Altimmune, Inc. (ALT) Insider Ownership

Historic Insider Ownership Trends

As of April 17, 2026, the three largest insider holders of ALT are Vipin K Garg (President And Ceo, 424.52K shares), M Scot Roberts (Chief Scientific Officer, 112.82K shares), M Scot Roberts (Chief Scientific Officer, 112.82K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Vipin K Garg President And Ceo 424,519 0 02 Feb, 2026
M Scot Roberts Chief Scientific Officer 112,824 0 03 Feb, 2026
M Scot Roberts Chief Scientific Officer 112,824 0 03 Feb, 2026
Raymond M Jordt Chief Business Officer 70,107 0 02 Feb, 2026
Raymond M Jordt Chief Business Officer 70,107 0 02 Feb, 2026
David Drutz - 0 55,524 20 Aug, 2024
Jerome Benedict Durso President And Ceo 47,500 0 01 Apr, 2026
Richard I Eisenstadt Chief Financial Officer 45,012 0 01 Feb, 2024
Gregory L Weaver Chief Financial Officer 38,078 0 01 Apr, 2026
Gregory L Weaver Chief Financial Officer 38,078 0 01 Apr, 2026
John Gill - 21,700 0 06 Apr, 2026
David Drutz - 20,151 0 21 Nov, 2022
William Michael Brown Chief Financial Officer 17,721 0 06 Aug, 2021
Matthew Scott Harris Chief Medical Officer 16,087 0 04 Aug, 2025
Matthew Scott Harris Chief Medical Officer 16,087 0 04 Aug, 2025
Wayne Pisano - 13,498 0 09 Jan, 2026
Andrew Shutterly Acting Chief Financial Officer 11,372 0 01 Aug, 2024
Andrew Shutterly Acting Chief Financial Officer 11,372 0 01 Aug, 2024
Klaus Schafer - 9,179 0 22 Jun, 2022
Klaus Schafer - 9,179 0 22 Jun, 2022
Catherine A. Sohn - 1,500 0 05 Jan, 2026
Catherine A. Sohn - 1,500 0 05 Jan, 2026
Diane Jorkasky - 527 0 29 Dec, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
06 Apr, 2026 John Gill Common Stock, par value $0.0001 A 9,200 $3.41 21,700 D P
01 Apr, 2026 Gregory L Weaver Common Stock, par value $0.0001 A 10,000 $3.15 38,078 D P
06 Mar, 2026 Gregory L Weaver Common Stock, par value $0.0001 A 5,000 $3.54 28,078 D P
26 Feb, 2026 Gregory L Weaver Stock Options (option to buy) A 259,000 $0.00 259,000 D A
26 Feb, 2026 M Scot Roberts Stock Options (option to buy) A 222,670 $0.00 222,670 D A
26 Feb, 2026 M Scot Roberts Restricted Stock Units A 95,430 $0.00 95,430 D A
26 Feb, 2026 Gregory L Weaver Restricted Stock Units A 111,000 $0.00 111,000 D A
30 Jan, 2026 M Scot Roberts Common Stock, par value $0.0001 A 9,275 $0.00 104,670 D M
30 Jan, 2026 M Scot Roberts Common Stock, par value $0.0001 D 2,859 $5.60 101,811 D F
31 Jan, 2026 M Scot Roberts Common Stock, par value $0.0001 A 5,567 $3.07 107,378 D A
02 Feb, 2026 M Scot Roberts Common Stock, par value $0.0001 A 7,775 $0.00 115,153 D M
02 Feb, 2026 M Scot Roberts Common Stock, par value $0.0001 D 2,329 $5.55 112,824 D F
30 Jan, 2026 M Scot Roberts Restricted Stock Units D 9,275 $0.00 9,275 D M
02 Feb, 2026 M Scot Roberts Restricted Stock Units D 7,775 $0.00 0 D M
31 Jan, 2026 Raymond M Jordt Common Stock, par value $0.0001 A 4,571 $3.07 70,107 D A
27 Jan, 2026 M Scot Roberts Common Stock, par value $0.0001 A 15,850 $0.00 100,143 D M
27 Jan, 2026 Raymond M Jordt Common Stock, par value $0.0001 A 15,850 $0.00 69,765 D M
27 Jan, 2026 Raymond M Jordt Common Stock, par value $0.0001 D 4,229 $6.18 65,536 D F
27 Jan, 2026 M Scot Roberts Common Stock, par value $0.0001 D 4,748 $6.18 95,395 D F
27 Jan, 2026 M Scot Roberts Restricted Stock Units D 15,850 $0.00 47,550 D M