Was the Xencor (XNCR) CFO’s transaction an open-market sale or tax-related?

While coded as a sale, the Form 4 footnote explains the 3,499 shares were sold to pay withholding taxes. The transaction is therefore tax-related and tied to the vesting of 14,088 restricted stock units, rather than a purely discretionary open-market liquidation of holdings.

What compensation event triggered the Xencor (XNCR) CFO’s share sale?

The sale was triggered by the vesting of 14,088 restricted stock units held by the CFO. When these units vested, a portion of the resulting shares—3,499 shares—was sold specifically to cover associated withholding tax obligations, as disclosed in the Form 4 footnote.

Xencor (XNCR) CFO sells 3,499 shares to cover tax on vested RSUs

Filing Impact

(Neutral)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Xencor Inc senior vice president and CFO Bart Jan Cornelissen reported a sale of 3,499 shares of common stock on April 10, 2026 at an average price of $12.2865 per share. According to the filing, these shares were sold to pay withholding taxes upon the vesting of 14,088 restricted stock units, making this a compensation-related, tax-driven transaction rather than a discretionary open-market sale. After this sale, Cornelissen directly owned 75,898 shares of Xencor common stock.

Insider Trade Summary

Net Seller: 3,499 shares ($42,990)

Net Sell 1 txn

Insider Cornelissen Bart Jan

Role SR. VICE PRESIDENT & CFO

Sold 3,499 shs ($43K)

Type	Security	Shares	Price	Value
Sale	Common Stock	3,499	$12.2865	$43K

Holdings After Transaction: Common Stock — 75,898 shares (Direct)

Footnotes (1)

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Key Figures

Shares sold: 3,499 shares Sale price: $12.2865 per share Shares after transaction: 75,898 shares +1 more

4 metrics

Shares sold 3,499 shares Common stock sold on April 10, 2026

Sale price $12.2865 per share Average price for reported sale

Shares after transaction 75,898 shares Direct holdings following sale

Vested RSUs 14,088 units Restricted stock units vesting that triggered tax sale

Key Terms

restricted stock units, withholding taxes, open-market sale, Common Stock

4 terms

restricted stock units financial

"Represents the disposition of shares that were sold to pay withholding taxes upon vesting of 14,088 restricted stock units."

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.

withholding taxes financial

"Represents the disposition of shares that were sold to pay withholding taxes upon vesting of 14,088 restricted stock units."

Withholding taxes are amounts a payer or government takes out of payments — such as wages, interest, or dividends — before the recipient gets the money, functioning like a cashier keeping part of a bill to pay taxes on your behalf. For investors this matters because it reduces the cash they actually receive, affects net returns and yield calculations, and may require additional paperwork or treaty claims to recover or offset the withheld amount against final tax bills.

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"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.

Form 4 Insider Transactions: What Each Field Means →

04/13/2026 - 04:01 PM

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

CALIFORNIA

91107

(City)

(State)

(Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/10/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	04/10/2026		S		3,499⁽¹⁾	D	$12.2865	75,898	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Represents the disposition of shares that were sold to pay withholding taxes upon vesting of 14,088 restricted stock units.

Remarks:

	/s/ Celia E. Eckert, Attorney-in-Fact	04/13/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Xencor (XNCR) report for its CFO?

Xencor reported that CFO Bart Jan Cornelissen sold 3,499 shares of common stock. The shares were sold on April 10, 2026, and the filing states the sale was used to cover withholding taxes on vesting restricted stock units rather than a discretionary open-market trade.

At what price did the Xencor (XNCR) CFO’s Form 4 shares sell?

The reported 3,499 Xencor shares sold at an average price of $12.2865 per share. This price reflects the transaction used to satisfy withholding tax obligations tied to the vesting of 14,088 restricted stock units granted as part of compensation.

How many Xencor (XNCR) shares does the CFO hold after this Form 4?

Following the reported transaction, CFO Bart Jan Cornelissen directly owned 75,898 shares of Xencor common stock. This post-transaction figure shows his remaining equity position after selling 3,499 shares to fund tax withholding on recently vested restricted stock units.