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  4. [Form 4] ILLUMINA, INC. Insider Trading Activity

Illumina (ILMN) director’s funds unload stock over 3 days

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

ILLUMINA, INC. (ILMN) director Keith A. Meister reported indirect sales of 375,941 shares of Illumina common stock on August 25–27, 2026. The shares were sold by Corvex-managed investment funds at weighted average prices from about $225.26 to $231.23 per share. Meister and Corvex disclaim beneficial ownership beyond their pecuniary interests. He also reports 6,780 shares held directly.

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Insider Meister Keith A.
Role Director
Sold 375,941 shs ($85.24M)
Type Security Shares Price Value
Sale Common Stock F10, F1, F2 4,873 $226.74 $1.10M
Sale Common Stock F11, F1, F2 54,309 $227.67 $12.36M
Sale Common Stock F12, F1, F2 24,363 $228.64 $5.57M
Sale Common Stock F13, F1, F2 16,990 $229.72 $3.90M
Sale Common Stock F14, F1, F2 28,439 $230.54 $6.56M
Sale Common Stock F15, F1, F2 9,405 $231.23 $2.17M
Sale Common Stock F6, F1, F2 38,213 $224.72 $8.59M
Sale Common Stock F7, F1, F2 53,123 $225.69 $11.99M
Sale Common Stock F8, F1, F2 14,782 $226.50 $3.35M
Sale Common Stock F9, F1, F2 425 $227.22 $97K
Sale Common Stock F3, F1, F2 92,776 $225.26 $20.90M
Sale Common Stock F4, F1, F2 38,201 $226.13 $8.64M
Sale Common Stock F5, F1, F2 42 $226.79 $10K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 1,033,910 shares (Indirect, See Footnotes); Common Stock — 6,780 shares (Direct)
Footnotes (15)
  1. F1. These securities of Illumina, Inc. (the "Issuer") are held for the accounts of certain private investment funds (collectively, the "Corvex Funds") for which Corvex Management LP ("Corvex") acts as investment adviser, including Corvex Master Fund LP and Corvex Select Equity Master Fund LP. The general partner of Corvex is controlled by Keith Meister.
  2. F2. For the purposes of this filing, each of Corvex and Mr. Meister disclaims beneficial ownership of the reported securities except to the extent of his or its pecuniary interest therein. This filing shall not be deemed an admission that Corvex or Mr. Meister is the beneficial owner of any of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise.
  3. F3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $224.77 to $225.76. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (3)-(15) to this Form 4.
  4. F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $225.77 to $226.75.
  5. F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $226.78 to $226.80.
  6. F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $224.09 to $225.08.
  7. F7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $225.09 to $226.08.
  8. F8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $226.09 to $226.95.
  9. F9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $227.09 to $227.50.
  10. F10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $226.04 to $227.03.
  11. F11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $227.04 to $228.03.
  12. F12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $228.04 to $229.03.
  13. F13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $229.04 to $230.03.
  14. F14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $230.04 to $231.03.
  15. F15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $231.04 to $231.71.
Total shares sold 375,941 shares Aggregate indirect sales of Illumina common stock on August 25–27, 2026
Largest single-day block 92,776 shares Indirect sale on August 25, 2026 at a weighted average price of $225.26 per share
Price example (low end, Column 4) $225.26 per share Weighted average sale price reported for 92,776-share transaction on August 25, 2026
Price example (high end, Column 4) $231.23 per share Weighted average sale price reported for 9,405-share transaction on August 27, 2026
Direct holdings after transactions 6,780 shares Directly owned Illumina common stock position reported as of August 25, 2026
Number of sell transactions 13 transactions Non-derivative open-market or private sale transactions reported in this Form 4
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
pecuniary interest financial
"disclaims beneficial ownership of the reported securities except to the extent of his or its pecuniary interest"
beneficial ownership regulatory
"disclaims beneficial ownership of the reported securities except to the extent"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
Section 16 of the Securities Exchange Act of 1934 regulatory
"for purposes of Section 16 of the Securities Exchange Act of 1934, as amended"
A provision of federal securities law that requires company insiders—directors, officers and large shareholders—to publicly report their stock holdings and trades and to surrender any “short-swing” profits from purchases and sales within a six-month window. It acts like a rule that forces leaders to announce their trades and prevents quick buy-sell windfalls, giving investors transparency into insider activity and reducing opportunities for unfair gain.
investment adviser financial
"for which Corvex Management LP ("Corvex") acts as investment adviser"
An investment adviser is a person or firm that professionally manages money and gives recommendations about buying, selling, or holding investments. Like a financial coach or guide, they have a legal duty to act in a client's best financial interest, so their advice, fees and potential conflicts can directly affect returns and risk — making their role important for investors who want informed, accountable help with portfolios.

FAQ

What insider activity did ILMN disclose for Keith A. Meister in this Form 4?
Keith A. Meister, a director of ILLUMINA, INC. (ILMN), reported indirect sales totaling 375,941 shares of Illumina common stock on August 25–27, 2026, executed through investment funds advised by Corvex Management LP.

How many ILMN shares were sold and over what period?
A total of 375,941 ILMN shares were sold over three trading days, from August 25 through August 27, 2026, across multiple open-market transactions reported in this Form 4.

At what prices were the ILMN shares sold in Keith Meister’s Form 4?
The reported sales of ILMN common stock were made at weighted average prices with Column 4 prices ranging from about $225.26 to $231.23 per share. Footnotes state that each figure represents a weighted average of multiple trades within specified price ranges.

Were the ILMN share sales made under a Rule 10b5-1 trading plan?
The Form 4 indicates that the Rule 10b5-1 checkbox is not marked as affirmatively adopted, and the footnotes do not state that these transactions were executed under a Rule 10b5-1 trading plan.

Does Keith A. Meister personally own the ILMN shares reported as sold?
The sold shares are held for the accounts of Corvex Funds advised by Corvex Management LP. The filing states that both Corvex and Keith A. Meister disclaim beneficial ownership of these securities except to the extent of their pecuniary interests.

How many ILMN shares does Keith A. Meister hold directly after these transactions?
After the reported transactions, Keith A. Meister is shown as holding 6,780 shares of Illumina common stock in a direct ownership capacity, separate from the indirectly held shares managed through Corvex-advised funds.

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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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*
Meister Keith A.
(Last)(First)(Middle)
C/O CORVEX MANAGEMENT LP
667 MADISON AVENUE
(Street)
NEW YORK NEW YORK 10065
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
ILLUMINA, INC. [ ILMN ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/25/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock08/25/2026S92,776D$225.26(3)1,317,075ISee Footnotes(1)(2)
Common Stock08/25/2026S38,201D$226.13(4)1,278,874ISee Footnotes(1)(2)
Common Stock08/25/2026S42D$226.79(5)1,278,832ISee Footnotes(1)(2)
Common Stock08/26/2026S38,213D$224.72(6)1,240,619ISee Footnotes(1)(2)
Common Stock08/26/2026S53,123D$225.69(7)1,187,496ISee Footnotes(1)(2)
Common Stock08/26/2026S14,782D$226.5(8)1,172,714ISee Footnotes(1)(2)
Common Stock08/26/2026S425D$227.22(9)1,172,289ISee Footnotes(1)(2)
Common Stock08/27/2026S4,873D$226.74(10)1,167,416ISee Footnotes(1)(2)
Common Stock08/27/2026S54,309D$227.67(11)1,113,107ISee Footnotes(1)(2)
Common Stock08/27/2026S24,363D$228.64(12)1,088,744ISee Footnotes(1)(2)
Common Stock08/27/2026S16,990D$229.72(13)1,071,754ISee Footnotes(1)(2)
Common Stock08/27/2026S28,439D$230.54(14)1,043,315ISee Footnotes(1)(2)
Common Stock08/27/2026S9,405D$231.23(15)1,033,910ISee Footnotes(1)(2)
Common Stock6,780D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. These securities of Illumina, Inc. (the "Issuer") are held for the accounts of certain private investment funds (collectively, the "Corvex Funds") for which Corvex Management LP ("Corvex") acts as investment adviser, including Corvex Master Fund LP and Corvex Select Equity Master Fund LP. The general partner of Corvex is controlled by Keith Meister.
2. For the purposes of this filing, each of Corvex and Mr. Meister disclaims beneficial ownership of the reported securities except to the extent of his or its pecuniary interest therein. This filing shall not be deemed an admission that Corvex or Mr. Meister is the beneficial owner of any of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise.
3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $224.77 to $225.76. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (3)-(15) to this Form 4.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $225.77 to $226.75.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $226.78 to $226.80.
6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $224.09 to $225.08.
7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $225.09 to $226.08.
8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $226.09 to $226.95.
9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $227.09 to $227.50.
10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $226.04 to $227.03.
11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $227.04 to $228.03.
12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $228.04 to $229.03.
13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $229.04 to $230.03.
14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $230.04 to $231.03.
15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions within the range of $231.04 to $231.71.
Name: /s/ Keith Meister08/27/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR