IDEAYA Biosciences, Inc. (IDYA)

Latest Insider Confidence Score

2026Q1

50.0
Bearish

Company insider confidence (by quarter)

2019Q2 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Shannon Timothy M Director 602,549 May 28, 2019
Canaan X L.P. 10% Owner 602,549 May 28, 2019
Canaan Partners X LLC 10% Owner 602,549 May 28, 2019
Schwab Andrew J. 10% Owner 384,496 Nov 13, 2020
Diekman John D 10% Owner 384,496 Nov 13, 2020

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Mar 2, 2026 Mar 2, 2026 Stein Jeffrey Director Buy 100.0 +50,000 454.26% ✗ $1.6M
Jan 30, 2026 Feb 2, 2026 Bleharski Joshua CFO Neutral 52.5 - 0.00% ✗ -
Jan 30, 2026 Feb 2, 2026 WHITE MICHAEL ANTHONY Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Jan 30, 2026 Feb 2, 2026 Beaupre Darrin Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Jan 30, 2026 Feb 2, 2026 DORMAN STUART Chief Commercial Officer Neutral 52.5 - 0.00% ✗ -
Jan 30, 2026 Feb 2, 2026 Hata Yujiro S CEO Neutral 52.5 - 0.00% ✗ -
May 30, 2025 Feb 2, 2026 Snyder Douglas B. SVP, General Counsel Neutral 90.0 +2,080 100.00% ✗ -
Nov 29, 2024 Feb 2, 2026 Ruiz Briseno Andres Officer Neutral 85.0 +1,935 7.89% ✗ -
Jun 27, 2025 Bleharski Joshua CFO Neutral 52.5 - 0.00% ✗ -
Jun 24, 2025 Jun 26, 2025 YARNO WENDY L Director Neutral 52.5 - 0.00% ✗ -
Jun 24, 2025 Jun 26, 2025 Stein Jeffrey Director Neutral 52.5 - 0.00% ✗ -
Jun 24, 2025 Jun 26, 2025 Hampton Malcolm Garret Director Neutral 52.5 - 0.00% ✗ -
Jun 24, 2025 Jun 26, 2025 Morrison Scott W Director Neutral 52.5 - 0.00% ✗ -
Jun 24, 2025 Jun 26, 2025 MACKEY CATHERINE J Director Neutral 52.5 - 0.00% ✗ -
Jun 24, 2025 Jun 26, 2025 ROSEN TERRY J Director Neutral 52.5 - 0.00% ✗ -
Feb 27, 2025 Feb 28, 2025 Beaupre Darrin Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Feb 27, 2025 Feb 28, 2025 DORMAN STUART Chief Commercial Officer Neutral 52.5 - 0.00% ✗ -
Feb 27, 2025 Feb 28, 2025 Ruiz Briseno Andres Officer Neutral 52.5 - 0.00% ✗ -
Feb 27, 2025 Feb 28, 2025 WHITE MICHAEL ANTHONY Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Feb 27, 2025 Feb 28, 2025 Snyder Douglas B. SVP, General Counsel Neutral 52.5 - 0.00% ✗ -
Feb 27, 2025 Feb 28, 2025 Hata Yujiro S CEO Neutral 52.5 - 0.00% ✗ -
Feb 18, 2025 Feb 19, 2025 Hata Yujiro S CEO Neutral 52.5 - 0.00% ✗ -
Dec 20, 2024 DORMAN STUART Chief Commercial Officer Neutral 52.5 - 0.00% ✗ -
Sep 26, 2024 Sep 27, 2024 Snyder Douglas B. SVP, General Counsel Neutral 52.5 - 0.00% ✗ -
Sep 27, 2024 Snyder Douglas B. SVP, General Counsel Neutral 52.5 - 0.00% ✗ -
Jun 27, 2024 Jun 27, 2024 Throne Jason Chief Legal Officer Neutral 52.5 - 0.00% ✗ -
May 31, 2024 May 31, 2024 ROSEN TERRY J Director Neutral 52.5 - 0.00% ✗ -
May 31, 2024 May 31, 2024 Kelley Susan L. Director Neutral 52.5 - 0.00% ✗ -
May 31, 2024 May 31, 2024 Hampton Malcolm Garret Director Neutral 52.5 - 0.00% ✗ -
May 31, 2024 May 31, 2024 Stein Jeffrey Director Neutral 52.5 - 0.00% ✗ -
May 31, 2024 May 31, 2024 Morrison Scott W Director Neutral 52.5 - 0.00% ✗ -
May 31, 2024 May 31, 2024 YARNO WENDY L Director Neutral 52.5 - 0.00% ✗ -
May 31, 2024 May 31, 2024 MACKEY CATHERINE J Director Neutral 52.5 - 0.00% ✗ -
May 29, 2024 May 31, 2024 WHITE MICHAEL ANTHONY Chief Scientific Officer Sell 5.0 -28,500 -100.00% ✓ $1M
May 14, 2024 May 16, 2024 Hata Yujiro S CEO Sell 31.3 -175,000 -3.53% ✓ $7.4M
Mar 1, 2024 Mar 4, 2024 Hata Yujiro S CEO Neutral 52.5 - 0.00% ✗ -
Mar 1, 2024 Mar 4, 2024 Ruiz Briseno Andres Officer Neutral 52.5 - 0.00% ✗ -
Mar 1, 2024 Mar 4, 2024 Beaupre Darrin Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Mar 1, 2024 Mar 4, 2024 WHITE MICHAEL ANTHONY Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Mar 1, 2024 Mar 4, 2024 Throne Jason Chief Legal Officer Neutral 52.5 - 0.00% ✗ -
Feb 9, 2024 Feb 13, 2024 Ruiz Briseno Andres Officer Sell 28.8 -2,000 -7.54% ✓ $92K
Feb 8, 2024 Feb 12, 2024 Hata Yujiro S CEO Sell 27.5 -99,372 -6.83% ✓ $4.5M
Feb 1, 2024 Feb 5, 2024 Hata Yujiro S CEO Sell 55.0 -628 -0.09% ✓ $28.3K
Jan 22, 2024 Jan 24, 2024 Ruiz Briseno Andres Officer Sell 32.5 -2,000 -7.01% ✓ $84.1K
Jan 12, 2024 Jan 17, 2024 Ruiz Briseno Andres Officer Sell 32.5 -2,000 -6.55% ✓ $76K
Jan 12, 2024 Jan 17, 2024 Hata Yujiro S CEO Sell 27.5 -75,000 -5.24% ✓ $3M
Dec 15, 2023 Dec 19, 2023 Throne Jason Chief Legal Officer Sell 7.5 -10,000 -100.00% ✓ $350.4K
Dec 15, 2023 Dec 19, 2023 Hata Yujiro S CEO Sell 23.8 -75,000 -9.96% ✓ $2.6M
Dec 14, 2023 Dec 18, 2023 Ruiz Briseno Andres Officer Sell 32.5 -2,000 -6.15% ✓ $68K
Nov 3, 2023 Nov 7, 2023 Throne Jason Chief Legal Officer Sell 10.0 -5,163 -100.00% ✓ $155.4K
Sep 12, 2023 Sep 14, 2023 Throne Jason Chief Legal Officer Sell 13.8 -1,000 -100.00% ✓ $30K
Sep 1, 2023 Sep 6, 2023 Throne Jason Chief Legal Officer Sell 10.0 -3,837 -100.00% ✓ $115.2K
Sep 1, 2023 Sep 6, 2023 Ruiz Briseno Andres Officer Sell 32.5 -2,000 -5.79% ✓ $60K
Aug 29, 2023 Aug 31, 2023 Stone Paul A. CFO Sell 10.0 -5,000 -34.96% ✓ $144.4K
Aug 21, 2023 Aug 23, 2023 Stone Paul A. CFO Sell 36.3 -978 -6.40% ✓ $25.8K
Aug 16, 2023 Aug 18, 2023 Stone Paul A. CFO Sell 15.0 -4,022 -20.84% ✓ $106.1K
Aug 9, 2023 Aug 11, 2023 Throne Jason Chief Legal Officer Sell 10.0 -5,000 -100.00% ✓ $125.4K
Aug 9, 2023 Aug 11, 2023 Stone Paul A. CFO Sell 25.0 -2,500 -11.47% ✓ $62.6K
Jul 10, 2023 Jul 12, 2023 Throne Jason Chief Legal Officer Sell 10.0 -9,485 -100.00% ✓ $218.2K
Jul 3, 2023 Ruiz Briseno Andres Officer Neutral 52.5 - 0.00% ✗ -
Jun 7, 2023 Jun 9, 2023 SHANNON TIMOTHY M Director Neutral 52.5 - 0.00% ✗ -
Jun 7, 2023 Jun 9, 2023 Hampton Malcolm Garret Director Neutral 52.5 - 0.00% ✗ -
Jun 7, 2023 Jun 9, 2023 Kelley Susan L. Director Neutral 52.5 - 0.00% ✗ -
Jun 7, 2023 Jun 9, 2023 MACKEY CATHERINE J Director Neutral 52.5 - 0.00% ✗ -
Jun 7, 2023 Jun 9, 2023 Morrison Scott W Director Neutral 52.5 - 0.00% ✗ -
Jun 7, 2023 Jun 9, 2023 ROSEN TERRY J Director Neutral 52.5 - 0.00% ✗ -
Jun 7, 2023 Jun 9, 2023 Stein Jeffrey Director Neutral 52.5 - 0.00% ✗ -
Jun 7, 2023 Jun 9, 2023 YARNO WENDY L Director Neutral 52.5 - 0.00% ✗ -
May 31, 2023 Jun 2, 2023 Throne Jason Chief Legal Officer Sell 10.0 -3,985 -100.00% ✓ $91.7K
May 22, 2023 May 24, 2023 Throne Jason Chief Legal Officer Sell 13.8 -500 -100.00% ✓ $11.5K
Apr 13, 2023 Apr 14, 2023 Stone Paul A. CFO Neutral 52.5 - 0.00% ✗ -
Apr 12, 2023 Apr 13, 2023 Hata Yujiro S CEO Neutral 52.5 - 0.00% ✗ -
Feb 24, 2023 Feb 28, 2023 WHITE MICHAEL ANTHONY Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Feb 24, 2023 Feb 28, 2023 Beaupre Darrin Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Feb 24, 2023 Feb 28, 2023 Stone Paul A. CFO Neutral 52.5 - 0.00% ✗ -
Feb 24, 2023 Feb 28, 2023 Throne Jason Chief Legal Officer Neutral 52.5 - 0.00% ✗ -
Feb 24, 2023 Feb 28, 2023 Hata Yujiro S CEO Neutral 52.5 - 0.00% ✗ -
Dec 14, 2022 Beaupre Darrin SVP, Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Jun 9, 2022 Jun 10, 2022 YARNO WENDY L Director Neutral 52.5 - 0.00% ✗ -
Jun 9, 2022 Jun 10, 2022 SHANNON TIMOTHY M Director Neutral 52.5 - 0.00% ✗ -
Jun 9, 2022 Jun 10, 2022 ROSEN TERRY J Director Neutral 52.5 - 0.00% ✗ -
Jun 9, 2022 Jun 10, 2022 Kelley Susan L. Director Neutral 52.5 - 0.00% ✗ -
Jun 9, 2022 Jun 10, 2022 Kelley Susan L. Director Neutral 52.5 - 0.00% ✗ -
Jun 9, 2022 Jun 10, 2022 Morrison Scott W Director Neutral 52.5 - 0.00% ✗ -
Jun 9, 2022 Jun 10, 2022 Stein Jeffrey Director Neutral 52.5 - 0.00% ✗ -
Jun 9, 2022 Jun 10, 2022 Hampton Malcolm Garret Director Neutral 52.5 - 0.00% ✗ -
May 28, 2021 Apr 14, 2022 Stone Paul A. CFO Neutral 85.0 +859 6.64% ✗ -
Apr 5, 2022 Apr 6, 2022 MACKEY CATHERINE J Director Neutral 52.5 - 0.00% ✗ -
Apr 6, 2022 MACKEY CATHERINE J Director Neutral 52.5 - 0.00% ✗ -
Mar 1, 2022 Mar 2, 2022 Stone Paul A. CFO Neutral 52.5 - 0.00% ✗ -
Mar 1, 2022 Mar 2, 2022 WHITE MICHAEL ANTHONY SVP, Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Mar 1, 2022 Mar 2, 2022 Hata Yujiro S CEO Neutral 52.5 - 0.00% ✗ -
Mar 1, 2022 Mar 2, 2022 Throne Jason SVP, General Counsel Neutral 52.5 - 0.00% ✗ -
Oct 25, 2021 Oct 27, 2021 WHITE MICHAEL ANTHONY SVP, Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Oct 27, 2021 WHITE MICHAEL ANTHONY SVP, Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Oct 4, 2021 Oct 7, 2021 Dillon Michael P. SVP, Chief Scientific Officer Sell 48.8 -1,500 -1.87% ✓ $39.5K
Sep 7, 2021 Sep 9, 2021 Dillon Michael P. SVP, Chief Scientific Officer Sell 35.0 -11,500 -4.64% ✓ $315.3K
Sep 7, 2021 Sep 9, 2021 Stone Paul A. CFO Sell 20.0 -2,500 -16.19% ✓ $68.5K
Sep 2, 2021 Sep 7, 2021 Dillon Michael P. SVP, Chief Scientific Officer Sell 22.5 -10,000 -11.26% ✓ $250.9K
Aug 9, 2021 Aug 11, 2021 Dillon Michael P. SVP, Chief Scientific Officer Sell 22.5 -11,500 -11.47% ✓ $264.3K