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 |
| SCHEDULE 13G | Ownership over 5% (passive) | Sep 8, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 14, 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 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 5, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | May 12, 2026 | May 11, 2026 |
| 4 | Insider transaction | May 12, 2026 | May 11, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 11, 2026 | May 6, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 11, 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 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 |
| 4 | Insider transaction | Mar 16, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 16, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 13, 2026 | Mar 11, 2026 |
| 144 | Notice of proposed sale | Mar 13, 2026 | — |
| 3 | Initial insider ownership | Mar 12, 2026 | Jan 19, 2026 |
| 4/A | Filing | Mar 11, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Mar 9, 2026 |
| 144 | Notice of proposed sale | Mar 9, 2026 | — |
| 4 | Insider transaction | Mar 5, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 144 | Notice of proposed sale | Mar 4, 2026 | — |
| 144 | Notice of proposed sale | Mar 3, 2026 | — |
| 144 | Notice of proposed sale | Mar 3, 2026 | — |
| 144 | Notice of proposed sale | Mar 2, 2026 | — |
| 144 | Notice of proposed sale | Mar 2, 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 13, 2026 | — |
| 8-K |
Current report
Officer or director change
|
Jan 20, 2026 | Jan 19, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Dec 19, 2025 | Dec 16, 2025 |
| 4 | Insider transaction | Dec 19, 2025 | Dec 16, 2025 |
| 4 | Insider transaction | Dec 19, 2025 | Dec 16, 2025 |
| 4 | Insider transaction | Dec 19, 2025 | Dec 16, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| 4 | Insider transaction | Nov 12, 2025 | Nov 10, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 12, 2025 | — |
| 144 | Notice of proposed sale | Nov 12, 2025 | — |
| 144 | Notice of proposed sale | Nov 10, 2025 | — |
| 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 24, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 30, 2025 | — |
| 8-K |
Current report
Other events
|
Jul 7, 2025 | Jul 1, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| 4/A | Filing | May 14, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 13, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
May 9, 2025 | May 6, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 9, 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 4, 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 |
| 4 | Insider transaction | Mar 12, 2025 | Mar 11, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 13, 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 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| SC 13G | Ownership over 5% (passive) | Dec 17, 2024 | — |
| 4 | Insider transaction | Nov 25, 2024 | Nov 21, 2024 |
| SC 13G | Ownership over 5% (passive) | Nov 14, 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 |
| 4 | Insider transaction | Aug 21, 2024 | May 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 | — |
| 4 | Insider transaction | May 15, 2024 | May 13, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change
|
May 14, 2024 | May 13, 2024 |
| 4 | Insider transaction | May 9, 2024 | May 6, 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 |
| 144 | Notice of proposed sale | May 6, 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 |
| SC 13G | Ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 25, 2024 | — |
| 4 | Insider transaction | Jan 2, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 2, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 2, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 2, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 2, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 2, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 2, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Nov 13, 2023 | Nov 10, 2023 |
| 4 | Insider transaction | Nov 13, 2023 | Nov 10, 2023 |
| 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 |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 10, 2023 | — |
| 4 | Insider transaction | Sep 13, 2023 | Sep 12, 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 |
| 4 | Insider transaction | May 16, 2023 | May 12, 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 | — |
| 4 | Insider transaction | Mar 7, 2023 | Mar 3, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 3, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 3, 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 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2023 | — |
| 4 | Insider transaction | Feb 3, 2023 | Feb 2, 2023 |
| 4 | Insider transaction | Feb 1, 2023 | Jan 30, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 31, 2023 | — |
| 4 | Insider transaction | Jan 27, 2023 | Jan 25, 2023 |
| 4 | Insider transaction | Jan 24, 2023 | Jan 23, 2023 |
| 4 | Insider transaction | Jan 20, 2023 | Jan 18, 2023 |
| 4 | Insider transaction | Jan 17, 2023 | Jan 13, 2023 |
| 4 | Insider transaction | Jan 3, 2023 | Jan 1, 2023 |
| 4 | Insider transaction | Jan 3, 2023 | Jan 1, 2023 |
| 4 | Insider transaction | Jan 3, 2023 | Jan 1, 2023 |
| 4 | Insider transaction | Jan 3, 2023 | Jan 1, 2023 |
| 4 | Insider transaction | Jan 3, 2023 | Jan 1, 2023 |
| 4 | Insider transaction | Jan 3, 2023 | Jan 1, 2023 |
| 4 | Insider transaction | Jan 3, 2023 | Jan 1, 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 | — |
| 4 | Insider transaction | May 17, 2022 | May 17, 2022 |
| 4 | Insider transaction | May 16, 2022 | May 12, 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 |
Showing 200 filings, the most recent 200. 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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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)
Other Services-Management Consulting Services companies
- Cgi Inc GIB
- Booz Allen Hamilton Holding Corp BAH
- Genpact LTD G
- Fti Consulting, Inc FCN
- Exponent Inc EXPO
- Huron Consulting Group Inc. HURN
- Astrana Health, Inc. ASTH
- ICF International, Inc. ICFI
Source: SEC EDGAR filings. This is company-reported data, not investment advice.