[Form 4] Xencor Inc Insider Trading Activity

Rhea-AI Filing Summary

Xencor Inc reported that Senior Vice President and CFO Bart Jan Cornelissen received new equity awards. He was granted stock options for 116,750 shares of common stock at an exercise price of $0.00 per share, vesting over four years starting one year after March 2, 2026. He also acquired 19,458 restricted stock units that vest in three equal annual installments on the first, second, and third anniversaries of the grant date, contingent on continued service. Following these grants, he directly holds 81,914 shares of common stock.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Cornelissen Bart Jan

Role SR. VICE PRESIDENT & CFO

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	116,750	$0.00	--
Grant/Award	Common Stock	19,458	$0.00	--

Holdings After Transaction: Stock Option (Right to Buy) — 116,750 shares (Direct); Common Stock — 81,914 shares (Direct)

Footnotes (1)

1. Represents restricted stock units that vest as follows: 1/3 of the shares vest on the first, second and third anniversaries of the date of grant, subject to the Reporting Person's continuous service to the Issuer on and through each applicable vesting date, inclusive. Includes the following shares acquired by the Reporting Person pursuant to the Issuer's Employee Stock Purchase Plan: 1,108 shares acquired on June 10, 2025. 25% of the shares subject to the option shall vest on the one year anniversary of March 2, 2026 (the "Vesting Commencement Date"), and 1/48th of the shares shall vest monthly thereafter, such that the option shall be fully vested and exercisable on the four year anniversary of the Vesting Commencement Date, subject to the Reporting Person's continuous service to the Issuer on and through each applicable vesting date, inclusive.

Form 4 Insider Transactions: What Each Field Means →

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)
03/02/2026

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	03/02/2026		A		19,458(1)	A	$0	81,914(2)	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
Stock Option (Right to Buy)	$12.3	03/02/2026		A		116,750		(3)	03/02/2036	Common Stock	116,750	$0	116,750	D

Explanation of Responses:

1. Represents restricted stock units that vest as follows: 1/3 of the shares vest on the first, second and third anniversaries of the date of grant, subject to the Reporting Person's continuous service to the Issuer on and through each applicable vesting date, inclusive.

2. Includes the following shares acquired by the Reporting Person pursuant to the Issuer's Employee Stock Purchase Plan: 1,108 shares acquired on June 10, 2025.

3. 25% of the shares subject to the option shall vest on the one year anniversary of March 2, 2026 (the "Vesting Commencement Date"), and 1/48th of the shares shall vest monthly thereafter, such that the option shall be fully vested and exercisable on the four year anniversary of the Vesting Commencement Date, subject to the Reporting Person's continuous service to the Issuer on and through each applicable vesting date, inclusive.

Remarks:

	/s/ Celia E. Eckert, Attorney-in-Fact	03/04/2026
	** 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.

FAQ

What did XNCR CFO Bart Jan Cornelissen report in this Form 4?

He reported equity awards from Xencor. These include 116,750 stock options and 19,458 restricted stock units granted on March 2, 2026, both tied to continued employment and multi‑year vesting schedules, rather than open‑market share purchases or sales.

How many Xencor (XNCR) stock options were granted to the CFO?

He received 116,750 stock options. These options vest 25% on the one‑year anniversary of March 2, 2026, with the remaining 75% vesting in equal monthly installments over the following three years, subject to his continued service at Xencor.

What are the vesting terms of the XNCR restricted stock units granted?

The 19,458 restricted stock units vest in three equal installments. One‑third vests on each of the first, second, and third anniversaries of the grant date, provided Bart Jan Cornelissen remains continuously employed by Xencor through each applicable vesting date.

How many Xencor (XNCR) common shares does the CFO hold after these grants?

After the reported grant, he directly holds 81,914 common shares. This total reflects his updated ownership position, including shares previously acquired through Xencor’s Employee Stock Purchase Plan, and excludes the unexercised option awards reported in the derivative section.

Are these XNCR Form 4 transactions open-market purchases or sales?

No, they are not open‑market trades. The filing shows Form 4 code “A” transactions, representing grants or awards of stock options and restricted stock units from Xencor as part of compensation, rather than discretionary buying or selling in the open market.