Nano Nuclear Energy (NNE) 4: Garcha Jaisun bought 75,000 shares of Common Stock at $1.50… (Jan 30, 2026)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-01-28 10b5-1 Pre-arranged Plan: Yes --- Issuer --- Name: Nano Nuclear Energy Inc. (NNE) CIK: 0001923891 --- Reporting Owner --- Name: Garcha Jaisun CIK: 0001999680 Role: Officer (Chief Financial Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-01-28 | Code: M (Exercise of derivative) Shares: +75,000 | Price: $1.50 Total Value: $112,500.00 Shares Owned After: 325,000 | Ownership: D (Direct) Footnotes: [F1] Represents the number of shares of common stock issued upon exercise of certain options originally granted to the reporting person at the exercise price of $1.50 per share, which were fully vested and exercisable on February 10, 2023, with expiry on February 10, 2026. On January 28, 2026, such options were exercised. [Transaction #2] Security: Common Stock Date: 2026-01-28 | Code: S (Open market sale) Shares: -39,845 | Price: $33.66 Total Value: $1,341,230.51 Shares Owned After: 285,155 | Ownership: D (Direct) Footnotes: [F2] This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in September 2025. [F3] This transaction was executed in multiple trades during the day at prices ranging from $33.1400 to $34.1400. 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. [Transaction #3] Security: Common Stock Date: 2026-01-28 | Code: S (Open market sale) Shares: -31,163 | Price: $34.38 Total Value: $1,071,253.06 Shares Owned After: 253,992 | Ownership: D (Direct) Footnotes: [F2] This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in September 2025. [F4] This transaction was executed in multiple trades during the day at prices ranging from $34.1500 to $34.9300. 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. [Transaction #4] Security: Common Stock Date: 2026-01-28 | Code: S (Open market sale) Shares: -3,992 | Price: $35.23 Total Value: $140,643.75 Shares Owned After: 250,000 | Ownership: D (Direct) Footnotes: [F2] This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in September 2025. [F5] This transaction was executed in multiple trades during the day at prices ranging from $35.2100 to $35.2500. 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. --- Derivative Transactions --- [Transaction #1] Security: Stock Options Date: 2026-01-28 | Code: M (Exercise of derivative) Shares: -75,000 | Price: $0.00 Shares Owned After: 265,000 | Ownership: D (Direct) Footnotes: [F1] Represents the number of shares of common stock issued upon exercise of certain options originally granted to the reporting person at the exercise price of $1.50 per share, which were fully vested and exercisable on February 10, 2023, with expiry on February 10, 2026. On January 28, 2026, such options were exercised. [F1] Represents the number of shares of common stock issued upon exercise of certain options originally granted to the reporting person at the exercise price of $1.50 per share, which were fully vested and exercisable on February 10, 2023, with expiry on February 10, 2026. On January 28, 2026, such options were exercised. [F1] Represents the number of shares of common stock issued upon exercise of certain options originally granted to the reporting person at the exercise price of $1.50 per share, which were fully vested and exercisable on February 10, 2023, with expiry on February 10, 2026. On January 28, 2026, such options were exercised. [F1] Represents the number of shares of common stock issued upon exercise of certain options originally granted to the reporting person at the exercise price of $1.50 per share, which were fully vested and exercisable on February 10, 2023, with expiry on February 10, 2026. On January 28, 2026, such options were exercised. --- Footnotes (Complete Index) --- F1: Represents the number of shares of common stock issued upon exercise of certain options originally granted to the reporting person at the exercise price of $1.50 per share, which were fully vested and exercisable on February 10, 2023, with expiry on February 10, 2026. On January 28, 2026, such options were exercised. F2: This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in September 2025. F3: This transaction was executed in multiple trades during the day at prices ranging from $33.1400 to $34.1400. 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. F4: This transaction was executed in multiple trades during the day at prices ranging from $34.1500 to $34.9300. 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. F5: This transaction was executed in multiple trades during the day at prices ranging from $35.2100 to $35.2500. 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. --- Signature --- /s/ /s/ Jaisun Garcha (2026-01-30)