Company · Ownership research

IDEAYA Biosciences, Inc. IDYA

CIK 0001676725

Form 4 transactions dated Nov 1, 2023 to Nov 9, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 34 rows; the complete set is available through the API.

Insider filings on file run through Oct 8, 2026.

Insider purchases & sales

Purchased: $1.65M
Sold: $20.79M

Nov 1, 2023 – Oct 8, 2026
Available records · partial months are marked ·

202410 of 12 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
May 29, 2024	WHITE MICHAEL ANTHONY Chief Scientific Officer	Sale10b5-1 footnote	$1.03M 28,500 shares sold	100.00% sold Direct holding	▾
May 16, 2024	Hata Yujiro S President and CEO · Director	Sale10b5-1 footnote	$1.44M 34,433 shares sold	4.83% sold Direct holding	▾
May 15, 2024	Hata Yujiro S President and CEO · Director	Sale10b5-1 footnote	$3.60M 83,856 shares sold	11.01% sold Direct holding	▾
May 14, 2024	Hata Yujiro S President and CEO · Director	Sale10b5-1 footnote	$2.36M 56,711 shares sold	7.72% sold Direct holding	▾
Feb 9, 2024	Ruiz Briseno Andres See Remarks	Sale10b5-1 footnote	$92.04K 2,000 shares sold	7.54% sold Direct holding	▾
Feb 9, 2024	Hata Yujiro S President and CEO · Director	Sale10b5-1 footnote	$1.07M 23,557 shares sold	3.36% sold Direct holding	▾
Feb 8, 2024	Hata Yujiro S President and CEO · Director	Sale10b5-1 footnote	$3.42M 75,815 shares sold	10.06% sold Direct holding	▾
Feb 1, 2024	Hata Yujiro S President and CEO · Director	Sale10b5-1 footnote	$28.26K 628 shares sold	0.09% sold Direct holding	▾
Jan 22, 2024	Ruiz Briseno Andres See Remarks	Sale10b5-1 footnote	$84.05K 2,000 shares sold	7.01% sold Direct holding	▾
Jan 16, 2024	Hata Yujiro S President and CEO · Director	Sale10b5-1 footnote	$2.52M 62,739 shares sold	8.47% sold Direct holding	▾

Showing 12 / 12 record groups in 2024. The complete set is available through the API.

IDEAYA Biosciences, Inc. · IDYA

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 12 of 12 purchase / sale groups and 30 of 34 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"IDYA","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.