Altimmune, Inc. (ALT) Insider Ownership

Historic Insider Ownership Trends

ALT's three largest insider shareholders as of May 30, 2026 are M Scot Roberts (Chief Scientific Officer, 112.82K shares), Raymond M Jordt (Chief Business Officer, 70.11K shares), Gregory L Weaver (Chief Financial Officer, 38.08K 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
Gregory L Weaver Chief Financial Officer 38,078 0 01 Apr, 2026
John Gill - 21,700 0 06 Apr, 2026
Catherine A. Sohn - 1,500 0 05 Jan, 2026
Klaus Schafer - 9,179 0 22 Jun, 2022
M Scot Roberts Chief Scientific Officer 112,824 0 03 Feb, 2026
Matthew Scott Harris Chief Medical Officer 16,087 0 04 Aug, 2025
Raymond M Jordt Chief Business Officer 70,107 0 02 Feb, 2026
Andrew Shutterly Acting Chief Financial Officer 11,372 0 01 Aug, 2024

* 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
01 Apr, 2026 Gregory L Weaver Common Stock, par value $0.0001 A 10,000 $3.15 38,078 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
06 Mar, 2026 Gregory L Weaver Common Stock, par value $0.0001 A 5,000 $3.54 28,078 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 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 Stock Options (option to buy) A 222,670 $0.00 222,670 D A
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
26 Feb, 2026 Gregory L Weaver Restricted Stock Units A 111,000 $0.00 111,000 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
26 Feb, 2026 M Scot Roberts Restricted Stock Units A 95,430 $0.00 95,430 D A
30 Jan, 2026 M Scot Roberts Common Stock, par value $0.0001 A 9,275 $0.00 104,670 D M