Insider Transactions Reported by 20 Insiders of Altimmune, Inc.

Symbol
ALT on Nasdaq
Location
Gaithersburg, MD

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Quick Takeaways

  • ALT - Altimmune, Inc. has 20 insiders with reported activity on this page.
  • Net insider value flow over the last year: +$294,438.
  • Recent transaction rows are available for direct filing-level review.

What Changed

  • Buy value: $294,438; sell value: $0.
  • Net share flow: <span class="text-green-600">+81,027</span>.

Why This Matters

  • This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
  • Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Official SEC Source

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insiders trading volume in the past year

Insider trading buckets (0-12 months)

Altimmune, Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Vipin K. Garg Director $2,487,141 Mixed 30 Jan 2026
M. Scot Roberts Chief Scientific Officer $589,541 Mixed 26 Feb 2026
Richard I. Eisenstadt Chief Financial Officer $441,118 Mixed 30 Jan 2024
Raymond M. Jordt Chief Business Officer $405,012 Mixed 31 Jan 2026
David Drutz Director $382,005 Filing P/S 19 Aug 2024
Matthew Scott Harris Chief Medical Officer $331,151 Mixed 31 Jul 2025
William Michael Brown Chief Financial Officer $199,361 Mixed 31 Jul 2021
Jerome Benedict Durso President and CEO, Director $149,150 +$169,459 +114% Filing P/S 01 Apr 2026
Gregory L. Weaver Chief Financial Officer $119,941 +$49,199 +70% Filing P/S 01 Apr 2026
Andrew Shutterly Acting Chief Financial Officer $61,523 Mixed 31 Jul 2024
Wayne Pisano Director $55,098 +$20,410 +59% Filing P/S 08 Jan 2026
John Gill Director $51,249 +$51,250 +100% Filing P/S 23 Dec 2025
Catherine A. Sohn Director $6,352 +$2,118 +50% Filing P/S 05 Jan 2026
Diane Jorkasky Director $2,002 +$2,003 +100% Filing P/S 29 Dec 2025
Christophe Arbet-Engels Chief Medical Officer Mixed 01 Oct 2025
Philip Hodges Director Mixed 25 Sep 2025
Klaus Schafer Director Mixed 25 Sep 2025
Teri L. Lawver Director Mixed 25 Sep 2025
Mitchel Sayare Director Mixed 25 Sep 2025
Linda M. Richardson Chief Commercial Officer Mixed 16 Sep 2025

Recent Insider Transactions by Companies or Individuals for Altimmune, Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Gregory L. Weaver ALT Common Stock, par value $0.0001 Purchase 35.6% $31,499 $3.15 10,000 38,078 01 Apr 2026 Direct
Jerome Benedict Durso ALT Common Stock, par value $0.0001 Purchase 46.2% $47,100 $3.14 15,000 47,500 01 Apr 2026 Direct
Gregory L. Weaver ALT Common Stock, par value $0.0001 Purchase 21.7% $17,700 $3.54 5,000 28,078 06 Mar 2026 Direct
Jerome Benedict Durso ALT Common Stock, par value $0.0001 Purchase 160% $70,790 $3.54 20,000 32,500 06 Mar 2026 Direct
M. Scot Roberts ALT Restricted Stock Units Award 95,430 95,430 26 Feb 2026 Direct
M. Scot Roberts ALT Stock Options (option to buy) Award 222,670 222,670 26 Feb 2026 Direct
Gregory L. Weaver ALT Restricted Stock Units Award 111,000 111,000 26 Feb 2026 Direct
Gregory L. Weaver ALT Stock Options (option to buy) Award 259,000 259,000 26 Feb 2026 Direct
M. Scot Roberts ALT Common Stock, par value $0.0001 Tax liability -2.02% -2,329 112,824 02 Feb 2026 Direct
M. Scot Roberts ALT Common Stock, par value $0.0001 Options Exercise 7.24% 7,775 115,153 02 Feb 2026 Direct
M. Scot Roberts ALT Restricted Stock Units Options Exercise -100% -7,775 0 02 Feb 2026 Direct
M. Scot Roberts ALT Common Stock, par value $0.0001 Award 5.47% 5,567 107,378 31 Jan 2026 Direct
Raymond M. Jordt ALT Common Stock, par value $0.0001 Award 6.97% 4,571 70,107 31 Jan 2026 Direct
Vipin K. Garg ALT Common Stock, par value $0.0001 Award 1.66% 6,926 424,519 31 Jan 2026 Direct
M. Scot Roberts ALT Common Stock, par value $0.0001 Tax liability -2.73% -2,859 101,811 30 Jan 2026 Direct
M. Scot Roberts ALT Common Stock, par value $0.0001 Options Exercise 9.72% 9,275 104,670 30 Jan 2026 Direct
M. Scot Roberts ALT Restricted Stock Units Options Exercise -50% -9,275 9,275 30 Jan 2026 Direct
Vipin K. Garg ALT Common Stock, par value $0.0001 Tax liability -2.71% -11,632 417,593 30 Jan 2026 Direct
Vipin K. Garg ALT Common Stock, par value $0.0001 Options Exercise 6.65% 26,775 429,225 30 Jan 2026 Direct
Vipin K. Garg ALT Restricted Stock Units Options Exercise -50% -26,775 26,775 30 Jan 2026 Direct
Raymond M. Jordt ALT Common Stock, par value $0.0001 Tax liability -6.06% -4,229 65,536 27 Jan 2026 Direct
Raymond M. Jordt ALT Common Stock, par value $0.0001 Options Exercise 29.4% 15,850 69,765 27 Jan 2026 Direct
Raymond M. Jordt ALT Restricted Stock Units Options Exercise -25% -15,850 47,550 27 Jan 2026 Direct
M. Scot Roberts ALT Common Stock, par value $0.0001 Tax liability -4.74% -4,748 95,395 27 Jan 2026 Direct
M. Scot Roberts ALT Common Stock, par value $0.0001 Options Exercise 18.8% 15,850 100,143 27 Jan 2026 Direct
M. Scot Roberts ALT Restricted Stock Units Options Exercise -25% -15,850 47,550 27 Jan 2026 Direct
Vipin K. Garg ALT Common Stock, par value $0.0001 Tax liability -4.26% -17,898 402,450 27 Jan 2026 Direct
Vipin K. Garg ALT Common Stock, par value $0.0001 Options Exercise 10.9% 41,200 420,348 27 Jan 2026 Direct
Vipin K. Garg ALT Restricted Stock Units Options Exercise -25% -41,200 123,600 27 Jan 2026 Direct
Raymond M. Jordt ALT Common Stock, par value $0.0001 Tax liability -6.67% -3,855 53,915 25 Jan 2026 Direct
Raymond M. Jordt ALT Common Stock, par value $0.0001 Options Exercise 33.8% 14,600 57,770 25 Jan 2026 Direct
Raymond M. Jordt ALT Restricted Stock Units Options Exercise -33.3% -14,600 29,200 25 Jan 2026 Direct
M. Scot Roberts ALT Common Stock, par value $0.0001 Tax liability -4.93% -4,373 84,293 25 Jan 2026 Direct
M. Scot Roberts ALT Common Stock, par value $0.0001 Options Exercise 19.7% 14,600 88,666 25 Jan 2026 Direct
M. Scot Roberts ALT Restricted Stock Units Options Exercise -33.3% -14,600 29,200 25 Jan 2026 Direct
Vipin K. Garg ALT Common Stock, par value $0.0001 Tax liability -4.53% -17,984 379,148 25 Jan 2026 Direct
Vipin K. Garg ALT Common Stock, par value $0.0001 Options Exercise 11.8% 42,050 397,132 25 Jan 2026 Direct
Vipin K. Garg ALT Restricted Stock Units Options Exercise -33.3% -42,050 84,100 25 Jan 2026 Direct
Wayne Pisano ALT Common Stock, par value $0.0001 Purchase 58.8% $20,410 $4.08 5,000 13,498 08 Jan 2026 Direct
Catherine A. Sohn ALT Common Stock, par value $0.0001 Purchase 50% $2,118 $4.24 500 1,500 05 Jan 2026 Direct
Raymond M. Jordt ALT Common Stock, par value $0.0001 Tax liability -5.42% -2,475 43,170 01 Jan 2026 Direct
Raymond M. Jordt ALT Common Stock, par value $0.0001 Options Exercise 25.8% 9,375 45,645 01 Jan 2026 Direct
Raymond M. Jordt ALT Restricted Stock Units Options Exercise -50% -9,375 9,375 01 Jan 2026 Direct
Diane Jorkasky ALT Common Stock, par value $0.0001 Purchase $2,003 $3.80 527 527 29 Dec 2025 Direct
John Gill ALT Common Stock, par value $0.0001 Purchase $51,250 $4.10 12,500 12,500 23 Dec 2025 Direct
Jerome Benedict Durso ALT Common Stock, par value $0.0001 Purchase $51,569 $4.13 12,500 12,500 22 Dec 2025 Direct
Jerome Benedict Durso ALT Restricted Stock Units Award 633,700 633,700 01 Dec 2025 Direct
Jerome Benedict Durso ALT Stock Options (option to buy) Award 1,824,400 1,824,400 01 Dec 2025 Direct
Gregory L. Weaver ALT Common Stock, par value $0.0001 Tax liability -19.7% -5,672 23,078 11 Nov 2025 Direct
Gregory L. Weaver ALT Common Stock, par value $0.0001 Options Exercise 187.5% 18,750 28,750 11 Nov 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

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