NASDAQ:ALT

Altimmune Stock Insider Trading

Healthcare > Biotechnology

Buy ALT

*Your capital is at risk

$2.84

-0.140 (-4.70%)

At Close: Jul 31, 2026

Altimmune Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 97.61. In total, the insiders bought 7.36M and sold 83.48K ALT shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	97.61
● Buy	7.36M shares
● Sell	83.48K shares
87% Buy Activity Moderate Negative Correlation
Buy Signal High Confidence Dec 01, 2025 Analysis Breakdown: Strongly supported by a very high Insider Power Score of 97.61. Confidence increased due to high data reliability score of 100. Supported by overwhelming buy-side pressure (87% buys).

Historical Insider Trades

Date	Type	Person	Role	Amount
Jan 01, 2026 Sell	Common Stock, par value $0.0001 F-InKind	Jordt Raymond M Chief Business Officer	Officer	2 475 Value: $9K
Jan 01, 2026 Buy	Common Stock, par value $0.0001 M-Exempt	Jordt Raymond M Chief Business Officer	Officer	9 375 Value: $26.6K
Dec 29, 2025 Buy	Common Stock, par value $0.0001 P-Purchase	Jorkasky Diane Director	Director	527 Value: $2K
Dec 23, 2025 Buy	Common Stock, par value $0.0001 P-Purchase	Gill John Director	Director	12 500 Value: $51.3K
Dec 22, 2025 Buy	Common Stock, par value $0.0001 P-Purchase	Durso Jerome Benedict Director	Director	12 500 Value: $51.6K
Dec 01, 2025 Buy	Restricted Stock Units A-Award	Durso Jerome Benedict CEO-elect	CEO / President	633 700 Value: $3.12M
Dec 01, 2025 Buy	Stock Options (option to buy) A-Award	Durso Jerome Benedict CEO-elect	CEO / President	1 824 400 Value: $8.99M
Nov 11, 2025 Sell	Common Stock, par value $0.0001 F-InKind	Weaver Gregory L Chief Financial Officer	C-Suite Officer	5 672 Value: $24.3K
Nov 11, 2025 Buy	Common Stock, par value $0.0001 M-Exempt	Weaver Gregory L Chief Financial Officer	C-Suite Officer	18 750 Value: $80.3K
Nov 11, 2025 Buy	Restricted Stock Units M-Exempt	Weaver Gregory L Chief Financial Officer	C-Suite Officer	18 750 Value: $80.3K
Oct 01, 2025 Buy	Stock Options (option to buy) A-Award	Weaver Gregory L Chief Financial Officer	C-Suite Officer	166 800 Value: $645.5K
Oct 01, 2025 Buy	Restricted Stock Units A-Award	Weaver Gregory L Chief Financial Officer	C-Suite Officer	57 900 Value: $224.1K
Oct 01, 2025 Buy	Stock Options (option to buy) A-Award	Arbet-engels Christophe Chief Medical Officer	Officer	450 000 Value: $1.74M
Oct 01, 2025 Buy	Restricted Stock Units A-Award	Arbet-engels Christophe Chief Medical Officer	Officer	150 000 Value: $580.5K
Oct 01, 2025 Buy	Common Stock J-Other	Arbet-engels Christophe Officer	Officer	0 Value: $0
Oct 01, 2025 Buy	Common Stock J-Other	Arbet-engels Christophe Officer	Officer	0 Value: $0
Oct 01, 2025 Buy	Restricted Stock Units A-Award	Arbet-engels Christophe Chief Medical Officer	Officer	150 000 Value: $580.5K
Oct 01, 2025 Buy	Stock Options (option to buy) A-Award	Arbet-engels Christophe Chief Medical Officer	Officer	450 000 Value: $1.74M
Oct 01, 2025 Buy	Restricted Stock Units A-Award	Weaver Gregory L Chief Financial Officer	C-Suite Officer	57 900 Value: $224.1K
Oct 01, 2025 Buy	Stock Options (option to buy) A-Award	Weaver Gregory L Chief Financial Officer	C-Suite Officer	166 800 Value: $645.5K
Sep 25, 2025 Buy	Stock Options (option to buy) A-Award	Sohn Catherine A. Director	Director	48 800 Value: $191.3K
Sep 25, 2025 Buy	Stock Options (option to buy) A-Award	Durso Jerome Benedict Director	Director	48 800 Value: $191.3K
Sep 25, 2025 Buy	Stock Options (option to buy) A-Award	Lawver Teri L Director	Director	48 800 Value: $191.3K
Sep 25, 2025 Buy	Stock Options (option to buy) A-Award	Jorkasky Diane Director	Director	48 800 Value: $191.3K
Sep 25, 2025 Buy	Stock Options (option to buy) A-Award	Gill John Director	Director	48 800 Value: $191.3K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks