Sergio Lopez-Pineiro designs and writes about gaps found in everyday spaces and appearing due to mismatched relationships between social structures and spatial organizations. As the founder of Holes of Matter, he gives form to these gaps in buildings, landscapes, and cities.

Lopez-Pineiro graduated from ETSAM (Escuela Técnica Superior de Arquitectura de Madrid) in 1998 and received his M.Arch. degree from Princeton University in 2004, where he was awarded the Suzanne Kolarik Underwood Prize. A registered architect in Spain, Lopez-Pineiro has worked at No.mad (Madrid, 1998-2000) and at Foreign Office Architects (London, 2000-2002).

Lopez-Pineiro is a Lecturer in Landscape Architecture at the Harvard Graduate School of Design, where he held the 2014-15 Daniel Urban Kiley Fellowship. He has taught widely, primarily at the University at Buffalo, where he was the 2006-07 Reyner Banham Fellow. His work has been supported by several institutions such as the New York State Council on the Arts (NYSCA) and The MacDowell Colony, and has been published and featured in MAS Context, Bracket, arq: Architecture Research Quarterly, Places, 2G, and the Boston Globe, amongst others.