Yujiro S. Hata - 30 Jan 2026 Form 4 Insider Report for IDEAYA Biosciences, Inc. (IDYA)

Reporting relationship: President and CEO, Director
Issuer ticker: IDYA
Reported as of: 30 Jan 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 02 Feb 2026, 19:58:51 UTC
Prior SEC filing: 14 Mar 2025
Next SEC filing: 13 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Joshua Bleharski, as Attorney-in-Fact for Yujiro Hata

Key filing fact

Yujiro S. Hata filed Form 4 for IDEAYA Biosciences, Inc. (IDYA) on 02 Feb 2026.

Key facts

This page summarizes Yujiro S. Hata's Form 4 filing for IDEAYA Biosciences, Inc. (IDYA).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 02 Feb 2026, 19:58.

Change

Previous filing in this sequence was filed on 14 Mar 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001649119 Primary reporting owner

Hata Yujiro S

Relationship: President and CEO, Director
Address: C/O IDEAYA BIOSCIENCES, INC., 5000 SHORELINE COURT, SUITE 300, SOUTH SAN FRANCISCO
Signature: /s/ Joshua Bleharski, as Attorney-in-Fact for Yujiro Hata
Signature date: 02 Feb 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

IDYA transaction Derivative

Stock Option (right to buy)

Award

Transaction value: $0
Shares: +600,000
Change %
Price: $0.000000
Shares after: 600,000
Date: 30 Jan 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 600,000
Exercise price: $32.19
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

25% of the shares subject to the option vest on the first anniversary measured from January 1, 2026 (the "Vesting Commencement Date"), and 1/48th of the total number of shares vest monthly thereafter, such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date.