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Public ownership evidence

Altimmune, Inc. Common Stock (ALT) Ownership Disclosures

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

As of 2026-11-07T14:03:26.246Z

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2026-11-042026-11-02Greenleaf PeterA160,000Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-11-02 and its public availability date is 2026-11-04. Subtracting those calendar dates gives 2 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0001363683-26-000009 ↗SEC 0001795798-26-000009 ↗SEC 0002156820-26-000004 ↗

Recent Form 4 activity

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2026-11-042026-11-02Greenleaf PeterA160,000Not reported
2026-11-042026-11-02Howarth Alex G.A160,000Not reported
2026-10-022026-10-01MENZIUSO RICHARD THOMASA36,234Not reported
2026-10-022026-10-01MENZIUSO RICHARD THOMASA84,546Not reported
2026-08-142026-08-13Durso Jerome BenedictP15,000Not reported

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

Recent institutional filing receipts

Inspect all 50 displayed rows: 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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B. Riley Wealth Advisors, Inc.2025-03-312026-08-2924,300$121,500None
Corient Private Wealth LP2026-06-302026-08-2854,226$164,849None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-252,737$8,320None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-258,320$2,737,000None
Bernard Wealth Management Corp.2026-06-302026-08-2215$46None
Nantahala Capital Management, LLC2026-06-302026-08-201,500,000$4,560,000None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2053,115$161,470None
Corient Private Wealth LP2026-06-302026-08-1853,032$161,219None
Jefferies Financial Group Inc.2026-06-302026-08-18110,000$334,400None
Vines Capital Management, LLC2026-06-302026-08-1518,884$57,407None
EFG International AG2026-06-302026-08-1516,500$50,160None
Trails Edge Capital Partners, LP2026-06-302026-08-152,660,000$8,086,400None
Graham Capital Management, L.P.2026-06-302026-08-1544,940$136,618None
Rafferty Asset Management, LLC2026-06-302026-08-15225,060$684,182None
Susquehanna Portfolio Strategies, LLC2026-06-302026-08-15103,374$314,257None
Polymer Capital Management (US) LLC2026-06-302026-08-1514,001$42,563None
ADAR1 Capital Management, LLC2026-06-302026-08-15102,823$312,582None
Deep Track Capital, LP2026-06-302026-08-1519,250,000$58,520,000None
XTX Topco Ltd2026-06-302026-08-15128,088$389,388None
SYON CAPITAL LLC2026-06-302026-08-1517,118$52,039None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15624,499$1,898,477None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15624,499$1,898,477None
Foundations Investment Advisors, LLC2026-06-302026-08-1511,052$33,598None
Caption Management, LLC2026-06-302026-08-1546,617$141,716None
OSAIC HOLDINGS, INC.2026-06-302026-08-152,688$8,172None
OSAIC HOLDINGS, INC.2026-06-302026-08-1518,390$55,905None
Schonfeld Strategic Advisors LLC2026-06-302026-08-1535,077$106,633None
Squarepoint Ops LLC2026-06-302026-08-15202,380$615,235None
Man Group plc2026-06-302026-08-15173,872$528,571None
MetLife Investment Management, LLC2026-06-302026-08-15116,856$355,242None
Engineers Gate Manager LP2026-06-302026-08-1538,037$115,632None
Birchview Capital, LP2026-06-302026-08-15152,681$464,150None
JANE STREET GROUP, LLC2026-06-302026-08-1549,400$150,176Put
JANE STREET GROUP, LLC2026-06-302026-08-15227,400$691,296Call
Cormorant Asset Management, LP2026-06-302026-08-151,250,000$3,800,000None
LMR Partners LLP2026-06-302026-08-15300,000$912,000None
Legal & General Group Plc2026-06-302026-08-1519,289$58,639None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-151,799,300$5,469,872Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15325,700$990,128Put
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15720,004$2,188,812None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1511,074$33,665None
Xcelsior Advisor Partners LLC2026-06-302026-08-1513,000$39,520None
Aigen Investment Management, LP2026-06-302026-08-1513,496$41,028None
Weiss Asset Management LP2026-06-302026-08-151,530,803$4,653,641None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-153,309,122$10,059,731None
TANG CAPITAL MANAGEMENT LLC2026-06-302026-08-15666,022$2,024,707None
TCG Crossover Management, LLC2026-06-302026-08-1510,000,000$30,400,000None
SILVERCREST ASSET MANAGEMENT GROUP LLC2026-06-302026-08-15103,500$314,640None
JONES FINANCIAL COMPANIES LLLP2026-06-302026-08-1510,156$28,640None
AMERIPRISE FINANCIAL INC2026-06-302026-08-1523,953$72,817None

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

B. Riley Wealth Advisors, Inc. ↗Corient Private Wealth LP ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗Bernard Wealth Management Corp. ↗Nantahala Capital Management, LLC ↗MERCER GLOBAL ADVISORS INC /ADV ↗Corient Private Wealth LP ↗Jefferies Financial Group Inc. ↗Vines Capital Management, LLC ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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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.