Jiang Yu - 03 Jun 2026 Form 4 Insider Report for Nano Nuclear Energy Inc. (NNE)

Reporting relationship: President and Chairman, Director, 10%+ Owner
Issuer ticker: NNE
Reported as of: 03 Jun 2026
Net transaction value: -$19,896,985
SEC form: 4
Accepted by SEC: 05 Jun 2026, 17:32:29 UTC
Prior SEC filing: 30 Jan 2026
Source filing: View source filing
Reporting owner signature: /s/ Jiang Yu

Key filing fact

Jiang Yu filed Form 4 for Nano Nuclear Energy Inc. (NNE) on 05 Jun 2026.

Key facts

This page summarizes Jiang Yu's Form 4 filing for Nano Nuclear Energy Inc. (NNE).
19 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 05 Jun 2026, 17:32.

Change

Previous filing in this sequence was filed on 30 Jan 2026.
Current net transaction value: -$19,896,985.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001999118 Primary reporting owner

Yu Jiang

Relationship: President and Chairman, Director, 10%+ Owner
Address: 10 TIMES SQUARE, 30TH FLOOR, NEW YORK
Signature: /s/ Jiang Yu
Signature date: 05 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

NNE transaction

Common Stock

Sale

Transaction value: $8,219,738
Shares: -312,553
Change %: -3.6%
Price: $26.30
Shares after: 8,411,447
Date: 03 Jun 2026
Ownership: By I Financial Ventures Group LLC
Footnotes: F1, F2, F4

NNE transaction

Common Stock

Sale

Transaction value: $4,580,169
Shares: -168,626
Change %: -2%
Price: $27.16
Shares after: 8,242,821
Date: 03 Jun 2026
Ownership: By I Financial Ventures Group LLC
Footnotes: F1, F2, F5

NNE transaction

Common Stock

Sale

Transaction value: $279,301
Shares: -10,035
Change %: -0.12%
Price: $27.83
Shares after: 8,232,786
Date: 03 Jun 2026
Ownership: By I Financial Ventures Group LLC
Footnotes: F1, F2, F6

NNE transaction

Common Stock

Sale

Transaction value: $103,478
Shares: -3,571
Change %: -0.04%
Price: $28.98
Shares after: 8,229,215
Date: 03 Jun 2026
Ownership: By I Financial Ventures Group LLC
Footnotes: F1, F2, F7

NNE transaction

Common Stock

Sale

Transaction value: $155,981
Shares: -5,215
Change %: -0.06%
Price: $29.91
Shares after: 8,224,000
Date: 03 Jun 2026
Ownership: By I Financial Ventures Group LLC
Footnotes: F1, F2, F8

NNE transaction

Common Stock

Options Exercise

Transaction value
Shares: +200,000
Change %: +2.4%
Price: $3.00^*
Shares after: 8,424,000
Date: 03 Jun 2026
Ownership: By I Financial Ventures Group LLC
Footnotes: F2

NNE transaction

Common Stock

Sale

Transaction value: $3,287,890
Shares: -125,021
Change %: -1.5%
Price: $26.30
Shares after: 8,298,979
Date: 03 Jun 2026
Ownership: By I Financial Ventures Group LLC
Footnotes: F1, F2, F9

NNE transaction

Common Stock

Sale

Transaction value: $1,832,084
Shares: -67,451
Change %: -0.81%
Price: $27.16
Shares after: 8,231,528
Date: 03 Jun 2026
Ownership: By I Financial Ventures Group LLC
Footnotes: F1, F2, F10

NNE transaction

Common Stock

Sale

Transaction value: $111,720
Shares: -4,014
Change %: -0.05%
Price: $27.83
Shares after: 8,227,514
Date: 03 Jun 2026
Ownership: By I Financial Ventures Group LLC
Footnotes: F1, F2, F11

NNE transaction

Common Stock

Sale

Transaction value: $41,408
Shares: -1,429
Change %: -0.02%
Price: $28.98
Shares after: 8,226,085
Date: 03 Jun 2026
Ownership: By I Financial Ventures Group LLC
Footnotes: F1, F2, F12

NNE transaction

Common Stock

Sale

Transaction value: $62,362
Shares: -2,085
Change %: -0.03%
Price: $29.91
Shares after: 8,224,000
Date: 03 Jun 2026
Ownership: By I Financial Ventures Group LLC
Footnotes: F1, F2, F13

NNE transaction

Common Stock

Options Exercise

Transaction value
Shares: +45,900
Change %: +0.56%
Price: $0.000000^*
Shares after: 8,269,900
Date: 03 Jun 2026
Ownership: Direct
Footnotes: F3

NNE transaction

Common Stock

Sale

Transaction value: $795,272
Shares: -30,250
Change %: -0.37%
Price: $26.29
Shares after: 8,239,650
Date: 03 Jun 2026
Ownership: Direct
Footnotes: F1, F14

NNE transaction

Common Stock

Sale

Transaction value: $353,237
Shares: -13,050
Change %: -0.16%
Price: $27.07
Shares after: 8,226,600
Date: 03 Jun 2026
Ownership: Direct
Footnotes: F1, F15

NNE transaction

Common Stock

Sale

Transaction value: $38,962
Shares: -1,400
Change %: -0.02%
Price: $27.83
Shares after: 8,225,200
Date: 03 Jun 2026
Ownership: Direct
Footnotes: F1, F16

NNE transaction

Common Stock

Sale

Transaction value: $14,445
Shares: -500
Change %: -0.01%
Price: $28.89
Shares after: 8,224,700
Date: 03 Jun 2026
Ownership: Direct
Footnotes: F1, F17

NNE transaction

Common Stock

Sale

Transaction value: $20,937
Shares: -700
Change %: -0.01%
Price: $29.91
Shares after: 8,224,000
Date: 03 Jun 2026
Ownership: Direct
Footnotes: F1, F18

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

NNE transaction Derivative

Stock Options

Options Exercise

Transaction value
Shares: -200,000
Change %: -40%
Price: $0.000000^*
Shares after: 300,000
Date: 03 Jun 2026
Ownership: By I Financial Ventures Group LLC
Underlying class: Common Stock
Underlying amount: 20,000
Exercise price: $3.00
Footnotes: F2

NNE transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -45,900
Change %: -14%
Price: $0.000000^*
Shares after: 275,778
Date: 03 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 45,900
Exercise price: $0.000000
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 18 footnotes

Footnote F1

This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in September 2025.

Footnote F2

Represents shares of common stock issued upon exercise of certain options originally granted to the reporting person through I Financial (as defined below) at the exercise price of $3 per share, which were fully vested and exercisable on June 7, 2023, with expiry on June 7, 2026. On June 3, 2026, such options were exercised. The reporting person is the sole shareholder and director of I Financial Ventures Group LLC ("I Financial"), a limited liability company incorporated under the laws of Delaware, which is the record holder of the securities reported herein. The reporting person, as such, has investment control over the securities of the issuer held by I Financial and may be deemed the beneficial owner of such securities.

Footnote F3

Represents shares of common stock issued upon the settlement of Restricted Stock Units ("RSUs") granted on June 3, 2025 under the Issuer's 2025 Equity Incentive Plan based on a value per share of $29.18, the closing price of the Issuer's common stock as reported on The Nasdaq Capital Market on June 3, 2025. On June 3, 2026, one third (1/3) of such RSUs were vested and settled.

Footnote F4

This transaction was executed in multiple trades during the day at prices ranging from $25.7000 to $26.6900. The weighted-average price is reported above. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

Footnote F5

This transaction was executed in multiple trades during the day at prices ranging from $26.7000 to $27.6900. The weighted-average price is reported above. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

Footnote F6

This transaction was executed in multiple trades during the day at prices ranging from $27.7200 to $28.3500. The weighted-average price is reported above. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

Footnote F7

This transaction was executed in multiple trades during the day at prices ranging from $28.7700 to $29.0500. The weighted-average price is reported above. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

Footnote F8

This transaction was executed at a price of $29.9100. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

Footnote F9

Footnote F10

Footnote F11

Footnote F12

Footnote F13

Footnote F14

Footnote F15

This transaction was executed in multiple trades during the day at prices ranging from $26.7000 to $27.6400. The weighted-average price is reported above. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

Footnote F16

This transaction was executed in multiple trades during the day at prices ranging from $27.7000 to $28.5000. The weighted-average price is reported above. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

Footnote F17

This transaction was executed in multiple trades during the day at prices ranging from $28.7700 to $28.9200. The weighted-average price is reported above. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

Footnote F18