INTRUSION INC - Common Stock, par value $0.01 per share (INTZ)

CUSIP: 46121E304

Q1 2026 13F Holders as of 31 Mar 2026

Security type / class
Equity / Common Stock, par value $0.01 per share
Total 13F shares
1,585,617
Total 13F value
$1,301,755
Holder snapshot 6 signals
Share change
-30,145
SEC-reported price per share
$0.82
Number of holders
28
Value change
-$57,633
Number of buys
10
Number of sells
12
Security identity Names, identifiers, and filing context for this profile. 1 source field
Shares outstanding
22,818,596

Security key

46121E304

Report period

Q1 2026

Institutions

28

Top holders

10

INTZ full security history Ownership snapshot Full 13F holder table Previous quarter: Q4 2025 INTRUSION INC SEC filings INTRUSION INC company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of INTZ - INTRUSION INC - Common Stock, par value $0.01 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
Streeterville Capital LLC
Disclosed value leader
Streeterville Capital LLC
Comparable rows
15/15
Latest evidence
22 Jan 2026
13D/G 3/4/5 13F Lead comparable stake: 9.8% 13D/G row: Streeterville Capital LLC Showing 1-6 of 15 holder rows.

Quick read

Streeterville Capital LLC leads the comparable SEC ownership view at 9.8%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Streeterville Capital LLC's linked filing trail.
Comparable ownership Top 5
Streeterville Capital LLC 9.8%
MCCALLUM KATRINKA 0.43%
Gregory K. Wilson 0.42%
Dion Hinchcliffe 0.4%
Head T. Joe 0.32%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Streeterville Capital LLC
13D/G
Streeterville Management LLC
13D/G
9.8%
$10,625,000
8,500,000 shares
 $0 27 Dec 2024
MCCALLUM KATRINKA
3/4/5
Director
3/4/5
0.43%
$170,173
98,366 shares
 — 19 Aug 2025
Gregory K. Wilson
3/4/5
Director
3/4/5
0.42%
$167,560
96,856 shares
 — 19 Aug 2025
Dion Hinchcliffe
3/4/5
Director
3/4/5
0.4%
$157,751
91,186 shares
 — 19 Aug 2025
Head T. Joe
3/4/5
Chief Technology Officer
3/4/5
0.32%
$94,322
72,556 shares
 — 22 Jan 2026
Potomac Capital Management, Inc.
13F
Company
13F
2.1%
$544,008
473,050 shares
 — 31 Dec 2025
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
28
Shares
1,585,617
Rows available
28
Investor Option Weight % Change % SEC-reported value * Price Shares Share Change Activity Report Period

* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2026 vs Q4 2025 Across Filers

Q4 2025 holders
26
Q1 2026 holders
28
Holder diff
2
Investor Q4 2025 Shares Q1 2026 Shares Share Diff Share Chg % Q4 2025 value Q1 2026 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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