Cambridge Semantics is a privately held company headquartered in Boston, Massachusetts with an office in San Diego, California.
Cambridge Semantics was founded in 2007 by Sean Martin, Lee Feigenbaum, Simon Martin, Rouben Meschian, Ben Szekely and Emmett Eldred who all previously worked at IBM's Advanced Technology Internet Group.
[1][2] In 2012, Cambridge Semantics appointed Chuck Pieper as chief executive.
[3] In January 2016, Cambridge Semantics acquired SPARQL City and its graph database intellectual property.
[4] On April 18, 2024, Altair Engineering acquired Cambridge Semantics.