X0609 4 2026-06-03 0 0001923891 Nano Nuclear Energy Inc. NNE 0002011890 I Financial Ventures Group LLC false C/O 10 TIMES SQUARE, 30TH FLOOR NEW YORK NY 10018 0 0 1 0 1 Common Stock 2026-06-03 4 S 0 312553 26.2987 D 8411447 D Common Stock 2026-06-03 4 S 0 168626 27.1617 D 8242821 D Common Stock 2026-06-03 4 S 0 10035 27.8327 D 8232786 D Common Stock 2026-06-03 4 S 0 3571 28.9772 D 8229215 D Common Stock 2026-06-03 4 S 0 5215 29.91 D 8224000 D Common Stock 2026-06-03 4 M 0 200000 3 A 8424000 D Common Stock 2026-06-03 4 S 0 125021 26.2987 D 8298979 D Common Stock 2026-06-03 4 S 0 67451 27.1617 D 8231528 D Common Stock 2026-06-03 4 S 0 4014 27.8327 D 8227514 D Common Stock 2026-06-03 4 S 0 1429 28.9772 D 8226085 D Common Stock 2026-06-03 4 S 0 2085 29.9100 D 8224000 D Stock Options 3 2026-06-03 4 M 0 200000 0 D Common Stock 200000 0 D This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person through I Financial, in September 2025, and was executed in the account of I Financial. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. /s/ Jiang Yu, Sole Shareholder and Director of I Financial Ventures Group LLC 2026-06-05