Form 3 Filing by Jerry Wong for Euro Tech Holdings Co Ltd

This filing reports initial beneficial ownership of securities by Jerry Wong, identified by CIK 0001368109, for Euro Tech Holdings Co Ltd (CIK 0001026662). Wong, holding the title of CFO and Director, acquired 22,500 stock options with an exercise price of $1.867, expiring on April 18, 2029. The filing also indicates direct ownership of 130,742 ordinary shares following the transaction. The reporting period concluded on March 18, 2026, with the signature dated April 8, 2026.