NASDAQ:SIGA

Siga Stock Insider Trading

Healthcare > Drug Manufacturers - Specialty & Generic

Buy SIGA

*Your capital is at risk

$4.29

-0.0300 (-0.694%)

At Close: Jun 03, 2026

SIGA Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 74.93. In total, the insiders bought 1.94M and sold 249.18K SIGA 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)	74.93
● Buy	1.94M shares
● Sell	249.18K shares
72% Buy Activity Weak Negative Correlation
Buy Signal Medium Confidence Mar 13, 2026 Analysis Breakdown: Strongly supported by a very high Insider Power Score of 74.93. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Jun 10, 2025 Buy	Restricted Stock Units M-Exempt	Marshall Joseph W Iii Director	Director	19 084 Value: $118.7K
Jun 10, 2025 Buy	Common Stock, par value $.0001 per share M-Exempt	Durnan Jaymie A Director	Director	19 084 Value: $118.7K
Jun 10, 2025 Sell	Common Stock, par value $.0001 per share D-Return	Durnan Jaymie A Director	Director	5 725 Value: $35.6K
Jun 10, 2025 Buy	Restricted Stock Units A-Award	Durnan Jaymie A Director	Director	24 116 Value: $150.0K
Jun 10, 2025 Buy	Restricted Stock Units M-Exempt	Durnan Jaymie A Director	Director	19 084 Value: $118.7K
Jun 10, 2025 Buy	Common Stock, par value $.0001 per share M-Exempt	Nabel Gary J. Director	Director	19 084 Value: $118.7K
Jun 10, 2025 Sell	Common Stock, par value $.0001 per share D-Return	Nabel Gary J. Director	Director	5 725 Value: $35.6K
Jun 10, 2025 Buy	Restricted Stock Units A-Award	Nabel Gary J. Director	Director	24 116 Value: $150.0K
Jun 10, 2025 Buy	Restricted Stock Units M-Exempt	Nabel Gary J. Director	Director	19 084 Value: $118.7K
Jun 10, 2025 Buy	Restricted Stock Units M-Exempt	Nabel Gary J. Director	Director	19 084 Value: $118.7K
Jun 10, 2025 Buy	Restricted Stock Units A-Award	Nabel Gary J. Director	Director	24 116 Value: $150.0K
Jun 10, 2025 Sell	Common Stock, par value $.0001 per share D-Return	Nabel Gary J. Director	Director	5 725 Value: $35.6K
Jun 10, 2025 Buy	Common Stock, par value $.0001 per share M-Exempt	Nabel Gary J. Director	Director	19 084 Value: $118.7K
Jun 10, 2025 Buy	Restricted Stock Units M-Exempt	Durnan Jaymie A Director	Director	19 084 Value: $118.7K
Jun 10, 2025 Buy	Restricted Stock Units A-Award	Durnan Jaymie A Director	Director	24 116 Value: $150.0K
Jun 10, 2025 Sell	Common Stock, par value $.0001 per share D-Return	Durnan Jaymie A Director	Director	5 725 Value: $35.6K
Jun 10, 2025 Buy	Common Stock, par value $.0001 per share M-Exempt	Durnan Jaymie A Director	Director	19 084 Value: $118.7K
Jun 10, 2025 Buy	Restricted Stock Units M-Exempt	Marshall Joseph W Iii Director	Director	19 084 Value: $118.7K
Jun 10, 2025 Buy	Restricted Stock Units A-Award	Marshall Joseph W Iii Director	Director	24 116 Value: $150.0K
Jun 10, 2025 Sell	Common Stock, par value $.0001 per share D-Return	Marshall Joseph W Iii Director	Director	5 725 Value: $35.6K
Jun 10, 2025 Buy	Common Stock, par value $.0001 per share M-Exempt	Marshall Joseph W Iii Director	Director	19 084 Value: $118.7K
Jun 10, 2025 Buy	Restricted Stock Units M-Exempt	Phillips Holly L. Director	Director	19 084 Value: $118.7K
Jun 10, 2025 Buy	Restricted Stock Units A-Award	Phillips Holly L. Director	Director	24 116 Value: $150.0K
Jun 10, 2025 Sell	Common Stock, par value $.0001 per share D-Return	Phillips Holly L. Director	Director	5 725 Value: $35.6K
Jun 10, 2025 Buy	Common Stock, par value $.0001 per share M-Exempt	Phillips Holly L. Director	Director	19 084 Value: $118.7K

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

ABOUT SIGA TECHNOLOGIES INC

SIGA Technologies, Inc., a commercial-stage pharmaceutical company, focuses on the health security and infectious disease markets in the United States. Its lead product is TPOXX, an oral formulation antiviral drug for the treatment of human smallpox disease caused by variola virus. SIGA Technologies, Inc. has a strategic partnership with Cipla Therapeutics to deliver sustained innovation and access to antibacterial drugs primarily against biothre...

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