NEW YORK—Peter J. Solomon Company (PJSC) has signed a lease to occupy the entire 31st floor at 1345 Avenue of the Americas. The firm currently occupies 23,411 sq. ft. at 520 Madison Avenue and is relocating to its new space to accommodate its expansion.

In its 41,819-sq.-ft. lease transaction, PJSC was represented by Neil Goldmacher, vice chairman of Newmark Grubb Knight Frank.

The firm expects to take occupancy of its new space in the first quarter of 2013.

PJSC is an investment banking advisory services firm. In addition to merges and acquisitions, the firm advises companies on restructuring, financings, and proxy and take-over contests.