Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000897101-21-000260
Filing Date
2021-03-31
Accepted
2021-03-31 15:19:26
Documents
101
Period of Report
2020-12-31

Document Format Files

Seq Description Document Type Size
1 10-K DATED DECEMBER 31, 2020 csi210485_10k.htm 10-K 913147
2 DESCRIPTION OF REGISTRANTS SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE S csi210485_ex4-1.htm EX-4.1 23378
3 EMPLOYMENT AGREEMENT WITH ANITA KUMAR csi210485_ex10-12.htm EX-10.12 104822
4 SUBSIDIARIES OF THE REGISTRANT csi210485_ex21.htm EX-21 4578
5 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM csi210485_ex23-1.htm EX-23.1 2135
6 CERTIFICATION OF CHIEF EXECUTIVE OFFICER csi210485_ex31-1.htm EX-31.1 8756
7 CERTIFICATION OF CHIEF FINANCIAL OFFICER csi210485_ex31-2.htm EX-31.2 8823
8 CERTIFICATION UNDER USC SECTION 1350 csi210485_ex32.htm EX-32 3679
9 PRESS RELEASE DATED MARCH 30, 2020 ANNOUNCING 2020 FOURTH QUARTER AND YEAR END F csi210485_ex99-1.htm EX-99.1 71844
16 GRAPHIC a210485001.jpg GRAPHIC 6480
  Complete submission text file 0000897101-21-000260.txt   11900831

Data Files

Seq Description Document Type Size
10 XBRL INSTANCE FILE jcs-20201231.xml EX-101.INS 3681476
11 XBRL SCHEMA FILE jcs-20201231.xsd EX-101.SCH 67157
12 XBRL CALCULATION FILE jcs-20201231_cal.xml EX-101.CAL 111667
13 XBRL DEFINITION FILE jcs-20201231_def.xml EX-101.DEF 271962
14 XBRL LABEL FILE jcs-20201231_lab.xml EX-101.LAB 632118
15 XBRL PRESENTATION FILE jcs-20201231_pre.xml EX-101.PRE 538240
Mailing Address 10900 RED CIRCLE DRIVE MINNETONKA MN 55343
Business Address 10900 RED CIRCLE DRIVE MINNETONKA MN 55343 9529961674
COMMUNICATIONS SYSTEMS INC (Filer) CIK: 0000022701 (see all company filings)

EIN.: 410957999 | State of Incorp.: MN | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-31588 | Film No.: 21792792
SIC: 3661 Telephone & Telegraph Apparatus