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Exelixis (NASDAQ: EXEL) EVP Dana Aftab reports tax-withholding of 30,578 shares

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

Rhea-AI Filing Summary

Exelixis EVP Dana Aftab reported routine share activity tied to equity compensation. On the Form 4, 30,578 shares of common stock were withheld by Exelixis at a price of $51.10 per share to cover taxes due upon vesting of previously granted restricted stock units.

After this tax-withholding disposition, Aftab holds 638,192 shares of Exelixis common stock directly, plus 5,835 shares indirectly through the company’s 401(k) plan. Footnotes also note additional unvested RSUs and performance-based stock units that may convert into common shares over time.

Positive

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Insider Aftab Dana
Role EVP, Research and Development
Type Security Shares Price Value
Tax Withholding Common Stock 30,578 $51.10 $1.56M
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 638,192 shares (Direct, null); Common Stock — 5,835 shares (Indirect, By 401(k))
Footnotes (1)
  1. Shares withheld by Exelixis, Inc. to satisfy taxes payable in connection with the vesting of restricted stock units ("RSUs") awarded on March 4, 2022, April 3, 2023, February 23, 2024, and February 26, 2025. Includes 405,966 shares of Exelixis, Inc. common stock ("Common Stock") that will be issued to the Reporting Person upon vesting of RSUs, the performance-based restricted stock unit award granted to the Reporting Person on March 31, 2025 ("One-Time Award PSUs") and 646 shares of Common Stock acquired on April 30, 2026, pursuant to the Exelixis, Inc. 2000 Employee Stock Purchase Plan. Each RSU is the economic equivalent of one share of Common Stock and each One-Time Award PSU represents a contingent right to receive one share of Common Stock. Represents shares of Common Stock under the Exelixis, Inc. 401(k) Plan, pursuant to a plan statement dated as of May 14, 2026.
Tax-withholding shares 30,578 shares Shares withheld to satisfy taxes on RSU vesting
Withholding price $51.10 per share Value used for tax-withholding disposition
Direct holdings after transaction 638,192 shares Common stock directly held after tax withholding
401(k) plan holdings 5,835 shares Common stock held indirectly via Exelixis 401(k) plan
Unvested RSUs and PSUs 405,966 units RSUs and One-Time Award PSUs that may vest into common stock
Recent ESPP acquisition 646 shares Common stock acquired on April 30, 2026 under ESPP
restricted stock units financial
"vesting of restricted stock units ("RSUs") awarded on March 4, 2022, April 3, 2023, February 23, 2024, and February 26, 2025."
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
One-Time Award PSUs financial
"the performance-based restricted stock unit award granted to the Reporting Person on March 31, 2025 ("One-Time Award PSUs")"
Employee Stock Purchase Plan financial
"646 shares of Common Stock acquired on April 30, 2026, pursuant to the Exelixis, Inc. 2000 Employee Stock Purchase Plan."
An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.
401(k) Plan financial
"Represents shares of Common Stock under the Exelixis, Inc. 401(k) Plan, pursuant to a plan statement dated as of May 14, 2026."
A 401(k) plan is a workplace retirement account that lets employees set aside part of their pay into a tax-advantaged savings pot, often with employers adding matching contributions — like a workplace piggy bank for future income. It matters to investors because the amount people save and how employers fund these plans influence consumer spending, corporate payroll costs and the flow of money into financial markets, which can affect stock prices and company valuations.
tax-withholding disposition financial
"Payment of exercise price or tax liability by delivering securities"
A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.
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*
Aftab Dana

(Last)(First)(Middle)
C/O EXELIXIS, INC.
1851 HARBOR BAY PARKWAY

(Street)
ALAMEDA CALIFORNIA 94502

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
EXELIXIS, INC. [ EXEL ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
EVP, Research and Development
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026
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 Stock05/15/2026F30,578(1)D$51.1638,192(2)D
Common Stock5,835(3)IBy 401(k)
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. Shares withheld by Exelixis, Inc. to satisfy taxes payable in connection with the vesting of restricted stock units ("RSUs") awarded on March 4, 2022, April 3, 2023, February 23, 2024, and February 26, 2025.
2. Includes 405,966 shares of Exelixis, Inc. common stock ("Common Stock") that will be issued to the Reporting Person upon vesting of RSUs, the performance-based restricted stock unit award granted to the Reporting Person on March 31, 2025 ("One-Time Award PSUs") and 646 shares of Common Stock acquired on April 30, 2026, pursuant to the Exelixis, Inc. 2000 Employee Stock Purchase Plan. Each RSU is the economic equivalent of one share of Common Stock and each One-Time Award PSU represents a contingent right to receive one share of Common Stock.
3. Represents shares of Common Stock under the Exelixis, Inc. 401(k) Plan, pursuant to a plan statement dated as of May 14, 2026.
Remarks:
/s/ Nina Ayer, Attorney in Fact05/19/2026
** 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)

FAQ

What insider transaction did EXEL EVP Dana Aftab report on this Form 4?

Dana Aftab reported a tax-withholding disposition of 30,578 Exelixis common shares. The company withheld these shares at $51.10 each to pay taxes due on vesting restricted stock units, rather than selling shares in the open market.

How many EXEL shares were withheld to cover Dana Aftab’s tax liability?

Exelixis withheld 30,578 common shares from Dana Aftab. These shares, valued at $51.10 per share in the filing, were used to satisfy tax obligations triggered by the vesting of multiple restricted stock unit awards.

How many EXEL shares does Dana Aftab hold after this Form 4 transaction?

Following the reported tax withholding, Dana Aftab directly holds 638,192 Exelixis common shares. He also has an additional 5,835 shares held indirectly through the Exelixis 401(k) plan, as referenced in the plan statement dated May 14, 2026.

Does this EXEL Form 4 show any open-market buying or selling by Dana Aftab?

The Form 4 shows a Form F tax-withholding disposition, not an open-market trade. Shares were delivered to Exelixis to cover taxes on vesting RSUs, so it does not reflect a discretionary market purchase or sale decision by Aftab.

What future share issuances for Dana Aftab are referenced in the EXEL Form 4 footnotes?

Footnotes state that Aftab has 405,966 RSUs and performance-based stock units that may vest into common shares, plus 646 shares acquired via the Employee Stock Purchase Plan. These represent potential or recent additions to his overall equity position.