Relay Therapeutics advances Zovegalisib into Phase 3 trials with Pfizer's Atirmociclib
Relay Therapeutics Inc. shares fell 13.04% as the stock hit a 5-day low amid broader market declines, with the Nasdaq-100 down 0.95% and the S&P 500 down 0.52%.
The company announced plans to advance Zovegalisib in combination with Pfizer's Atirmociclib into Phase 3 trials for the treatment of HR+/HER2- metastatic breast cancer, expected to start in early 2027. This strategic move highlights Relay's commitment to precision medicine, supported by a supply agreement with Pfizer to ensure drug availability for the trial.
The implications of this advancement could enhance Relay's market position in breast cancer treatment, especially given the promising efficacy data showing a 44% objective response rate in earlier trials. However, the current stock decline reflects broader market weakness rather than the potential of the upcoming trials.
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- Executive Stock Transaction: On June 22, 2026, Relay Therapeutics CFO Thomas Catinazzo exercised options and sold 187,163 shares of common stock for approximately $3.18 million, indicating ongoing executive focus on liquidity.
- Shareholding Changes: Catinazzo's direct common stock holdings decreased by 51.33%, from 364,624 to 177,461 shares, yet he retains 223,440 unexercised stock options, maintaining potential upside exposure to the company's future performance.
- Market Performance: Relay Therapeutics achieved a market capitalization of $4.3 billion, with a staggering 500% stock price increase over the past year, reflecting strong growth and investor confidence in the precision medicine sector.
- Clinical Advancements: The company reported promising early Phase 2 data for zovegalisib in patients with PIK3CA-driven vascular anomalies, showcasing a 60% volumetric response rate at 12 weeks and 79% of patients reporting clinical improvement, reinforcing its potential to change treatment paradigms.
- Transaction Overview: On June 22, 2026, Relay Therapeutics CFO Thomas Catinazzo sold 187,163 shares of common stock for $3.18 million at a weighted average price of approximately $16.97 per share, reducing his direct holdings by 51.33% to 177,461 shares, indicating a cautious stance on the company's future performance.
- Options Exercise Context: This sale stemmed from an option exercise covering 169,446 underlying shares, and despite the reduction in common stock, Catinazzo retains over 223,000 stock options, reflecting ongoing interest and potential upside in the company's future.
- Clinical Progress Highlights: In May 2026, Relay reported promising early Phase 2 data for zovegalisib, showing a 60% volumetric response rate in patients with PIK3CA-driven vascular anomalies, with management asserting that these results could
- Clinical Trial Progress: Relay Therapeutics presented phase 2 trial data for zovegalisib in treating vascular anomalies, showing a volumetric response in about 60% of the 20 patients evaluated, indicating potential efficacy in PIK3CA mutation patients and broadening its market applications.
- FDA Breakthrough Therapy Designation: Zovegalisib received FDA breakthrough therapy designation for PIK3CA-mutant HR+/HER2- advanced breast cancer, highlighting its clinical potential in oncology and the ability to assist approximately 140,000 patients, thereby boosting investor confidence.
- Diverse Development Pipeline: In addition to zovegalisib, Relay is developing three other therapies, including RLY-8161, a-Gal, and Lirafugratinib, targeting tumors and rare diseases, showcasing the company's extensive positioning in the biopharmaceutical sector and future growth potential.
- Strong Financial Position: Relay reports approximately $642 million in cash and cash equivalents, projected to fund operations into 2029, significantly reducing the financial risks associated with clinical trials and providing a solid foundation for long-term development.
- Clinical Trial Progress: Relay Therapeutics' lead therapy, zovegalisib, demonstrated a volumetric response in approximately 60% of patients in its phase 2 trial for vascular anomalies, indicating potential therapeutic effects in PIK3CA mutation patients and possibly expanding its market applications.
- Strong Financial Position: The company currently holds about $642 million in cash and cash equivalents, projected to fund operations into 2029, providing ample financial support for clinical trials and reducing reliance on volatile capital markets.
- FDA Breakthrough Therapy Designation: Zovegalisib has received breakthrough therapy designation from the FDA, highlighting its potential in treating HR+/HER2- advanced breast cancer patients, with an impressive median progression-free survival of 11.1 months in heavily pretreated patients, boosting investor confidence in its future.
- Broad Market Potential: Relay's treatment options target approximately 140,000 HR+/HER2- breast cancer patients and 170,000 patients with vascular anomalies, showcasing significant application potential within large patient populations, which could lead to substantial market opportunities for the company.
- Clinical Trial Data: Relay Therapeutics' phase 2 trial for zovegalisib in treating vascular anomalies showed a volumetric response in about 60% of the 20 patients evaluated, indicating potential efficacy in PIK3CA mutation patients and possibly expanding its market applications.
- FDA Breakthrough Therapy Designation: Zovegalisib received FDA breakthrough therapy designation for PIK3CA-mutant HR+/HER2- advanced breast cancer, demonstrating an impressive median progression-free survival of 11.1 months in heavily pretreated patients, enhancing its clinical outlook.
- Strong Financial Position: Relay Therapeutics reported approximately $642 million in cash and cash equivalents, bolstered by a successful IPO in 2020, providing ample funding for future clinical trials projected to last until 2029, ensuring operational stability.
- Diverse Drug Pipeline: In addition to zovegalisib, Relay is developing RLY-8161 for NRAS solid tumors, a-Gal for Fabry disease, and Lirafugratinib licensed to Elevar Therapeutics, showcasing its diversified approach in the biopharmaceutical sector.
- Offering Size: Relay Therapeutics announced a public offering of 22.92 million shares at $12.00 per share, with gross proceeds anticipated to be around $275 million, indicating strong market interest in the company's equity.
- Underwriting Arrangement: The offering is managed by Jefferies, TD Cowen, Goldman Sachs & Co. LLC, and Guggenheim Securities, with Raymond James as the lead manager, reflecting robust support from top financial institutions in the industry.
- Additional Share Option: The company has granted underwriters the option to purchase an additional 3.44 million shares within 30 days, enhancing the offering's flexibility and potential funding size, which could provide more capital for future R&D and operations.
- Expected Closing Date: The offering is expected to close around May 22, 2026, pending usual conditions, providing investors with a clear timeline to assess their investment opportunities.











