Walker James John
Chief Executive Officer
Walker James John has filed 7 SEC Form 4 filings (23 transaction rows) across 1 company, with disclosures dating back to 2025. 7 of those filings fall inside the rolling window. Most recent filing: Sep 3, 2026.
On the most recent filing, Walker James John is listed as Chief Executive Officer at Nano Nuclear Energy Inc. Inside the rolling window, Walker James John reported no open-market purchases and 5 open-market sales totaling $11.5M in NNE. The largest disclosed transaction in the window is a sale of 195,000 NNE shares on Jan 28, 2026, worth $6.6M.
Companies traded
Other insiders at NNE
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$11.5M
reported sales (SEC code S)
Companies
1
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has Walker James John made?
Walker James John has filed 7 SEC Form 4 filings (23 transaction rows) across 1 company since 2025.
Which companies does Walker James John trade?
Walker James John has filed SEC Form 4 disclosures for 1 company, including NNE.
When was Walker James John's most recent SEC Form 4 filing?
Walker James John's most recent SEC Form 4 filing on Tracefour is dated Sep 3, 2026.
What is Walker James John's job title?
On the most recent SEC Form 4 filings tracked by Tracefour, Walker James John is listed as Chief Executive Officer.
What is Walker James John's total buy and sell value in the current window?
Inside the rolling retention window, Walker James John bought $0 and sold $11.5M based on SEC Form 4 filings.
What was Walker James John's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 195,000 NNE shares on 2026-01-28, worth $6.6M, per SEC Form 4 filings.