| $350M | ||
| $217M | ||
| $172M | ||
| $109M | ||
| $107M | ||
| $104M |
Buys | $1,647,890 | 1 | 33 |
Sells | $1,367,528 | 2 | 67 |
| Stein Jeffrey | director | 1 | $1.65M | 0 | $0 | $1.65M |
| Ruiz Briseno Andres | Chief Accounting Officer | 0 | $0 | 1 | $382,131 | $-382,131 |
| Hata Yujiro S | President and CEO | 0 | $0 | 1 | $985,397 | $-985,397 |
IDEAYA Biosciences, Inc. is a precision oncology company primarily dedicated to identifying and advancing targeted therapies, particularly leveraging the concept of synthetic lethality. The firm aims to develop specific treatments for patient groups selected through molecular diagnostic methods. At the forefront of its clinical efforts are two investigational drugs. IDE397, a methionine adenosyltransferase 2a (MAT2A) blocking agent, is currently in early-stage (Phase I) trials for solid tumors exhibiting methylthioadenosine phosphorylase (MTAP) …
Over the last 12 months, insiders at IDEAYA Biosciences, Inc. have bought $1.65M and sold $1.37M worth of IDEAYA Biosciences, Inc. stock.
On average, over the past 5 years, insiders at IDEAYA Biosciences, Inc. have bought $1.65M and sold $7.26M worth of stock each year.
Highest buying activity among insiders over the last 12 months: Stein Jeffrey (director) — $1.65M.
The last purchase of 50,000 shares for transaction amount of $1.65M was made by Stein Jeffrey (director) on 2026‑03‑02.
| 2026-10-06 | Sale | Hata Yujiro S | President and CEO | 26,338 0.0283% | $37.41 | $985,397 | -7.43% | |
| 2026-07-07 | Sale | Ruiz Briseno Andres | Chief Accounting Officer | 9,550 0.0099% | $40.01 | $382,131 | -9.37% | |
| 2026-03-02 | Stein Jeffrey | director | 50,000 0.0583% | $32.96 | $1.65M | +4.96% | ||
| 2024-05-29 | Sale | WHITE MICHAEL ANTHONY | Chief Scientific Officer | 28,500 0.038% | $36.24 | $1.03M | -24.56% | |
| 2024-05-16 | Sale | Hata Yujiro S | President and CEO | 34,433 0.0453% | $41.81 | $1.44M | -31.44% | |
| 2024-05-15 | Sale | Hata Yujiro S | President and CEO | 83,856 0.112% | $42.90 | $3.6M | -31.90% | |
| 2024-05-14 | Sale | Hata Yujiro S | President and CEO | 56,711 0.0746% | $41.61 | $2.36M | -30.08% | |
| 2024-02-09 | Sale | Hata Yujiro S | President and CEO | 23,557 0.0351% | $45.54 | $1.07M | -18.78% | |
| 2024-02-09 | Sale | Ruiz Briseno Andres | See Remarks | 2,000 0.003% | $46.02 | $92,045 | -18.78% | |
| 2024-02-08 | Sale | Hata Yujiro S | President and CEO | 75,815 0.1121% | $45.15 | $3.42M | -16.75% | |
| 2024-02-01 | Sale | Hata Yujiro S | President and CEO | 628 0.0009% | $45.00 | $28,260 | -15.63% | |
| 2024-01-22 | Sale | Ruiz Briseno Andres | See Remarks | 2,000 0.0028% | $42.03 | $84,050 | -10.78% | |
| 2024-01-16 | Sale | Hata Yujiro S | President and CEO | 62,739 0.0965% | $40.17 | $2.52M | -5.95% | |
| 2024-01-12 | Sale | Hata Yujiro S | President and CEO | 12,261 0.0191% | $40.04 | $490,913 | -3.55% | |
| 2024-01-12 | Sale | Ruiz Briseno Andres | See Remarks | 2,000 0.003% | $38.01 | $76,026 | -3.55% | |
| 2023-12-15 | Sale | Hata Yujiro S | President and CEO | 75,000 0.1165% | $35.03 | $2.63M | +9.30% | |
| 2023-12-15 | Sale | Throne Jason | Chief Legal Officer | 10,000 0.0155% | $35.04 | $350,371 | +9.30% | |
| 2023-12-14 | Sale | Ruiz Briseno Andres | See Remarks | 2,000 0.0031% | $34.00 | $68,002 | +12.01% | |
| 2023-11-03 | Sale | Throne Jason | Chief Legal Officer | 5,163 0.0085% | $30.09 | $155,360 | +32.35% | |
| 2023-09-12 | Sale | Throne Jason | Chief Legal Officer | 1,000 0.0018% | $30.00 | $30,005 | +30.25% |
| Stein Jeffrey | director | 54281 0.0563% | $1.7M | 1 | 0 | |
| DIEKMAN JOHN D | director | 2844545 2.948% | $89.12M | 1 | 0 | <0.0001% |
| SHANNON TIMOTHY M | director | 2660713 2.7575% | $83.36M | 1 | 0 | <0.0001% |
| CANAAN X L.P. | 10 percent owner | 2660713 2.7575% | $83.36M | 1 | 0 | <0.0001% |
| Alexandria Venture Investments, LLC | 10 percent owner | 432384 0.4481% | $13.55M | 1 | 0 | <0.0001% |
| BVF PARTNERS L P/IL | 233150 0.2416% | $7.3M | 3 | 1 | <0.0001% | |
| 5AM Ventures IV, L.P. | 10 percent owner | 91142 0.0945% | $2.86M | 1 | 1 | <0.0001% |
| Stone Paul A. | Chief Financial Officer | 9303 0.0096% | $291,462.99 | 1 | 7 | <0.0001% |
$52,263,649 | 70 | 1.18% | $2.49B | |
$586,486,795 | 47 | 4.28% | $2.38B | |
$1,275,975,557 | 32 | 19.44% | $3.54B | |
$1,603,489 | 30 | 98.90% | $2.33B | |
$105,063,207 | 29 | 14.02% | $2.36B |
| Increased Positions | 145 | +60.92% | 11M | +12.15% |
| Decreased Positions | 102 | -42.86% | 9M | -9.51% |
| New Positions | 56 | New | 4M | New |
| Sold Out Positions | 28 | Sold Out | 2M | Sold Out |
| Total Postitions | 281 | +18.07% | 96M | +2.63% |
| Fmr Llc | $445,011.00 | 14.94% | 13.15M | +9,251 | +0.07% | 2025-09-30 |
| Blackrock, Inc. | $275,107.00 | 9.24% | 8.13M | -715,409 | -8.09% | 2025-09-30 |
| Capital Research Global Investors | $221,809.00 | 7.45% | 6.55M | 0 | 0% | 2025-09-30 |
| Janus Henderson Group Plc | $217,599.00 | 7.31% | 6.43M | +222,101 | +3.58% | 2025-09-30 |
| Vanguard Group Inc | $166,617.00 | 5.59% | 4.92M | -19,737 | -0.4% | 2025-09-30 |
| Federated Hermes, Inc. | $156,585.00 | 5.26% | 4.63M | -1,416 | -0.03% | 2025-09-30 |
| Point72 Asset Management, L.P. | $129,162.00 | 4.34% | 3.82M | -1M | -24.11% | 2025-09-30 |
| Baker Bros. Advisors Lp | $110,874.00 | 3.72% | 3.28M | +1M | +54.59% | 2025-09-30 |
| State Street Corp | $109,706.00 | 3.68% | 3.24M | -144,860 | -4.28% | 2025-09-30 |
| Adage Capital Partners Gp, L.L.C. | $98,168.00 | 3.3% | 2.9M | +2M | +134.24% | 2025-09-30 |