Brief
AI Firm Sierra Signs 94K-SF Deal at Rockrose’s 11 East 26th Street
An artificial intelligence firm that provides businesses with customer support is opening offices in Midtown South. After announcing in May 2025 that it would establish a New York City presence, Sierr

Summary
An artificial intelligence firm that provides businesses with customer support is opening offices in Midtown South.
After announcing in May 2025 that it would establish a New York City presence, Sierra has signed a 94,145-square-foot lease at Rockrose Development’s 11 East 26th Street, according to a monthly Manhattan office report from Colliers.
The deal represents […]
Source
- Commercial Observercommercialobserver.com

