Security Snapshot

SIGA TECHNOLOGIES INC - Common Stock (SIGA) Institutional Ownership

CUSIP: 826917106

13F Institutional Holders and Ownership History from Q1 2014 to Q3 2026

13F reference period

Q2 2026

Institutions Reporting

161

Shares (Excl. Options)

34.85MFull value: 34,852,752 · shares · 30 Jun 2026

Price

$3.64

The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.

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Security type / class
Equity / Common Stock
Symbol
SIGA on Nasdaq
All holders as of 30 Jun 2026
Q2 2026
Total 13F shares
34,852,752
Latest holder snapshot 5 signals
Total 13F value
$126,982,461
Portfolio coverage rank
0%
Share change
+703,632
Value change
-$126,964
Number of holders
161
Issuer context Names, identifiers, and filing context for this profile. 3 identity fields
Shares outstanding
72,059,532
SEC-reported price per share
$3.40
Insider filing price
$3.40
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source

Key facts

  • SIGA - SIGA TECHNOLOGIES INC - Common Stock is tracked under CUSIP 826917106.
  • 161 institutions reported positions in Q2 2026.
  • 1 significant owner is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 182 to 161 between Q1 2026 and Q2 2026.
  • SEC-reported value moved from
    $184.02MFull value: $184,017,387 · USD · 31 Mar 2026
    to
    $126.98MFull value: $126,982,461 · USD · 30 Jun 2026
    .

Research use

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Form 13F

Latest holder context comes from 161 institutions filings for Q2 2026.

Open SEC evidence

Security key

826917106

13F reference period

Q2 2026

13F holders

161

13D/G owners

1

CIK / CUSIP context first

Open Q2 2026 holders SIGA full holder history SIGA TECHNOLOGIES INC SEC filings SIGA TECHNOLOGIES INC company facts SIGA TECHNOLOGIES INC insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
1
Security
SIGA
Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BlackRock, Inc. 4.7% $21,946,451 3,386,798 BlackRock, Inc. 31 Mar 2025
As of 30 Jun 2026, 161 institutional investors reported holding
34.85MFull value: 34,852,752 · shares · 30 Jun 2026
shares of SIGA TECHNOLOGIES INC - Common Stock (SIGA). This represents 48% of the company’s total
72.06MFull value: 72,059,532 · shares · Stored outstanding share count
outstanding shares.

13F concentration

Top 25 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
38%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 5.8% 4,186,282 +20% 0% $15,238,067
DIMENSIONAL FUND ADVISORS LP 3.8% 2,719,568 +0.62% 0% $9,899,037
AltraVue Capital, LLC 3.2% 2,327,144 -4.3% 0.61% $8,470,804
VANGUARD CAPITAL MANAGEMENT LLC 2.4% 1,712,701 -0.1% 0% $6,234,232
AMERICAN CENTURY COMPANIES INC 2.1% 1,506,065 +14% 0% $5,482,077
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 2% 1,474,817 -3.4% 0% $5,368,334
GEODE CAPITAL MANAGEMENT, LLC 2% 1,417,092 +7.7% 0% $5,159,233
FIRST WILSHIRE SECURITIES MANAGEMENT INC 1.9% 1,339,883 +50% 1% $4,877,174
AQR CAPITAL MANAGEMENT LLC 1.7% 1,245,992 +2.2% 0% $4,535,410
STATE STREET CORP 1.6% 1,133,989 +12% 0% $4,127,720
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 1.3% 914,047 +11% 0.01% $3,327,131
Qube Research & Technologies Ltd 1% 740,910 +78% 0% $2,696,912
NEW YORK STATE COMMON RETIREMENT FUND 0.82% 590,761 0% 0% $2,150,370
MILLENNIUM MANAGEMENT LLC 0.8% 579,599 +24% 0% $2,109,740
JACOBS LEVY EQUITY MANAGEMENT, INC 0.79% 566,863 +94% 0.01% $2,063,381
Uniplan Investment Counsel, Inc. 0.78% 560,353 +51% 0.19% $2,039,686
CITADEL ADVISORS LLC 0.76% 551,246 -22% 0% $2,006,535
ROYCE & ASSOCIATES LP 0.76% 551,010 -17% 0.02% $2,005,676
VANGUARD PORTFOLIO MANAGEMENT LLC 0.76% 549,697 -6.4% 0% $2,000,897
Legato Capital Management LLC 0.71% 512,039 0% 0.15% $1,863,822
LSV ASSET MANAGEMENT 0.64% 461,307 -14% 0% $1,679,000
BANK OF AMERICA CORP /DE/ 0.59% 427,275 -12% 0% $1,555,282
RENAISSANCE TECHNOLOGIES LLC 0.59% 425,800 -10% 0% $1,549,912
MORGAN STANLEY 0.58% 421,009 +60% 0% $1,532,474
DENALI ADVISORS LLC 0.58% 414,436 -5.1% 0.15% $1,508,547

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
51
Headline period
Q2 2026
Rows shown
1-25 of 51
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q3 417,685 $1,411,861 -$172,747 $3.40 21
2026 Q2 34,852,752 $126,982,461 -$126,964 $3.64 161
2026 Q1 34,389,412 $184,017,387 -$8,413,624 $5.35 182
2025 Q4 35,823,449 $219,044,735 +$8,977,270 $6.11 198
2025 Q3 33,989,722 $310,956,481 -$1,812,025 $9.15 195
2025 Q2 34,444,240 $224,591,401 -$1,096,617 $6.52 174
2025 Q1 35,087,868 $192,291,994 +$2,372,072 $5.48 162
2024 Q4 34,604,179 $207,977,102 -$7,735,828 $6.01 167
2024 Q3 35,648,653 $240,649,643 +$11,172,706 $6.75 166
2024 Q2 33,801,068 $256,556,116 +$1,743,400 $7.59 148
2024 Q1 33,560,967 $287,971,679 -$4,112,729 $8.56 142
2023 Q4 34,088,521 $190,916,402 -$1,744,917 $5.60 126
2023 Q3 34,427,962 $180,734,949 +$7,164,161 $5.25 125
2023 Q2 33,176,389 $168,048,981 +$7,622,712 $5.05 128
2023 Q1 31,668,588 $181,996,242 +$1,094,029 $5.75 138
2022 Q4 30,987,262 $228,042,074 +$12,857,472 $7.36 154
2022 Q3 28,838,842 $297,002,956 +$26,345,105 $10.30 145
2022 Q2 26,094,528 $302,165,925 +$63,278,735 $11.58 136
2022 Q1 21,227,816 $150,489,781 -$6,877,910 $7.09 103
2021 Q4 22,181,370 $166,721,226 +$537,549 $7.52 109
2021 Q3 21,615,478 $159,595,980 +$9,341,424 $7.39 99
2021 Q2 20,413,368 $128,198,437 -$7,207,931 $6.28 98
2021 Q1 21,509,782 $139,810,061 -$3,577,344 $6.50 103
2020 Q4 22,120,239 $160,815,804 -$6,110,599 $7.27 94
2020 Q3 22,995,462 $157,981,646 -$1,884,769 $6.87 103
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