XOMA director receives 3,586-share RSU grant

Kosacz Barbara reported acquisition or exercise transactions in this Form 4 filing.

Accepted by SEC EDGAR 05/26/2026 - 06:07 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Kosacz Barbara reported acquisition or exercise transactions in this Form 4 filing.

XOMA Royalty Corp director Barbara Kosacz received a grant of 3,586 restricted stock units (RSUs) of common stock. The RSUs were awarded at no cash cost per unit and will vest in equal monthly installments over 12 months, conditioned on her continued service to the company. Following this equity award, she holds 9,557 shares of common stock directly.

Insider Trade Summary

Grant/Award: 3,586 shares

Grant/Award 1 txn

Insider Kosacz Barbara

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	3,586	$0.00	$0.00

Holdings After Transaction: Common Stock — 9,557 shares (Direct)

Holdings Before and After: Common Stock, 5,971 to 9,557 shares (Direct)

Footnotes (1)

1. F1. Consists of 3,586 restricted stock units ("RSUs"). Each RSU represents the right to receive, at settlement, one share of common stock of the Company and will vest in equal parts on a monthly basis, for 12 months from the date of grant, subject to the reporting person's continued service to the Company through such vesting date.

Key Figures

RSU grant size: 3,586 RSUs Grant price: $0.00 per share Post-transaction holdings: 9,557 shares +1 more

4 metrics

RSU grant size 3,586 RSUs Restricted stock unit award to director on 2026-05-21

Grant price $0.00 per share Equity compensation, not open-market purchase

Post-transaction holdings 9,557 shares Common stock directly held after RSU grant

Vesting schedule 12 monthly installments RSUs vest equally each month from grant date

Key Terms

restricted stock units, RSUs, vesting, grant, award, or other acquisition

4 terms

restricted stock units financial

"Consists of 3,586 restricted stock units ("RSUs"). Each RSU represents the right to receive, at settlement, one share of common stock"

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.

RSUs financial

"Consists of 3,586 restricted stock units ("RSUs"). Each RSU represents the right to receive"

RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.

vesting financial

"and will vest in equal parts on a monthly basis, for 12 months from the date of grant"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

grant, award, or other acquisition financial

"transaction_code_description": "Grant, award, or other acquisition""

FAQ

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

What did XOMA (XOMA) director Barbara Kosacz report in this Form 4?

Barbara Kosacz reported receiving 3,586 restricted stock units of XOMA common stock as an equity award. The grant is classified as an acquisition, not an open-market purchase, and increases her directly held common stock position to 9,557 shares.

Is the XOMA (XOMA) Form 4 transaction a stock purchase or an award?

The Form 4 shows an equity award, not a market purchase. Kosacz received 3,586 restricted stock units at a price of $0.00 per share, reflecting a compensation grant rather than a voluntary buy on the open market.

How do the 3,586 RSUs granted to XOMA director Kosacz vest?

The 3,586 restricted stock units vest in equal monthly installments over 12 months from the grant date. Each RSU will settle into one share of XOMA common stock, subject to Kosacz’s continued service through each monthly vesting date.

How many XOMA (XOMA) shares does Barbara Kosacz own after this Form 4 transaction?

After the reported RSU grant, Kosacz directly holds 9,557 shares of XOMA common stock. This figure reflects her position following the award of 3,586 restricted stock units disclosed in the Form 4 filing.

Does the XOMA (XOMA) Form 4 indicate any stock sales by Barbara Kosacz?

No stock sales are reported in this Form 4. The filing shows only a grant of 3,586 restricted stock units classified as an acquisition, with no dispositions, tax withholdings, or gifts reported for the transaction date.

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^*

Kosacz Barbara

(Last) (First) (Middle)

C/O XOMA ROYALTY CORPORATION

2200 POWELL STREET, SUITE 310

(Street)

EMERYVILLE CALIFORNIA 94608

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
XOMA Royalty Corp [ XOMA ]

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

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/21/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/21/2026		A		3,586(1)	A	$0	9,557	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. Consists of 3,586 restricted stock units ("RSUs"). Each RSU represents the right to receive, at settlement, one share of common stock of the Company and will vest in equal parts on a monthly basis, for 12 months from the date of grant, subject to the reporting person's continued service to the Company through such vesting date.

Remarks:

Exhibit 24 - Power of Attorney.

	/s/ Maricel Montano, Attorney-in-Fact for Barbara Kosacz	05/26/2026
	** 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)