Henko Partners is weighing a sale of its minority interest in Quadrante, the Lisbon‑based engineering and environmental consultancy. Sources close to the talks say the transaction could push the firm’s valuation beyond €300 million (about $352 million). A move of this size would mark one of the larger private‑equity exits in Portugal’s tech‑services sector this year, and could attract strategic interest from global infrastructure funds.

Quadrante has built a reputation for delivering large‑scale infrastructure projects across Europe, attracting both public and private clients. Henko’s entry into the market two years ago gave the firm capital to expand its service portfolio, but the minority stake limits its control over strategic decisions. Potential buyers will weigh the company’s pipeline and its exposure to fluctuating environmental regulations, and recent EU sustainability mandates.

If Henko proceeds, the sale could free up capital for new investments or debt reduction, while signalling confidence in Quadrante’s growth trajectory. Existing shareholders may benefit from a liquidity event, and the deal could set a benchmark for valuations of Portuguese engineering outfits. The outcome will likely influence how private‑equity firms approach mid‑market service providers in Southern Europe, for future project pipelines.