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SELLAS Life Sciences Group, Inc.

For the period ended Mar 31, 2026. Filed May 12, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Mar 31, 2026 · Filed May 12, 2026

SLS$8.58+1.9%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Item 6. Exhibits

Exhibit#DescriptionFormExhibitFiling Date
3.1Composite Amended and Restated Certificate of Incorporation of the Registrant (formerly, Galena Biopharma, Inc.) amended as of December 27, 201710-K3.1April 13, 2018
3.2Amended and Restated By-Laws of the Registrant8-K3.3January 5, 2018
10.1Sales Agreement, dated as of March 20, 2026, by and among SELLAS Life Sciences Group, Inc. and TD Securities (USA) LLC.S-31.2March 20, 2026
31.1Certification of Principal Executive Officer pursuant to Rule13a-14(a) and Rule 15d-14(a) of the Securities and Exchange Act, as amended.**
31.2Certification of Principal Financial Officer pursuant to Rule13a-14(a) and Rule 15d-14(a) of the Securities and Exchange Act, as amended.**
32.1Certification of Principal Executive Officer pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. ***
32.2Certification of Principal Financial Officer pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. ***
101.INSXBRL Instance Document.
101.SCHXBRL Taxonomy Extension Schema.
101.CALXBRL Taxonomy Extension Calculation Linkbase.
101.DEFXBRL Taxonomy Extension Definition Linkbase.
101.LABXBRL Taxonomy Extension Label Linkbase.
101.PREXBRL Taxonomy Extension Presentation Linkbase.
*Indicates management contract or compensatory plans or arrangements.
**Filed herewith
***The certifications attached as Exhibit 32.1 and Exhibit 32.2 accompany this Quarterly Report on Form 10-Q pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, and shall not be deemed “filed” by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall they be deemed incorporated by reference into any filing of the registrant under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, whether made before or after the date hereof, regardless of any general incorporation language in such filing.
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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.