UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
Date of report (Date of earliest event reported): January 7, 2026
SELLAS Life Sciences Group, Inc.
(Exact name of registrant as specified in its charter)
| Delaware | 001-33958 | 20-8099512 | ||
| (State or other jurisdiction of incorporation or organization) | (Commission File Number) | (I.R.S. Employer Identification No.) | ||
| 7 Times Square, Suite 2503 New York, NY 10036 | ||||
| (Address of Principal Executive Offices) (Zip Code) | ||||
| Registrant’s telephone number, including area code: (646) 200-5278 | ||||
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligations 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 | Trading symbol(s) | Name of each exchange on which registered |
| Common Stock, $0.0001 par value per share | SLS | The Nasdaq Stock Market LLC |
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).
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 2.02. | Results of Operations and Financial Condition. |
As of December 31, 2025, SELLAS Life Sciences Group, Inc. (the “Company”) estimates that its unaudited cash and cash equivalents position was $71.8 million. This amount is unaudited and preliminary and is subject to the completion of financial closing procedures, including management’s reviews. As a result, this amount may differ materially from the amount that will be reflected in the Company’s financial statements as of and for the year ended December 31, 2025.
| Item 8.01 | Other Events |
Subsequent to December 31, 2025, the Company received approximately $26.5 million in proceeds from the exercise of common stock warrants.
As of January 7, 2026, the Company had 170,282,026 shares of common stock outstanding.
| 2 |
| Item 9.01. | Financial Statements and Exhibits. |
(d) Exhibits
| Exhibit Number | Description | |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |
| 3 |
SIGNATURES
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.
| SELLAS Life Sciences Group, Inc. | ||||
| Date: | January 8, 2026 | By: | /s/ John T. Burns | |
| Name: | John T. Burns | |||
| Title: | Senior Vice President, Chief Financial Officer | |||