SIGA Technologies
SIGA · NASDAQ
$3.15+$0.01 (+0.32%)TodayMarket closed ·
Prev close $3.14
Who owns SIGA
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 62.9% of SIGA’s shares.
- MacAndrews & Forbes Holdings, Inc.33.7%
- Lewis (John Latane IV)7.3%
- BlackRock Institutional Trust Company, N.A.4.4%
- Dimensional Fund Advisors, L.P.3.8%
- Next 6 largest institutions13.6%
- All other shareholders37.1%
| Holder | Shares | % of shares |
|---|---|---|
| MacAndrews & Forbes Holdings, Inc. | 24.16M | 33.68% |
| Lewis (John Latane IV) | 5.27M | 7.35% |
| BlackRock Institutional Trust Company, N.A. | 3.18M | 4.43% |
| Dimensional Fund Advisors, L.P. | 2.72M | 3.79% |
| AltraVue Capital, LLC. | 2.33M | 3.24% |
| Vanguard Capital Management, LLC | 1.71M | 2.39% |
| American Century Investment Management, Inc. | 1.51M | 2.10% |
| Arrowstreet Capital, Limited Partnership | 1.47M | 2.06% |
| Geode Capital Management, L.L.C. | 1.42M | 1.98% |
| First Wilshire Securities Management, Inc. | 1.34M | 1.87% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Avantis US Small Cap Value ETF | 1.42M | 1.97% |
| Vanguard Total Stock Market Index Fund | 1.21M | 1.68% |
| iShares Russell 2000 ETF | 1.13M | 1.57% |
| DFA U.S. Targeted Value Portfolio | 502.59K | 0.70% |
| Vanguard Extended Market Index Fund | 492.40K | 0.69% |
Insider trades
Form 4 filings by officers, directors and large holders
Insiders made no open-market buys or sales of SIGA in the last 6 months.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Marshall Joseph W III | Award | 34.17K | — |
| Marshall Joseph W III | Option exercise | 24.12K | — |
| Marshall Joseph W III | Other | 7.24K | $31.76K |
| Marshall Joseph W III | Option exercise | 24.12K | — |
| KEANE JOHN M | Award | 34.17K | — |
| KEANE JOHN M | Option exercise | 24.12K | — |
| KEANE JOHN M | Other | 7.24K | $31.76K |
| KEANE JOHN M | Option exercise | 24.12K | — |
| Ford Harold Eugene Jr. | Award | 34.17K | — |
| Ford Harold Eugene Jr. | Option exercise | 24.12K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 3.60M
- Days to cover
- 5.21
- % of shares outstanding
- 5.02%
- Average daily volume
- 690.66K
- Change since last report
- −3.5%
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