SIGA TECHNOLOGIES INC - Common Stock (SIGA) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock
Symbol
SIGA on Nasdaq
Shares outstanding
72,059,532
Price per share
$6.11
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
33,956,442
Total reported value
$310,651,969
% of total 13F portfolios
0%
Share change
-472,471
Value change
-$1,869,086
Number of holders
193
Price from insider filings
$6.11
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of SIGA TECHNOLOGIES INC - Common Stock (SIGA) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BlackRock, Inc. 4.7% $20,625,600 3,386,798 BlackRock, Inc. 31 Mar 2025

As of 30 Sep 2025, 193 institutional investors reported holding 33,956,442 shares of SIGA TECHNOLOGIES INC - Common Stock (SIGA). This represents 47% of the company’s total 72,059,532 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of SIGA TECHNOLOGIES INC - Common Stock (SIGA) together control 35% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 4.9% 3,526,009 -2.8% 0% $32,262,984
VANGUARD GROUP INC 3.7% 2,655,942 +5.7% 0% $24,301,870
DIMENSIONAL FUND ADVISORS LP 3.4% 2,432,380 +1% 0% $22,254,626
AltraVue Capital, LLC 3.4% 2,417,514 -3.3% 1.8% $22,120,253
AMERICAN CENTURY COMPANIES INC 1.7% 1,232,732 -12% 0.01% $11,279,503
CITADEL ADVISORS LLC 1.6% 1,125,163 -19% 0.01% $10,295,242
STATE STREET CORP 1.4% 1,033,854 -6.9% 0% $9,459,764
GEODE CAPITAL MANAGEMENT, LLC 1.4% 998,222 +0.03% 0% $9,135,064
JUPITER ASSET MANAGEMENT LTD 1.4% 990,648 0% 0.08% $9,064,429
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 1.2% 834,683 +44% 0% $7,637,349
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 1.1% 827,587 -60% 0.02% $7,572,421
FIRST WILSHIRE SECURITIES MANAGEMENT INC 0.95% 687,897 -1.3% 1.7% $6,294,258
ROYCE & ASSOCIATES LP 0.94% 680,222 +5.9% 0.06% $6,224,031
MORGAN STANLEY 0.91% 656,962 +26% 0% $6,011,209
CSM Advisors, LLC 0.83% 596,512 +67% 0.15% $5,458,000
NEW YORK STATE COMMON RETIREMENT FUND 0.79% 570,561 -3.8% 0.01% $5,220,633
GOLDMAN SACHS GROUP INC 0.74% 532,140 +2% 0% $4,869,081
BANK OF AMERICA CORP /DE/ 0.72% 518,771 +28% 0% $4,746,755
Legato Capital Management LLC 0.71% 512,039 -4.6% 0.51% $4,685,157
D. E. Shaw & Co., Inc. 0.69% 499,753 +15% 0% $4,572,740
JACOBS LEVY EQUITY MANAGEMENT, INC 0.64% 463,705 +5.7% 0.02% $4,242,901
LSV ASSET MANAGEMENT 0.58% 418,330 +9.8% 0.01% $3,828,000
Uniplan Investment Counsel, Inc. 0.55% 396,519 -14% 0.36% $3,628,150
NORTHERN TRUST CORP 0.55% 392,880 -2.6% 0% $3,594,852
DENALI ADVISORS LLC 0.5% 360,300 -7.9% 0.37% $3,296,745

Institutional Holders of SIGA TECHNOLOGIES INC - Common Stock (SIGA) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 263,646 $1,646,979 +$502,251 $6.11 13
2025 Q3 33,956,442 $310,651,969 -$1,869,086 $9.15 193
2025 Q2 34,444,240 $224,591,401 -$1,096,611 $6.52 174
2025 Q1 35,087,868 $192,291,876 +$2,372,079 $5.48 162
2024 Q4 34,603,029 $207,972,461 -$7,741,997 $6.01 167
2024 Q3 35,648,653 $240,649,515 +$11,157,842 $6.75 168
2024 Q2 33,803,270 $256,572,834 +$1,760,002 $7.59 153
2024 Q1 33,558,858 $287,953,335 -$5,489,670 $8.56 142
2023 Q4 19,639 $109,978 +$3,892 $5.60 1
2023 Q3 34,427,962 $180,735,285 +$7,164,205 $5.25 125
2023 Q2 33,176,389 $168,048,852 +$7,622,773 $5.05 128
2023 Q1 31,668,588 $181,996,005 +$1,109,444 $5.75 138
2022 Q4 30,955,137 $227,806,098 +$14,551,339 $7.36 152
2022 Q3 28,085,315 $289,241,114 +$20,352,617 $10.30 141
2022 Q2 26,086,522 $301,705,294 +$63,036,444 $11.58 134
2022 Q1 21,180,569 $150,154,781 -$6,643,847 $7.09 100
2021 Q4 22,101,124 $166,117,226 +$155,253 $7.52 107
2021 Q3 21,555,590 $159,152,980 +$8,870,576 $7.39 97
2021 Q2 20,296,498 $127,464,437 -$6,527,868 $6.28 99
2021 Q1 21,476,773 $139,595,061 -$3,533,528 $6.50 104
2020 Q4 19,475,222 $141,586,804 -$6,328,424 $7.27 91
2020 Q3 22,968,036 $157,792,646 -$1,835,804 $6.87 101
2020 Q2 23,143,935 $136,780,120 +$2,205,050 $5.91 85
2020 Q1 20,108,976 $96,117,230 +$380,303 $4.78 87
2019 Q4 22,792,968 $108,721,564 +$2,661,143 $4.77 94
2019 Q3 22,109,537 $113,418,877 +$5,388,658 $5.12 93
2019 Q2 21,035,763 $119,471,436 +$9,976,396 $5.68 88
2019 Q1 19,549,598 $117,490,286 +$607,740 $6.01 99
2018 Q4 19,226,232 $151,884,457 +$12,833,385 $7.90 86
2018 Q3 16,468,586 $113,468,868 +$2,998,636 $6.89 71
2018 Q2 15,868,145 $94,263,080 +$17,124,959 $5.94 56
2018 Q1 12,967,705 $79,485,642 +$46,417,460 $6.13 33
2017 Q4 5,251,130 $25,468,000 -$78,001 $4.85 3
2017 Q3 5,276,545 $16,726,000 -$967,738 $3.17 4
2017 Q2 5,581,801 $16,968,000 +$1,521,974 $3.04 3
2017 Q1 5,081,140 $15,955,000 +$71,048 $3.15 2
2016 Q4 5,058,526 $14,569,000 +$296,569 $2.90 2
2016 Q3 4,955,721 $14,818,000 $0 $2.99 1
2016 Q2 4,955,721 $7,136,000 $0 $1.44 1
2016 Q1 4,955,721 $2,627,000 -$23,918 $0.53 1
2015 Q4 5,020,527 $2,108,000 +$69,124 $0.42 2
2015 Q3 5,227,473 $6,168,000 -$159,807 $1.18 3
2015 Q2 5,476,548 $7,065,000 -$420,499 $1.29 4
2015 Q1 5,693,489 $11,044,500 -$11,949,352 $1.94 11
2014 Q4 14,122,177 $20,331,200 -$198,298 $1.44 40
2014 Q3 14,297,181 $20,655,350 -$4,886,286 $1.44 48
2014 Q2 15,123,795 $42,649,705 -$4,290,154 $2.82 63
2014 Q1 16,509,428 $51,152,648 +$2,522,676 $3.10 70