X0508 4 2026-01-28 0 0001923891 Nano Nuclear Energy Inc. NNE 0001999118 Yu Jiang 10 TIMES SQUARE, 30TH FLOOR NEW YORK NY 10018 1 1 1 0 President and Chairman 1 Common Stock 2026-01-28 4 M 0 179965 1.5 A 9291965 I By I Financial Ventures Group LLC Common Stock 2026-01-28 4 S 0 179965 33.8268 D 9112000 I By I Financial Ventures Group LLC Common Stock 2026-01-28 4 M 0 196474 1.5 A 9308474 I By I Financial Ventures Group LLC Common Stock 2026-01-28 4 S 0 196474 34.4232 D 9112000 I By I Financial Ventures Group LLC Common Stock 2026-01-28 4 M 0 2222 1.5 A 9114222 I By I Financial Ventures Group LLC Common Stock 2026-01-28 4 S 0 2222 35.2500 D 9112000 I By I Financial Ventures Group LLC Common Stock 2026-01-28 4 S 0 184403 33.8268 D 8927597 I By I Financial Ventures Group LLC Common Stock 2026-01-28 4 S 0 201320 34.4232 D 8726277 I By I Financial Ventures Group LLC Common Stock 2026-01-28 4 S 0 2277 35.2500 D 8724000 I By I Financial Ventures Group LLC Common Stock 2026-01-29 4 M 0 19584 1.5 A 8743584 I By I Financial Ventures Group LLC Common Stock 2026-01-29 4 S 0 19584 30.7623 D 8724000 I By I Financial Ventures Group LLC Common Stock 2026-01-29 4 M 0 87680 1.5 A 8811680 I By I Financial Ventures Group LLC Common Stock 2026-01-29 4 S 0 87680 31.8070 D 8724000 I By I Financial Ventures Group LLC Common Stock 2026-01-29 4 M 0 10975 1.5 A 8734975 I By I Financial Ventures Group LLC Common Stock 2026-01-29 4 S 0 10975 32.8367 D 8724000 I By I Financial Ventures Group LLC Common Stock 2026-01-29 4 M 0 3100 1.5 A 8727100 I By I Financial Ventures Group LLC Common Stock 2026-01-29 4 S 0 3100 33.7406 D 8724000 I By I Financial Ventures Group LLC Stock Options 1.5 2026-01-28 4 M 0 378661 0 D Common Stock 378661 621339 I By I Financial Ventures Group LLC Stock Options 1.5 2026-01-29 4 M 0 121339 0 D Common Stock 121339 500000 I By I Financial Ventures Group LLC Represents the number of 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 $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. 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 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. This transaction was executed in multiple trades during the day at prices ranging from $33.1000 to $34.0950. 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 $34.1000 to $34.9600. 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 $35.2500. 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 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. This transaction was executed in multiple trades during the day at prices ranging from $33.1000 to $34.0950. 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 $34.1000 to $34.9600. 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 $35.2500. 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. Represents the number of shares of common stock issued upon exercise of certain options originally granted to the reporting person through I Financial 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 29, 2026, such options were exercised. 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. This transaction was executed in multiple trades during the day at prices ranging from $30.2500 to $31.2400. 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 $31.2600 to $32.2400. 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 $32.3300 to $33.3100. 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 $33.3300 to $34.0000. 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. Represent 200,000 shares of common stock issuable to I Financial upon the exercise of the vested options within 60 days of the date of this report and 300,000 shares of common stock issuable to the reporting person upon the exercise of the vested options within 60 days of the date of this report. /s/ Jiang Yu 2026-01-30