[144] Xencor Inc SEC Filing

XNCR notice under Rule 144 reporting the proposed sale of 3,499 shares of Common Stock related to restricted stock vesting on 04/09/2026.

Rhea-AI Filing Summary

XNCR notice under Rule 144 reporting the proposed sale of 3,499 shares of Common Stock related to restricted stock vesting on 04/09/2026. The filing also shows 2,517 shares of Common Stock reported sold on 03/05/2026 by Bart Jan Cornelissen.

Insights

Securities Compliance Attorney

Rule 144 notice for vested restricted shares and a recent sale by a reporting person.

Form 144 is a notice of intent to sell securities under the safe-harbor for restricted or control securities. The filing lists 3,499 shares offered after restricted stock vesting on 04/09/2026.

Recent sale activity shows 2,517 shares sold on 03/05/2026. This filing documents planned resale activity and provides compliance traceability; cash-flow treatment and broker details are limited to the excerpt.

Key Figures

Shares offered: 3,499 shares Shares sold (past 3 months): 2,517 shares Dollar figure shown: $42,990.46 +1 more

4 metrics

Shares offered 3,499 shares Restricted Stock Vesting on 04/09/2026

Shares sold (past 3 months) 2,517 shares Sale by Bart Jan Cornelissen on 03/05/2026

Dollar figure shown $42,990.46 Appears near broker line (Fidelity) in excerpt

Form date reference 04/10/2026 Filer/brokerage line shows this date

Key Terms

Restricted Stock Vesting, Form 144, Fidelity Brokerage Services LLC

3 terms

Restricted Stock Vesting regulatory

"Restricted Stock Vesting | Issuer | 3499 | 04/09/2026"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Form 144 regulatory

"CONTENT TO ANALYZE: ... form_type: "144""

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Fidelity Brokerage Services LLC market

"Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917"

FAQ

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

What does XNCR's Form 144 report?

The filing reports an intended sale of 3,499 shares of XNCR Common Stock tied to restricted stock vesting on 04/09/2026. It also discloses a prior sale of 2,517 shares on 03/05/2026 by Bart Jan Cornelissen.

Who is listed as the seller in the XNCR Form 144?

The excerpt lists Bart Jan Cornelissen in the recent-sale section and a brokerage address for Fidelity Brokerage Services LLC. The Form 144 shows the reporting name and broker details as provided in the notice.

Are the shares in the XNCR Form 144 vested or restricted?

The filing specifically ties the 3,499 shares to Restricted Stock Vesting with an issuer source and a vesting date of 04/09/2026, indicating the shares became eligible for sale due to vesting.

Does the Form 144 show proceeds or sale price for XNCR shares?

The provided excerpt lists a monetary figure $42,990.46 adjacent to broker information, but the filing does not explicitly state proceeds or a per‑share sale price elsewhere in the excerpt.

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

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Accepted by SEC EDGAR 04/10/2026 - 03:16 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002018934
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Xencor Inc
SEC File Number	001-36182
Address of Issuer	465 N. HALSTEAD ST. SUITE 200 PASADENA CALIFORNIA 91107
Phone	626-305-5900
Name of Person for Whose Account the Securities are To Be Sold	Cornelissen Bart Jan
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	3499	42990.46	73338642	04/10/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	04/09/2026	Restricted Stock Vesting	Issuer			3499	04/09/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Bart Jan Cornelissen 465 North Halstead Street Suite 200 Pasadena CA 91107	Common	03/05/2026	2517	28304.92

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	04/10/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Adam Gehring, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Bart Jan Cornelissen
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)