Nicolet Bankshares director proposes $609K share sale

The notice also lists 2,662 common shares sold during the prior three months for an aggregate market value of $453,188.09.

Rhea-AI Filing Summary

Nicolet Bankshares Inc. director Robert Bruce Atwell reported a proposed sale of 3,556 common shares, with an aggregate market value of $608,861.88 and an approximate sale date of October 23, 2026. The notice identifies Fidelity Brokerage Services LLC as broker and NYSE as the exchange, and lists a stock option exercise from the issuer dated October 23, 2026, with cash payment. It also reports 2,662 common shares sold during the prior three months for $453,188.09. Gary Redman signed as a duly authorized representative of Fidelity Brokerage Services LLC and as attorney-in-fact for Robert Atwell.

Key Figures

Proposed sale: 3,556 common shares Aggregate market value: $608,861.88 Shares outstanding: 20,957,513 shares +2 more

5 metrics

Proposed sale 3,556 common shares Approximate sale date: October 23, 2026

Aggregate market value $608,861.88 For the proposed sale

Shares outstanding 20,957,513 shares Figure listed in the notice

Shares sold during prior three months 2,662 common shares Prior three-month sales reported in the notice

Aggregate market value of prior sales $453,188.09 For the 2,662 common shares sold during the prior three months

Key Terms

Rule 144, Stock Option Exercise, shares outstanding

3 terms

Rule 144 regulatory

"definition of "person" in paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Stock Option Exercise financial

"Stock Option Exercise"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

shares outstanding financial

"number shares outstanding"

Shares outstanding are the total number of a company’s stock units held by all shareholders, including institutional investors and company insiders — think of them as the total number of slices of the company’s ownership pie. Investors use this number to calculate how much of the company each share represents, and it directly affects per-share measures like earnings per share, ownership percentage and valuation; when the slice count changes, an investor’s claim and the company’s per-share metrics change too.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many NIC shares did Robert Bruce Atwell plan to sell?

Robert Bruce Atwell, a director of Nicolet Bankshares Inc., reported a proposed sale of 3,556 common shares, with an aggregate market value of $608,861.88. The notice gives an approximate sale date of October 23, 2026 and identifies Fidelity Brokerage Services LLC as broker and NYSE as the exchange.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/23/2026 - 12:33 PM EDT Accepted by SEC EDGAR 10/23/2026 - 12:32 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001253903
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	NICOLET BANKSHARES INC
SEC File Number	001-37700
Address of Issuer	111 N WASHINGTON ST GREEN BAY WISCONSIN 54301
Phone	920 430 1400
Name of Person for Whose Account the Securities are To Be Sold	ATWELL ROBERT BRUCE
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	3556	608861.88	20957513	10/23/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	10/23/2026	Stock Option Exercise	Issuer			3556	10/23/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Robert Atwell 111 North Washington Street Green Bay WI 54301	Common	07/24/2026	2662	453188.09

144: Remarks and Signature

Remarks
Date of Notice	10/23/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Robert Atwell
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)