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Dorset Management Corporation
Dorset Management Corporation was established in 1984 in Syosset, New York, as the investment and holding vehicle for the wealth generated by Dorset...
Dorset Management Corporation
Dorset Management Corporation was established in 1984 in Syosset, New York, as the investment and holding vehicle for the wealth generated by Dorset Group, founded that same year by Dutch entrepreneur Henk Haaring. Haaring built the group from an import business for Daltec pig-feeding equipment into a developer and manufacturer of specialized machinery and electronics. The family office today stewards capital originating from the group's underlying industrial operating businesses. The principal source of capital is the Dorset Group's three operating divisions: Dorset Green Machines, a market leader in biomass drying and pelleting equipment; Dorset Identification, which develops RFID-based electronics for animal identification, access control, hospital applications, sport timing, and smart irrigation; and Dorset Farm Systems, producing air-cleaning and pig-farm equipment. The family office deploys capital through direct investments that often align with these operational competencies, including an established presence in China via Henan Dusan Biomass Technology and a joint venture or subsidiary footprint spanning Turkey, Brazil, Chile, and the United Kingdom. The investment posture favors control and operational adjacency rather than passive minority positions. The group is managed by three directors — Henno Haaring alongside Rob Janssen and Rik van Koersveld — with global sales and service offices in Germany, Italy, Turkey, and the United States. While AUM and total deployment figures remain undisclosed, the underlying operating group generates cash flows from industrial equipment sales, installation, and service across more than 30 countries. Dorset Group maintains production, engineering, and R&D from its headquarters in Aalten, Netherlands, while Dorset Management Corporation remains the legal entity in Syosset that consolidates ownership across the holding structure. In 2025, the firm continued to exhibit at international trade fairs, the most common channel through which it meets buyers and partners for its core machinery lines. What sets Dorset apart structurally is its full-spectrum integration: research and development, engineering, production, installation, sales, and service all sit inside the same group. That integration means the family office doesn't function as an allocator to external managers but as a direct holding company reinvesting in adjacent industrial technologies. The succession structure is a multi-director model — Haaring family member Henno Haaring shares management authority with two external executives, an arrangement that embeds non-family governance at the top of a family-controlled industrial group.
General information
Firm type
Single Family Office
Year founded
1984
AUM
Undisclosed
Location
Region
North America
Country
United States
City
Syosset
Corporate office
Syosset, NY, United States
Additional offices
Aalten, Netherlands · Birmingham, United Kingdom · İzmir, Turkey · Holambra, Brazil · Santiago, Chile · Zhumadian City, China
Principals
Henno Haaring
Managing Director
Rob Janssen
Managing Director
Rik van Koersveld
Managing Director
Sector focus
Frequently asked questions
Who runs investment decisions at Dorset Management Corporation?
The firm's website lists three group Managing Directors — Henno Haaring, Rob Janssen, and Rik van Koersveld — as the collective management of Dorset Group. There is no separate disclosed investment committee, so it is likely this same trio oversees capital allocation from the family office alongside their operational responsibilities.
Does Dorset Management invest in external funds or only directly?
Dorset does not publicly market itself as a limited partner in external funds. Its operating model is built on wholly owned subsidiaries and direct international branches — including offices in the UK, Turkey, Brazil, Chile, and a Chinese entity, Henan Dusan Biomass Technology — which suggests it prefers direct operational investments over fund commitments.
What sectors does Dorset Management explicitly avoid?
No explicit negative sector list has been published. However, all disclosed divisions and subsidiaries operate within industrial processing, agricultural technology, air-cleaning, and RFID applications, implying the office stays tightly coupled to these adjacencies and does not seek exposure to software, financial services, or healthcare.
Where does the underlying wealth come from?
The wealth originates from Dorset Group, an industrial manufacturer founded in 1984 by Henk Haaring. The group started by importing pig-feeding systems and expanded into developing and producing biomass drying equipment, RFID electronics, and air-cleaning systems for livestock operations, now selling into more than 30 countries.
How is Dorset Management Corporation related to Dorset Group BV?
Dorset Management Corporation in Syosset, New York, serves as the holding entity for the Haaring family's ownership of the Dorset Group, whose operational headquarters and principal R&D, engineering, and production are based in Aalten, Netherlands under Dorset Group BV. The US corporate entity consolidates group ownership, while each division maintains its own legal subsidiary in the Netherlands.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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