Public ownership evidence

SELLAS Life Sciences Group, Inc. Common Stock (SLS) Ownership Disclosures

Read SLS insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

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Step 1 of 3

Recent institutional filing receipts

SELLAS Life Sciences Group, Inc. Common Stock: source evidence dated 2026-10-10T12:08:28.848Z.

Manager
VIRGINIA RETIREMENT SYSTEMS ET Al
Report period
2026-06-30
Available
2026-08-26
Reported shares
17,400
Value (USD)
$256,824
Option
None
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

13F 0001005354-26-000003
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read SLS fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read SLS fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

No matching purchases, sales or awards were returned in this 90-day public filing window.

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No records are available for this view.

90-day public availability window, up to 50 records.

Recent institutional filing receipts

See the complete recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-2617,400$256,824None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25202,374$2,987,040None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-252,987,040$202,374,000None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2048,383$714,120None
PIN OAK INVESTMENT ADVISORS INC2026-06-302026-08-19280$4,000None
Jefferies Financial Group Inc.2026-06-302026-08-18200,100$2,953,476Put
Jefferies Financial Group Inc.2026-06-302026-08-18200,459$2,958,775None
SEI INVESTMENTS CO2026-06-302026-08-1526,581$392,336None
Aster Capital Management (DIFC) Ltd2026-06-302026-08-15750$11,070None
Glen Eagle Advisors, LLC2026-06-302026-08-152,176$32,118None
Rafferty Asset Management, LLC2026-06-302026-08-15239,892$3,540,806None
Nemes Rush Group LLC2026-06-302026-08-1510,000$147,600None
INSIGNEO ADVISORY SERVICES, LLC2026-06-302026-08-1512,562$185,415None
DIADEMA PARTNERS LP2026-06-302026-08-15100,000$1,476,000Put
DIADEMA PARTNERS LP2026-06-302026-08-15400,000$5,904,000Call
XTX Topco Ltd2026-06-302026-08-15359,090$5,300,168None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15565,008$8,339,518None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15565,008$8,339,518None
Caption Management, LLC2026-06-302026-08-15125,000$1,845,000Put
Caption Management, LLC2026-06-302026-08-1517,800$262,728Call
Caption Management, LLC2026-06-302026-08-1549,373$728,745None
OSAIC HOLDINGS, INC.2026-06-302026-08-1560,284$889,776None
Squarepoint Ops LLC2026-06-302026-08-1510,512$155,157None
MetLife Investment Management, LLC2026-06-302026-08-15110,082$1,624,810None
Engineers Gate Manager LP2026-06-302026-08-1514,995$221,326None
JANE STREET GROUP, LLC2026-06-302026-08-152,826$41,712None
JANE STREET GROUP, LLC2026-06-302026-08-15505,603$7,462,700None
JANE STREET GROUP, LLC2026-06-302026-08-15163,000$2,405,880Put
JANE STREET GROUP, LLC2026-06-302026-08-15749,200$11,058,192Call
LMR Partners LLP2026-06-302026-08-15450,000$6,642,000Put
BOOTHBAY FUND MANAGEMENT, LLC2026-06-302026-08-15202,100$2,982,996Put
Legal & General Group Plc2026-06-302026-08-15115,104$1,698,936None
Legal & General Group Plc2026-06-302026-08-1534,375$507,375None
Legal & General Group Plc2026-06-302026-08-1518,321$270,418None
Verition Fund Management LLC2026-06-302026-08-1562,100$916,596Put
Verition Fund Management LLC2026-06-302026-08-1556,400$832,464Call
Verition Fund Management LLC2026-06-302026-08-1562,100$916,596Put
Verition Fund Management LLC2026-06-302026-08-1556,400$832,464Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-157,157,200$105,640,272Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-154,189,200$61,832,592Put
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-152,050,597$30,266,812None
Ikarian Capital, LLC2026-06-302026-08-15354,700$5,235,372Put
Gotham Asset Management, LLC2026-06-302026-08-1574,344$1,097,317None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-15196,200$2,895,912Call
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-15906,000$13,372,560Put
Sio Capital Management, LLC2026-06-302026-08-151,230,700$18,165,132Put
&PARTNERS2026-06-302026-08-1510,690$157,784None
Sculptor Capital LP2026-06-302026-08-1530,300$447,228Put
Sculptor Capital LP2026-06-302026-08-1530,300$447,228None
Balyasny Asset Management L.P.2026-06-302026-08-15500,000$7,380,000Put

90-day public filing window, up to 50 source positions.

VIRGINIA RETIREMENT SYSTEMS ET Al ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗MERCER GLOBAL ADVISORS INC /ADV ↗PIN OAK INVESTMENT ADVISORS INC ↗Jefferies Financial Group Inc. ↗Jefferies Financial Group Inc. ↗SEI INVESTMENTS CO ↗Aster Capital Management (DIFC) Ltd ↗Glen Eagle Advisors, LLC ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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