Insider Update: John Pucin Holds 1,000 NSTS Shares per Form 3

Rhea-AI Filing Summary

Key facts: Director John S. Pucin filed a Form 3 with the SEC on 06/18/2025 disclosing his initial beneficial ownership in NSTS Bancorp, Inc. (ticker NSTS).

The filing shows direct ownership of 1,000 common shares; no derivative securities, options, or indirect holdings were reported. The document is purely administrative, establishing Mr. Pucin’s insider status under Section 16(a). It contains no financial results, strategic announcements, or share-purchase transactions.

Given the small share count and absence of other material information, the filing is unlikely to influence the company’s valuation or near-term outlook.

Insights

Securities Analyst

TL;DR: Routine Form 3; director discloses 1,000 shares—administrative, immaterial, neutral impact.

The Form 3 simply registers John S. Pucin as an insider with a modest direct stake of 1,000 NSTS shares. There are no derivative positions, option grants, or indications of recent purchases or sales. For investors, this disclosure neither strengthens nor weakens the investment thesis: the stake is too small to signify strong alignment, and no strategic information accompanies the filing. Consequently, I classify the news as not impactful and rate it neutral (0).

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Pucin John S.

(Last) (First) (Middle)

700 S LEWIS AVE

C/O NSTS BANCORP, INC.

(Street)

WAUKEGAN IL 60085

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
06/18/2025

3. Issuer Name and Ticker or Trading Symbol
NSTS Bancorp, Inc. [ NSTS ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	1,000	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Carissa H. Schoolcraft Attorney-In-Fact	06/25/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did NSTS Bancorp (NSTS) report in the Form 3 filing?

Director John S. Pucin disclosed direct ownership of 1,000 common shares in NSTS Bancorp.

When was the event date triggering the Form 3 for NSTS?

The event date was 06/18/2025, as stated in the filing.

Does the Form 3 indicate any recent purchase or sale of NSTS shares?

No. The filing only registers initial ownership; it lists no transactions or derivative securities.

Is the disclosed 1,000-share stake considered material for NSTS investors?

The stake is not material; it represents a very small portion of NSTS’s outstanding shares.

Are there any options or warrants listed in the Form 3?

No. No derivative securities were reported.