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IDEAYA Biosciences, Inc.

IDYA
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001676725

In the last 90 days, IDEAYA Biosciences, Inc. insiders filed 0 open-market purchases and 1 sale; 285 institutions reported holding it in 13F filings for Q2 2026, worth $3.81B in total; no superinvestor holds it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by IDEAYA Biosciences, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
1 filing
1 insider, $382.1K in total
Insiders trading
1
Net value
−$382.1K
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for IDEAYA Biosciences, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for IDEAYA Biosciences, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Ruiz Briseno AndresChief Accounting Officer26,466Jul 9, 20262
Yarno Wendy LDirector–Jun 18, 20261
Rosen Terry JDirector–Jun 18, 20261
Stein JeffreyDirector54,281Jun 18, 20262
Mackey Catherine JDirector–Jun 18, 20261
Morrison Scott WDirector–Jun 18, 20261
Hampton Malcolm GarretDirector–Jun 18, 20261
Beaupre DarrinChief Medical Officer–Feb 2, 20261
Hata Yujiro SPresident and CEO690,695Feb 2, 20261
Snyder Douglas B.SVP, General Counsel2,080Feb 2, 20261
White Michael AnthonyChief Scientific Officer0Feb 2, 20261
Dorman StuartChief Commercial Officer–Feb 2, 20261
Bleharski JoshuaChief Financial Officer–Feb 2, 20261
Throne JasonChief Legal Officer63,484Jun 27, 20240
Kelley Susan L.Director–May 31, 20240
Stone Paul A.Chief Financial Officer9,303Aug 31, 20230
Shannon Timothy MDirector–Jun 9, 20230
Dillon Michael P.SVP, Chief Scientific Officer78,789Oct 7, 20210

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Jul 9, 2026 (view filing)4:56 PM ETJul 72 daysRuiz Briseno AndresChief Accounting OfficerSSale−9.55K$40.01−$382.1K−26.5%26.5K after10b5-1
Mar 2, 2026 (view filing)Mar 2Same dayStein JeffreyDirectorPPurchase+50.0K$32.96+$1.65M+1,168.0%54.3K after
May 31, 2024 (view filing)May 292 daysWhite Michael AnthonyChief Scientific OfficerSSale−28.5K$36.25−$1.03M−100.0%0 after2 lots10b5-1
May 16, 2024 (view filing)May 14-162 daysHata Yujiro SPresident and CEOSSale−175.0K$42.27−$7.40M−20.5%677.9K after7 lots10b5-1
Feb 13, 2024 (view filing)Feb 94 daysRuiz Briseno AndresSee RemarksSSale−2.00K$46.02−$92.0K−7.5%24.5K after10b5-1
Feb 12, 2024 (view filing)Feb 8-94 daysHata Yujiro SPresident and CEOSSale−99.4K$45.24−$4.50M−12.8%677.9K after2 lots10b5-1
Feb 5, 2024 (view filing)Feb 14 daysHata Yujiro SPresident and CEOSSale−628$45.00−$28.3K−0.1%677.9K after2 lots10b5-1
Jan 24, 2024 (view filing)Jan 222 daysRuiz Briseno AndresSee RemarksSSale−2.00K$42.03−$84.1K−7.0%26.5K after10b5-1
Jan 17, 2024 (view filing)Jan 125 daysRuiz Briseno AndresSee RemarksSSale−2.00K$38.01−$76.0K−6.6%28.5K after10b5-1
Jan 17, 2024 (view filing)Jan 12-165 daysHata Yujiro SPresident and CEOSSale−75.0K$40.15−$3.01M−10.0%677.9K after2 lots10b5-1
Dec 19, 2023 (view filing)Dec 154 daysThrone JasonChief Legal OfficerSSale−10.0K$35.04−$350.4K−100.0%0 after10b5-1
Dec 19, 2023 (view filing)Dec 154 daysHata Yujiro SPresident and CEOSSale−75.0K$35.03−$2.63M−10.0%677.9K after10b5-1
Dec 18, 2023 (view filing)Dec 144 daysRuiz Briseno AndresSee RemarksSSale−2.00K$34.00−$68.0K−6.1%30.5K after2 lots10b5-1
Nov 7, 2023 (view filing)Nov 34 daysThrone JasonChief Legal OfficerSSale−5.16K$30.09−$155.4K−100.0%0 after10b5-1
Sep 14, 2023 (view filing)Sep 122 daysThrone JasonChief Legal OfficerSSale−1.00K$30.01−$30.0K−100.0%0 after2 lots10b5-1
Sep 6, 2023 (view filing)Sep 1-55 daysThrone JasonChief Legal OfficerSSale−3.84K$30.03−$115.2K−100.0%0 after2 lots10b5-1
Sep 6, 2023 (view filing)Sep 15 daysRuiz Briseno AndresSee RemarksSSale−2.00K$30.01−$60.0K−5.8%32.5K after10b5-1
Aug 31, 2023 (view filing)Aug 292 daysStone Paul A.Chief Financial OfficerSSale−5.00K$28.87−$144.3K−35.0%9.30K after10b5-1
Aug 23, 2023 (view filing)Aug 212 daysStone Paul A.Chief Financial OfficerSSale−978$26.40−$25.8K−6.4%14.3K after10b5-1
Aug 18, 2023 (view filing)Aug 16-182 daysStone Paul A.Chief Financial OfficerSSale−4.02K$26.38−$106.1K−20.8%15.3K after3 lots10b5-1
Aug 11, 2023 (view filing)Aug 92 daysThrone JasonChief Legal OfficerSSale−5.00K$25.09−$125.5K−100.0%0 after10b5-1
Aug 11, 2023 (view filing)Aug 92 daysStone Paul A.Chief Financial OfficerSSale−2.50K$25.05−$62.6K−11.5%19.3K after10b5-1
Jul 12, 2023 (view filing)Jul 102 daysThrone JasonChief Legal OfficerSSale−9.48K$23.00−$218.2K−100.0%0 after10b5-1
Jun 2, 2023 (view filing)May 31-Jun 12 daysThrone JasonChief Legal OfficerSSale−3.98K$23.02−$91.7K−100.0%0 after2 lots10b5-1
May 24, 2023 (view filing)May 222 daysThrone JasonChief Legal OfficerSSale−500$23.00−$11.5K−100.0%0 after10b5-1
Oct 7, 2021 (view filing)Oct 43 daysLateDillon Michael P.SVP, Chief Scientific OfficerSSale−1.50K$26.36−$39.5K−1.9%78.8K after2 lots
Sep 9, 2021 (view filing)Sep 7-82 daysDillon Michael P.SVP, Chief Scientific OfficerSSale−11.5K$27.42−$315.3K−12.7%78.8K after3 lots
Sep 9, 2021 (view filing)Sep 72 daysStone Paul A.SVP, Chief Financial OfficerSSale−2.50K$27.42−$68.5K−16.2%12.9K after
Sep 7, 2021 (view filing)Sep 25 daysDillon Michael P.SVP, Chief Scientific OfficerSSale−10.0K$25.09−$250.9K−11.3%78.8K after
Aug 11, 2021 (view filing)Aug 92 daysDillon Michael P.SVP, Chief Scientific OfficerSSale−11.5K$22.98−$264.3K−11.5%88.8K after2 lots
Jul 29, 2021 (view filing)Jul 272 daysDillon Michael P.SVP, Chief Scientific OfficerSSale−10.0K$25.15−$251.5K−9.2%98.8K after
Jul 29, 2021 (view filing)Jul 272 daysThrone JasonSVP, General CounselSSale−10.0K$25.17−$251.7K−100.0%0 after
Jul 8, 2021 (view filing)Jul 62 daysDillon Michael P.SVP, Chief Scientific OfficerSSale−1.50K$22.24−$33.4K−1.5%98.8K after2 lots
Jul 8, 2021 (view filing)Jul 62 daysThrone JasonSVP, General CounselSSale−10.0K$22.24−$222.4K−100.0%0 after4 lots