John S. Pucin - 01 Oct 2026 Form 4 Insider Report for NSTS Bancorp, Inc. (NSTS)

Reporting relationship: Director
Issuer ticker: NSTS
Reported as of: 01 Oct 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 02 Oct 2026, 14:56:26 UTC
Prior SEC filing: 25 Jun 2025
Source filing: View source filing
Reporting owner signature: /s/ Carissa H. Schoolcraft, POA

Key filing fact

John S. Pucin filed Form 4 for NSTS Bancorp, Inc. (NSTS) on 02 Oct 2026.

Key facts

This page summarizes John S. Pucin's Form 4 filing for NSTS Bancorp, Inc. (NSTS).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 02 Oct 2026, 14:56.

Change

Previous filing in this sequence was filed on 25 Jun 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002074403 Primary reporting owner

Pucin John S.

Relationship: Director
Address: 700 S LEWIS AVE, C/O NSTS BANCORP, INC., WAUKEGAN
Signature: /s/ Carissa H. Schoolcraft, POA
Signature date: 02 Oct 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

NSTS transaction

Common Stock

Disposition pursuant to a tender of shares in a change of control transaction

Transaction value
Shares: -1,000
Change %: -100%
Price: $14.31^*
Shares after: 0
Date: 01 Oct 2026
Ownership: Direct
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

John S. Pucin is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 1 footnote

Footnote F1

Pursuant to the Agreement and Plan of Merger dated 05/12/2026, each outstanding share of common stock was converted into the right to receive $14.31 in cash at the effective time of the merger.