IDEAYA Biosciences (IDYA) director receives stock options on 20,000 shares

Rhea-AI Filing Summary

IDEAYA Biosciences director Wendy L. Yarno received a grant of stock options for 20,000 shares of common stock at an exercise price of $30.57 per share. The options vest 100% on the earlier of one year from grant or immediately before the next Annual Meeting, subject to continued Board service, and expire on June 16, 2036.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider YARNO WENDY L

Role null

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (right to buy)	20,000	$0.00	--

Holdings After Transaction: Stock Option (right to buy) — 20,000 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Option grant size: 20,000 shares Exercise price: $30.57 per share Total derivative shares after grant: 20,000 shares +2 more

5 metrics

Option grant size 20,000 shares Underlying common stock in new stock option award

Exercise price $30.57 per share Strike price of stock option grant

Total derivative shares after grant 20,000 shares Derivative securities following transaction

Option expiration date June 16, 2036 End of option term

Vesting schedule 100% cliff vesting Earlier of one year from grant or before next Annual Meeting

Key Terms

Stock Option (right to buy), Common Stock, Annual Meeting, vesting, +1 more

5 terms

Stock Option (right to buy) financial

"security_title: "Stock Option (right to buy)""

Common Stock financial

"underlying_security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Annual Meeting financial

"immediately prior to the Annual Meeting following the date of grant"

A company's annual meeting is a yearly gathering where owners (shareholders) and the board review performance, ask questions, and vote on key matters like electing directors, approving auditor choices, and sometimes setting pay or dividend policies. For investors it matters because decisions made and votes cast can change who runs the company, influence strategy and payouts, and affect the value or direction of their investment—similar to a homeowners’ meeting where rules and leaders that shape your property’s value are decided.

vesting financial

"100% of the shares subject to the option shall vest in full"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

exercise price financial

"conversion_or_exercise_price": "30.5700""

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

YARNO WENDY L

(Last) (First) (Middle)

C/O IDEAYA BIOSCIENCES, INC.

5000 SHORELINE COURT, SUITE 300

(Street)

SOUTH SAN FRANCISCO CALIFORNIA 94080

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
IDEAYA Biosciences, Inc. [ IDYA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/16/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)	$30.57	06/16/2026		A		20,000		(1)	06/16/2036	Common Stock	20,000	$0	20,000	D

Explanation of Responses:

1. 100% of the shares subject to the option shall vest in full on the earlier of (i) the first anniversary of the date of grant and (ii) immediately prior to the Annual Meeting following the date of grant, subject to the Reporting Person continuing in service on the Board through such vesting date.

	/s/ Andres Ruiz Briseno, as Attorney-in-Fact for Wendy L. Yarno	06/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did IDEAYA Biosciences (IDYA) report for Wendy L. Yarno?

IDEAYA Biosciences reported that director Wendy L. Yarno received a stock option grant covering 20,000 shares of common stock at an exercise price of $30.57 per share. This is a compensation-related equity award, not an open-market stock purchase or sale.

How many IDEAYA (IDYA) shares are covered by Wendy Yarno’s new stock options?

The new stock option grant to Wendy Yarno covers 20,000 underlying shares of IDEAYA common stock. Following this award, the Form 4 shows she holds derivative securities representing 20,000 shares tied to this option grant, subject to vesting and expiration terms.

What is the exercise price and term of Wendy Yarno’s IDEAYA stock options?

Wendy Yarno’s IDEAYA stock options have an exercise price of $30.57 per share and an expiration date of June 16, 2036. These options give her the right to buy IDEAYA common stock at that price once they are vested and exercised.

When do Wendy Yarno’s IDEAYA (IDYA) stock options vest?

All 20,000 stock options granted to Wendy Yarno vest 100% on the earlier of the first anniversary of the grant date or immediately before the Annual Meeting following the grant. Vesting is conditioned on her continued service on IDEAYA’s Board through that vesting date.

Is Wendy Yarno’s IDEAYA Form 4 transaction a market buy or sell?

The Form 4 reports a grant of stock options as compensation, coded as a grant or award acquisition. It is not an open-market buy or sell of IDEAYA common stock, but the creation of an option position she may later exercise, subject to vesting and expiration.

How many IDEAYA derivative securities does Wendy Yarno hold after this grant?

After the transaction, Wendy Yarno holds derivative securities representing 20,000 shares through the stock option award. The Form 4 shows 20,000 derivative shares following the transaction, reflecting this newly granted option position and no additional derivative holdings in the excerpt.