AI-Powered Sales Platform Clay Leases Office Space at The Swig Company’s Mills Building

July 29, 2026

The Swig Company has signed a 44,000 square foot lease at The Mills Building with Clay, an AI-powered go-to-market platform that helps sales and marketing teams enrich customer data, automate prospective research, and personalize outreach at scale.

“The Mills Building continues to attract companies seeking a workplace that reflects their culture and ambitions. Clay’s lease is another example of an innovative business choosing downtown San Francisco to recruit talent, foster collaboration, and position themselves for long-term success. We’re pleased to welcome Clay and look forward to supporting their continued growth,” said Stacia Keisner, Senior Vice President of Asset Management at The Swig Company.

“Through our focused spec suite initiative at the Mills Building, we have leased more than 102,000 square feet of space year to date, representing approximately 21% of the property. We are encouraged by this strong leasing momentum and expect it to continue throughout the remainder of the year and beyond,” said Cory Kristoff, Executive Vice President, Director of Leasing at The Swig Company.

Bart O’Connor, Mark Geisreiter and Hannah Potter of Newmark represented The Swig Company. Maurice (Mo) Spikes, Derek Feinman and Aaron Ellison of Newmark represented Clay.

Built in 1891 and owned by The Swig Company since 1954, The Mills Building combines historical elegance with contemporary efficiency. The building offers onsite parking, a fitness center, a bike sanctuary with storage and maintenance facilities, shower rooms, and a flexible conference center that offers multiple configurations with seating capacity from 7 to 55, with complimentary WiFi. The Mills Building has been LEED Gold certified since 2012 and is also EPA Energy Star certified. In addition, some tenant spaces carry LEED Platinum and FitWel 3-star certifications. 

About The Swig Company:

The Swig Company, LLC, is a privately owned, San Francisco-based real estate operator with a 90-year history of investment, development, partnership and management of commercial real estate properties in major U.S. markets. Founded by Benjamin H. Swig in 1936, The Swig Company is guided by a long-term investment perspective that has proven adept at stewarding investors safely through multiple market cycles. The company’s vertically integrated operational platform, which includes investment, asset and property management, and leasing expertise, uses flexibility, generational thinking and sensitivity to sustainable practices to stay at the forefront of emerging trends in the commercial real estate industry.  For more information, visit: www.swigco.com.