Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0001104659-25-058140
Filing Date
2025-06-10
Accepted
2025-06-10 16:05:23
Documents
1

Document Format Files

Seq Description Document Type Size
1 DEFA14A tm2517629d1_defa14a.htm DEFA14A 27122
  Complete submission text file 0001104659-25-058140.txt   28450
Mailing Address 7 TIMES SQUARE SUITE 2503 NEW YORK NY 10036
Business Address 7 TIMES SQUARE SUITE 2503 NEW YORK NY 10036 6462005278
SELLAS Life Sciences Group, Inc. (Filer) CIK: 0001390478 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
Type: DEFA14A | Act: 34 | File No.: 001-33958 | Film No.: 251037094
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)