XOMA Corp DE false 0000791908 0000791908 2023-10-31 2023-10-31 0000791908 us-gaap:CommonStockMember 2023-10-31 2023-10-31 0000791908 us-gaap:SeriesAPreferredStockMember 2023-10-31 2023-10-31 0000791908 us-gaap:SeriesBPreferredStockMember 2023-10-31 2023-10-31





Washington, D.C. 20549







Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event Reported): October 31, 2023




(Exact Name of Registrant as Specified in Charter)




DELAWARE   001-39801   52-2154066

(State or Other Jurisdiction

of Incorporation)



File Number)


(I.R.S. Employer

Identification Number)

2200 Powell Street, Suite 310, Emeryville, California 94608

(Address of Principal Executive Offices) (Zip Code)

(510) 204-7200

(Registrant’s telephone number, including area code)

(Former name or former address, if changed since last report)



Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:


Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)


Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)


Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))


Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:


Title of each class:





Name of each exchange

on which registered:

Common Stock, $0.0075 par value   XOMA   The Nasdaq Global Market
8.625% Series A Cumulative Perpetual Preferred Stock, par value $0.05 per share   XOMAP   The Nasdaq Global Market
Depositary Shares (each representing 1/1000th interest in a share of 8.375% Series B Cumulative Perpetual Preferred Stock, par value $0.05 per share)   XOMAO   The Nasdaq Global Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐




Item 8.01 Other Events.

On October 31, 2023, XOMA Corporation (the “Company”) announced that it became eligible for a $5 million milestone payment in connection with the U.S. Food and Drug Administration’s acceptance of Day One Biopharmaceuticals, Inc.’s New Drug Application for tovorafenib as a monotherapy for relapsed or progressive pediatric low-grade glioma. As previously announced, in March 2021, for a $13.5 million upfront cash payment plus a share of a future event-based milestone, the Company acquired up to $54 million in potential milestones and mid-single digit royalties associated with tovorafenib, in addition to the economics associated with vosaroxin, from Viracta Therapeutics, Inc. (“Viracta”) pursuant to that certain Royalty Purchase Agreement, dated March 22, 2021, by and between XOMA (US) LLC and Viracta, previously filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2021 (File No. 001-39801), filed with the Securities and Exchange Commission on May 6, 2021.


Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


Date: October 31, 2023     By:  


      Thomas Burns
      Senior Vice President, Finance and Chief Financial Officer