Public ownership evidence

Atrium Therapeutics, Inc. Common Stock (RNA) Ownership Disclosures

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

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

Recent Form 4 activity

No records are available for this view.

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

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.

Cornerstone Financial Management LLC2026-03-312026-08-291$13None
Groupe la Francaise2026-06-302026-08-2680,273$1,079,672None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25171$2,300None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-252,300$171,000None
BOUSSARD & GAVAUDAN GESTION SAS2026-06-302026-08-2032,845$447,184None
Arbiter Partners Capital Management LLC2026-06-302026-08-20261,288$3,514,324None
CANTOR FITZGERALD, L. P.2026-06-302026-08-20256,917$3,455,534None
CRCM LP2026-06-302026-08-19641,539$8,628,700None
CRCM LP2026-06-302026-08-19641,539$8,628,700None
PenderFund Capital Management Ltd.2026-06-302026-08-18490$6,591None
Odyssean, LLC2026-06-302026-08-1521,233$285,584None
CAXTON ASSOCIATES LLP2026-06-302026-08-1544,230$594,894None
JPL Wealth Management, LLC2026-06-302026-08-156$81None
Basecamp Wealth Advisors LLC2026-06-302026-08-1556$753None
ADAR1 Capital Management, LLC2026-06-302026-08-1557,688$775,904None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15130,217$1,751,419None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15130,217$1,751,419None
ExodusPoint Capital Management, LP2026-06-302026-08-15117,275$1,577,349None
Caption Management, LLC2026-06-302026-08-1560,800$817,760Call
Caption Management, LLC2026-06-302026-08-1575,277$1,012,476None
OSAIC HOLDINGS, INC.2026-06-302026-08-152$27None
OSAIC HOLDINGS, INC.2026-06-302026-08-153$40None
Schonfeld Strategic Advisors LLC2026-06-302026-08-15199,158$2,678,673None
Squarepoint Ops LLC2026-06-302026-08-15146,743$1,973,693None
MetLife Investment Management, LLC2026-06-302026-08-1510,283$138,306None
BlueCrest Capital Management Ltd2026-06-302026-08-15100,000$1,345,000None
JANE STREET GROUP, LLC2026-06-302026-08-1536,082$485,303None
JANE STREET GROUP, LLC2026-06-302026-08-1573,728$991,642None
LMR Partners LLP2026-06-302026-08-1532,500$437,125None
ALETHEA CAPITAL MANAGEMENT, LLC2026-06-302026-08-1543,758$588,545None
AWM Investment Company, Inc.2026-06-302026-08-15107,500$1,445,875None
Legal & General Group Plc2026-06-302026-08-151,422$19,126None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15840,600$11,306,070Put
Bracebridge Capital, LLC2026-06-302026-08-15139,239$1,872,765None
683 Capital Management, LLC2026-06-302026-08-15300,000$4,035,000None
Sessa Capital IM, L.P.2026-06-302026-08-151,500,000$20,175,000None
DAFNA Capital Management LLC2026-06-302026-08-15128,000$1,721,600None
Weiss Asset Management LP2026-06-302026-08-15219,730$2,955,368None
Marble Bar Asset Management LLP2026-06-302026-08-15103,849$1,396,769None
Polar Asset Management Partners Inc.2026-06-302026-08-15150,000$2,017,500None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-15200,559$2,697,519None
Balyasny Asset Management L.P.2026-06-302026-08-15105,875$1,424,019None
JONES FINANCIAL COMPANIES LLLP2026-06-302026-08-1529$383None
Twin Securities, Inc.2026-06-302026-08-1526,517$356,654None
ADAGE CAPITAL PARTNERS GP, L.L.C.2026-06-302026-08-15100,000$1,345,000None
NEXPOINT ASSET MANAGEMENT, L.P.2026-06-302026-08-154,854$65,286None
NEXPOINT ASSET MANAGEMENT, L.P.2026-06-302026-08-15145,171$1,952,550None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1518$242None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-15457$6,147None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1521$282None

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

Recent Congressional disclosures

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.

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.