Three new signings at H.J. Kalikow’s 101 Park Ave. totaling 77,400 square feet have brought the tower at East 40th Street near Grand Central Terminal to 98% leased.In something of a coup, Peter Kalikow and his Cushman & Wakefield leasing team of John Cefaly and Nicholas Dysenchuk snared a former One Vanderbilt tenant — Cipher Digital, which took the entire top floor’s 26,400 square feet for its relocated headquarters.Kalikow said, “The top floor of 101 Park is a very special