Xencor CFO sells shares to cover tax withholding

Xencor Inc. senior vice president and CFO Bart Jan Cornelissen reported an open-market sale of 2,517 shares of common stock on March 5, 2026 at an average price of $11.2455 per share.

Accepted by SEC EDGAR 03/09/2026 - 04:06 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Xencor Inc. senior vice president and CFO Bart Jan Cornelissen reported an open-market sale of 2,517 shares of common stock on March 5, 2026 at an average price of $11.2455 per share. According to the footnote, these shares were sold to pay withholding taxes upon the vesting of 7,316 restricted stock units, indicating a tax-related transaction rather than a discretionary sale. After this sale, Cornelissen directly holds 79,397 shares of Xencor common stock.

Insider Trade Summary

Net Seller: 2,517 shares

Net Sell 1 txn

Insider Cornelissen Bart Jan

Role SR. VICE PRESIDENT & CFO

Sold 2,517 shs ($28K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,517	$11.2455	$28K

Holdings After Transaction: Common Stock — 79,397 shares (Direct)

Footnotes (1)

1. F1. Represents the disposition of shares that were sold to pay withholding taxes upon vesting of 7,316 restricted stock units.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did XNCR CFO Bart Jan Cornelissen report?

Bart Jan Cornelissen reported selling 2,517 shares of Xencor common stock. The sale occurred on March 5, 2026 at an average price of $11.2455 per share, mainly to cover tax withholding obligations tied to restricted stock unit vesting.

Why did XNCR’s CFO sell 2,517 shares of Xencor stock?

The 2,517 shares were sold to pay withholding taxes upon vesting of 7,316 restricted stock units. This indicates the transaction was primarily tax-related, reflecting standard equity compensation mechanics rather than a purely discretionary decision to reduce ownership in Xencor.

How many Xencor (XNCR) shares does the CFO own after this transaction?

Following the reported sale, Bart Jan Cornelissen directly holds 79,397 shares of Xencor common stock. This figure reflects his remaining direct ownership after disposing of 2,517 shares in connection with tax withholding on recently vested restricted stock units.

What was the sale price for the XNCR shares sold by the CFO?

The reported sale price was an average of $11.2455 per share for the 2,517 shares of Xencor common stock. This price comes from an open-market transaction executed on March 5, 2026, tied to tax withholding from restricted stock unit vesting.

Was the XNCR insider transaction a routine tax-withholding sale?

Yes. The filing’s footnote explains the disposed shares were sold to pay withholding taxes related to the vesting of 7,316 restricted stock units. Such transactions are common when equity awards vest and taxes must be satisfied using a portion of the vested shares.

What role does Bart Jan Cornelissen hold at Xencor (XNCR)?

Bart Jan Cornelissen serves as Xencor’s Senior Vice President & Chief Financial Officer. His reported Form 4 transaction reflects activity in his personal holdings of Xencor common stock, including shares sold to address tax obligations on equity compensation vesting.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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^*

Cornelissen Bart Jan

(Last) (First) (Middle)

C/O XENCOR, INC.

465 N HALSTEAD STREET, SUITE 200

(Street)

PASADENA CA 91107

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Xencor Inc [ XNCR ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SR. VICE PRESIDENT & CFO

3. Date of Earliest Transaction (Month/Day/Year)
03/05/2026

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	03/05/2026		S		2,517(1)	D	$11.2455	79,397	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. Represents the disposition of shares that were sold to pay withholding taxes upon vesting of 7,316 restricted stock units.

Remarks:

	/s/ Celia E. Eckert, Attorney-in-Fact	03/09/2026
	** 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).
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