One Nuclear Energy Inc is a development-stage independent power producer focused on developing reliable, high-density, low-carbon baseload electricity and heat generation projects to support energy supply needs in the digital economy. The company's objective is to serve a range of energy-intensive customers across multiple sectors, including data centers, industrial manufacturing, refineries, desalination facilities, and other critical infrastructure users.
ONEN Form 4 activity by transaction type, last 90 days
Form 4 transaction type
Transactions
Shares
Total value
Option exercise
26
35,104,996
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
ONEN insider transactions (Form 4)
26
9 Form 4 filings on record, the earliest from Sep 23, 2026, newest first.
Footnote F1 (price): Pursuant to the business combination agreement dated October 22, 2025 (the "Merger Agreement"), among other things, at the closing of the transactions contemplated thereby (the "Closing," and the date on which the Closing occurred, the "Closing Date") and following the… Full note on SEC EDGAR
Footnote F2 (price): Pursuant to the Merger Agreement, on the Closing Date prior to the Closing, each then issued and outstanding Class B ordinary share, par value $0.0001 per share, of the Predecessor Issuer (each a "Class B Ordinary Share") converted (the "Sponsor Share Conversion") automatically… Full note on SEC EDGAR
Footnote F4 (shares): The reporting person also has pecuniary interests in securities through his membership interest in HC VII Sponsor LLC, over which the reporting person does not have voting or dispositive control.
Footnote F1 (price): Pursuant to the business combination agreement dated October 22, 2025 (the "Merger Agreement"), among other things, at the closing of the transactions contemplated thereby (the "Closing," and the date on which the Closing occurred, the "Closing Date") and following the… Full note on SEC EDGAR
Footnote F2 (price): Pursuant to the Merger Agreement, on the Closing Date prior to the Closing, each then issued and outstanding Class B ordinary share, par value $0.0001 per share, of the Predecessor Issuer (each a "Class B Ordinary Share") converted (the "Sponsor Share Conversion") automatically… Full note on SEC EDGAR
Footnote F4 (shares): The reporting person also has pecuniary interests in securities through her membership interest in HC VII Sponsor LLC, over which the reporting person does not have voting or dispositive control.
Footnote F1 (price): Pursuant to the business combination agreement dated October 22, 2025 (the "Merger Agreement"), among other things, at the closing of the transactions contemplated thereby (the "Closing," and the date on which the Closing occurred, the "Closing Date") and following the… Full note on SEC EDGAR
Footnote F2 (price): Pursuant to the Merger Agreement, on the Closing Date prior to the Closing, each then issued and outstanding Class B ordinary share, par value $0.0001 per share, of the Predecessor Issuer (each a "Class B Ordinary Share") converted (the "Sponsor Share Conversion") automatically… Full note on SEC EDGAR
Footnote F5 (shares): Amount has been adjusted to reflect the forfeiture of 375,000 Class B Ordinary Shares for no further consideration on January 21, 2025, upon the expiration of the underwriters' over-allotment option, which was partially exercised in connection with the Predecessor Issuer's… Full note on SEC EDGAR
Footnote F7 (price): Pursuant to the Merger Agreement, each twelve Successor Rights were automatically surrendered in exchange for one Successor Share at the Closing.
Footnote F1 (price): Pursuant to the business combination agreement dated October 22, 2025 (the "Merger Agreement"), among other things, at the closing of the transactions contemplated thereby (the "Closing," and the date on which the Closing occurred, the "Closing Date") and following the… Full note on SEC EDGAR
Footnote F2 (price): Pursuant to the Merger Agreement, on the Closing Date prior to the Closing, each then issued and outstanding Class B ordinary share, par value $0.0001 per share, of the Predecessor Issuer (each a "Class B Ordinary Share") converted (the "Sponsor Share Conversion") automatically… Full note on SEC EDGAR
Footnote F5 (shares): Amount has been adjusted to reflect the forfeiture of 375,000 Class B Ordinary Shares for no further consideration on January 21, 2025, upon the expiration of the underwriters' over-allotment option, which was partially exercised in connection with the Predecessor Issuer's… Full note on SEC EDGAR
Footnote F7 (price): Pursuant to the Merger Agreement, each twelve Successor Rights were automatically surrendered in exchange for one Successor Share at the Closing.
Footnote F1 (price): Pursuant to the business combination agreement dated October 22, 2025 (the "Merger Agreement"), among other things, at the closing of the transactions contemplated thereby (the "Closing," and the date on which the Closing occurred, the "Closing Date") and following the… Full note on SEC EDGAR
Footnote F2 (price): Pursuant to the Merger Agreement, on the Closing Date prior to the Closing, each then issued and outstanding Class B ordinary share, par value $0.0001 per share, of the Predecessor Issuer (each a "Class B Ordinary Share") converted (the "Sponsor Share Conversion") automatically… Full note on SEC EDGAR
Footnote F5 (shares): Amount has been adjusted to reflect the forfeiture of 375,000 Class B Ordinary Shares for no further consideration on January 21, 2025, upon the expiration of the underwriters' over-allotment option, which was partially exercised in connection with the Predecessor Issuer's… Full note on SEC EDGAR
Footnote F7 (price): Pursuant to the Merger Agreement, each twelve Successor Rights were automatically surrendered in exchange for one Successor Share at the Closing.
Footnote F1 (price): Pursuant to the business combination agreement dated October 22, 2025 (the "Merger Agreement"), among other things, at the closing of the transactions contemplated thereby (the "Closing," and the date on which the Closing occurred, the "Closing Date") and following the… Full note on SEC EDGAR
Footnote F2 (price): Pursuant to the Merger Agreement, on the Closing Date prior to the Closing, each then issued and outstanding Class B ordinary share, par value $0.0001 per share, of the Predecessor Issuer (each a "Class B Ordinary Share") converted (the "Sponsor Share Conversion") automatically… Full note on SEC EDGAR
Footnote F4 (shares): The reporting person also has pecuniary interests in securities through his membership interest in HC VII Sponsor LLC, over which the reporting person does not have voting or dispositive control.
Footnote F1 (price): Pursuant to the business combination agreement dated October 22, 2025 (the "Merger Agreement"), among other things, at the closing of the transactions contemplated thereby (the "Closing," and the date on which the Closing occurred, the "Closing Date") and following the… Full note on SEC EDGAR
Footnote F2 (price): Pursuant to the Merger Agreement, on the Closing Date prior to the Closing, each then issued and outstanding Class B ordinary share, par value $0.0001 per share, of the Predecessor Issuer (each a "Class B Ordinary Share") converted (the "Sponsor Share Conversion") automatically… Full note on SEC EDGAR
Footnote F4 (shares): The reporting person also has pecuniary interests in securities through her membership interest in HC VII Sponsor LLC, over which the reporting person does not have voting or dispositive control.
Footnote F1 (price): Pursuant to the business combination agreement dated October 22, 2025 (the "Merger Agreement"), among other things, at the closing of the transactions contemplated thereby (the "Closing," and the date on which the Closing occurred, the "Closing Date") and following the… Full note on SEC EDGAR
Footnote F2 (price): Pursuant to the Merger Agreement, on the Closing Date prior to the Closing, each then issued and outstanding Class B ordinary share, par value $0.0001 per share, of the Predecessor Issuer (each a "Class B Ordinary Share") converted (the "Sponsor Share Conversion") automatically… Full note on SEC EDGAR
Footnote F4 (shares): The reporting person also has pecuniary interests in securities through his membership interest in HC VII Sponsor LLC, over which the reporting person does not have voting or dispositive control.
Footnote F1 (price): Pursuant to the business combination agreement dated October 22, 2025 (the "Merger Agreement"), among other things, at the closing of the transactions contemplated thereby (the "Closing," and the date on which the Closing occurred, the "Closing Date") and following the… Full note on SEC EDGAR
Footnote F2 (price): Pursuant to the Merger Agreement, on the Closing Date prior to the Closing, each then issued and outstanding Class B ordinary share, par value $0.0001 per share, of the Predecessor Issuer (each a "Class B Ordinary Share") converted (the "Sponsor Share Conversion") automatically… Full note on SEC EDGAR
Footnote F4 (shares): The reporting person also has pecuniary interests in securities through his membership interest in HC VII Sponsor LLC, over which the reporting person does not have voting or dispositive control.
ONE Nuclear Energy Inc. (ONEN) had 9 insider filings in the last 90 days, with the most recent on 2026-09-23. The full record for ONEN runs to 9 Form 4 filings, the earliest from 2026-09-23. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying ONEN stock?
No insider purchases of ONEN were filed in the last 90 days.
How many insiders are selling ONEN stock?
No insider sales of ONEN were filed in the last 90 days.
Where can I see ONEN SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects ONEN Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.