Insider · CIK 0002021757
James John Walker
Files at NNE (Nano Nuclear Energy Inc.). First filing Dec 30, 2025, latest Sep 3, 2026.
In brief
James John Walker files SEC Form 4 as CEO and director at NNE (Nano Nuclear Energy Inc.). Since Dec 30, 2025, James John Walker has reported 0 open-market buys worth $0 and 5 open-market sells worth $12M, the latest filed on Sep 3, 2026.
A track record needs three past buys with six months of prices behind them; James John Walker has 0, so none is measured yet.
The newest scored trade: sold $436k of NNE on Sep 1, 2026, filed Sep 3, 2026, scored 30 (weak), under a 10b5-1 plan. In the last 12 months: 0 buys worth $0 and 5 sells worth $12M.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
NNE: Nano Nuclear Energy Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 30Weak | Nano Nuclear Energy Inc. | $436k 25,000 shares | -4% | - | |
| 30Weak | Nano Nuclear Energy Inc. | $444k 25,000 shares | -4% | - | |
| 35Weak | Nano Nuclear Energy Inc. | $3.3M 123,688 shares | -19% | +39% from low-53% from high | |
| 40Moderate | Nano Nuclear Energy Inc. | $6.6M 195,000 shares | -44% | +87% from low-39% from high | |
| 42Moderate | Nano Nuclear Energy Inc. | $753k 25,000 shares | -8% | +64% from low-46% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Sep 3, 2026 | NNE Nano Nuclear Energy Inc. | 25,000 0.05% of outstanding | $444k | Sep 3, 2026 | $3.7M |
| Sep 1, 2026 | NNE Nano Nuclear Energy Inc. | 25,000 0.05% of outstanding | $435k | Sep 1, 2026 | $3.3M |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | 123,688 0.24% of outstanding | $3.7M | Jun 3, 2026 | none |
| Jan 28, 2026 | NNE Nano Nuclear Energy Inc. | 195,000 0.39% of outstanding | $6.9M | Jan 28, 2026 | $753k |
| Dec 29, 2025 | NNE Nano Nuclear Energy Inc. | 25,000 0.05% of outstanding | $753k | Dec 24, 2025 | none |
Transactions
Every row this insider has filed, 31 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Oct 1, 2026 | NNE Nano Nuclear Energy Inc. | AGrant or award Restricted Stock Unitsderivative10b5-1 | +257,790 | $0.00 | $0 | 0 | 9 d ago |
| Sep 3, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -25,000 | $17.77 | $444k | 635,000 | 41 d ago |
| Sep 1, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -25,000 | $17.44 | $436k | 660,000 | 41 d ago |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | MOption exercise Common Stock | +200,000 | $3.00 | $600k | 780,000 | Aug 26, 2026 |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | MOption exercise Stock Optionsderivative | -200,000 | $0.00 | $0 | 300,000 | Aug 26, 2026 |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | MOption exercise Common Stock10b5-1 | +70,000 | $3.00 | $210k | 650,000 | Jun 5, 2026 |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -46,145 | $26.18 | $1.2M | 603,855 | Jun 5, 2026 |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -22,380 | $27.06 | $606k | 581,475 | Jun 5, 2026 |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -1,475 | $27.90 | $41k | 580,000 | Jun 5, 2026 |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | MOption exercise Common Stock10b5-1 | +28,688 | $0.00 | $0 | 608,688 | Jun 5, 2026 |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -25,792 | $26.77 | $690k | 582,896 | Jun 5, 2026 |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -2,624 | $27.56 | $72k | 580,272 | Jun 5, 2026 |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -201 | $28.69 | $5,766 | 580,071 | Jun 5, 2026 |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -71 | $29.91 | $2,124 | 580,000 | Jun 5, 2026 |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -25,000 | $26.04 | $651k | 555,000 | Jun 5, 2026 |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | MOption exercise Stock Optionsderivative10b5-1 | -70,000 | $0.00 | $0 | 430,000 | Jun 5, 2026 |
| Jun 3, 2026 | NNE Nano Nuclear Energy Inc. | MOption exercise Restricted Stock Unitsderivative10b5-1 | -28,688 | $0.00 | $0 | 146,398 | Jun 5, 2026 |
| Feb 2, 2026 | NNE Nano Nuclear Energy Inc. | MOption exercise Common Stock | +330,000 | $1.50 | $495k | 580,000 | Feb 4, 2026 |
| Feb 2, 2026 | NNE Nano Nuclear Energy Inc. | MOption exercise Stock Optionsderivative | -330,000 | $0.00 | $0 | 500,000 | Feb 4, 2026 |
| Jan 28, 2026 | NNE Nano Nuclear Energy Inc. | MOption exercise Common Stock10b5-1 | +170,000 | $1.50 | $255k | 445,000 | Jan 30, 2026 |
| Jan 28, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -86,098 | $33.64 | $2.9M | 358,902 | Jan 30, 2026 |
| Jan 28, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -76,171 | $34.37 | $2.6M | 282,731 | Jan 30, 2026 |
| Jan 28, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -7,731 | $35.26 | $273k | 275,000 | Jan 30, 2026 |
| Jan 28, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -13,581 | $33.66 | $457k | 261,419 | Jan 30, 2026 |
| Jan 28, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -10,609 | $34.38 | $365k | 250,810 | Jan 30, 2026 |
| Jan 28, 2026 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -810 | $35.27 | $29k | 250,000 | Jan 30, 2026 |
| Jan 28, 2026 | NNE Nano Nuclear Energy Inc. | MOption exercise Stock Optionsderivative10b5-1 | -170,000 | $0.00 | $0 | 830,000 | Jan 30, 2026 |
| Dec 24, 2025 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -22,459 | $30.03 | $674k | 277,541 | Dec 30, 2025 |
| Dec 24, 2025 | NNE Nano Nuclear Energy Inc. | SOpen-market sale Common Stock10b5-1 | -2,541 | $30.97 | $79k | 275,000 | Dec 30, 2025 |
| Nov 13, 2025 | NNE Nano Nuclear Energy Inc. | AGrant or award Restricted Stock Unitsderivative | +89,022 | $0.00 | $0 | 0 | Nov 17, 2025 |
| Jun 3, 2025 | NNE Nano Nuclear Energy Inc. | AGrant or award Restricted Stock Unitsderivative | +86,064 | $0.00 | $0 | 0 | Jun 5, 2025 |
Questions about James John Walker
Answered from the filings on this page, as of the latest one.
Is James John Walker buying or selling?
In the last 12 months James John Walker reported 0 open-market buys worth $0 and 5 open-market sells worth $12M on SEC Form 4; the latest was sold $436k of NNE on Sep 1, 2026. Grants, option exercises and tax withholding are not counted.
How did James John Walker's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and James John Walker has 0.
Where does James John Walker file Form 4?
James John Walker has filed Form 4 at NNE (Nano Nuclear Energy Inc.) as Chief Executive Officer. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.