IDEAYA Biosciences, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Hata Yujiro S | President and CEO | Option Exercise | 12,808 | $19.52 | $250,012 | 690,695 | Feb 18, 2025 |
| Throne Jason | Chief Legal Officer | Option Exercise | 6,424 | $13.34 | $85,696 | 16,424 | Jun 27, 2024 |
| WHITE MICHAEL ANTHONY | Chief Scientific Officer | Sale | 851 | $36.78 | $31,300 | — | May 29, 2024 |
| Hata Yujiro S | President and CEO | Option Exercise | 83,856 | $4.31 | $361,419 | 761,743 | May 16, 2024 |
| Ruiz Briseno Andres | See Remarks | Sale | 2,000 | $46.02 | $92,040 | 24,531 | Feb 9, 2024 |
| Hata Yujiro S | President and CEO | Sale | 23,557 | $45.54 | $1,072,786 | 677,887 | Feb 8, 2024 |
| Hata Yujiro S | President and CEO | Sale | 624 | $45.00 | $28,080 | 677,891 | Feb 1, 2024 |
| Ruiz Briseno Andres | See Remarks | Sale | 2,000 | $42.03 | $84,060 | 26,531 | Jan 22, 2024 |
| Hata Yujiro S | President and CEO | Option Exercise | 12,261 | $4.31 | $52,845 | 690,148 | Jan 16, 2024 |
| Ruiz Briseno Andres | See Remarks | Sale | 2,000 | $38.01 | $76,020 | 28,531 | Jan 12, 2024 |
| Throne Jason | Chief Legal Officer | Option Exercise | 10,000 | $13.34 | $133,400 | 10,000 | Dec 18, 2023 |
| Hata Yujiro S | President and CEO | Sale | 75,000 | $35.03 | $2,627,250 | 677,887 | Dec 15, 2023 |
| Ruiz Briseno Andres | See Remarks | Sale | 1,672 | $34.00 | $56,848 | 30,859 | Dec 14, 2023 |
| Throne Jason | Chief Legal Officer | Sale | 5,163 | $30.09 | $155,355 | — | Nov 3, 2023 |
| Throne Jason | Chief Legal Officer | Sale | 500 | $30.00 | $15,000 | 500 | Sep 12, 2023 |
| Throne Jason | Chief Legal Officer | Option Exercise | 2,100 | $12.86 | $27,006 | 2,100 | Sep 5, 2023 |
| Ruiz Briseno Andres | See Remarks | Sale | 2,000 | $30.01 | $60,020 | 32,531 | Sep 1, 2023 |
| Stone Paul A. | Chief Financial Officer | Sale | 5,000 | $28.87 | $144,350 | 9,303 | Aug 29, 2023 |
| Stone Paul A. | Chief Financial Officer | Sale | 978 | $26.40 | $25,819 | 14,303 | Aug 21, 2023 |
| Stone Paul A. | Chief Financial Officer | Sale | 3,822 | $26.38 | $100,824 | 15,281 | Aug 16, 2023 |
| Throne Jason | Chief Legal Officer | Option Exercise | 5,000 | $13.34 | $66,700 | 5,000 | Aug 9, 2023 |
| Stone Paul A. | Chief Financial Officer | Sale | 2,500 | $25.05 | $62,625 | 19,303 | Aug 9, 2023 |
| Throne Jason | Chief Legal Officer | Sale | 9,485 | $23.00 | $218,155 | — | Jul 10, 2023 |
| Throne Jason | Chief Legal Officer | Sale | 3,553 | $23.02 | $81,790 | — | May 31, 2023 |
| Throne Jason | Chief Legal Officer | Option Exercise | 500 | $7.01 | $3,505 | 500 | May 22, 2023 |
| Stone Paul A. | Chief Financial Officer | Option Exercise | 8,000 | $4.62 | $36,960 | 21,803 | Apr 13, 2023 |
| Hata Yujiro S | President and CEO | Option Exercise | 11,601 | $4.31 | $50,000 | 677,887 | Apr 12, 2023 |
| Dillon Michael P. | SVP, Chief Scientific Officer | Option Exercise | 1,500 | $11.08 | $16,620 | 80,289 | Oct 4, 2021 |
| Dillon Michael P. | SVP, Chief Scientific Officer | Option Exercise | 7,071 | $4.31 | $30,476 | 85,860 | Sep 7, 2021 |
| Stone Paul A. | SVP, Chief Financial Officer | Sale | 2,500 | $27.42 | $68,550 | 12,944 | Sep 7, 2021 |
| Dillon Michael P. | SVP, Chief Scientific Officer | Sale | 10,000 | $25.09 | $250,900 | 78,789 | Sep 2, 2021 |
| Dillon Michael P. | SVP, Chief Scientific Officer | Sale | 11,100 | $22.96 | $254,856 | 89,189 | Aug 9, 2021 |
| Dillon Michael P. | SVP, Chief Scientific Officer | Sale | 10,000 | $25.15 | $251,500 | 98,789 | Jul 27, 2021 |
| Throne Jason | SVP, General Counsel | Sale | 10,000 | $25.17 | $251,700 | — | Jul 27, 2021 |
| Dillon Michael P. | SVP, Chief Scientific Officer | Sale | 1,400 | $22.20 | $31,080 | 98,889 | Jul 6, 2021 |
| Throne Jason | SVP, General Counsel | Sale | 6,468 | $22.16 | $143,331 | 3,532 | Jul 6, 2021 |
| Dillon Michael P. | SVP, Chief Scientific Officer | Sale | 1,107 | $22.47 | $24,874 | 98,789 | Jun 16, 2021 |
| Dillon Michael P. | SVP, Chief Scientific Officer | Option Exercise | 1,500 | $6.92 | $10,380 | 100,289 | Jun 7, 2021 |
| Stone Paul A. | SVP, Chief Financial Officer | Award / Grant | 859 | $11.36 | $9,758 | 13,803 | May 28, 2021 |
| Dillon Michael P. | SVP, Chief Scientific Officer | Option Exercise | 5,000 | $6.92 | $34,600 | 103,789 | May 11, 2021 |
| Dillon Michael P. | SVP, Chief Scientific Officer | Sale | 5,000 | $20.74 | $103,700 | 98,789 | Feb 9, 2021 |
| Lackner Mark | SVP, Head of Biology | Option Exercise | 1,104 | $6.98 | $7,706 | 1,104 | Feb 8, 2021 |
| BVF PARTNERS L P/IL | — | Sale | 16,850 | $18.00 | $303,300 | 1,188,131 | Feb 2, 2021 |
| Lackner Mark | SVP, Head of Biology | Option Exercise | 1,123 | $6.98 | $7,839 | 2,501 | Jan 26, 2021 |
| Hata Yujiro S | President and CEO | Option Exercise | 8,000 | $4.31 | $34,480 | 666,286 | Dec 22, 2020 |
| Dillon Michael P. | SVP, Chief Scientific Officer | Option Exercise | 7,750 | $4.31 | $33,403 | 98,789 | Dec 18, 2020 |
| Stone Paul A. | SVP, Chief Financial Officer | Other | 444 | — | — | 15,444 | Dec 11, 2020 |
| Throne Jason | SVP, General Counsel | Sale | 400 | $14.66 | $5,864 | 1,579 | Dec 4, 2020 |
| Schwab Andrew J. | — | Sale | 657,117 | $13.66 | $8,976,218 | 2,187,428 | Nov 11, 2020 |
| BVF I GP LLC | — | Purchase | 81 | $13.32 | $1,079 | 237,475 | Jun 30, 2020 |