Harry de Wit
Harry de Wit is an individual investor and company director, best known in water as the non-executive chairman of De.mem (ASX:DEM), an Australian-Singaporean water-treatment company. Andreas Hendrik de Wit is a Hong Kong-based former Fresenius Medical Care Asia-Pacific chief executive. As of 2026, De.mem is the single water company Leviathan tracks for him.
Compiled by Antoine Walter, (don't) Waste Water, from official filings and direct intelligence in Leviathan.
The take
Harry de Wit is a single individual, Andreas Hendrik de Wit, who shows up in this directory because of one water holding rather than a fund. A Dutch healthcare executive who ran Fresenius Medical Care's Asia-Pacific business out of Hong Kong, he came to water through a boardroom: he joined the board of De.mem in April 2023 and became its non-executive chairman in May 2025, taking over from Cosimo Trimigliozzi.
Harry de Wit's water story sits entirely in one company, De.mem, which is listed on the Australian Securities Exchange (ASX). It designs, builds and operates water and wastewater treatment systems for industrial, municipal and residential customers across Australia, Singapore and Germany, and it is the only water company Leviathan tracks for him. The record shows a single holding built up over two transactions, the kind of stake a chairman takes in the business he oversees rather than the deal flow of a professional water fund.
Harry de Wit is, in the language of (don't) Waste Water's scoring, an Occasional water investor, and the label fits. His expertise is dialysis and medical devices, not membranes, and his one water position is a governance role first and an investment second. For anyone scanning water capital he is a useful reminder that not every name in a deal database is a fund, and that some of water's steadier hands sit on boards rather than write cheques.
Water Commitment Score
Compiled from official filings, third-party records, and direct intelligence from investors and founders, in Leviathan · recomputed monthly · as of Jun 2026.
Portfolio · 1 water companies
Invests alongside
Highlighted = profiled on (don't) Waste Water.
Frequently asked
- Who is Harry de Wit?
- Harry de Wit, full name Andreas Hendrik de Wit, is a Dutch corporate executive and company director based in Hong Kong. His career was in healthcare, including as chief executive of Fresenius Medical Care Asia-Pacific, and he now chairs the board of ASX-listed water-treatment company De.mem.
- Is Harry de Wit a venture capital fund?
- No. Harry de Wit is an individual, not a fund or venture firm. He appears in water-investment data through his role at De.mem (ASX:DEM), where he is a shareholder and non-executive chairman. (don't) Waste Water rates his water commitment Occasional, reflecting that single holding.
- What is Harry de Wit's connection to water?
- Harry de Wit's only tracked water connection is De.mem, an Australian-Singaporean company that designs and operates water and wastewater treatment systems. He joined its board in April 2023 and became non-executive chairman in May 2025, succeeding Cosimo Trimigliozzi. Leviathan records no other water companies for him.
- Is this the same Harry de Wit who is a Dutch composer?
- No. This profile covers Andreas Hendrik de Wit, the De.mem chairman and former Fresenius Medical Care executive. He is a different person from Harry de Wit the Dutch composer and sound designer, who happens to share the name. Only the De.mem director has a tracked water investment.