<SEC-DOCUMENT>0001683168-21-000910-index.html : 20210312
<SEC-HEADER>0001683168-21-000910.hdr.sgml : 20210312
<ACCEPTANCE-DATETIME>20210312122405
ACCESSION NUMBER:		0001683168-21-000910
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210205
FILED AS OF DATE:		20210312
DATE AS OF CHANGE:		20210312

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MCCALLUM KATRINKA
		CENTRAL INDEX KEY:			0001201242
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39608
		FILM NUMBER:		21736285

	BUSINESS ADDRESS:	
		STREET 1:		139 TOWNSEND ST
		STREET 2:		MEZZANINE FLOOR
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94107
		BUSINESS PHONE:		4155389090

	MAIL ADDRESS:	
		STREET 1:		139 TOWNSEND ST
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94107

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTRUSION INC
		CENTRAL INDEX KEY:			0000736012
		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER COMMUNICATIONS EQUIPMENT [3576]
		IRS NUMBER:				751911917
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		101 EAST PARK BLVD, SUITE 1300
		CITY:			PLANO
		STATE:			TX
		ZIP:			75074
		BUSINESS PHONE:		9722346400

	MAIL ADDRESS:	
		STREET 1:		101 EAST PARK BLVD, SUITE 1300
		CITY:			PLANO
		STATE:			TX
		ZIP:			75074

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTRUSION COM INC
		DATE OF NAME CHANGE:	20000601

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ODS NETWORKS INC
		DATE OF NAME CHANGE:	19970507

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	OPTICAL DATA SYSTEMS INC
		DATE OF NAME CHANGE:	19950517
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>ownership.xml
<TEXT>
Document 1 - file: ownership.html

Document 1 - RAW XML: ownership.xml

</DOCUMENT>
</SEC-DOCUMENT>