[Form 4] ILLUMINA, INC. Insider Trading Activity

Rhea-AI Filing Summary

Scott B. Ullem, a director of Illumina, Inc. (ILMN), reported on Form 4 that on 09/30/2025 he acquired 252 shares of Illumina common stock issued in lieu of cash retainer fees at an implied price of $99.1666 per share. Following the transaction he beneficially owns 8,389 shares, held directly. The filing states Mr. Ullem elected to receive 100% of his 2025 board and committee cash retainer fees in Illumina stock, with share counts determined using the quarter’s volume-weighted average closing price. The form is signed on 10/02/2025.

Positive

• Director alignment: Mr. Ullem elected to receive 100% of his 2025 cash retainer in stock, aligning interests with shareholders
• Clear reporting: Transaction reported on Form 4 with specific share count (252), price ($99.1666), and resulting ownership (8,389)

Negative

• None.

Insights

Corporate Governance Specialist

Director elected stock-for-fee payment; small automatic share issuance.

The filing documents a standard director compensation election: Mr. Ullem received 252 shares for quarterly retainer fees, calculated using the quarter’s volume-weighted average closing price at $99.1666 per share. This increases his direct holdings to 8,389 shares.

Such elections are routine governance practices to align director interests with shareholders and do not indicate discretionary insider trading; the report shows an issuance under the company’s compensation arrangement rather than an open-market purchase or sale.

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

1. Name and Address of Reporting Person^*

Ullem Scott B.

(Last) (First) (Middle)

5200 ILLUMINA WAY

(Street)

SAN DIEGO CA 92122

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ILLUMINA, INC. [ ILMN ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2025

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

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

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

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
Common Stock	09/30/2025		A		252(1)	A	$99.1666	8,389	D

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

Explanation of Responses:

1. Mr. Ullem elected to receive 100% of his 2025 board and committee cash retainer fees in Illumina stock. The number of shares issued in lieu of cash is based on the quotient of (i) the cash compensation otherwise payable for the immediately completed quarter divided by (ii) the volume weighted average closing price per share during the immediately completed quarter, calculated by reference to each trading day during such quarter. The amount reported on this Form represents Mr. Ullem's 3rd quarter 2025 retainer fees.

	By: Robert Maynes for Scott B. Ullem	10/02/2025
	** 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.

FAQ

What did Scott B. Ullem report on Form 4 for ILMN?

He reported acquiring 252 shares on 09/30/2025 issued in lieu of cash retainer fees at $99.1666 per share, resulting in 8,389 shares beneficially owned.

Why were the 252 shares issued to Scott B. Ullem?

Mr. Ullem elected to receive 100% of his 2025 board and committee cash retainer fees in Illumina stock; shares are calculated using the quarter’s volume-weighted average closing price.

Is the ownership reported direct or indirect?

The filing shows the ownership form as Direct.

When was the Form 4 signed and filed?

The signature on the Form 4 is dated 10/02/2025.

Does the Form 4 show any derivative transactions?

No. Table II for derivative securities contains no reported transactions.