Ideaya Biosciences Inc (IDYA)
Who owns Ideaya Biosciences Inc (IDYA)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 90.4% of the shares are freely tradable; institutional investors hold 101.8%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 15.00 | 13,172,103 | +0.2 | 03/31/2026 |
| BlackRock Inc | 9.62 | 8,442,133 | +2.8 | 03/31/2026 |
| HHG PLC | 8.28 | 7,265,253 | +1.1 | 03/31/2026 |
| Capital Research Global Investors | 5.88 | 5,163,543 | -2.2 | 03/31/2026 |
| Vanguard Group Inc | 5.72 | 5,019,324 | +2.0 | 12/31/2025 |
| Baker Bros Advisors LP | 4.50 | 3,946,515 | +9.1 | 03/31/2026 |
| State Street Corp | 4.31 | 3,781,167 | -8.5 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Fidelity Growth Compy Commingled Pl S | 6.77 | 5,939,397 | +0.1 | 04/30/2026 |
| American Funds SMALLCAP World A | 5.34 | 4,684,432 | -2.3 | 03/31/2026 |
| Fidelity Growth Company Fund | 4.75 | 4,166,928 | +0.0 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 7. Jul 2026 | Ruiz Briseno Andres | Chief Accounting Officer | Sell | 9,550 | 40.01 | 382,131 |
| 7. Jul 2026 | Ruiz Briseno Andres | Chief Accounting Officer | Other | 9,550 | 12.86 | 122,813 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.