Nano Nuclear officer plans $444K stock sale

Officer James Walker has filed a Form 144 to sell 25,000 NNE common shares, following earlier stock sales in the prior three months.

Rhea-AI Filing Summary

Nano Nuclear Energy Inc. (NNE) is the subject of a Form 144 notice filed for the proposed sale of common stock by officer James Walker. The notice covers 25,000 shares of common stock, with an aggregate market value of $444,167.50, to be sold through UBS Financial Services Inc. on NASDAQ.

The shares to be sold are tied to an exercise of stock options on January 28, 2026, to be exercised for cash. The filing also lists prior sales by James Walker in the last three months, including 123,688 shares sold on June 3, 2026 and 25,000 shares sold on September 1, 2026.

Key Figures

Shares proposed to be sold: 25,000 shares Aggregate market value of proposed sale: $444,167.50 Shares outstanding: 53,698,146 shares +2 more

5 metrics

Shares proposed to be sold 25,000 shares Form 144 notice for Nano Nuclear Energy Inc. common stock

Aggregate market value of proposed sale $444,167.50 25,000 NNE common shares listed in the Form 144

Shares outstanding 53,698,146 shares Common stock of Nano Nuclear Energy Inc. reported in the notice

Prior sale on June 3, 2026 123,688 shares for $3,276,386.60 NNE common stock sold by James Walker during the past three months

Prior sale on September 1, 2026 25,000 shares for $436,065.00 NNE common stock sold by James Walker during the past three months

Key Terms

Form 144, Rule 144, Exercise of Stock Option, attorney-in-fact

4 terms

Form 144 regulatory

"144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Rule 144 regulatory

"See the 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.

Exercise of Stock Option financial

"Common | 01/28/2026 | Exercise of Stock Option | Issuer"

attorney-in-fact regulatory

"as attorney-in-fact for James Walker"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

What does the Form 144 filing disclose for Nano Nuclear Energy Inc. (NNE)?

The Form 144 notice discloses that officer James Walker plans to sell 25,000 shares of Nano Nuclear Energy Inc. common stock, with an aggregate market value of $444,167.50, through UBS Financial Services Inc. on NASDAQ.

How many NNE shares are proposed to be sold under this Form 144?

The notice covers a proposed sale of 25,000 shares of Nano Nuclear Energy Inc. common stock. These shares are associated with an exercise of stock options on January 28, 2026 for cash.

What recent stock sales by James Walker in NNE are reported?

The filing reports that James Walker sold 123,688 shares of NNE common stock on June 3, 2026 for $3,276,386.60, and 25,000 shares on September 1, 2026 for $436,065.00.

What is the reported aggregate market value of the NNE shares to be sold?

The Form 144 lists an aggregate market value of $444,167.50 for the 25,000 shares of Nano Nuclear Energy Inc. common stock proposed to be sold through UBS Financial Services Inc.

How many Nano Nuclear Energy Inc. shares are reported as outstanding?

The notice reports 53,698,146 shares of Nano Nuclear Energy Inc. common stock as outstanding. This figure provides context for the company’s total share base at the time of the filing.

Who is executing the proposed NNE share sale on behalf of James Walker?

The proposed sale of 25,000 NNE common shares is to be executed through UBS Financial Services Inc., which signed the Form 144 as attorney-in-fact for James Walker.

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

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Available on EDGAR 09/03/2026 - 04:15 PM Accepted by SEC EDGAR 09/03/2026 - 04:08 PM 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	0002021757
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	Nano Nuclear Energy Inc.
SEC File Number	001-42044
Address of Issuer	10 TIMES SQUARE 30TH FLOOR NEW YORK NEW YORK 10018
Phone	6046875792
Name of Person for Whose Account the Securities are To Be Sold	Walker James John
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	Officer

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	UBS Financial Services Inc. 11 Madison Avenue 4th Floor New York NY 10010	25000	444167.50	53698146	09/03/2026	NASDAQ

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	01/28/2026	Exercise of Stock Option	Issuer			25000	01/28/2026	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
James Walker 10 Times Square 30th Floor New York NY 10018	Common	06/03/2026	123688	3276386.60
James Walker 10 Times Square 30th Floor New York NY 10018	Common	09/01/2026	25000	436065.00

144: Remarks and Signature

Remarks
Date of Notice	09/03/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/27/2026
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/ UBS Financial Services Inc., as attorney-in-fact for James Walker
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)