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Filing Detail
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001437749-21-007800
Filing Date
2021-03-31
Accepted
2021-03-31 15:03:34
Documents
54
Period of Report
2020-12-31

Document Format Files

Seq Description Document Type Size
1 FORM 10-K blkbx20201231_10k.htm 10-K 703716
2 EXHIBIT 31.1 ex_237852.htm EX-31.1 11996
3 EXHIBIT 31.2 ex_237853.htm EX-31.2 11996
4 EXHIBIT 32.1 ex_237854.htm EX-32.1 4999
5 EXHIBIT 32.2 ex_237855.htm EX-32.2 4999
  Complete submission text file 0001437749-21-007800.txt   3904211

Data Files

Seq Description Document Type Size
6 XBRL INSTANCE DOCUMENT blbx-20201231.xml EX-101.INS 494430
7 XBRL TAXONOMY EXTENSION SCHEMA blbx-20201231.xsd EX-101.SCH 52078
8 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE blbx-20201231_cal.xml EX-101.CAL 42677
9 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE blbx-20201231_def.xml EX-101.DEF 360621
10 XBRL TAXONOMY EXTENSION LABEL LINKBASE blbx-20201231_lab.xml EX-101.LAB 309799
11 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE blbx-20201231_pre.xml EX-101.PRE 382520
Mailing Address 5430 LBJ FREEWAY SUITE 1485 DALLAS TX 75240
Business Address 5430 LBJ FREEWAY SUITE 1485 DALLAS TX 75240 972-726-9203
BLACKBOXSTOCKS INC. (Filer) CIK: 0001567900 (see all company filings)

IRS No.: 453598066 | State of Incorp.: NV | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 000-55108 | Film No.: 21792707
SIC: 7371 Services-Computer Programming Services