IDYA: Ideaya Biosciences Inc insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 2 sales totaling $985K in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-10-06 | Hata Yujiro S | CEO | $955K | yes |
| 2026-10-06 | Hata Yujiro S | CEO | $31K | yes |
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-08-14 | New 13G stake | Baker Bros. Advisors LP | 5.20% | SEC | |
| 2026-07-31 | New 13G stake | Vanguard Capital Management | 5.08% | SEC |
Institutional ownership (Q2 2026)
286 institutions reported holding $3.71B of Ideaya Biosciences Inc on Form 13F (254 the quarter before). 64 opened a new position and 34 sold out. Shares held by institutions: +8%.
| Largest holders | Shares | Value |
|---|---|---|
| FMR LLC | 14,109,431 | $525.86M |
| BlackRock, Inc. | 8,893,260 | $331.45M |
| Jupiter Topco LLC | 8,579,881 | $319.73M |
| Capital Research Global Investors | 5,344,701 | $199.20M |
| BAKER BROS. ADVISORS LP | 5,010,030 | $186.72M |
| STATE STREET CORP | 4,548,911 | $169.54M |
| VANGUARD CAPITAL MANAGEMENT LLC | 4,132,646 | $154.02M |
| Logos Global Management LP | 3,000,000 | $111.81M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2,715,391 | $101.20M |
| DEERFIELD MANAGEMENT COMPANY, L.P. | 2,714,503 | $101.17M |
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