San Francisco’s Historic 140 New Montgomery Nears Full Occupancy

CBRE and Pembroke are pleased to announce that Reflection AI, an AI start‑up building frontier open‑source models, and A*, an early-stage venture capital firm backing outlier founders from idea to IPO, have together leased 30,000 sq. ft. at 140 New Montgomery Street in San Francisco. With these new leases and the renewal of existing tenant Calendly, the building is now 94% leased, leaving only one office floor available.

These recent commitments reflect the strong leasing momentum at 140 New Montgomery. In 2025 alone, more than 58,000 sq. ft. were leased as companies across AI and next‑generation technology sectors continued to prioritize high‑quality, collaborative workplace environments.

“Pembroke’s hands-on, customer-centric approach has been instrumental in successful leasing at 140 New Montgomery,” said Stacey Spurr, senior regional director at Pembroke. “Each member of the team leans in to support a positive experience for our new tenants from initial tour to lease execution, through construction management to move-in, and this collaborative engagement continues through partnership during the lease term. We’re thrilled to welcome Reflection AI and A* to the 140 New Montgomery tenant community.”

Since its opening in 1925 as the headquarters of Pacific Telephone and Telegraph, 140 New Montgomery has been a symbol of innovation and forward-looking design. Today, the 26‑story, 300,000 sq. ft. Art Deco tower blends historic character with modern infrastructure, offering a premium workplace experience complete with Shoji Café and Restaurant, private courtyard, locker rooms with showers, bike storage with tune‑up stations, and onsite events and services curated by the building’s Experience Manager.