IDEAYA Biosciences Inc.

Last updated September 27, 2026

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Organization details

Legal name: IDEAYA Biosciences Inc.
Ownership: Public
Status: Active
Sector (GICS): Health Care
SIC code: 2834 — Pharmaceutical Preparations
Jurisdiction of incorporation: Delaware
Headquarters city: South SAN Francisco
Headquarters state / province: California
Headquarters country: United States
Fiscal year end: December
Ticker symbol: IDYA
Primary stock exchange: Nasdaq

Identifiers

SEC CIK: 0001676725
EIN: 47-4268251
Wikidata ID: Q104481192

Board of directors

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Catherine J. Mackey · Director
Since 2023
Jeffrey Stein · Director
Since 2023
Malcolm Garret Hampton · Director
Since 2023
Scott W. Morrison · Director Overboarded
Since 2023
Susan L. Kelley · Director
Since 2023
Terry J. Rosen · Director
Since 2023
Timothy M. Shannon · Director
Since 2023
Wendy L. Yarno · Director
Since 2023
Yujiro S. Hata · Director · President and CEO
Since 2023

Chief executives

Yujiro S. Hata · President and CEO

Dates unknown

Director election results

Annual meeting of June 16, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Board connections

7 of this board's directors also sit on 11 other boards. 10 are in the same sector.

Shared director Other board Same sector

Tarsus Pharmaceuticals Inc. Same sector
via Scott W. Morrison and Wendy L. Yarno
Arcus Biosciences Inc. Same sector
via Terry J. Rosen
Corvus Pharmaceuticals Inc. Same sector
via Scott W. Morrison
Dare Bioscience Inc. Same sector
via Susan L. Kelley
Enanta Pharmaceuticals Inc. Same sector
via Yujiro S. Hata
Inovio Pharmaceuticals Inc. Same sector
via Wendy L. Yarno
Iovance Biotherapeutics Inc. Same sector
via Wendy L. Yarno
Quanterix Corporation
via Malcolm Garret Hampton
Vera Therapeutics Inc. Same sector
via Scott W. Morrison
Voyager Therapeutics Inc. Same sector
via Catherine J. Mackey
Zai Lab Limited Same sector
via Scott W. Morrison

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months: $1,648,000; 1 purchase by 1 insider
Sold, last 12 months: $1,367,492; 3 sales by 2 insiders

Date	Insider	Transaction	Shares	Price	Value
Oct 6, 2026	Yujiro S. Hata Director, Officer (President and CEO)	Option exercise	+26,338	$4.31	$113,517
Oct 6, 2026	Yujiro S. Hata Director, Officer (President and CEO)	Open-market sale	−25,538	$37.39	$954,787
Oct 6, 2026	Yujiro S. Hata Director, Officer (President and CEO)	Open-market sale	−800	$38.26	$30,610
Jul 7, 2026	Ruiz Briseno Andres Officer (Chief Accounting Officer)	Option exercise	+9,550	$12.86	$122,813
Jul 7, 2026	Ruiz Briseno Andres Officer (Chief Accounting Officer)	Open-market sale	−9,550	$40.01	$382,096
Mar 2, 2026	Jeffrey Stein Director	Open-market purchase	+50,000	$32.96	$1,648,000
Nov 28, 2025	Snyder Douglas B. Officer (SVP, General Counsel)	Grant or award	+1,041	$16.91	$17,603
Nov 28, 2025	Ruiz Briseno Andres Officer (See Remarks)	Grant or award	+1,253	$16.91	$21,188
May 30, 2025	Snyder Douglas B. Officer (SVP, General Counsel)	Grant or award	+1,039	$16.91	$17,569
Feb 18, 2025	Yujiro S. Hata Director, Officer (President and CEO)	Option exercise	+12,808	$19.52	$250,012
Nov 29, 2024	Ruiz Briseno Andres Officer (See Remarks)	Grant or award	+682	$23.26	$15,863
Jun 27, 2024	Throne Jason Officer (Chief Legal Officer)	Option exercise	+6,424	$13.34	$85,696
Jun 27, 2024	Throne Jason Officer (Chief Legal Officer)	Option exercise	+47,060	$7.01	$329,891
May 29, 2024	WHITE MICHAEL ANTHONY Officer (Chief Scientific Officer)	Option exercise	+28,500	$12.86	$366,510
May 29, 2024	WHITE MICHAEL ANTHONY Officer (Chief Scientific Officer)	Open-market sale	−27,649	$36.23	$1,001,723

Peers

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Questions about IDEAYA Biosciences Inc.

Who is the CEO of IDEAYA Biosciences Inc.?

Yujiro S. Hata is IDEAYA Biosciences Inc.'s President and CEO.

How many directors are on IDEAYA Biosciences Inc.'s board?

IDEAYA Biosciences Inc.'s board has 9 directors: Catherine J. Mackey, Jeffrey Stein, Malcolm Garret Hampton, Scott W. Morrison, Susan L. Kelley, Terry J. Rosen, Timothy M. Shannon, Wendy L. Yarno and Yujiro S. Hata.

Are IDEAYA Biosciences Inc. insiders buying or selling shares?

Over the last 12 months, IDEAYA Biosciences Inc. insiders bought $1.6 million of shares in 1 purchase and sold $1.4 million of shares in 3 sales on the open market, as reported to the SEC on Forms 4 and 5.

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