NSTS Bancorp, Inc.

The Board of Directors is sending you this Proxy Statement for the purpose of requesting that you allow your shares of Common Stock to be represented at the Annual Meeting by the persons named in the enclosed proxy card. As shown on your proxy card, you may also vote your shares by Internet voting. All shares of Common Stock represented at the Annual Meeting by properly submitted and dated proxies will be voted according to the instructions indicated on the proxy. If you execute a proxy (by any permitted method) without giving voting instructions, your shares will be voted as recommended by the Company’s Board of Directors.

The Board of Directors recommends a vote“FOR”** its nominees for directors and**“FOR”** the ratification of the appointment of Plante & Moran, PLLC as our independent registered public accounting firm.**

The Company does not know of any other matters to be presented at the Annual Meeting. If any matters not described in this Proxy Statement are properly presented at the Annual Meeting, the persons named in the proxy will vote your shares as determined by a majority of the Board of Directors. If the Annual Meeting is postponed or adjourned, your shares of Common Stock may be voted by the persons named in the proxy card on the new Annual Meeting date as well, unless you have revoked your proxy. You may revoke your proxy at any time before the vote is taken at the Annual Meeting. To revoke your proxy you must advise the Company’s Corporate Secretary in writing before your Common Stock has been voted at the Annual Meeting, deliver a later-dated proxy (executed in writing or via the Internet), or attend the Annual Meeting and vote your shares in person. Attendance at the Annual Meeting will not in itself revoke your proxy.

If you hold your Common Stock in “street name,” you will receive instructions from your broker, bank or other nominee that you must follow in order to have your shares voted. Your broker, bank or other nominee may allow you to deliver your voting instructions via the Internet.

Please see the instruction form provided by your broker, bank or other nominee that accompanies this Proxy Statement. In order to vote in person at the Annual Meeting, you will need special documentation from your broker, bank or other nominee.Please note that pursuant to the rules that guide how brokers vote your shares of Common Stock, your brokerage firm or other nominee may not vote your shares with respect to the election of directors (Proposal I) without specific instructions from you as to how to vote because this matter is not considered a“routine”** matter under the applicable rules. Proposal II, the ratification of the appointment of Plante & Moran, PLLC, is a matter we believe will be considered**“routine”; accordingly, even if the broker or other nominee does not receive voting instructions from you, the broker or other nominee is entitled to vote your shares in connection with Proposal II.