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ALT Insider Trading

Insider Ownership Percentage: 1.60%
Insider Buying (Last 12 Months): $213,777.60
Insider Selling (Last 12 Months): $0.00

Altimmune Insider Trading History Chart

This chart shows the insider buying and selling history at Altimmune by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Altimmune Share Price & Price History

Current Price: $3.09
Price Change: ▲ Price Increase of +0.05 (1.64%)
As of 05/8/2026 04:00 PM ET

This chart shows the closing price history over time for ALT up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Altimmune Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
3/6/2026Gregory L. WeaverCFOBuy5,000$3.54$17,700.0028,078View SEC Filing Icon  
3/6/2026Jerome Benedict DursoCEOBuy20,000$3.54$70,800.0032,500View SEC Filing Icon  
1/8/2026Wayne PisanoDirectorBuy5,000$4.08$20,400.0013,498View SEC Filing Icon  
12/29/2025Diane JorkaskyDirectorBuy527$3.80$2,002.60527View SEC Filing Icon  
12/23/2025John GillDirectorBuy12,500$4.10$51,250.0012,500View SEC Filing Icon  
12/22/2025Jerome Benedict DursoDirectorBuy12,500$4.13$51,625.0012,500View SEC Filing Icon  
3/13/2025Gregory L. WeaverCFOBuy10,000$5.20$52,000.0010,000View SEC Filing Icon  
8/19/2024David DrutzDirectorSell16,011$6.90$110,475.9041,958View SEC Filing Icon  
8/15/2023David DrutzDirectorBuy300$2.88$864.0029,785View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Altimmune (NASDAQ:ALT)

78.05% of Altimmune stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at ALT by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Altimmune Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
5/7/2026Dimensional Fund Advisors LP1,045,926$3.22M0.0%+268.7%0.804%Search for SEC Filing on Google Icon
5/5/2026Bank of New York Mellon Corp413,503$1.27M0.0%+16.7%0.318%Search for SEC Filing on Google Icon
5/1/2026Beirne Wealth Consulting Services LLC411,858$1.27M0.4%+9.4%0.317%Search for SEC Filing on Google Icon
4/30/2026Hsbc Holdings PLC154,365$0.48M0.0%+16.7%0.119%Search for SEC Filing on Google Icon
4/27/2026PFG Investments LLC13,500$42K0.0%N/A0.010%Search for SEC Filing on Google Icon
4/27/2026Leonteq Securities AG65,000$0.20M0.0%+6,400.0%0.050%Search for SEC Filing on Google Icon
4/23/2026North Star Investment Management Corp.17,000$52K0.0%+112.5%0.013%Search for SEC Filing on Google Icon
4/22/2026Janney Montgomery Scott LLC172,610$0.53M0.0%+68.2%0.133%Search for SEC Filing on Google Icon
4/21/2026Wealth Effects LLC131,950$0.41M0.1%+18.1%0.101%Search for SEC Filing on Google Icon
4/16/2026SG Americas Securities LLC55,625$0.17M0.0%+426.0%0.043%Search for SEC Filing on Google Icon
3/20/2026Hsbc Holdings PLC132,221$0.47M0.0%+80.8%0.102%Search for SEC Filing on Google Icon
3/17/2026Rockefeller Capital Management L.P.43,167$0.16M0.0%+79,838.9%0.033%Search for SEC Filing on Google Icon
2/23/2026Virtu Financial LLC58,477$0.21M0.0%+21.7%0.052%Search for SEC Filing on Google Icon
2/19/2026Invesco Ltd.214,824$0.78M0.0%+32.7%0.190%Search for SEC Filing on Google Icon
2/18/2026Vines Capital Management LLC17,884$65K0.1%N/A0.016%Search for SEC Filing on Google Icon
2/18/2026Virtus Investment Advisers LLC50,482$0.18M0.0%+217.2%0.045%Search for SEC Filing on Google Icon
2/18/2026Wellington Management Group LLP257,271$0.93M0.0%-2.8%0.228%Search for SEC Filing on Google Icon
2/18/2026Susquehanna Portfolio Strategies LLC135,170$0.49M0.0%-27.0%0.120%Search for SEC Filing on Google Icon
2/18/2026Quadrature Capital Ltd10,101$36K0.0%N/A0.009%Search for SEC Filing on Google Icon
2/18/2026Millennium Management LLC207,383$0.75M0.0%-43.6%0.184%Search for SEC Filing on Google Icon
2/18/2026Man Group plc18,936$68K0.0%N/A0.017%Search for SEC Filing on Google Icon
2/18/2026Engineers Gate Manager LP87,264$0.32M0.0%+112.6%0.077%Search for SEC Filing on Google Icon
2/18/2026Balyasny Asset Management L.P.60,109$0.22M0.0%N/A0.053%Search for SEC Filing on Google Icon
2/17/2026Schonfeld Strategic Advisors LLC13,021$47K0.0%N/A0.012%Search for SEC Filing on Google Icon
2/17/2026AQR Capital Management LLC21,147$76K0.0%N/A0.019%Search for SEC Filing on Google Icon
2/17/2026Cetera Investment Advisers29,687$0.11M0.0%+46.9%0.026%Search for SEC Filing on Google Icon
2/17/2026Northeast Financial Group Inc.13,393$48K0.0%N/A0.012%Search for SEC Filing on Google Icon
2/17/2026EFG International AG16,500$60K0.0%N/A0.015%Search for SEC Filing on Google Icon
2/17/2026Kovack Advisors Inc.35,215$0.13M0.0%N/A0.031%Search for SEC Filing on Google Icon
2/17/2026Jump Financial LLC242,017$0.87M0.0%+109.0%0.214%Search for SEC Filing on Google Icon
2/17/2026Price T Rowe Associates Inc. MD49,879$0.18M0.0%+20.2%0.044%Search for SEC Filing on Google Icon
2/17/2026Soviero Asset Management LP400,000$1.44M0.7%N/A0.355%Search for SEC Filing on Google Icon
2/17/2026Advisory Services Network LLC15,160$55K0.0%+69.2%0.013%Search for SEC Filing on Google Icon
2/17/2026&PARTNERS15,035$54K0.0%N/A0.013%Search for SEC Filing on Google Icon
2/17/2026ExodusPoint Capital Management LP11,921$43K0.0%-93.3%0.011%Search for SEC Filing on Google Icon
2/17/2026Royal Bank of Canada27,414$99K0.0%-58.9%0.024%Search for SEC Filing on Google Icon
2/17/2026Blair William & Co. IL56,434$0.20M0.0%N/A0.050%Search for SEC Filing on Google Icon
2/16/2026Squarepoint Ops LLC34,949$0.13M0.0%-94.0%0.031%Search for SEC Filing on Google Icon
2/16/2026Arax Advisory Partners8,165$29K0.0%+99.7%0.007%Search for SEC Filing on Google Icon
2/16/2026Barclays PLC400,595$1.45M0.0%+17.7%0.355%Search for SEC Filing on Google Icon
2/13/2026CreativeOne Wealth LLC10,500$38K0.0%N/A0.009%Search for SEC Filing on Google Icon
2/13/2026Marshall Wace LLP922,777$3.33M0.0%N/A0.818%Search for SEC Filing on Google Icon
2/13/2026Stifel Financial Corp123,416$0.45M0.0%+104.3%0.109%Search for SEC Filing on Google Icon
2/13/2026Schroder Investment Management Group469,013$1.69M0.0%N/A0.416%Search for SEC Filing on Google Icon
2/13/2026Rafferty Asset Management LLC195,766$0.71M0.0%+25.3%0.174%Search for SEC Filing on Google Icon
2/13/2026Charles Schwab Investment Management Inc.283,669$1.02M0.0%+38.7%0.251%Search for SEC Filing on Google Icon
2/13/2026State Street Corp5,119,703$18.48M0.0%+42.2%4.538%Search for SEC Filing on Google Icon
2/13/2026Vontobel Holding Ltd.15,000$54K0.0%N/A0.013%Search for SEC Filing on Google Icon
2/13/2026Martingale Asset Management L P14,355$52K0.0%N/A0.013%Search for SEC Filing on Google Icon
2/13/2026Caitong International Asset Management Co. Ltd12,322$44K0.1%N/A0.011%Search for SEC Filing on Google Icon
2/13/2026Wells Fargo & Company MN141,282$0.51M0.0%+52.1%0.125%Search for SEC Filing on Google Icon
2/12/2026DRW Securities LLC22,469$81K0.0%N/A0.020%Search for SEC Filing on Google Icon
2/12/2026MetLife Investment Management LLC38,193$0.14M0.0%-14.2%0.034%Search for SEC Filing on Google Icon
2/12/2026Commonwealth Equity Services LLC181,483$0.66M0.0%+4.2%0.161%Search for SEC Filing on Google Icon
2/12/2026Dimensional Fund Advisors LP283,703$1.02M0.0%-4.7%0.251%Search for SEC Filing on Google Icon
2/12/2026Steward Partners Investment Advisory LLC245,393$0.89M0.0%+11.9%0.217%Search for SEC Filing on Google Icon
2/12/2026Alps Advisors Inc.85,677$0.31M0.0%N/A0.076%Search for SEC Filing on Google Icon
2/12/2026Kovack Advisors Inc.35,215$0.13M0.0%N/A0.031%Search for SEC Filing on Google Icon
2/12/2026Nuveen LLC1,244,211$4.49M0.0%+514.9%1.103%Search for SEC Filing on Google Icon
2/11/2026Janney Montgomery Scott LLC102,610$0.37M0.0%+75.2%0.091%Search for SEC Filing on Google Icon
2/11/2026Deutsche Bank AG79,940$0.29M0.0%+4.0%0.071%Search for SEC Filing on Google Icon
2/11/2026Fox Run Management L.L.C.30,603$0.11M0.0%N/A0.027%Search for SEC Filing on Google Icon
2/11/2026LPL Financial LLC48,626$0.18M0.0%-21.0%0.043%Search for SEC Filing on Google Icon
2/11/2026Los Angeles Capital Management LLC128,529$0.46M0.0%N/A0.114%Search for SEC Filing on Google Icon
2/10/2026Goldman Sachs Group Inc.1,349,293$4.87M0.0%+140.0%1.196%Search for SEC Filing on Google Icon
2/10/2026AXQ Capital LP25,701$93K0.0%+25.8%0.023%Search for SEC Filing on Google Icon
2/10/2026Intech Investment Management LLC52,557$0.19M0.0%+36.0%0.047%Search for SEC Filing on Google Icon
2/9/2026Geode Capital Management LLC2,292,410$8.28M0.0%+13.6%2.032%Search for SEC Filing on Google Icon
2/6/2026Keudell Morrison Wealth Management18,500$67K0.0%N/A0.016%Search for SEC Filing on Google Icon
2/6/2026Brown Wealth Management LLC258,673$0.93M0.2%+10.7%0.229%Search for SEC Filing on Google Icon
2/6/2026ProShare Advisors LLC20,816$75K0.0%+21.9%0.018%Search for SEC Filing on Google Icon
2/3/2026SBI Securities Co. Ltd.8,837$32K0.0%+27.9%0.008%Search for SEC Filing on Google Icon
2/2/2026PKS Advisory Services LLC15,100$55K0.0%N/A0.013%Search for SEC Filing on Google Icon
1/29/2026Beirne Wealth Consulting Services LLC376,458$1.36M0.4%-8.3%0.361%Search for SEC Filing on Google Icon
1/29/2026Concurrent Investment Advisors LLC26,508$96K0.0%+10.4%0.025%Search for SEC Filing on Google Icon
1/28/2026Kingswood Wealth Advisors LLC36,000$0.13M0.0%+133.8%0.035%Search for SEC Filing on Google Icon
1/27/2026Summit Financial Wealth Advisors LLC103,288$0.37M0.1%+7.3%0.099%Search for SEC Filing on Google Icon
1/26/2026Wealth Effects LLC111,750$0.40M0.1%+86.7%0.107%Search for SEC Filing on Google Icon
1/14/2026Hennion & Walsh Asset Management Inc.214,632$0.78M0.0%+15.7%0.206%Search for SEC Filing on Google Icon
1/9/2026SG Americas Securities LLC10,575$38K0.0%-41.4%0.010%Search for SEC Filing on Google Icon
1/1/2026JPMorgan Chase & Co.99,191$0.37M0.0%-17.7%0.095%Search for SEC Filing on Google Icon
11/18/2025Advisory Services Network LLC8,960$34K0.0%-44.3%0.009%Search for SEC Filing on Google Icon
11/17/2025Sherbrooke Park Advisers LLC15,904$60K0.0%N/A0.015%Search for SEC Filing on Google Icon
11/17/2025Sig Brokerage LP34,502$0.13M0.0%N/A0.033%Search for SEC Filing on Google Icon
11/17/2025Millennium Management LLC367,582$1.39M0.0%-7,160.7%0.352%Search for SEC Filing on Google Icon
11/17/2025Brevan Howard Capital Management LP222,942$0.84M0.0%+67.4%0.214%Search for SEC Filing on Google Icon
11/17/2025Bank of America Corp DE320,440$1.21M0.0%-55.2%0.307%Search for SEC Filing on Google Icon
11/17/2025Ameriprise Financial Inc.74,312$0.28M0.0%-34.7%0.071%Search for SEC Filing on Google Icon
11/14/2025Creative Planning36,378$0.14M0.0%-11.6%0.035%Search for SEC Filing on Google Icon
11/14/2025Virtu Financial LLC48,068$0.18M0.0%-82.0%0.046%Search for SEC Filing on Google Icon
11/14/2025Two Sigma Investments LP1,996,848$7.53M0.0%+356.6%1.914%Search for SEC Filing on Google Icon
11/14/2025Bridgeway Capital Management LLC50,600$0.19M0.0%N/A0.048%Search for SEC Filing on Google Icon
11/14/2025Caption Management LLC130,000$0.49M0.0%-570.7%0.125%Search for SEC Filing on Google Icon
11/14/2025Squarepoint Ops LLC584,696$2.20M0.0%N/A0.560%Search for SEC Filing on Google Icon
11/13/2025BNP Paribas Financial Markets74,533$0.28M0.0%+638.3%0.071%Search for SEC Filing on Google Icon
11/13/2025Russell Investments Group Ltd.13,929$53K0.0%+197.6%0.013%Search for SEC Filing on Google Icon
11/13/2025DLD Asset Management LP50,000$0.19M0.0%+121.2%0.048%Search for SEC Filing on Google Icon
11/12/2025Barclays PLC340,283$1.28M0.0%+16.5%0.326%Search for SEC Filing on Google Icon
11/12/2025Dimensional Fund Advisors LP297,789$1.12M0.0%-33.5%0.285%Search for SEC Filing on Google Icon
11/12/2025Victory Capital Management Inc.10,061$38K0.0%N/A0.011%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Altimmune logo
Altimmune, Inc., a clinical stage biopharmaceutical company, focuses on developing treatments for obesity and liver diseases. The company's lead product candidate, pemvidutide, a GLP-1/glucagon dual receptor agonist that is in Phase 2 trial for the treatment of obesity and metabolic dysfunction-associated steatohepatitis. It is also developing HepTcell, an immunotherapeutic product candidate, which is in Phase 2 clinical trial for patients chronically infected with the hepatitis B virus. The company was formerly known as Vaxin Inc. and changed its name to Altimmune, Inc. in September 2015. Altimmune, Inc. was founded in 1997 is headquartered in Gaithersburg, Maryland.
Read More on Altimmune

Today's Range

Now: $3.09
Low: $3.01
High: $3.11

50 Day Range

MA: $3.42
Low: $2.60
High: $4.56

52 Week Range

Now: $3.09
Low: $2.56
High: $7.73

Volume

2,854,923 shs

Average Volume

5,495,651 shs

Market Capitalization

$402.01 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

0.18

Who are the company insiders with the largest holdings of Altimmune?

Altimmune's top insider investors include:
  1. Derace L Schaffer (Director)
  2. William Enright (Insider)
  3. Vipin K Garg (CEO)
  4. John Gill (Director)
  5. David Drutz (Director)
  6. Matthew Scott Harris (Insider)
  7. Jerome Benedict Durso (CEO)
  8. Gregory L Weaver (CFO)
  9. M Scot Roberts (Insider)
  10. Philip Hodges (Director)
Learn More about top insider investors at Altimmune.

Who are the major institutional investors of Altimmune?

Altimmune's top institutional investors include:
  1. Dimensional Fund Advisors LP — 0.80%
  2. Bank of New York Mellon Corp — 0.32%
  3. Beirne Wealth Consulting Services LLC — 0.32%
  4. Janney Montgomery Scott LLC — 0.13%
  5. Hsbc Holdings PLC — 0.12%
  6. Wealth Effects LLC — 0.10%
Learn More about top institutional investors of Altimmune stock.

Which institutional investors are buying Altimmune stock?

During the last quarter, ALT stock was purchased by institutional investors including:
  1. Dimensional Fund Advisors LP
  2. Janney Montgomery Scott LLC
  3. Leonteq Securities AG
  4. Bank of New York Mellon Corp
  5. SG Americas Securities LLC
  6. Beirne Wealth Consulting Services LLC
  7. Hsbc Holdings PLC
  8. Wealth Effects LLC
Within the last year, these company insiders have bought Altimmune stock:
  1. Jerome Benedict Durso (CEO)
  2. Gregory L Weaver (CFO)
  3. Wayne Pisano (Director)
  4. Jerome Benedict Durso (Director)
  5. John Gill (Director)
  6. Diane Jorkasky (Director)
Learn More investors buying Altimmune stock.

Altimmune Active Insiders

Jerome Benedict Durso
Jerome Benedict Durso
CEO
2 recent trades
Gregory L Weaver
Gregory L Weaver
CFO
1 recent trades
John Gill
Director
1 recent trades
Wayne Pisano
Wayne Pisano
Director
1 recent trades
Diane Jorkasky
Director
1 recent trades
Matthew Scott Harris
Matthew Scott Harris (Age 71)
Insider