Olmstead Properties found a tenant for its 10th floor space at 575 Eighth. Net@work signed a lease for the entire 10,500 square feet. It is moving out of the 14th floor of 1375 Broadway where it occupied 6,000 square feet. The building owner, Olmstead Properties, represented itself. Daniel Breiman was the Olmstead agent on the deal. Matthew Feigen and Brian Waterman of Newmark and Co represented the tenant.