Ideaya Biosciences Inc. Insider Trading

IDYA

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Last 12 months

Insiders bought $1.65M and sold $1.37M on the open market.

All of the selling was scheduled in advance under 10b5-1 plans.

Net open-market

+281K

1 buy · 2 sales

Under a 10b5-1 plan

100%

of the value sold

Insiders who bought / sold

1 / 2

executives and directors

Last open-market buy

Mar 2026

Mar 2, 2026

Get an email when IDYA's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 6	Yujiro S Hata President and CEO	Sold10b5-1 plan 2 parts	26,338	$37.41 average	985K	3.7%	Form 4
Jul 7	Briseno Andres Ruiz Chief Accounting Officer	Sold10b5-1 plan	9,550	$40.01	382K	27%	Form 4
Mar 2	Jeffrey Stein Director	Bought	50,000	$32.96	$1.65M	654%	Form 4

Oct 610b5-1 plan
Yujiro S Hata
President and CEO · sold 26,338 at avg $37.41
985K
3.7% of stake
Jul 710b5-1 plan
Briseno Andres Ruiz
Chief Accounting Officer · sold 9,550 at $40.01
382K
27% of stake
Mar 2
Jeffrey Stein
Director · bought 50,000 at $32.96
$1.65M
654% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch IDYA, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Held by ETFs

IDYA is in 55 US ETFs. The largest of them, with IDYA's weight in each:

Spot a number that looks wrong? Check it in IDYA's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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