Security key
81642T209
SELLAS Life Sciences Group, Inc. - COMMON STOCK (SLS)
CUSIP: 81642T209
Q2 2026 13F Holders as of 30 Jun 2026
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 73,466,677
- Total 13F value
- $1,078,710,600
- Share change
- +18,620,229
- Put/Call ratio
- 109%
- SEC-reported price per share
- $14.76
- Number of holders
- 191
- Value change
- +$308,980,802
- Number of buys
- 134
- Number of sells
- 55
- Shares outstanding
- 185,665,114
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q2 2026
Institutions
191
Top holders
10
SLS full security history
Ownership snapshot
Full 13F holder table
SELLAS Life Sciences Group, Inc. SEC filings
SELLAS Life Sciences Group, Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of SLS - SELLAS Life Sciences Group, Inc. - COMMON STOCK (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
STATE STREET CORP
Disclosed value leader
STATE STREET CORP
Comparable rows
15/15
Latest evidence
30 Jun 2026
13D/G
13F
Lead comparable stake: 7%
13D/G row: STATE STREET CORP
Showing 1-6 of 15 holder rows.
Quick read
STATE STREET CORP leads the comparable SEC ownership view at 7%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens STATE STREET CORP's linked filing trail.
Comparable ownership
Top 5
STATE STREET CORP
7%
BlackRock, Inc.
6.8%
VANGUARD CAPITAL MANAGEMENT LLC
5.2%
Anson Funds Management LP
4.9%
HIGHBRIDGE CAPITAL MANAGEMENT LLC
3.7%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| STATE STREET CORP |
13D/G
13F
STATE STREET CORPORATION · Company
|
7%
|
$164,016,562
12,996,558 shares
|
$0 | 30 Jun 2026 |
| BlackRock, Inc. |
13F
13D/G
Company
|
6.8%
from 13D/G
|
$51,599,273
12,198,410 shares
|
— | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.2%
|
$121,988,428
9,666,278 shares
|
$0 | 30 Jun 2026 |
| Anson Funds Management LP |
13D/G
|
4.9%
|
$31,046,889
7,481,178 shares
|
+$6,010,196 | 31 Dec 2025 |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC |
13D/G
|
3.7%
|
$24,560,261
6,514,658 shares
|
$0 | 31 Dec 2025 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
2.1%
|
$16,554,768
3,912,606 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q2 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
191
Shares
73,466,677
Rows available
191
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q2 2026 vs Q1 2026 Across Filers
Q1 2026 holders
160
Q2 2026 holders
191
Holder diff
31
| Investor | Q1 2026 Shares | Q2 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q2 2026 value | Value change | Value Chg % |
|---|