Zest Bidco GmbH takes PSI Software SE private

SEPTEMBER 8, 2026

Zest Bidco GmbH (Warburg Pincus) takes PSI Software SE private

TARGET

Energy grid management and industrial production-control software for utility operators, metals manufacturers, automotive suppliers, and logistics companies.

Revenue	€285.5M (FY2025)
Ownership	PE-backed
Investors	—
Headcount	2,380 FTEs
Headquarters	Berlin, Germany
Leadership	Robert Klaffus, Chief Executive Officer
Sell-side advisor	Goldman Sachs Bank Europe SE

ACQUIRER

Zest Bidco GmbH

Holding company indirectly controlled by funds managed by Warburg Pincus LLC, formed as the acquisition vehicle for PSI Software SE

Ownership	—
Parent	Warburg Pincus
Buy-side advisor	JPMorgan

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Zest Bidco GmbH -> PSI Software SE  (2026-09-11)
take_private | Industrial/Manufacturing | announced
Target: Energy grid management and industrial production-control software for utility operators, metals manufacturers, automotive suppliers, and logistics companies.
Website: psi.de
HQ: Berlin, Germany | Ownership: pe-backed | Buyer sponsor: Warburg Pincus
Advisors - Sell-side: Goldman Sachs Bank Europe SE; Buy-side: JPMorgan
Source: Thematic - https://thematichq.com/software/d/zest-bidco-gmbh-psi-software-se.html

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