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Cooley, Latham Steer RNA Drugmaker's Upsized $446M IPO

Reported by Law360
Sep 25, 2026· 2 min read
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Key Takeaways
  • • ADARx Pharmaceuticals, a San Diego-based RNA drugmaker, completed its initial public offering on Friday, September 25, 2026, raising $446 million and beginning public trading.
  • • Cooley LLP and Latham & Watkins LLP jointly steered the IPO, underscoring the involvement of two major life sciences-focused legal practices in the transaction.
  • • The offering adds to a growing wave of recent biotech IPOs, reflecting continued investor appetite for early-stage pharmaceutical companies despite broader market volatility.
  • • ADARx's focus on RNA therapeutics positions the company within a high-growth segment of biotechnology, a therapeutic class that has attracted substantial institutional capital in recent years.
Summary
ADARx Pharmaceuticals completed its initial public offering on Friday, September 25, 2026, raising $446 million and commencing public trading. The San Diego-based biotechnology company was guided through the transaction by Cooley LLP and Latham & Watkins LLP, two prominent legal advisors specializing in capital markets and life sciences transactions.

The $446 million IPO reflects ongoing institutional investor interest in the biotech sector, particularly in companies developing RNA-based therapeutics. RNA drug development has emerged as a priority area for venture capital and institutional investors seeking exposure to next-generation pharmaceutical innovation. The successful completion of ADARx's IPO contributes to a documented uptick in biotech public offerings during this period, suggesting that market conditions remain supportive for early-stage life sciences companies seeking capital through equity offerings.

The involvement of Cooley and Latham & Watkins—both recognized leaders in life sciences M&A and capital markets advisory—signals institutional confidence in ADARx's business model and market potential. These legal advisors typically work with high-growth biotech firms on complex regulatory, IP, and corporate governance matters alongside IPO execution, indicating a sophisticated approach to the company's public market entry.

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Law360 Cooley, Latham Steer RNA Drugmaker's Upsized $446M IPO