Athena Technology Acquisition Corp. II SEC filings ATEKU
Athena Technology Acquisition Corp. II has 212 filings in SEC EDGAR's recent list, going back to Oct 18, 2021. Its latest annual report, Form 10-K, was filed on Mar 11, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 13, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 15, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Other events
|
Oct 15, 2026 | Oct 14, 2026 |
| POS EX | Post-effective amendment no. 1 to form s-4 | Oct 5, 2026 | — |
| 8-K |
Current report
Material agreement
|
Sep 29, 2026 | Sep 24, 2026 |
| 8-K |
Current report
Shareholder vote results, Other events
|
Sep 11, 2026 | Sep 10, 2026 |
| 10-Q | Quarterly report | Aug 13, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Other events
|
Aug 13, 2026 | Aug 13, 2026 |
| EFFECT | Filing | Aug 12, 2026 | — |
| 424B3 | Prospectus | Aug 12, 2026 | — |
| S-4/A | Registration statement | Aug 11, 2026 | — |
| S-4/A | Registration statement | Aug 10, 2026 | — |
| S-4/A | Registration statement | Jul 27, 2026 | — |
| 8-K |
Current report
Other events
|
Jul 13, 2026 | Jul 10, 2026 |
| S-4/A | Registration statement | Jul 10, 2026 | — |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results, Other events
|
Jun 12, 2026 | Jun 11, 2026 |
| DEF 14A | Proxy statement | May 22, 2026 | Jun 11, 2026 |
| 10-Q | Quarterly report | May 15, 2026 | Mar 31, 2026 |
| PRE 14A | Preliminary proxy statement | May 8, 2026 | May 8, 2026 |
| 8-K |
Current report
Other events
|
May 4, 2026 | May 4, 2026 |
| S-4/A | Registration statement | Apr 30, 2026 | — |
| 425 | Current report | Apr 23, 2026 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Apr 23, 2026 | Apr 18, 2026 |
| 8-K |
Current report
Other events
|
Apr 7, 2026 | Apr 6, 2026 |
| 425 | Current report | Mar 25, 2026 | — |
| 8-K |
Current report
Material agreement
|
Mar 25, 2026 | Mar 19, 2026 |
| S-4/A | Registration statement | Mar 24, 2026 | — |
| 10-K | Annual report | Mar 11, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Other events
|
Mar 5, 2026 | Mar 4, 2026 |
| 8-K |
Current report
Other events
|
Feb 5, 2026 | Feb 5, 2026 |
| 425 | Current report | Jan 30, 2026 | — |
| 8-K |
Current report
Other events
|
Jan 30, 2026 | Jan 30, 2026 |
| S-4/A | Registration statement | Jan 26, 2026 | — |
| 8-K |
Current report
Other events
|
Jan 6, 2026 | Jan 5, 2026 |
| 10-Q | Quarterly report | Dec 31, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Dec 30, 2025 | Dec 30, 2025 |
| DEF 14A | Proxy statement | Dec 12, 2025 | Dec 30, 2025 |
| 8-K |
Current report
Other events
|
Dec 9, 2025 | Dec 8, 2025 |
| NT 10-Q | Notification of late filing | Nov 13, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Other events
|
Nov 4, 2025 | Nov 4, 2025 |
| S-4/A | Registration statement | Oct 27, 2025 | — |
| 8-K |
Current report
Other events
|
Oct 8, 2025 | Oct 7, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results, Other events
|
Sep 12, 2025 | Sep 10, 2025 |
| DEF 14A | Proxy statement | Aug 28, 2025 | Sep 10, 2025 |
| 10-Q | Quarterly report | Aug 19, 2025 | Jun 30, 2025 |
| NT 10-Q | Notification of late filing | Aug 14, 2025 | Jun 30, 2025 |
| PRE 14A | Preliminary proxy statement | Aug 13, 2025 | Aug 13, 2025 |
| 8-K |
Current report
Other events
|
Aug 11, 2025 | Aug 11, 2025 |
| 8-K |
Current report
Other events
|
Jul 9, 2025 | Jul 8, 2025 |
| 8-K |
Current report
Other events
|
Jun 6, 2025 | Jun 6, 2025 |
| 10-Q | Quarterly report | May 20, 2025 | Mar 31, 2025 |
| 425 | Current report | May 19, 2025 | — |
| 8-K |
Current report
Other events
|
May 19, 2025 | May 16, 2025 |
| NT 10-Q | Notification of late filing | May 15, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Other events
|
May 7, 2025 | May 7, 2025 |
| S-4 | Registration for a merger or exchange | Apr 30, 2025 | — |
| 8-K |
Current report
Other events
|
Apr 8, 2025 | Apr 7, 2025 |
| 10-K | Annual report | Mar 21, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Other events
|
Mar 7, 2025 | Mar 6, 2025 |
| 8-K |
Current report
Other events
|
Feb 12, 2025 | Feb 10, 2025 |
| 10-Q | Quarterly report | Feb 7, 2025 | Sep 30, 2024 |
| 8-K |
Current report
Other events
|
Jan 10, 2025 | Jan 10, 2025 |
| 25-NSE | Delisting notice | Dec 19, 2024 | — |
| 425 | Current report | Dec 12, 2024 | — |
| 8-K |
Current report
Listing notice, Other events
|
Dec 12, 2024 | Dec 6, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results, Other events
|
Dec 11, 2024 | Dec 10, 2024 |
| DEFA14A | Additional proxy material | Dec 5, 2024 | — |
| 425 | Current report | Dec 5, 2024 | — |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Dec 5, 2024 | Dec 4, 2024 |
| 8-K |
Current report
Listing notice, Regulation FD disclosure
|
Nov 25, 2024 | Nov 20, 2024 |
| UPLOAD | Letter from the SEC | Nov 22, 2024 | — |
| DEF 14A | Proxy statement | Nov 21, 2024 | Dec 10, 2024 |
| CORRESP | Letter to the SEC | Nov 20, 2024 | — |
| CORRESP | Letter to the SEC | Nov 18, 2024 | — |
| PRER14A | Proxy statement | Nov 18, 2024 | — |
| UPLOAD | Letter from the SEC | Nov 15, 2024 | — |
| NT 10-Q | Notification of late filing | Nov 14, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Other events
|
Nov 12, 2024 | Nov 11, 2024 |
| PRE 14A | Preliminary proxy statement | Nov 4, 2024 | Nov 4, 2024 |
| 10-Q | Quarterly report | Nov 1, 2024 | Jun 30, 2024 |
| 10-Q | Quarterly report | Nov 1, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Other events
|
Oct 15, 2024 | Oct 15, 2024 |
| 10-K | Annual report | Sep 27, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Restatement, Other events
|
Sep 13, 2024 | Sep 10, 2024 |
| NT 10-Q | Filing | Aug 14, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Other events
|
Aug 8, 2024 | Aug 8, 2024 |
| 8-K |
Current report
Officer or director change
|
Jul 24, 2024 | Jul 18, 2024 |
| 425 | Form 8-k | Jul 11, 2024 | — |
| 8-K |
Current report
Other events
|
Jul 11, 2024 | Jul 10, 2024 |
| 425 | Form 8-k | Jun 17, 2024 | — |
| 8-K |
Current report
Other events
|
Jun 17, 2024 | Jun 14, 2024 |
| NT 10-Q | Notification of late filing | May 16, 2024 | Mar 31, 2024 |
| 425 | Current report | May 14, 2024 | — |
| 8-K |
Current report
Other events
|
May 14, 2024 | May 14, 2024 |
| 425 | Current report | Apr 24, 2024 | — |
| 8-K |
Current report
Listing notice, Regulation FD disclosure
|
Apr 24, 2024 | Apr 17, 2024 |
| 425 | Form 8-k | Apr 22, 2024 | — |
| 8-K |
Current report
Other events
|
Apr 22, 2024 | Apr 16, 2024 |
| NT 10-K | Notification of late filing | Apr 2, 2024 | Dec 31, 2023 |
| 425 | Current report | Mar 18, 2024 | — |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results, Other events
|
Mar 18, 2024 | Mar 12, 2024 |
| DEF 14A | Proxy statement | Feb 23, 2024 | Mar 12, 2024 |
| PRE 14A | Preliminary proxy statement | Feb 13, 2024 | Feb 13, 2024 |
| 425 | Form 8-k | Feb 12, 2024 | — |
| 8-K |
Current report
Other events
|
Feb 12, 2024 | Feb 9, 2024 |
| 425 | Current report | Jan 9, 2024 | — |
| 8-K |
Current report
Other events
|
Jan 9, 2024 | Jan 8, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Dec 19, 2023 | Dec 19, 2023 |
| 425 | Current report | Dec 14, 2023 | — |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets
|
Dec 14, 2023 | Dec 13, 2023 |
| 425 | Current report | Dec 11, 2023 | — |
| 8-K |
Current report
Other events
|
Dec 11, 2023 | Dec 8, 2023 |
| DEF 14A | Proxy statement | Dec 7, 2023 | Dec 19, 2023 |
| 10-Q | Quarterly report | Nov 20, 2023 | Sep 30, 2023 |
| NT 10-Q | Notification of late filing | Nov 14, 2023 | Sep 30, 2023 |
| 425 | Current report | Nov 8, 2023 | — |
| 8-K |
Current report
Other events
|
Nov 8, 2023 | Nov 7, 2023 |
| 425 | Current report | Oct 6, 2023 | — |
| 8-K |
Current report
Other events
|
Oct 6, 2023 | Oct 6, 2023 |
| 425 | Current report | Oct 5, 2023 | — |
| 8-K |
Current report
Material agreement
|
Oct 5, 2023 | Sep 30, 2023 |
| 425 | Current report | Sep 8, 2023 | — |
| 8-K |
Current report
Other events
|
Sep 8, 2023 | Sep 7, 2023 |
| 425 | Current report | Aug 25, 2023 | — |
| 8-K |
Current report
Material agreement
|
Aug 25, 2023 | Aug 22, 2023 |
| 10-Q | Quarterly report | Aug 18, 2023 | Jun 30, 2023 |
| NT 10-Q | Notification of late filing | Aug 14, 2023 | Jun 30, 2023 |
| 425 | Form 8-k | Aug 9, 2023 | — |
| 8-K |
Current report
Other events
|
Aug 9, 2023 | Aug 8, 2023 |
| 25 | Form 25 | Jul 27, 2023 | — |
| 425 | Current report | Jul 21, 2023 | — |
| 8-K |
Current report
Material agreement
|
Jul 21, 2023 | Jul 20, 2023 |
| CERT | Nyse american certification | Jul 18, 2023 | — |
| 8-A12B | For registration of certain classes | Jul 18, 2023 | — |
| 425 | Current report | Jul 17, 2023 | — |
| 8-K |
Current report
Listing notice, Regulation FD disclosure
|
Jul 17, 2023 | Jul 17, 2023 |
| 425 | Current report | Jul 11, 2023 | — |
| 8-K |
Current report
Other events
|
Jul 11, 2023 | Jul 7, 2023 |
| 425 | Current report | Jun 27, 2023 | — |
| 8-K |
Current report
Unregistered share sale, Regulation FD disclosure
|
Jun 27, 2023 | Jun 21, 2023 |
| 425 | Current report | Jun 20, 2023 | — |
| 8-K |
Current report
Material agreement, Bylaw or fiscal year change
|
Jun 20, 2023 | Jun 16, 2023 |
| 425 | Current report | Jun 14, 2023 | — |
| 8-K |
Current report
Material agreement, Bylaw or fiscal year change, Shareholder vote results
|
Jun 14, 2023 | Jun 13, 2023 |
| DEFA14A | Additional proxy material | Jun 2, 2023 | — |
| 8-K |
Current report
Other events
|
Jun 2, 2023 | Jun 2, 2023 |
| 10-Q | Quarterly report | May 22, 2023 | Mar 31, 2023 |
| DEF 14A | Proxy statement | May 16, 2023 | Jun 12, 2023 |
| NT 10-Q | Notification of late filing | May 15, 2023 | Mar 31, 2023 |
| PRE 14A | Preliminary proxy statement | May 4, 2023 | May 4, 2023 |
| 425 | Form 425 | Apr 25, 2023 | — |
| 425 | Form 425 | Apr 24, 2023 | — |
| 425 | Form 425 | Apr 21, 2023 | — |
| 425 | Form 425 | Apr 20, 2023 | — |
| 425 | Form 425 | Apr 20, 2023 | — |
| 425 | Form 425 | Apr 20, 2023 | — |
| 425 | Current report | Apr 20, 2023 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Apr 20, 2023 | Apr 19, 2023 |
| 10-K | Annual report | Mar 30, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Dec 21, 2022 | — |
| 8-K |
Current report
Other events
|
Dec 21, 2022 | Dec 20, 2022 |
| DEFA14A | Additional proxy material | Dec 16, 2022 | — |
| 8-K |
Current report
Other events
|
Dec 15, 2022 | Dec 15, 2022 |
| 8-K |
Current report
Officer or director change
|
Dec 9, 2022 | Dec 8, 2022 |
| DEF 14A | Proxy statement | Nov 23, 2022 | Dec 16, 2022 |
| PRE 14A | Preliminary proxy statement | Nov 16, 2022 | Nov 16, 2022 |
| 10-Q | Quarterly report | Nov 14, 2022 | Sep 30, 2022 |
| 10-Q | Quarterly report | Aug 12, 2022 | Jun 30, 2022 |
| 10-Q | Quarterly report | May 12, 2022 | Mar 31, 2022 |
| 10-K | Annual report | Mar 30, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Other events
|
Jan 27, 2022 | Jan 26, 2022 |
| 10-Q | Quarterly report | Jan 20, 2022 | Sep 30, 2021 |
| 8-K |
Current report
Unregistered share sale, Other events
|
Jan 4, 2022 | Dec 28, 2021 |
| 8-K |
Current report
Unregistered share sale, Other events
|
Dec 20, 2021 | Dec 14, 2021 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Bylaw or fiscal year change, Other events
|
Dec 15, 2021 | Dec 9, 2021 |
| 424B4 | Prospectus | Dec 13, 2021 | — |
| EFFECT | Filing | Dec 9, 2021 | — |
| CERT | Nyse certification | Dec 9, 2021 | — |
| 8-A12B | For registration of certain classes | Dec 8, 2021 | — |
| CORRESP | Letter to the SEC | Dec 7, 2021 | — |
| CORRESP | Letter to the SEC | Dec 7, 2021 | — |
| S-1/A | Amended registration statement | Dec 6, 2021 | — |
| S-1 | Registration statement | Nov 23, 2021 | — |
| UPLOAD | Letter from the SEC | Oct 26, 2021 | — |
| DRS | Filing | Oct 18, 2021 | — |
Showing 183 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Hazardous Waste Management (SIC 4955)
- Listed as
- ATEK (OTC), ATEKU (OTC), ATEKW (OTC)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- New York, NY
- SEC filer status
- , Emerging growth company
- SEC CIK
- 1882198
Other Hazardous Waste Management companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.