$SIGA

$3.20 +$0.05 (1.43%) Close

$SIGA Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 71.8M shares outstanding

Who owns SIGA?

By type of holder

Institutions 48.4% Insiders 0.0% Everyone else 51.6%

Concentration Top 10 holders own 26.5%

BlackRock, Inc. 5.8% · Dimensional Fund Advisors LP 3.8%

Institutional ownership

48.4%

+0.6 pts vs last qtr

Institutional holders

160

-23 vs last qtr

Net shares bought

+409.9K

by institutions in Q2 2026

New / sold out

16 / 39

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

BlackRock, Inc. +692.1K
First Wilshire Securities Management Inc +449.4K

Biggest sellers in Q2 2026

HRT Financial LP SOLD OUT −360.1K
Macquarie Group LTD SOLD OUT −244.9K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for SIGA Technologies Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+25.7%

+2.57% a year

Each share's claim on the business

−20.4%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$78.7M vs $20M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years56% 3–5 years15% 1–3 years22% Under 1 year7%

Quarterly turnover

10.8%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting SIGA on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	4.2M	5.83%	+692.1K (+19.8%)	≤2021	0.0%
Shares held by quarter Peak holding4.2M (Q2'26) Change over 8 quarters+169.1K Share of the company5.830% BlackRock, Inc.'s full portfolio →
DF Dimensional Fund Advisors LP	2.7M	3.79%	+16.8K (+0.6%)	≤2021	0.0%
Shares held by quarter Peak holding2.7M (Q2'26) Change over 8 quarters+811.4K Share of the company3.790% Dimensional Fund Advisors LP's full portfolio →

BlackRock, Inc.

4.2M

% of company

5.83%

Change vs last qtr

+692.1K (+19.8%)

Held since

≤2021

Dimensional Fund Advisors LP

2.7M

% of company

3.79%

Change vs last qtr

+16.8K (+0.6%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding SIGA Technologies Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting SIGA on Form N-PORT; together they hold 19.2% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
AU Avantis U.S. Small Cap Value ETF American Century ETF Trust	$5.87M	1.3M	1.75%	0.02%	May 31, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$4.39M	1.2M	1.68%	0.00%	June 30, 2026

Avantis U.S. Small Cap Value ETF

American Century ETF Trust

Position value

$5.87M

% of company

1.75%

% of the fund

0.02%

As of

May 31, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$4.39M

% of company

1.68%

% of the fund

0.00%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding SIGA Technologies Inc and how much of the fund the position is.

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