SLS
SELLAS Life Sciences Group, Inc.
Pharmaceutical PreparationsNasdaqNon-accelerated filer<br>Smaller reporting company
Total Trades
7
Buys
4
Sells
3
Largest Trade
$100K–$500K
Insiders
6
Institutional Funds
87
Inst. Value
$1M+
Activist Filings
7
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Kalin Katherine Bach | Director | BUY | $100K–$500K | 63K | $1.59 | Nov 21, 2025 |
| VAN NOSTRAND ROBERT L | Director | BUY | $1K–$15K | 10K | $1.48 | Jun 13, 2025 |
| Wasman Jane | Director | BUY | $15K–$50K | 20K | $1.69 | Jun 2, 2025 |
| Kalin Katherine Bach | Director | BUY | $15K–$50K | 20K | $1.80 | May 22, 2025 |
| Stergiou Angelos M. | President and CEO | SELL | $15K–$50K | 6K | $2.61 | Dec 5, 2022 |
| Burns John Thomas | Senior VP | SELL | $1K–$15K | 1K | $2.59 | Dec 5, 2022 |
| WOOD BARBARA A | EVP | SELL | $1K–$15K | 2K | $2.59 | Dec 5, 2022 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 87 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| VANGUARD GROUP INC | 7.4M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 2.6M | $1M+ | SH |
| STATE STREET CORP | 2.2M | $1M+ | SH |
| TUDOR INVESTMENT CORP ET AL | 686K | $1M+ | SH (Call) |
| MORGAN STANLEY | 628K | $1M+ | SH |
| DAGCO, INC. | 578K | $1M+ | SH |
| NOMURA HOLDINGS INC | 524K | $1M+ | SH (Call) |
| Clear Street Group Inc. | 500K | $1M+ | SH |
| Everhart Financial Group, Inc. | 466K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 408K | $1M+ | SH |
| GSA CAPITAL PARTNERS LLP | 345K | $1M+ | SH |
| Opus Capital Group, LLC | 317K | $1M+ | SH |
| BARCLAYS PLC | 198K | $500K+ | SH |
| Mariner, LLC | 159K | $500K+ | SH |
| WELLS FARGO & COMPANY/MN | 146K | $500K+ | SH |
| RHUMBLINE ADVISERS | 129K | $100K–$500K | SH |
| LPL Financial LLC | 96K | $100K–$500K | SH |
| Bank of New York Mellon Corp | 67K | $100K–$500K | SH |
| STONERIDGE INVESTMENT PARTNERS LLC | 61K | $100K–$500K | SH |
| Caitong International Asset Management Co., Ltd | 55K | $100K–$500K | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
Highbridge Capital Management, LLC
SC 13G/A · Jan 30, 2026
3.7%
6.5M shares
SC 13G · Nov 14, 2025
5.7%
6.0M shares
SC 13G · Oct 17, 2025
5.4%
5.7M shares
SC 13G/A · Aug 15, 2025
4.9%
5.2M shares
SC 13G · Jul 29, 2025
6.7%
6.7M shares
SC 13G · May 15, 2025
8.3%
7.6M shares
Highbridge Capital Management, LLC
SC 13G/A · Nov 8, 2024
9.9%
13.3M shares