# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001437749-26-010098
Filing Date
2026-03-27
Accepted
2026-03-27 16:15:44
Documents
101
Period of Report
2025-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | FORM 10-K | nsts20251231_10k.htm iXBRL | 10-K | 3331843
2 | EXHIBIT 4.1 | ex_874936.htm | EX-4.1 | 11901
3 | EXHIBIT 21.1 | ex_874938.htm | EX-21.1 | 3800
4 | EXHIBIT 23.1 | ex_874939.htm | EX-23.1 | 2596
5 | EXHIBIT 31.1 | ex_874940.htm | EX-31.1 | 16162
6 | EXHIBIT 31.2 | ex_874941.htm | EX-31.2 | 16137
7 | EXHIBIT 32.1 | ex_874942.htm | EX-32.1 | 8985
| Complete submission text file | 0001437749-26-010098.txt |  | 14277568

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
8 | XBRL TAXONOMY EXTENSION SCHEMA | nsts-20251231.xsd | EX-101.SCH | 73509
9 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE | nsts-20251231_cal.xml | EX-101.CAL | 97867
10 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE | nsts-20251231_def.xml | EX-101.DEF | 582796
11 | XBRL TAXONOMY EXTENSION LABEL LINKBASE | nsts-20251231_lab.xml | EX-101.LAB | 508898
12 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE | nsts-20251231_pre.xml | EX-101.PRE | 636652
105 | EXTRACTED XBRL INSTANCE DOCUMENT | nsts20251231_10k_htm.xml | XML | 3272752

Mailing Address 700 LEWIS AVE. WAUKEGAN IL 60085
Business Address 700 LEWIS AVE. WAUKEGAN IL 60085 847-336-4430
NSTS Bancorp, Inc. (Filer) CIK: 0001881592 (see all company filings)

EIN.: 000000000 | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-41232 | Film No.: 26807572
SIC: 6035 Savings Institution, Federally Chartered
(CF Office: 02 Finance)