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 |
|---|---|---|---|
| SCHEDULE 13G | Ownership over 5% (passive) | Sep 8, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 14, 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 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 11, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 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 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 13, 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 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 24, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 30, 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 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 9, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 4, 2025 | — |
| 4 | Insider transaction | Mar 12, 2025 | Mar 11, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 6, 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 | — |
| 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 | — |
| 4 | Insider transaction | Aug 21, 2024 | May 6, 2024 |
| 4 | Insider transaction | May 15, 2024 | May 13, 2024 |
| 4 | Insider transaction | May 9, 2024 | May 6, 2024 |
| 144 | Notice of proposed sale | May 6, 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 |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 10, 2023 | — |
| 4 | Insider transaction | Sep 13, 2023 | Sep 12, 2023 |
| 4 | Insider transaction | May 16, 2023 | May 12, 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 |
| 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 |
| 4 | Insider transaction | May 17, 2022 | May 17, 2022 |
| 4 | Insider transaction | May 16, 2022 | May 12, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Apr 8, 2022 | — |
| 4/A | Form 4/a submission | Mar 29, 2022 | Oct 15, 2021 |
| 4 | Insider transaction | Mar 21, 2022 | Dec 23, 2021 |
| 4 | Insider transaction | Mar 4, 2022 | Feb 28, 2022 |
| 4 | Insider transaction | Mar 3, 2022 | Feb 28, 2022 |
| 4 | Insider transaction | Mar 3, 2022 | Feb 28, 2022 |
| 4 | Insider transaction | Mar 3, 2022 | Feb 28, 2022 |
| 4 | Insider transaction | Mar 3, 2022 | Feb 28, 2022 |
| 4 | Insider transaction | Mar 3, 2022 | Mar 3, 2022 |
| 5 | Annual insider ownership | Feb 15, 2022 | Dec 31, 2021 |
| 5 | Annual insider ownership | Feb 14, 2022 | Dec 31, 2021 |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 11, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 4, 2022 | — |
| 4 | Insider transaction | Jan 3, 2022 | Jan 1, 2022 |
| 4 | Insider transaction | Jan 3, 2022 | Jan 1, 2022 |
| 4 | Insider transaction | Jan 3, 2022 | Jan 1, 2022 |
| 4 | Insider transaction | Jan 3, 2022 | Jan 1, 2022 |
| 4 | Insider transaction | Jan 3, 2022 | Jan 1, 2022 |
| 4 | Insider transaction | Jan 3, 2022 | Jan 1, 2022 |
| 4 | Insider transaction | Jan 3, 2022 | Jan 1, 2022 |
| 4 | Insider transaction | Dec 20, 2021 | Dec 16, 2021 |
| 4 | Insider transaction | Dec 20, 2021 | Dec 16, 2021 |
| 4 | Insider transaction | Dec 20, 2021 | Dec 16, 2021 |
| 4 | Insider transaction | Dec 20, 2021 | Dec 16, 2021 |
| 4 | Insider transaction | Dec 20, 2021 | Nov 4, 2021 |
| 4 | Insider transaction | Dec 13, 2021 | Dec 13, 2021 |
| 4 | Insider transaction | Dec 6, 2021 | Dec 6, 2019 |
| 4 | Insider transaction | Dec 2, 2021 | Nov 30, 2021 |
| 4 | Insider transaction | Nov 12, 2021 | Nov 9, 2021 |
| 4 | Insider transaction | Nov 9, 2021 | Nov 5, 2021 |
| 4 | Insider transaction | Nov 4, 2021 | Nov 2, 2021 |
| 4 | Insider transaction | Nov 1, 2021 | Oct 28, 2021 |
| 4 | Insider transaction | Oct 27, 2021 | Oct 25, 2021 |
| 4 | Insider transaction | Oct 22, 2021 | Oct 20, 2021 |
| 4 | Insider transaction | Oct 21, 2021 | Oct 19, 2021 |
| 3 | Initial insider ownership | Oct 21, 2021 | Oct 19, 2021 |
| 4 | Insider transaction | Oct 19, 2021 | Oct 15, 2021 |
| SC 13G | Ownership over 5% (passive) | Oct 8, 2021 | — |
| 4 | Insider transaction | Sep 28, 2021 | Sep 27, 2021 |
| 4 | Insider transaction | Sep 24, 2021 | Sep 24, 2021 |
| 4 | Insider transaction | Sep 24, 2021 | Sep 23, 2021 |
| 4 | Insider transaction | Sep 23, 2021 | Sep 21, 2021 |
| 4 | Insider transaction | Sep 23, 2021 | Sep 21, 2021 |
| 4 | Insider transaction | Sep 23, 2021 | Sep 21, 2021 |
| 4 | Insider transaction | Sep 17, 2021 | Sep 16, 2021 |
| 4 | Insider transaction | Sep 17, 2021 | Sep 16, 2021 |
| 4 | Insider transaction | Sep 17, 2021 | Sep 15, 2021 |
| 4 | Insider transaction | Sep 17, 2021 | Sep 15, 2021 |
| 4 | Insider transaction | Sep 13, 2021 | Sep 10, 2021 |
| 4 | Insider transaction | Sep 13, 2021 | Sep 9, 2021 |
| 4 | Insider transaction | Aug 23, 2021 | Aug 19, 2021 |
| 4 | Insider transaction | Aug 19, 2021 | Aug 17, 2021 |
| 4 | Insider transaction | Aug 4, 2021 | Aug 2, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jun 30, 2021 |
| 4 | Insider transaction | Jun 28, 2021 | Jun 24, 2021 |
| 4 | Insider transaction | May 19, 2021 | May 17, 2021 |
| 4 | Insider transaction | Apr 1, 2021 | Mar 30, 2021 |
| 4 | Insider transaction | Mar 31, 2021 | Mar 29, 2021 |
| 4 | Insider transaction | Mar 19, 2021 | Mar 18, 2021 |
| 4 | Insider transaction | Mar 19, 2021 | Mar 18, 2021 |
| 4 | Insider transaction | Mar 19, 2021 | Mar 18, 2021 |
| 4 | Insider transaction | Mar 19, 2021 | Mar 18, 2021 |
| 4 | Insider transaction | Mar 19, 2021 | Mar 18, 2021 |
| 4 | Insider transaction | Feb 25, 2021 | Feb 23, 2021 |
| SC 13G | Ownership over 5% (passive) | Feb 8, 2021 | — |
| 4 | Insider transaction | Jan 12, 2021 | Jan 1, 2021 |
| 4 | Insider transaction | Jan 8, 2021 | Jan 1, 2021 |
| 4 | Insider transaction | Jan 8, 2021 | Jan 1, 2021 |
| 4 | Insider transaction | Jan 8, 2021 | Jan 1, 2021 |
| 4 | Insider transaction | Jan 8, 2021 | Jan 1, 2021 |
| 4 | Insider transaction | Jan 8, 2021 | Jan 1, 2021 |
| 4 | Insider transaction | Jan 8, 2021 | Jan 1, 2021 |
| 4 | Insider transaction | Jan 8, 2021 | Jan 1, 2021 |
| 4 | Insider transaction | Jan 8, 2021 | Jan 1, 2021 |
| 4 | Insider transaction | Jan 8, 2021 | Jan 1, 2021 |
| 4 | Insider transaction | Jan 8, 2021 | Jan 1, 2021 |
| 4 | Insider transaction | Dec 23, 2020 | Dec 22, 2020 |
| 4 | Insider transaction | Dec 17, 2020 | Dec 14, 2020 |
| 4 | Insider transaction | Dec 2, 2020 | Nov 30, 2020 |
| 4 | Insider transaction | Dec 2, 2020 | Nov 30, 2020 |
| 4 | Insider transaction | Dec 1, 2020 | Nov 30, 2020 |
| 4 | Insider transaction | Dec 1, 2020 | Nov 30, 2020 |
| 4 | Insider transaction | Dec 1, 2020 | Nov 30, 2020 |
| 3 | Initial insider ownership | Aug 6, 2020 | Jul 27, 2020 |
| 3 | Initial insider ownership | Aug 6, 2020 | Jul 27, 2020 |
| 4 | Insider transaction | Jul 29, 2020 | Jul 27, 2020 |
| 4 | Insider transaction | Jul 29, 2020 | Jul 27, 2020 |
| 4 | Insider transaction | Jul 29, 2020 | Jul 27, 2020 |
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.
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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.