 LEUVEN, Belgium--BUSINESS WIRE--- MTLS--Materialise NV Materialise NASDAQ: MTLS, a leading provider of additive manufacturing and medical software and of sophisticated 3D printing services, announced today that it intends to commence a registered underwritten public offering of 4.0 million ADSs. Each ADS will represent one ordinary share with no nominal value per share. Materialise intends to grant the underwriters a 30-day option to purchase up to an additional 600,000 ADSs. All of the ADSs in 