# EDGAR Filing Document

**Accession Number:** 0001881592
**File Stem:** 0001437749-26-012692
**Filing Date:** 2026-4
**Character Count:** 1940
**Document Hash:** 23b2bb65677dd2ce80314cf41b213159
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001437749-26-012692.hdr.sgml**: 20260417

**ACCESSION NUMBER**: 0001437749-26-012692

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260417

**DATE AS OF CHANGE**: 20260417

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NSTS Bancorp, Inc.
- **CENTRAL INDEX KEY:** 0001881592
- **STANDARD INDUSTRIAL CLASSIFICATION:** SAVINGS INSTITUTION, FEDERALLY CHARTERED [6035]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 000000000
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41232
- **FILM NUMBER:** 26871864

**BUSINESS ADDRESS:**
- **STREET 1:** 700 LEWIS AVE.
- **CITY:** WAUKEGAN
- **STATE:** IL
- **ZIP:** 60085
- **BUSINESS PHONE:** 847-336-4430

**MAIL ADDRESS:**
- **STREET 1:** 700 LEWIS AVE.
- **CITY:** WAUKEGAN
- **STATE:** IL
- **ZIP:** 60085

**UNITED STATES**<br> **SECURITIES AND EXCHANGE COMMISSION**<br> **Washington, D.C. 20549**

**SCHEDULE 14A INFORMATION**

**Proxy Statement Pursuant to Section 14(a) of the**<br> **Securities Exchange Act of 1934**<br> **(Amendment No.)**

Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐ Preliminary Proxy Statement

**☐** **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))**

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material Pursuant to §240.14a-12

**NSTS Bancorp, Inc.**<br> **(Name of Registrant as Specified In Its Charter)**

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

☒ No fee required.

☐ Fee paid previously with preliminary materials.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

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