Kelley Drye Opens New San Francisco Office, Accelerating Strategic Growth in California

The law firm expands its California presence with a new office in the Bay Area's financial district.

Mar. 16, 2026 at 3:24pm by Ben Kaplan

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Kelley Drye & Warren LLP has opened a new office in San Francisco, marking an exciting new chapter for the firm and its clients in California. The move strengthens Kelley Drye's ability to offer practical legal guidance and attentive service to businesses operating in one of the country's most important markets. The new office is home to prominent privacy partners Kate Black and Céline Guillou, who bring deep experience with California's regulatory landscape.

Why it matters

The opening of Kelley Drye's new San Francisco office reflects the growing demand for legal services in California, particularly in the areas of privacy, technology, and innovation. The firm's expansion into the Bay Area aligns with its strategy to be closer to clients and attract top local talent.

The details

Located at 345 California Street in San Francisco's Financial District, the new office features flexible meeting spaces for client meetings, industry gatherings, and community events. The office is home to privacy partners Kate Black and Céline Guillou, who both have extensive experience navigating California's regulatory environment. Black previously served as the first head of privacy and data protection at 23andMe, while Guillou was the first attorney hired at the California Privacy Protection Agency's Enforcement Division.

  • Kelley Drye opened its new San Francisco office on March 16, 2026.

The players

Kelley Drye & Warren LLP

A powerhouse law firm with more than 190 years of practice, offering tenacious courtroom advocacy, strategic problem-solving, and savvy deal-making across litigation, regulatory, trade, real estate, bankruptcy, and corporate matters.

Dana Rosenfeld

The managing partner of Kelley Drye, who stated that client demand across California continues to grow in both complexity and scope, and that the new San Francisco office will bring the firm closer to Bay Area clients and strengthen its ability to deliver top-tier legal counsel.

Kate Black

A prominent privacy partner at Kelley Drye, who previously served as the first head of privacy and data protection at 23andMe and now practices at the intersection of privacy, AI, health technology, and cutting-edge innovation.

Céline Guillou

A special counsel at Kelley Drye, who was the first attorney hired at the California Privacy Protection Agency's Enforcement Division, where she reviewed consumer complaints and led investigations. Prior to the CPPA, she was senior privacy counsel at Instacart.

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What they’re saying

“Client demand across California continues to grow in both complexity and scope. San Francisco marks our third California location, bringing us closer to Bay Area clients and strengthening our ability to deliver top-tier legal counsel and attract outstanding local talent.”

— Dana Rosenfeld, Managing Partner, Kelley Drye & Warren LLP (Globe Newswire)

The takeaway

Kelley Drye's expansion into San Francisco reflects the growing importance of California, particularly the Bay Area, as a hub for innovation, technology, and privacy-related legal work. The firm's new office and the addition of experienced partners like Kate Black and Céline Guillou demonstrate its commitment to serving clients in this dynamic and rapidly evolving market.