SIGA · Insider trading · 13F holders · Congress trades
Siga Technologies Inc (SIGA)
Who is buying and selling SIGA: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 2
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
SIGA at a glance
- No open-market insider purchases or sales of SIGA were filed in the last 90 days.
- 2 13F filers hold SIGA among their 50 largest positions, worth $13.3M combined. The biggest bets by portfolio weight are First Wilshire Securities Management Inc (1.0%) and AltraVue Capital, LLC (0.6%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
- No member of Congress has disclosed a trade in SIGA.
SIGA insider trading
No open-market insider purchases or sales of SIGA were filed in the last 90 days.
Who owns SIGA? Hedge funds and superinvestors
2 13F filers hold SIGA among their 50 largest positions, worth $13.3M combined. The biggest bets by portfolio weight are First Wilshire Securities Management Inc (1.0%) and AltraVue Capital, LLC (0.6%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| AltraVue Capital, LLCHedge fund | 0.6% | $8.5M | 2,327,144 | -4.3% shares | Q2 2026 |
| First Wilshire Securities Management IncWealth manager | 1.0% | $4.9M | 1,339,883 | +50.5% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 2). Screen SIGA in the grand portfolio →
SIGA stock trades by members of Congress
No member of Congress has disclosed a trade in SIGA.
SIGA questions and answers
Are insiders buying SIGA stock?
No open-market insider purchases or sales of SIGA were filed in the last 90 days.
Which hedge funds own SIGA?
2 13F filers hold SIGA among their 50 largest positions, worth $13.3M combined. The biggest bets by portfolio weight are First Wilshire Securities Management Inc (1.0%) and AltraVue Capital, LLC (0.6%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
Has Congress traded SIGA?
No member of Congress has disclosed a trade in SIGA.
Who is the largest holder of SIGA?
Among 13F filers, AltraVue Capital, LLC reports the largest SIGA position, $8.5M (2,327,144 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is First Wilshire Securities Management Inc's: 1.0% of its portfolio.
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