Onterris, Inc. SEC filings ONT
Onterris, Inc. has 382 filings in SEC EDGAR's recent list, going back to Jun 8, 2015. Its latest annual report, Form ARS, was filed on Mar 24, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026 (results of operations, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 5, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 4, 2026 | Nov 4, 2026 |
| 8-K |
Current report
Officer or director change
|
Oct 8, 2026 | Oct 7, 2026 |
| CERT | Nyse certification | Aug 11, 2026 | — |
| 8-A12B/A | Filing | Aug 10, 2026 | — |
| 8-K/A |
Amended current report
Material agreement, Change to shareholder rights, Bylaw or fiscal year change
|
Aug 10, 2026 | Aug 5, 2026 |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-A12B | Filing | Aug 5, 2026 | — |
| 8-K |
Current report
Material agreement, Change to shareholder rights, Bylaw or fiscal year change, Other events
|
Aug 5, 2026 | Aug 5, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 5, 2026 | Aug 5, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 11, 2026 | May 6, 2026 |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 6, 2026 | May 6, 2026 |
| 8-K |
Current report
Bylaw or fiscal year change, Regulation FD disclosure
|
Apr 21, 2026 | Apr 17, 2026 |
| ARS | Annual report to shareholders | Mar 24, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Mar 24, 2026 | — |
| DEF 14A | Proxy statement | Mar 24, 2026 | May 6, 2026 |
| S-8 | Employee stock plan registration | Feb 26, 2026 | — |
| 10-K | Annual report | Feb 26, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 25, 2026 | Feb 25, 2026 |
| 8-K |
Current report
Officer or director change
|
Jan 20, 2026 | Jan 19, 2026 |
| 10-Q | Quarterly report | Nov 5, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 4, 2025 | Nov 4, 2025 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 6, 2025 | Aug 6, 2025 |
| 8-K |
Current report
Other events
|
Jul 7, 2025 | Jul 1, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
May 9, 2025 | May 6, 2025 |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure, Other events
|
May 7, 2025 | May 7, 2025 |
| ARS | Annual report to shareholders | Mar 24, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Mar 24, 2025 | — |
| DEF 14A | Proxy statement | Mar 24, 2025 | May 6, 2025 |
| PRE 14A | Preliminary proxy statement | Mar 7, 2025 | May 6, 2025 |
| S-8 | Employee stock plan registration | Mar 3, 2025 | — |
| 10-K | Annual report | Mar 3, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 26, 2025 | Feb 26, 2025 |
| 8-K |
Current report
Officer or director change
|
Feb 20, 2025 | Feb 19, 2025 |
| 8-K | Current report | Jan 17, 2025 | Jan 13, 2025 |
| 8-K |
Current report
Officer or director change
|
Jan 6, 2025 | Dec 31, 2024 |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations, Officer or director change, Regulation FD disclosure
|
Nov 6, 2024 | Nov 6, 2024 |
| 10-Q | Quarterly report | Aug 7, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 6, 2024 | Aug 6, 2024 |
| UPLOAD | Letter from the SEC | Jun 10, 2024 | — |
| CORRESP | Letter to the SEC | May 16, 2024 | — |
| 8-K |
Current report
Bylaw or fiscal year change
|
May 14, 2024 | May 13, 2024 |
| 8-K |
Current report
Shareholder vote results
|
May 8, 2024 | May 7, 2024 |
| 10-Q | Quarterly report | May 8, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 7, 2024 | May 7, 2024 |
| UPLOAD | Letter from the SEC | May 6, 2024 | — |
| DEFA14A | Additional proxy material | Apr 22, 2024 | — |
| 8-K |
Current report
Other events
|
Apr 19, 2024 | Apr 17, 2024 |
| 424B5 | Prospectus supplement | Apr 19, 2024 | — |
| 424B5 | Prospectus supplement | Apr 16, 2024 | — |
| S-3ASR | Automatic shelf registration | Apr 16, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 2, 2024 | Apr 2, 2024 |
| ARS | Annual report to shareholders | Mar 25, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Mar 25, 2024 | — |
| DEF 14A | Proxy statement | Mar 25, 2024 | May 7, 2024 |
| PRE 14A | Preliminary proxy statement | Mar 11, 2024 | May 7, 2024 |
| S-8 | Employee stock plan registration | Feb 29, 2024 | — |
| 10-K | Annual report | Feb 29, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 29, 2024 | Feb 29, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Feb 20, 2024 | Feb 14, 2024 |
| 10-Q | Quarterly report | Nov 8, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 7, 2023 | Nov 7, 2023 |
| 10-Q | Quarterly report | Aug 9, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 8, 2023 | Aug 8, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 6, 2023 | Jun 6, 2023 |
| 8-K |
Current report
Shareholder vote results
|
May 11, 2023 | May 9, 2023 |
| 10-Q | Quarterly report | May 10, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 9, 2023 | May 9, 2023 |
| ARS | Annual report to shareholders | Mar 28, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Mar 28, 2023 | — |
| DEF 14A | Proxy statement | Mar 28, 2023 | — |
| S-8 | Employee stock plan registration | Mar 1, 2023 | — |
| 10-K | Annual report | Mar 1, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 28, 2023 | Feb 28, 2023 |
| 10-Q | Quarterly report | Nov 9, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 8, 2022 | Nov 8, 2022 |
| 10-Q | Quarterly report | Aug 9, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 8, 2022 | Aug 8, 2022 |
| UPLOAD | Letter from the SEC | Jun 16, 2022 | — |
| CORRESP | Letter to the SEC | Jun 16, 2022 | — |
| 8-K |
Current report
Other events
|
Jun 14, 2022 | Jun 14, 2022 |
| 8-K |
Current report
Officer or director change
|
Jun 8, 2022 | Jun 2, 2022 |
| CORRESP | Letter to the SEC | May 31, 2022 | — |
| UPLOAD | Letter from the SEC | May 18, 2022 | — |
| CORRESP | Letter to the SEC | May 11, 2022 | — |
| 8-K |
Current report
Shareholder vote results
|
May 11, 2022 | May 10, 2022 |
| 10-Q | Quarterly report | May 10, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 9, 2022 | May 9, 2022 |
| UPLOAD | Letter from the SEC | Apr 28, 2022 | — |
| DEFA14A | Additional proxy material | Mar 29, 2022 | — |
| DEF 14A | Proxy statement | Mar 29, 2022 | May 10, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 28, 2022 | Mar 28, 2022 |
| S-8 | Employee stock plan registration | Mar 1, 2022 | — |
| 10-K | Annual report | Mar 1, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 28, 2022 | Feb 28, 2022 |
| 8-K |
Current report
Officer or director change
|
Dec 21, 2021 | Dec 16, 2021 |
| 10-Q | Quarterly report | Nov 10, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 9, 2021 | Nov 9, 2021 |
| 8-K |
Current report
Officer or director change
|
Oct 25, 2021 | Oct 19, 2021 |
| 8-K |
Current report
Other events
|
Sep 30, 2021 | Sep 28, 2021 |
| 424B5 | Prospectus supplement | Sep 30, 2021 | — |
| 424B5 | Prospectus supplement | Sep 27, 2021 | — |
| EFFECT | Filing | Aug 20, 2021 | — |
| 424B3 | Prospectus | Aug 20, 2021 | — |
| CORRESP | Letter to the SEC | Aug 18, 2021 | — |
| UPLOAD | Letter from the SEC | Aug 18, 2021 | — |
| S-3 | Shelf registration | Aug 11, 2021 | — |
| S-3ASR | Automatic shelf registration | Aug 11, 2021 | — |
| 10-Q | Quarterly report | Aug 11, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 10, 2021 | Aug 10, 2021 |
| 8-K |
Current report
Shareholder vote results
|
May 17, 2021 | May 13, 2021 |
| 10-Q | Quarterly report | May 12, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 12, 2021 | May 12, 2021 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Apr 29, 2021 | Apr 27, 2021 |
| 8-K |
Current report
Unregistered share sale
|
Apr 1, 2021 | Apr 1, 2021 |
| DEFA14A | Additional proxy material | Apr 1, 2021 | — |
| DEF 14A | Proxy statement | Apr 1, 2021 | May 13, 2021 |
| S-8 | Employee stock plan registration | Mar 26, 2021 | — |
| 10-K | Annual report | Mar 24, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 24, 2021 | Mar 24, 2021 |
| 8-K |
Current report
Other events
|
Mar 8, 2021 | Mar 8, 2021 |
| 8-K |
Current report
Other events
|
Jan 11, 2021 | Jan 11, 2021 |
| 424B4 | Prospectus | Nov 25, 2020 | — |
| EFFECT | Filing | Nov 24, 2020 | — |
| CORRESP | Letter to the SEC | Nov 23, 2020 | — |
| CORRESP | Letter to the SEC | Nov 23, 2020 | — |
| S-1 | Registration statement | Nov 23, 2020 | — |
| UPLOAD | Letter from the SEC | Nov 19, 2020 | — |
| DRS | Filing | Nov 13, 2020 | — |
| 10-Q | Quarterly report | Nov 12, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 12, 2020 | Nov 12, 2020 |
| 8-K |
Current report
Other events
|
Oct 7, 2020 | Oct 6, 2020 |
| S-8 | Employee stock plan registration | Sep 1, 2020 | — |
| 10-Q | Quarterly report | Aug 31, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 31, 2020 | Aug 31, 2020 |
| 8-K |
Current report
Unregistered share sale, Other events
|
Jul 30, 2020 | Jul 27, 2020 |
| 424B4 | Prospectus | Jul 23, 2020 | — |
| EFFECT | Filing | Jul 22, 2020 | — |
| CORRESP | Letter to the SEC | Jul 20, 2020 | — |
| CORRESP | Letter to the SEC | Jul 20, 2020 | — |
| CORRESP | Letter to the SEC | Jul 20, 2020 | — |
| CERT | Nyse certification | Jul 20, 2020 | — |
| S-1/A | Amended registration statement | Jul 20, 2020 | — |
| 8-A12B | Filing | Jul 17, 2020 | — |
| UPLOAD | Letter from the SEC | Jul 14, 2020 | — |
| S-1/A | Amended registration statement | Jul 14, 2020 | — |
| CORRESP | Letter to the SEC | Jul 14, 2020 | — |
| CORRESP | Letter to the SEC | Jul 13, 2020 | — |
| S-1 | Registration statement | Jun 29, 2020 | — |
| DRS/A | Filing | Jun 3, 2020 | — |
| DRSLTR | Filing | Dec 20, 2019 | — |
| DRS/A | Filing | Dec 20, 2019 | — |
| UPLOAD | Letter from the SEC | Dec 13, 2019 | — |
| DRS | Filing | Nov 15, 2019 | — |
| D/A | Filing | Jun 10, 2015 | — |
| D | Filing | Jun 8, 2015 | — |
Showing 160 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
- Services-Management Consulting Services (SIC 8742)
- Listed as
- ONT (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Irvine, CA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1643615
- Former names
- Montrose Environmental Group, Inc. (until Apr 21, 2026)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.