Our team

Matthias Wittenburg

Matthias Wittenburg
Managing Partner

Following over 25 years in international banking, he founded a corporate consulting firm in 2017 with the aim of assisting medium-sized enterprises in their quest to secure investors or successors. Over time he realised how inefficient these processes tend to be. This motivated him to create COMPANYLINKS in 2018.

Following initial banking training Matthias obtained a Master’s degree in Business Administration from Cardiff University. He is also a graduate of the Oxford Advanced Leadership and Management Programme (OALMP) at the Saïd Business School and took part in the 129th Baden-Baden Entrepreneurs’ Talks.

Apart from running his own business, Matthias is Chairman of the Board of diligent technology and business consulting AG and undertakes various activities on a voluntary basis, e.g. as a guest lecturer at the German Armed Forces Leadership Academy and Arbeitskreis Evangelischer Unternehmer, as well as being the Honorary Consul to the Republic of Namibia in Hamburg.

What he likes about COMPANYLINKS: being able to work with a great team to set up something that the market has really been missing!

Dr. Ing. Klaus Lesker

Dr. Klaus Lesker is Managing Partner at DIAG Deutsche Industrieanlagen AG.

He previously held long-term managerial positions in industrial companies, for example on the executive board of MPC Investment, as Chairman of Ferrostaal GmbH, and as a member of the executive board of subsidiaries of Fresenius and Lurgi.

After studying and completing a PhD at RWTH Aachen University, he began working as an engineer for Krupp Uhde.

Dr. Lesker is an investor in COMPANYLINKS and supports our company with his extensive network

Helmut Olivier

Helmut Olivier

Helmut Olivier has over 30 years’ experience in international banking. He previously worked for JP Morgan, CSFB and Lehman Brothers in New York, London and Frankfurt managing numerous business divisions in securities trading and capital markets with corporate clients. Helmut was a member of the management board at Lehman Brothers Bankhaus AG since 1998. After the parent company went into insolvency, he oversaw the liquidation of the German subsidiary over a period of almost 10 years, achieving an insolvency dividend of 100%.

In addition, Helmut was a member of the supervisory board of the Eurex exchange and a member of the board of the Association of Foreign Banks in Germany. He is currently Deputy Chairman of Deufol SE, a leading manufacturer of packaging for industrial products. Helmut is an investor in digitalisation companies and a consultant for a London-based company dealing in supply chain financing solutions.

He has a degree in Business Administration from Goethe University in Frankfurt.

What he likes about COMPANYLINKS: Here we use digital tools to make what tends to be a rather analogue, ‘old-world’ process better, faster and more cost-effective.

Hans-Jörg Schmidt-Trenz

Hans-Jörg Schmidt-Trenz

Professor Hans-Jörg Schmidt-Trenz serves chambers of industry and commerce as well as industry associations at COMPANYLINKS.

He currently holds various positions on business-related committees. Prof. Hans-Jörg Schmidt-Trenz has been a Member of the Board of Trustees for HASPA Hamburger Sparkasse for two decades, as well as being a member of the board of directors at Baloise AG, the Swiss parent company of Basler Versicherungs AG. Additionally he is a member of the advisory board for the Hanse Merkur Insurance Group. Furthermore he plays an important role in the worldwide network of chambers of industry and commerce. Moreover is a member of the General Council and Executive Committee of the INTERNATIONAL CHAMBER OF COMMERCE in Paris, Chairman of the Working Group of CEOs of European Chambers of Industry and Commerce, and a representative and consultant for the Hamburg Chamber of Commerce.

Professor Schmidt-Trenz is the Founding President of the HSBA Hamburg School of Business Administration (since 2004) and holds a professorial chair in Economics at the University of Hamburg (since 2008). He has been an Associate Professor at Saarland University since 2000. He completed his degree in Economics there and at the University of Michigan, Ann Arbor, USA. His academic interests focus on international economic relations, the economics of the third sector, and economic analysis of law.

Professor Schmidt-Trenz was Chief Executive of the Hamburg Chamber of Commerce from 1996 to 2017. During this time he was a member of the supervisory boards of Flughafen Hamburg GmbH and Hamburg Messe und Congress GmbH, a member of the board of the Northern Chamber of Industry and Commerce (from 2000) and a member of the broadcasting board of Norddeutscher Rundfunk (until 2013). Prior to that he was Managing Director of the Karlsruhe Chamber of Industry and Commerce from 1988 to 1995, a capacity in which he oversaw facilities such as the Technologiefabrik Karlsruhe, the first entrepreneur-oriented technology centre in Germany.

What he likes about COMPANYLINKS: Instead of taking an attitude of ‘we just have to’, what we do here is highly effective: we provide rapid, on-target, systematic matching results to those looking to invest in medium-sized companies. Many people, especially in business development institutions, have been eagerly awaiting this.

Christoph Baumgärtner

Christoph Baumgärtner
Senior Relationship Manager

At COMPANYLINKS Christoph Baumgärtner is in charge of institutional and strategic investors, consultants and vendors.

Over his 30-year career, Christoph has gained considerable project and management experience in corporate finance/M&A consulting (7 years at M.M. Warburg & CO), private equity (12 years at GBK Beteiligungen AG and HANNOVER Finanz GmbH) and as a managing partner of a medium-sized production company in the food industry following an MBI (25 million euro turnover, 150 employees).

After training as a reserve officer in the Army Reconaissance Troops and as a banker, he gained a degree in Business Administration in Göttingen and Cologne.

He participated in the 117th Baden-Baden Entrepreneurs’ Talks. He is a longstanding member of the Industry Committee of the Lüneburg-Wolfsburg Chamber of Industry and Commerce and was appointed Commercial Judge at Hamburg District Court.

What he likes about COMPANYLINKS: Its dynamism, experience, team spirit and relevance!

Ursula Blum

Ursula Blum

Ursula Blum is responsible for accounting at COMPANYLINKS.

After training as a banker at First National City Bank in Frankfurt, she gained extensive professional experience during her decades working in the commercial sector, as an executive assistant and in financial accounting. She has worked in the disposal sector, the commercial vehicle trade, in international haulage and, most recently, at a leading manufacturer of food supplements.

She completed an evening course at the BBZ Fulda alongside her job, graduating with a degree in Business Administration CCI.

What she likes about COMPANYLINKS: Being able to take on a responsible role to support a proficient team.

Dr. Sabine Dembkowski

Dr. Sabine Dembkowski
UK Representative

Dr Sabine Dembkowski works from London, helping COMPANYLINKS to establish and expand its presence in the UK.

She has over 20 years’ professional experience in international strategy and management consulting as an executive coach and board advisor and as a freelance entrepreneur.

Her roles have taken her from the Ford Motor Company, A.T. Kearney and the Monitor Company to the London Business School and two self-founded consulting firms with an emphasis on executive coaching and board audits in demanding M&A situations and private equity environments.

Sabine studied Business Administration in Cologne and has a PhD from the Bristol Business School in England.

What she likes about COMPANYLINKS: A great team, experienced colleagues and an unbeatable CHO.

Axel Hochgesand

At COMPANYLINKS Axel Hochgesand is in charge of institutional and strategic investors, consultants and vendors.

For more than 25 years, Axel has worked on successful national and international Private Equity & M&A transactions.

After completing his training in Foreign Trade and Studies in Business Administration he held various positions at BHF Bank (Industrie-Beteiligungs-Gesellschaft) and Deutsche Bank (DB Investor), where he successfully led Businesses through Private Equity transactions. As a next step in his career he was responsible for many national and international financial advisory mandates during his time at Arthur D. Little Capital Partners, CinCap International and CORFINA AG.

What he likes about COMPANYLINKS: It gives an answer to Digitization in the field of M&A which is long overdue. Through professional digital matching the chances are much higher to fulfil the current challenges of many companies.

Georg Holzach

Georg Holzach works on websites, social media profiles and lead campaigns to reach out for company owners who would offer equity for fresh capital from investors.

He has been doing marketing for Regiepast Media Production for years, as well as moderating top level conferences of companies, associations and trade fairs on topics like digitalization, medtec, biotec, energy, mobility, education and politics.

Georg used to host 14 tv formats in German networks for large national, regional and special interest audiences. As a lecturer at ten different schools of higher education he developed a video feedback training method, that leads managers to come across stronger.

What he likes about COMAPNYLINS: Being able to help companies and their jobs to survive and grow through times of crisis and change.

Bohdan Hrinchenko

Bohdan Hrinchenko is an analyst at COMPANYLINKS. His focus is on research and analysis of potential investors.

He has gained experience in due diligence of stocks at a local Kyiv investment fund and worked as a day trader on the stock exchange in a US company.

Bohdan Hrinchenko graduated from Kyiv-Mohyla Academy with a bachelor’s degree in economics.

What he likes about COMPANYLINKS: What struck me the most, is that COMPANYLINKS lended a helping hand at a difficult time for me. In addition, I am working alongside true professionals of the industry.

Ineke Jäger
Account Manager

Ineke Jäger is an account manager at COMPANLINKS. Her focus is on the cooperation with our extensive network of consultants.

She gained experience in the M&A business and in setting up databases at a management consultancy in Hamburg, where she also worked in customer support.

Ineke Jäger completed an apprenticeship as a bank clerk and then earned a bachelor’s degree in economics at the Carl-von-Ossietzky University in Oldenburg and a bachelor’s degree in management at the Université Nice Sophia Antipolis. She is currently studying in the part-time Master’s program in International Management at the International School of Management.

What she likes about COMPANYLINKS: Strengthening the M&A process with digitalized solutions, identifying potentials and further expanding her knowledge in a dynamic team.

Jan F. Kallmorgen
Public Affairs Advisor

Jan Kallmorgen supports COMPANYLINKS und and our clients in government relations and public affairs topics.

He is founder and CEO of Berlin Global Advisors (BGA). With a high calibre team of more than 50 professionals, BGA is one of the leading political consultancies.

Jan Kallmorgen previously worked for the World Bank, Goldman Sachs, and the German Council on Foreign Relations.

What he likes about COMPANYLINKS: This is the place to find corporate finance professionals.

Panja Lützenkirchen

Panja Lützenkirchen
Relationship Manager

Panja Lützenkirchen is responsible for onboarding our MBI candidates.

She conducts structured interviews in which she discusses the candidates’ expectations, interests, knowledge and capabilities in order to identify eligible matches for suitable companies.

After training as a banker, Panja earned a degree in Business Administration with a focus on international management, HR and business psychology from the University of Hamburg.

She worked at Dresdner Bank in Hamburg and Frankfurt for 11 years, and at DaimlerChrysler in Stuttgart, where she held positions related to HR marketing and executive management development. Following that, she dedicated herself entirely to her role as ‘family manager’.

What she likes about COMPANYLINKS: Bringing together exciting people and companies who would never have found each other without COMPANYLINKS.

Tobias Pelzer

Tobias Pelzer
North Rhine-Westphalia Representative

Tobias Pelzer is the owner of the medium-sized consultancy firm Unternehmerbrücke and a small logistics company. At COMPANYLINKS he attends to the needs of associated companies, strategic investors and sellers.

In 2011 Tobias sold a fifth-generation family-run food business with 120 employees which he had previously headed to a strategic buyer. Previously, he was Managing Director of two companies in Singapore and Hamburg, a member of the M&A team for an MDAX industrial company, and worked for Treuhandanstalt. Thanks to this experience, he is well-versed in transfers of undertakings and takeovers and familiar with both sides of the equation. Since 2011 he has provided extensive advice on corporate transactions several times a year, focusing on the interface between larger groups and medium-sized companies.

Tobias is an industrial engineer (TU Berlin), Certified Valuation Analyst (CVA), Negotiator (EBS) and Interim Executive (EBS).

What he likes about COMPANYLINKS: That now medium-sized companies are generally sold just once, and more effectively.

Dr. Magnus Sedlmayr

Dr. Magnus Sedlmayr
Switzerland Representative

Dr Magnus Sedlmayr assists COMPANYLINKS with establishing and extending its presence in Switzerland.

He has more than 30 years of professional experience in international banking, as a CFO in major corporations and as a freelance entrepreneur.

His career has taken him from Goldman Sachs and the Bankers Trust to what is now E.ON and two self-founded companies focusing on M&A, private equity, financing and renewable energy.

He is an active member of the Board of Directors at a Swiss medium-sized holding and a Swiss hedge fund.

Magnus has a Master’s degree in Economics from the University of St Gallen, an MBA from the University of Chicago and a PhD in Economics from the University of Budapest.

What he likes about COMPANYLINKS: Highly evolved, vivid data, intelligent use.

Julius Wittenburg
Analyst and Webmaster

At COMPANYLINKS Julius Wittenburg supervises and develops the website. Additionally he performs a wide range of data analysis to support the team.

Currently he is a full time apprentice at an international wholesaler in Hamburg.

What he likes about COMPANYLINKS: Being surrounded by a competent team on a daily basis to expand his knowledge in M&A and actively adding value to the team.


Sabine Wittenburg

Sabine Wittenburg
Enterprise Resource Manager

Sabine Wittenburg is responsible for enterprise resource management and finance & controlling at COMPANYLINKS. Her duties include internal coordination, HR management, administration and ac

She worked at Deutsche Bank in Frankfurt and New York for 12 years, including in the areas of equity research and issues trading for equity and borrowed capital (syndications).

Following her training in banking, Sabine gained a degree in Business Administration with a focus on international finance at the Frankfurt School of Finance & Management and at the Stern School of Business at New York University.

What she likes about COMPANYLINKS: That as a team we form a great pool of both professional and life experience.


CHO (Chief Happiness Officer)

As our CHO, Amy has the very important task of ensuring a good atmosphere at COMPANYLINKS. Her full-on charm and refreshing sense of humour means that she can always get her colleagues on her side.

She has also obtained special qualifications in patient listening, swapping toys for food, bag checks and sock theft. She fulfils her duties with the utmost determination.

Amy studied boundless enthusiasm and honed her tireless instinct for play at Bark University, Labrador Islands, and has a Master’s degree in learning new tricks. In her free time Amy likes jogging, swimming and chasing things.

What she likes about COMPANYLINKS: That everyone’s in such a good mood.