Why Did Euro Tech Holdings (CLWT) Stock Jump Over 12% After Hours? - Euro Tech Holdings (NASDAQ:CLWT)

Euro Tech Holdings jumped 12.17% to $1.76 after the bell, extending a 30.83% intraday gain as it announced Sea Clean AS as a strategic partner to deploy a next-generation hybrid Ballast Water Port Reception & Treatment Facility in Norway. Sea Clean will provide land adjacent to a seaport and on-site services, with the mobile facility slated for dispatch to Sea Clean’s Torvasted port site in early July. Euro Tech plans to present the system at SMM 2026 in Hamburg (Sept. 1–3) to drive European growth. Market capitalization sits near $11.64 million; 52-week range is $0.99–$2.68.