Nano Nuclear insider to sell $435K in shares

Nano Nuclear Energy Inc. (NNE) is the issuer for a planned resale of common stock reported by James Walker under Rule 144.

Rhea-AI Filing Summary

Nano Nuclear Energy Inc. (NNE) is the issuer for a planned resale of common stock reported by James Walker under Rule 144. The notice covers 25,000 shares of common stock to be sold through UBS Financial Services Inc., with an aggregate market value of $435,250.00 and reference to 53,698,146 shares outstanding. The securities to be sold are indicated as acquired by exercise of stock options, for cash, with future dates listed for the acquisition and potential sale. The filing also lists a prior sale by James Walker of 123,688 shares of common stock for $3,276,386.60.

Key Figures

Planned shares to be sold: 25,000 shares of common stock Aggregate market value of planned sale: $435,250.00 Shares outstanding: 53,698,146 shares +2 more

5 metrics

Planned shares to be sold 25,000 shares of common stock Shares of Nano Nuclear Energy Inc. covered by the Rule 144 notice

Aggregate market value of planned sale $435,250.00 Value of 25,000 Nano Nuclear Energy Inc. common shares referenced in the notice

Shares outstanding 53,698,146 shares Nano Nuclear Energy Inc. common shares outstanding as stated in the filing

Prior shares sold 123,688 shares Nano Nuclear Energy Inc. common shares sold by James Walker on 06/03/2026

Proceeds from prior sale $3,276,386.60 Total consideration for 123,688 Nano Nuclear Energy Inc. shares sold on 06/03/2026

Key Terms

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

4 terms

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.

Form 144 regulatory

"144: Filer Information and 144: Issuer Information sections."

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.

Exercise of Stock Option financial

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

attorney-in-fact regulatory

"Signature | /s/ UBS Financial Services Inc., 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

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

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

It discloses that James Walker has filed a notice under Rule 144 for a planned sale of 25,000 shares of Nano Nuclear Energy Inc. common stock through UBS Financial Services Inc., along with details of his recent prior sale of 123,688 shares.

How many Nano Nuclear Energy Inc. (NNE) shares are planned to be sold under this Form 144?

The notice covers a planned sale of 25,000 shares of common stock of Nano Nuclear Energy Inc., to be executed through UBS Financial Services Inc. as the broker.

What is the aggregate market value of the NNE shares covered by this Form 144?

The 25,000 shares of Nano Nuclear Energy Inc. common stock covered by the notice have an aggregate market value of $435,250.00, based on the pricing information included with the filing.

How many Nano Nuclear Energy Inc. (NNE) shares are reported as outstanding in this filing?

The filing states that there are 53,698,146 shares of Nano Nuclear Energy Inc. common stock outstanding, providing a reference figure for the issuer’s total common shares.

What prior sales of NNE stock by James Walker are disclosed?

The filing lists a prior transaction for 123,688 shares of Nano Nuclear Energy Inc. common stock sold on 06/03/2026 for total proceeds of $3,276,386.60, categorized under securities sold during the past three months.

How were the NNE shares to be sold under this Form 144 acquired?

The securities to be sold are indicated as acquired through an Exercise of Stock Option from the issuer, with the consideration described as cash and a listed acquisition date of 01/28/2026.

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

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Available on EDGAR 09/01/2026 - 04:09 PM EDT Accepted by SEC EDGAR 09/01/2026 - 04:08 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	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	435250.00	53698146	09/01/2026	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

144: Remarks and Signature

Remarks
Date of Notice	09/01/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/23/2025
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)