Perform Properties Keeps Clearstead at 999 Third With 14,000 SQFT Upgrade Ahead of Docusign’s 227,000 SQFT Exit

With Docusign preparing to vacate roughly 227,000 square feet at 999 Third Avenue next year, Blackstone-owned Perform Properties has kept a 14-year tenant in the tower, as wealth manager Clearstead trades up to a larger suite on the 43rd floor.