Quick Takeaways
- SIGA - SIGA TECHNOLOGIES INC has 19 insiders with reported activity on this page.
- No net insider buy/sell flow is currently reported for the last year.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 19 Insiders of SIGA TECHNOLOGIES INC
- Symbol
- SIGA on Nasdaq
- Location
- New York, NY
What Changed
- No meaningful buy/sell imbalance is currently visible in the one-year window.
- Activity will update as new Forms 3/4/5 are filed.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsInsider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 17 May 2025.
Buys
$0
Shares: 0
Insiders: 0
Sells
$0
Shares: 0
Insiders: 0
Net
$0
Shares: 0
Insiders: 0
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
SIGA TECHNOLOGIES INC executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Eric A. Rose MD | Director | $6,486,360 | Mixed | 15 Jun 2021 | ||
| Joseph W. Marshall III | Director | $3,278,357 | Mixed | 10 Jun 2025 | ||
| Diem Nguyen | Chief Executive Officer, Director | $2,860,185 | Mixed | 13 Mar 2026 | ||
| Daniel J. Luckshire | Executive VP & CFO | $2,148,275 | Mixed | 13 Mar 2026 | ||
| Thomas E. Constance | Director | $1,989,782 | Mixed | 15 Jun 2021 | ||
| Dennis E. Hruby | EVP & Chief Scientific Officer | $1,595,391 | Mixed | 13 Mar 2026 | ||
| Jaymie A. Durnan | Director | $1,066,321 | Mixed | 10 Jun 2025 | ||
| Julian Nemirovsky | Director | $845,770 | Mixed | 10 Jun 2025 | ||
| Holly L. Phillips | Director | $845,770 | Mixed | 10 Jun 2025 | ||
| Gary J. Nabel | Director | $845,770 | Mixed | 10 Jun 2025 | ||
| James Antal | Director | $798,065 | Mixed | 14 Jun 2022 | ||
| Michael C. Plansky | Director | $549,954 | Mixed | 14 Jun 2022 | ||
| Larry R. Miller | General Counsel | $547,701 | Mixed | 25 Mar 2026 | ||
| Harold Eugene Ford Jr. | Director | $476,648 | Mixed | 10 Jun 2025 | ||
| Julie Kane | Director | $383,029 | Mixed | 14 Jun 2022 | ||
| Robin E. Abrams | General Counsel and CAO | $302,207 | Mixed | 31 Jul 2021 | ||
| Evan A. Knisely | Director | $285,962 | Mixed | 11 Jun 2024 | ||
| Jay Varma | EVP & Chief Medical Officer, Director | $135,962 | Mixed | 11 Jun 2024 | ||
| John M. Keane | Director | Mixed | 10 Jun 2025 |
Top shareholders of SIGA TECHNOLOGIES INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13D/G
13F
|
Company |
4.7%
|
3,386,798
|
$21,946,451 | $0 | 31 Mar 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
3.8%
|
2,702,724
|
$14,459,148 | — | 31 Mar 2026 | |
| AltraVue Capital, LLC |
13F
|
Company |
3.4%
|
2,432,024
|
$13,011,328 | — | 31 Mar 2026 | |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
|
Company |
2.4%
|
1,714,380
|
$9,171,933 | — | 31 Mar 2026 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
2.1%
|
1,525,960
|
$8,163,886 | — | 31 Mar 2026 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
1.8%
|
1,317,784
|
$7,050,144 | — | 31 Mar 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.8%
|
1,315,545
|
$7,039,567 | — | 31 Mar 2026 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.7%
|
1,219,677
|
$6,525,272 | — | 31 Mar 2026 | |
| Eric A. Rose MD |
3/4/5
|
Director |
—
class O/S missing
|
1,068,593
|
$6,486,360 | — | 15 Jun 2021 | |
| STATE STREET CORP |
13F
|
Company |
1.4%
|
1,011,938
|
$5,413,868 | — | 31 Mar 2026 | |
| FIRST WILSHIRE SECURITIES MANAGEMENT INC |
13F
|
Company |
1.2%
|
890,498
|
$4,764,164 | — | 31 Mar 2026 | |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.1%
|
827,047
|
$4,424,701 | — | 31 Mar 2026 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.98%
|
705,137
|
$3,772,483 | — | 31 Mar 2026 | |
| ROYCE & ASSOCIATES LP |
13F
|
Company |
0.93%
|
667,646
|
$3,571,906 | — | 31 Mar 2026 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.87%
|
624,903
|
$3,343,231 | — | 31 Mar 2026 | |
| Joseph W. Marshall III |
3/4/5
|
Director |
—
mixed-class rows
|
470,041
mixed-class rows
|
$3,278,357 | — | 10 Jun 2025 | |
| NEW YORK STATE COMMON RETIREMENT FUND |
13F
|
Company |
0.82%
|
590,761
|
$3,160,571 | — | 31 Mar 2026 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
|
Company |
0.81%
|
586,974
|
$3,140,311 | — | 31 Mar 2026 | |
| LSV ASSET MANAGEMENT |
13F
|
Company |
0.75%
|
538,630
|
$2,882,000 | — | 31 Mar 2026 | |
| Diem Nguyen |
3/4/5
|
Chief Executive Officer, Director |
—
mixed-class rows
|
411,010
mixed-class rows
|
$2,860,185 | — | 13 Mar 2026 | |
| Legato Capital Management LLC |
13F
|
Company |
0.71%
|
512,039
|
$2,739,409 | — | 31 Mar 2026 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.66%
|
475,013
|
$2,541,320 | — | 31 Mar 2026 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.65%
|
466,324
|
$2,494,833 | — | 31 Mar 2026 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
0.63%
|
456,385
|
$2,441,660 | — | 31 Mar 2026 | |
| DENALI ADVISORS LLC |
13F
|
Company |
0.61%
|
436,887
|
$2,337,345 | — | 31 Mar 2026 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.6%
|
433,661
|
$2,320,086 | — | 31 Mar 2026 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.58%
|
415,104
|
$2,220,806 | — | 31 Mar 2026 | |
| Daniel J. Luckshire |
3/4/5
|
Executive VP & CFO |
—
mixed-class rows
|
335,721
mixed-class rows
|
$2,148,275 | — | 13 Mar 2026 | |
| VICTORY CAPITAL MANAGEMENT INC |
13F
|
Company |
0.52%
|
376,571
|
$2,014,655 | — | 31 Mar 2026 | |
| Thomas E. Constance |
3/4/5
|
Director |
—
class O/S missing
|
327,806
|
$1,989,782 | — | 15 Jun 2021 | |
| Uniplan Investment Counsel, Inc. |
13F
|
Company |
0.52%
|
371,413
|
$1,987,060 | — | 31 Mar 2026 | |
| HRT FINANCIAL LP |
13F
|
Company |
0.5%
|
360,067
|
$1,926,000 | — | 31 Mar 2026 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.47%
|
340,321
|
$1,820,717 | — | 31 Mar 2026 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.47%
|
340,175
|
$1,819,937 | — | 31 Mar 2026 | |
| Dennis E. Hruby |
3/4/5
|
EVP & Chief Scientific Officer |
—
mixed-class rows
|
253,479
mixed-class rows
|
$1,595,391 | — | 13 Mar 2026 | |
| JACOBS LEVY EQUITY MANAGEMENT, INC |
13F
|
Company |
0.41%
|
291,846
|
$1,561,376 | — | 31 Mar 2026 | |
| VANGUARD FIDUCIARY TRUST CO |
13F
|
Company |
0.38%
|
275,178
|
$1,472,202 | — | 31 Mar 2026 | |
| MORGAN STANLEY |
13F
|
Company |
0.37%
|
263,335
|
$1,408,846 | — | 31 Mar 2026 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.36%
|
256,803
|
$1,373,897 | — | 31 Mar 2026 | |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. |
13F
|
Company |
0.34%
|
244,853
|
$1,310,000 | — | 31 Mar 2026 | |
| MACQUARIE GROUP LTD |
13F
|
Company |
0.34%
|
244,853
|
$1,309,964 | — | 31 Mar 2026 | |
| Jaymie A. Durnan |
3/4/5
|
Director |
—
mixed-class rows
|
154,503
mixed-class rows
|
$1,066,321 | — | 10 Jun 2025 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
0.26%
|
188,484
|
$1,007,000 | — | 31 Mar 2026 | |
| JANUS HENDERSON GROUP PLC |
13F
|
Company |
0.26%
|
187,521
|
$1,003,237 | — | 31 Mar 2026 | |
| AMERIPRISE FINANCIAL INC |
13F
|
Company |
0.25%
|
183,537
|
$981,924 | — | 31 Mar 2026 | |
| STATE OF WISCONSIN INVESTMENT BOARD |
13F
|
Company |
0.25%
|
177,800
|
$951,230 | — | 31 Mar 2026 | |
| Creative Planning |
13F
|
Company |
0.23%
|
168,555
|
$901,769 | — | 31 Mar 2026 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
0.22%
|
160,355
|
$857,899 | — | 31 Mar 2026 | |
| Gary J. Nabel |
3/4/5
|
Director |
—
mixed-class rows
|
124,503
mixed-class rows
|
$845,770 | — | 10 Jun 2025 | |
| Holly L. Phillips |
3/4/5
|
Director |
—
mixed-class rows
|
124,503
mixed-class rows
|
$845,770 | — | 10 Jun 2025 |
Recent Insider Transactions by Companies or Individuals for SIGA TECHNOLOGIES INC
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Larry R. Miller | SIGA | Common Stock, par value $.0001 per share | Tax liability | -6.36% | -3,526 | 51,912 | 25 Mar 2026 | Direct | ||
| Larry R. Miller | SIGA | Common Stock, par value $.0001 per share | Options Exercise | 14.3% | 6,920 | 55,438 | 25 Mar 2026 | Direct | ||
| Larry R. Miller | SIGA | Restricted Stock Units | Options Exercise | -50% | -6,920 | 6,921 | 25 Mar 2026 | Direct | ||
| Daniel J. Luckshire | SIGA | Common Stock, par value $.0001 per share | Tax liability | -2.12% | -6,074 | 280,493 | 13 Mar 2026 | Direct | ||
| Daniel J. Luckshire | SIGA | Common Stock, par value $.0001 per share | Options Exercise | 4.18% | 11,503 | 286,567 | 13 Mar 2026 | Direct | ||
| Daniel J. Luckshire | SIGA | Restricted Stock Units | Award | 55,228 | 55,228 | 13 Mar 2026 | Direct | |||
| Daniel J. Luckshire | SIGA | Restricted Stock Units | Options Exercise | -33.3% | -11,503 | 23,008 | 13 Mar 2026 | Direct | ||
| Dennis E. Hruby | SIGA | Common Stock, par value $.0001 per share | Tax liability | -1.95% | -3,955 | 198,537 | 13 Mar 2026 | Direct | ||
| Dennis E. Hruby | SIGA | Common Stock, par value $.0001 per share | Options Exercise | 5.99% | 11,445 | 202,492 | 13 Mar 2026 | Direct | ||
| Dennis E. Hruby | SIGA | Restricted Stock Units | Award | 54,942 | 54,942 | 13 Mar 2026 | Direct | |||
| Dennis E. Hruby | SIGA | Restricted Stock Units | Options Exercise | -33.3% | -11,445 | 22,891 | 13 Mar 2026 | Direct | ||
| Larry R. Miller | SIGA | Common Stock, par value $.0001 per share | Tax liability | -18.7% | -11,187 | 48,518 | 13 Mar 2026 | Direct | ||
| Larry R. Miller | SIGA | Common Stock, par value $.0001 per share | Options Exercise | 55.3% | 21,261 | 59,705 | 13 Mar 2026 | Direct | ||
| Larry R. Miller | SIGA | Restricted Stock Units | Award | 68,060 | 68,060 | 13 Mar 2026 | Direct | |||
| Larry R. Miller | SIGA | Restricted Stock Units | Options Exercise | -33.3% | -21,261 | 42,523 | 13 Mar 2026 | Direct | ||
| Diem Nguyen | SIGA | Common Stock, par value $.0001 per share | Tax liability | -25.3% | -47,029 | 138,767 | 13 Mar 2026 | Direct | ||
| Diem Nguyen | SIGA | Common Stock, par value $.0001 per share | Options Exercise | 84.4% | 85,045 | 185,796 | 13 Mar 2026 | Direct | ||
| Diem Nguyen | SIGA | Restricted Stock Units | Award | 272,243 | 272,243 | 13 Mar 2026 | Direct | |||
| Diem Nguyen | SIGA | Restricted Stock Units | Options Exercise | -33.3% | -85,045 | 170,092 | 13 Mar 2026 | Direct | ||
| Diem Nguyen | SIGA | Common Stock, par value $.0001 per share | Tax liability | -18.5% | -22,804 | 100,751 | 27 Jan 2026 | Direct | ||
| Diem Nguyen | SIGA | Common Stock, par value $.0001 per share | Options Exercise | 82.6% | 55,902 | 123,555 | 27 Jan 2026 | Direct | ||
| Diem Nguyen | SIGA | Restricted Stock Units | Options Exercise | -50% | -55,902 | 55,903 | 27 Jan 2026 | Direct | ||
| Daniel J. Luckshire | SIGA | Common Stock, par value $.0001 per share | Tax liability | -4.3% | -12,346 | 275,064 | 01 Jul 2025 | Direct | ||
| Daniel J. Luckshire | SIGA | Common Stock, par value $.0001 per share | Options Exercise | 9.19% | 24,193 | 287,410 | 01 Jul 2025 | Direct | ||
| Daniel J. Luckshire | SIGA | Restricted Stock Units | Options Exercise | -100% | -24,193 | 0 | 01 Jul 2025 | Direct | ||
| Dennis E. Hruby | SIGA | Common Stock, par value $.0001 per share | Tax liability | -5.19% | -10,467 | 191,047 | 01 Jul 2025 | Direct | ||
| Dennis E. Hruby | SIGA | Common Stock, par value $.0001 per share | Options Exercise | 19.1% | 32,258 | 201,514 | 01 Jul 2025 | Direct | ||
| Dennis E. Hruby | SIGA | Restricted Stock Units | Options Exercise | -100% | -32,258 | 0 | 01 Jul 2025 | Direct | ||
| John M. Keane | SIGA | Restricted Stock Units | Award | 24,116 | 24,116 | 10 Jun 2025 | Direct | |||
| Harold Eugene Ford Jr. | SIGA | Common Stock, par value $.0001 per share | Disposed to Issuer | -15.7% | -5,725 | 30,657 | 10 Jun 2025 | Direct | ||
| Harold Eugene Ford Jr. | SIGA | Common Stock, par value $.0001 per share | Options Exercise | 110.3% | 19,084 | 36,382 | 10 Jun 2025 | Direct | ||
| Harold Eugene Ford Jr. | SIGA | Restricted Stock Units | Award | 24,116 | 24,116 | 10 Jun 2025 | Direct | |||
| Harold Eugene Ford Jr. | SIGA | Restricted Stock Units | Options Exercise | -100% | -19,084 | 0 | 10 Jun 2025 | Direct | ||
| Julian Nemirovsky | SIGA | Common Stock, par value $.0001 per share | Disposed to Issuer | -9.15% | -5,725 | 56,873 | 10 Jun 2025 | Direct | ||
| Julian Nemirovsky | SIGA | Common Stock, par value $.0001 per share | Options Exercise | 43.9% | 19,084 | 62,598 | 10 Jun 2025 | Direct | ||
| Julian Nemirovsky | SIGA | Restricted Stock Units | Award | 24,116 | 24,116 | 10 Jun 2025 | Direct | |||
| Julian Nemirovsky | SIGA | Restricted Stock Units | Options Exercise | -100% | -19,084 | 0 | 10 Jun 2025 | Direct | ||
| Holly L. Phillips | SIGA | Common Stock, par value $.0001 per share | Disposed to Issuer | -9.15% | -5,725 | 56,873 | 10 Jun 2025 | Direct | ||
| Holly L. Phillips | SIGA | Common Stock, par value $.0001 per share | Options Exercise | 43.9% | 19,084 | 62,598 | 10 Jun 2025 | Direct | ||
| Holly L. Phillips | SIGA | Restricted Stock Units | Award | 24,116 | 24,116 | 10 Jun 2025 | Direct | |||
| Holly L. Phillips | SIGA | Restricted Stock Units | Options Exercise | -100% | -19,084 | 0 | 10 Jun 2025 | Direct | ||
| Joseph W. Marshall III | SIGA | Common Stock, par value $.0001 per share | Disposed to Issuer | -2.43% | -5,725 | 229,642 | 10 Jun 2025 | Direct | ||
| Joseph W. Marshall III | SIGA | Common Stock, par value $.0001 per share | Options Exercise | 8.82% | 19,084 | 235,367 | 10 Jun 2025 | Direct | ||
| Joseph W. Marshall III | SIGA | Restricted Stock Units | Award | 24,116 | 24,116 | 10 Jun 2025 | Direct | |||
| Joseph W. Marshall III | SIGA | Restricted Stock Units | Options Exercise | -100% | -19,084 | 0 | 10 Jun 2025 | Direct | ||
| Jaymie A. Durnan | SIGA | Common Stock, par value $.0001 per share | Disposed to Issuer | -7.38% | -5,725 | 71,873 | 10 Jun 2025 | Direct | ||
| Jaymie A. Durnan | SIGA | Common Stock, par value $.0001 per share | Options Exercise | 32.6% | 19,084 | 77,598 | 10 Jun 2025 | Direct | ||
| Jaymie A. Durnan | SIGA | Restricted Stock Units | Award | 24,116 | 24,116 | 10 Jun 2025 | Direct | |||
| Jaymie A. Durnan | SIGA | Restricted Stock Units | Options Exercise | -100% | -19,084 | 0 | 10 Jun 2025 | Direct | ||
| Gary J. Nabel | SIGA | Common Stock, par value $.0001 per share | Disposed to Issuer | -9.15% | -5,725 | 56,873 | 10 Jun 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.