Cooley LLP‘s tax team provides comprehensive coverage across all transactional tax issues, ranging from cross-border M&A, securitizations, venture capital, restructurings, and private equity investments. The team is best known for its strength in life sciences and technology sectors, frequently advising leading pharmaceutical and biotech companies as well as digital services. Based in San Diego, practice head Todd Gluth has longstanding experience in the life sciences sector and often handles complex cross-border M&A deals. In Maryland, Eileen Marshall is best known for her expertise in convertible notes offerings and tax integrated call spreads for leading tech companies. Alexander Lee, in Los Angeles, stands out for his work in LATAM and also in novel crypto and digital asset mandates. Timothy Shapiro, in Palo Alto, and Rick Jantz, in Los Angeles, are other key names.
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Key clients
- Andreessen Horowitz
- Battery Ventures
- Boston Celtics
- Draft Kings
- Dutch Bros.
- Jazz Pharmaceuticals
- NVIDIA
- Qualcomm
- Sazerac
- Snowflake
- Travere Therapeutics
- Uber Technologies Inc.
Work highlights
Cooley advised the Boston Celtics and the Grousbeck family – the majority stakeholders of Boston Basketball Partners, which owns the American professional basketball team – in connection with their agreement to sell the Celtics to an investor group led by William Chisholm. Upon closing in August, Chisholm took ownership of at least 51% of the team, with full control anticipated by 2028, potentially bringing the total valuation to $7.3 billion — the largest ever for an American professional sports team.
Cooley advised Uber Technologies (NYSE: UBER), a technology platform that uses a massive network, top technology, operational excellence and deep product knowledge to power movement from Point A to Point B, onits offering of $1 billion principal amount of 0% exchangeable senior notes due 2028. Uber also granted the initial purchaser an option to purchase up to an additional $150 million principal amount of the notes. The notes are exchangeable into shares of Class A common stock of Aurora Innovation.
Cooley advised Andreessen Horowitz (a16z) in connection with its Venture and Growth 2025–2026 fundraise, a landmark $20 billion megafund that drew strong global interest amid surging demand for U.S.-based AI startups. The fund positions a16z to continue backing transformative companies at the forefront of artificial intelligence and emerging technologies.
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Eileen Marshall
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Timothy Shapiro
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Rick Jantz
Practice head
Todd Gluth
Other key lawyers
Eileen Marshall; Alexander Lee; Timothy Shapiro; Rick Jantz