IDEAYA Biosciences Ownership & Insider Activity

IDEAYA Biosciences (IDYA) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 1.1% of shares outstanding. Institutional investors hold 72.2%.

Shares Outstanding

96.489M

Shares Float

83.072M

Insider Shares Owned

1.069M

Insider % Owned

1.1%

Institutional Shares Held

69.657M

Institutional % Held

72.2%

Ownership Breakdown

Net Insider Activity by Month

IDEAYA Biosciences Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Oct 6, 2026	Yujiro Hata	PRESIDENT AND CEO	SELL-OPTIONS	—	$20.86	$872K
Jul 7, 2026	Andres Ruiz Briseno	CHIEF ACCOUNTING OFFICER	SELL-OPTIONS	—	$26.44	$259K