project management
  • M&A research
  • Marketing
  • Organisation

Anna Rösch holds a bachelor’s degree in media business with a focus on marketing management as well as a master’s degree in market-oriented business management from the Technical University of Cologne.

During her studies, she already gained professional experience in the B2B as well as the B2C sector in the media, fashion and real estate industries, both in the environment of established companies and with start-ups. Since 2018 she has been working for complemus consulting in the areas of project management, M&A research, marketing and organization.

compliance officer

  • Security
  • Employee motivation
  • Health management

Oskar graduated from the Higher Dog School with honors and has since worked in the field of personal and facility protection.

Our team will keep on growing