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Onterris, Inc.(MEG US)

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Overview

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Documents

SEC Filings
CategorizedChronologicalBy Owner

Financials & Metrics

FinancialsChartingShort InterestEmployees
Logo
  • Home
  • AI Agent
  • Annotations
  • Files
  • Pricing and plans
  • BlogAboutContact us
    APIMCP
    Terms of servicePrivacy policy

  • Get the full experience

    We save the real magic for signed-in users.

HomeStock ScreenerDocument SearchChartingWatchlistsRecent Filings

Onterris, Inc.(MEG US)

Doc SearchProfileEntity StructureFinancialsChartingShort InterestEmployees

Overview

ProfileEntity Structure

Documents

SEC Filings
CategorizedChronologicalBy Owner

Financials & Metrics

FinancialsChartingShort InterestEmployees
MEG US​
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MEG US​
Ask AI

SEC Filings by Owner

SEC Filings by Owner

Insider Ownership

PERLMAN RICHARD E(22)

  • Form 4Statement of changes in beneficial ownership16 Mar
  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4Statement of changes in beneficial ownership3 Jan 2025
  • Form 4Statement of changes in beneficial ownership2 Jan 2024
  • Form 4Statement of changes in beneficial ownership21 Feb 2023
  • Form 4Statement of changes in beneficial ownership3 Feb 2023
  • Form 4Statement of changes in beneficial ownership1 Feb 2023
  • Form 4Statement of changes in beneficial ownership27 Jan 2023
  • Form 4Statement of changes in beneficial ownership24 Jan 2023
  • Form 4Statement of changes in beneficial ownership20 Jan 2023

Afsari Nasym(19)

  • Form 4Statement of changes in beneficial ownership4 Mar
  • Form 4Statement of changes in beneficial ownership19 Dec 2025
  • Form 4Statement of changes in beneficial ownership3 Mar 2022
  • Form 4Statement of changes in beneficial ownership20 Dec 2021
  • Form 4Statement of changes in beneficial ownership12 Nov 2021
  • Form 4Statement of changes in beneficial ownership9 Nov 2021
  • Form 4Statement of changes in beneficial ownership23 Sep 2021
  • Form 4Statement of changes in beneficial ownership17 Sep 2021
  • Form 4Statement of changes in beneficial ownership13 Sep 2021
  • Form 4Statement of changes in beneficial ownership4 Aug 2021

Dicks Allan(18)

  • Form 4Statement of changes in beneficial ownership12 May
  • Form 4Statement of changes in beneficial ownership19 Dec 2025
  • Form 4Statement of changes in beneficial ownership15 May 2024
  • Form 4Statement of changes in beneficial ownership13 Nov 2023
  • Form 4Statement of changes in beneficial ownership3 Mar 2022
  • Form 4Statement of changes in beneficial ownership21 Mar 2022
  • Form 4Statement of changes in beneficial ownership20 Dec 2021
  • Form 4Statement of changes in beneficial ownership2 Dec 2021
  • Form 4Statement of changes in beneficial ownership24 Sep 2021
  • Form 4Statement of changes in beneficial ownership23 Sep 2021

Manthripragada Vijay(17)

  • Form 4Statement of changes in beneficial ownership16 Mar
  • Form 4Statement of changes in beneficial ownership19 Dec 2025
  • Form 4Statement of changes in beneficial ownership12 Nov 2025
  • Form 4Statement of changes in beneficial ownership9 May 2024
  • Form 4Statement of changes in beneficial ownership3 Mar 2022
  • Form 4Statement of changes in beneficial ownership20 Dec 2021
  • Form 4Statement of changes in beneficial ownership4 Nov 2021
  • Form 4Statement of changes in beneficial ownership1 Nov 2021
  • Form 4Statement of changes in beneficial ownership28 Sep 2021
  • Form 4Statement of changes in beneficial ownership24 Sep 2021

PRICE JAMES K(14)

  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4Statement of changes in beneficial ownership3 Jan 2025
  • Form 4Statement of changes in beneficial ownership2 Jan 2024
  • Form 4Statement of changes in beneficial ownership7 Mar 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership16 May 2022
  • Form 4Statement of changes in beneficial ownership3 Mar 2022
  • Form 4Statement of changes in beneficial ownership3 Jan 2022
  • Form 5Annual statement of beneficial ownership14 Feb 2022

Revuelta Jose(13)

  • Form 4Statement of changes in beneficial ownership12 May
  • Form 4Statement of changes in beneficial ownership11 Mar
  • Form 4Statement of changes in beneficial ownership5 Mar
  • Form 4/AStatement of changes in beneficial ownership (amendment)11 Mar
  • Form 4Statement of changes in beneficial ownership19 Dec 2025
  • Form 4Statement of changes in beneficial ownership21 Aug 2024
  • Form 4Statement of changes in beneficial ownership4 Mar 2022
  • Form 4Statement of changes in beneficial ownership20 Dec 2021
  • Form 4Statement of changes in beneficial ownership19 Mar 2021
  • Form 4Statement of changes in beneficial ownership8 Jan 2021

PRESBY J THOMAS(12)

  • Form 4Statement of changes in beneficial ownership4 Mar
  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4Statement of changes in beneficial ownership3 Jan 2025
  • Form 4Statement of changes in beneficial ownership25 Nov 2024
  • Form 4Statement of changes in beneficial ownership2 Jan 2024
  • Form 4Statement of changes in beneficial ownership7 Mar 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2022
  • Form 4Statement of changes in beneficial ownership19 May 2021
  • Form 4Statement of changes in beneficial ownership12 Jan 2021

Fernandez De Castro Jose Miguel(12)

  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4/AStatement of changes in beneficial ownership (amendment)14 May 2025
  • Form 4Statement of changes in beneficial ownership7 Mar 2025
  • Form 4Statement of changes in beneficial ownership3 Jan 2025
  • Form 4Statement of changes in beneficial ownership2 Jan 2024
  • Form 4Statement of changes in beneficial ownership13 Sep 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2022
  • Form 4Statement of changes in beneficial ownership17 Sep 2021
  • Form 4Statement of changes in beneficial ownership8 Jan 2021

Field Janet Risi(11)

  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4Statement of changes in beneficial ownership3 Jan 2025
  • Form 4Statement of changes in beneficial ownership2 Jan 2024
  • Form 4Statement of changes in beneficial ownership13 Nov 2023
  • Form 4Statement of changes in beneficial ownership16 May 2023
  • Form 4Statement of changes in beneficial ownership7 Mar 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2022
  • Form 4Statement of changes in beneficial ownership13 Dec 2021
  • Form 3Initial statement of beneficial ownership21 Oct 2021

GRAHAM PETER(10)

  • Form 4Statement of changes in beneficial ownership8 Jun
  • Form 4Statement of changes in beneficial ownership5 Jun
  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4Statement of changes in beneficial ownership3 Jan 2025
  • Form 4Statement of changes in beneficial ownership2 Jan 2024
  • Form 4Statement of changes in beneficial ownership3 Jan 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2022
  • Form 4Statement of changes in beneficial ownership8 Jan 2021
  • Form 4Statement of changes in beneficial ownership29 Jul 2020
  • Form 3Initial statement of beneficial ownership22 Jul 2020

LeMaire Joshua W.(9)

  • Form 4Statement of changes in beneficial ownership3 Mar 2022
  • Form 4Statement of changes in beneficial ownership20 Dec 2021
  • Form 4Statement of changes in beneficial ownership23 Sep 2021
  • Form 4Statement of changes in beneficial ownership17 Sep 2021
  • Form 4Statement of changes in beneficial ownership19 Aug 2021
  • Form 4Statement of changes in beneficial ownership19 Mar 2021
  • Form 4Statement of changes in beneficial ownership8 Jan 2021
  • Form 3Initial statement of beneficial ownership22 Jul 2020
  • Form 4Statement of changes in beneficial ownership24 Jul 2020

Newmark Robin(8)

  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4Statement of changes in beneficial ownership3 Jan 2025
  • Form 4Statement of changes in beneficial ownership2 Jan 2024
  • Form 4Statement of changes in beneficial ownership3 Jan 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2022
  • Form 4Statement of changes in beneficial ownership8 Jan 2021
  • Form 4Statement of changes in beneficial ownership29 Jul 2020
  • Form 3Initial statement of beneficial ownership22 Jul 2020

Colman Vincent(3)

  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4Statement of changes in beneficial ownership14 May 2025
  • Form 4Statement of changes in beneficial ownership12 Mar 2025

OAKTREE CAPITAL MANAGEMENT LP(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

BROOKFIELD ASSET MANAGEMENT INC.(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

OAKTREE FUND GP I, L.P.(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

Oaktree Holdings, Ltd.(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

Oaktree Capital Group, LLC(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

Oaktree Capital I, L.P.(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

OCM HOLDINGS I, LLC(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

OAKTREE HOLDINGS, LLC(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

OCM FIE, LLC(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

Oaktree Fund GP, LLC(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

Partners Ltd(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

OCM Montrose II Holdings, L.P.(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

OCM Montrose Holdings, L.P.(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

Laws James(2)

  • Form 4Statement of changes in beneficial ownership13 Mar
  • Form 3Initial statement of beneficial ownership12 Mar

Jonna Peter Joseph(1)

  • Form 3Initial statement of beneficial ownership22 Jul 2020

Hinchman Brook(1)

  • Form 3Initial statement of beneficial ownership22 Jul 2020

≥5% Ownership

ALGER ASSOCIATES INC(7)

  • SC 13G/AMontrose Environmental Group, Inc.14 Feb 2025
  • SC 13GMontrose Environmental Group, Inc.14 Nov 2024
  • SC 13G/AMontrose Environmental Group, Inc.10 Oct 2023
  • SC 13G/AMontrose Environmental Group, Inc.14 Feb 2023
  • SC 13G/AMontrose Environmental Group, Inc.8 Apr 2022
  • SC 13G/AMontrose Environmental Group, Inc.14 Feb 2022
  • SC 13GMontrose Environmental Group, Inc.8 Oct 2021

UBS AM, A Distinct Business Unit Of UBS ASSET MANAGEMENT AMERICAS LLC(4)

  • SC 13G/AMontrose Environmental Group, Inc.24 Oct 2025
  • SC 13G/AMontrose Environmental Group, Inc.13 Feb 2024
  • SC 13G/AMontrose Environmental Group, Inc.13 Feb 2023
  • SC 13GMontrose Environmental Group, Inc.14 Feb 2022

FMR LLC(3)

  • SC 13GOnterris, Inc.8 Sep
  • SC 13G/AMontrose Environmental Group, Inc.9 Feb 2022
  • SC 13GMontrose Environmental Group, Inc.8 Feb 2021

BAMCO INC /NY/(3)

  • SC 13G/AMontrose Environmental Group, Inc.14 Nov 2025
  • SC 13G/AMontrose Environmental Group, Inc.15 May 2025
  • SC 13GMontrose Environmental Group, Inc.14 Feb 2025

BlackRock Inc.(3)

  • SC 13G/AMontrose Environmental Group, Inc.25 Jan 2024
  • SC 13G/AMontrose Environmental Group, Inc.31 Jan 2023
  • SC 13GMontrose Environmental Group, Inc.4 Feb 2022

MANAGED ACCOUNT ADVISORS LLC(3)

  • SC 13G/AMontrose Environmental Group, Inc.14 Aug 2025
  • SC 13G/AMontrose Environmental Group, Inc.4 Apr 2025
  • SC 13GMontrose Environmental Group, Inc.13 Feb 2025

Capital Research Global Investors(3)

  • SC 13G/AMontrose Environmental Group, Inc.9 Feb 2024
  • SC 13G/AMontrose Environmental Group, Inc.13 Feb 2023
  • SC 13GMontrose Environmental Group, Inc.11 Feb 2022

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC(3)

  • SC 13G/AMontrose Environmental Group, Inc.12 Nov 2025
  • SC 13G/AMontrose Environmental Group, Inc.30 Jul 2025
  • SC 13GMontrose Environmental Group, Inc.9 May 2025

VANGUARD GROUP INC(2)

  • SC 13G/AMontrose Environmental Group, Inc.27 Mar
  • SC 13GMontrose Environmental Group, Inc.13 Feb 2024

GOLDMAN SACHS ASSET MANAGEMENT, L.P.(2)

  • SC 13G/AOnterris, Inc.9 Nov
  • SC 13GOnterris, Inc.11 May

MACQUARIE GROUP LTD(2)

  • SC 13G/AMontrose Environmental Group, Inc.13 Feb
  • SC 13G/AMontrose Environmental Group, Inc.15 May 2025

NOMURA ASSET MANAGEMENT INTERNATIONAL INC.(1)

  • SC 13GOnterris, Inc.14 Aug

MILLENNIUM MANAGEMENT LLC(1)

  • SC 13GMontrose Environmental Group, Inc.17 Dec 2024

Insider Ownership

PERLMAN RICHARD E(22)

  • Form 4Statement of changes in beneficial ownership16 Mar
  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4Statement of changes in beneficial ownership3 Jan 2025
  • Form 4Statement of changes in beneficial ownership2 Jan 2024
  • Form 4Statement of changes in beneficial ownership21 Feb 2023
  • Form 4Statement of changes in beneficial ownership3 Feb 2023
  • Form 4Statement of changes in beneficial ownership1 Feb 2023
  • Form 4Statement of changes in beneficial ownership27 Jan 2023
  • Form 4Statement of changes in beneficial ownership24 Jan 2023
  • Form 4Statement of changes in beneficial ownership20 Jan 2023

Afsari Nasym(19)

  • Form 4Statement of changes in beneficial ownership4 Mar
  • Form 4Statement of changes in beneficial ownership19 Dec 2025
  • Form 4Statement of changes in beneficial ownership3 Mar 2022
  • Form 4Statement of changes in beneficial ownership20 Dec 2021
  • Form 4Statement of changes in beneficial ownership12 Nov 2021
  • Form 4Statement of changes in beneficial ownership9 Nov 2021
  • Form 4Statement of changes in beneficial ownership23 Sep 2021
  • Form 4Statement of changes in beneficial ownership17 Sep 2021
  • Form 4Statement of changes in beneficial ownership13 Sep 2021
  • Form 4Statement of changes in beneficial ownership4 Aug 2021

Dicks Allan(18)

  • Form 4Statement of changes in beneficial ownership12 May
  • Form 4Statement of changes in beneficial ownership19 Dec 2025
  • Form 4Statement of changes in beneficial ownership15 May 2024
  • Form 4Statement of changes in beneficial ownership13 Nov 2023
  • Form 4Statement of changes in beneficial ownership3 Mar 2022
  • Form 4Statement of changes in beneficial ownership21 Mar 2022
  • Form 4Statement of changes in beneficial ownership20 Dec 2021
  • Form 4Statement of changes in beneficial ownership2 Dec 2021
  • Form 4Statement of changes in beneficial ownership24 Sep 2021
  • Form 4Statement of changes in beneficial ownership23 Sep 2021

Manthripragada Vijay(17)

  • Form 4Statement of changes in beneficial ownership16 Mar
  • Form 4Statement of changes in beneficial ownership19 Dec 2025
  • Form 4Statement of changes in beneficial ownership12 Nov 2025
  • Form 4Statement of changes in beneficial ownership9 May 2024
  • Form 4Statement of changes in beneficial ownership3 Mar 2022
  • Form 4Statement of changes in beneficial ownership20 Dec 2021
  • Form 4Statement of changes in beneficial ownership4 Nov 2021
  • Form 4Statement of changes in beneficial ownership1 Nov 2021
  • Form 4Statement of changes in beneficial ownership28 Sep 2021
  • Form 4Statement of changes in beneficial ownership24 Sep 2021

PRICE JAMES K(14)

  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4Statement of changes in beneficial ownership3 Jan 2025
  • Form 4Statement of changes in beneficial ownership2 Jan 2024
  • Form 4Statement of changes in beneficial ownership7 Mar 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2023
  • Form 4Statement of changes in beneficial ownership17 May 2022
  • Form 4Statement of changes in beneficial ownership16 May 2022
  • Form 4Statement of changes in beneficial ownership3 Mar 2022
  • Form 4Statement of changes in beneficial ownership3 Jan 2022
  • Form 5Annual statement of beneficial ownership14 Feb 2022

Revuelta Jose(13)

  • Form 4Statement of changes in beneficial ownership12 May
  • Form 4Statement of changes in beneficial ownership11 Mar
  • Form 4Statement of changes in beneficial ownership5 Mar
  • Form 4/AStatement of changes in beneficial ownership (amendment)11 Mar
  • Form 4Statement of changes in beneficial ownership19 Dec 2025
  • Form 4Statement of changes in beneficial ownership21 Aug 2024
  • Form 4Statement of changes in beneficial ownership4 Mar 2022
  • Form 4Statement of changes in beneficial ownership20 Dec 2021
  • Form 4Statement of changes in beneficial ownership19 Mar 2021
  • Form 4Statement of changes in beneficial ownership8 Jan 2021

PRESBY J THOMAS(12)

  • Form 4Statement of changes in beneficial ownership4 Mar
  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4Statement of changes in beneficial ownership3 Jan 2025
  • Form 4Statement of changes in beneficial ownership25 Nov 2024
  • Form 4Statement of changes in beneficial ownership2 Jan 2024
  • Form 4Statement of changes in beneficial ownership7 Mar 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2022
  • Form 4Statement of changes in beneficial ownership19 May 2021
  • Form 4Statement of changes in beneficial ownership12 Jan 2021

Fernandez De Castro Jose Miguel(12)

  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4/AStatement of changes in beneficial ownership (amendment)14 May 2025
  • Form 4Statement of changes in beneficial ownership7 Mar 2025
  • Form 4Statement of changes in beneficial ownership3 Jan 2025
  • Form 4Statement of changes in beneficial ownership2 Jan 2024
  • Form 4Statement of changes in beneficial ownership13 Sep 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2022
  • Form 4Statement of changes in beneficial ownership17 Sep 2021
  • Form 4Statement of changes in beneficial ownership8 Jan 2021

Field Janet Risi(11)

  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4Statement of changes in beneficial ownership3 Jan 2025
  • Form 4Statement of changes in beneficial ownership2 Jan 2024
  • Form 4Statement of changes in beneficial ownership13 Nov 2023
  • Form 4Statement of changes in beneficial ownership16 May 2023
  • Form 4Statement of changes in beneficial ownership7 Mar 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2022
  • Form 4Statement of changes in beneficial ownership13 Dec 2021
  • Form 3Initial statement of beneficial ownership21 Oct 2021

GRAHAM PETER(10)

  • Form 4Statement of changes in beneficial ownership8 Jun
  • Form 4Statement of changes in beneficial ownership5 Jun
  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4Statement of changes in beneficial ownership3 Jan 2025
  • Form 4Statement of changes in beneficial ownership2 Jan 2024
  • Form 4Statement of changes in beneficial ownership3 Jan 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2022
  • Form 4Statement of changes in beneficial ownership8 Jan 2021
  • Form 4Statement of changes in beneficial ownership29 Jul 2020
  • Form 3Initial statement of beneficial ownership22 Jul 2020

LeMaire Joshua W.(9)

  • Form 4Statement of changes in beneficial ownership3 Mar 2022
  • Form 4Statement of changes in beneficial ownership20 Dec 2021
  • Form 4Statement of changes in beneficial ownership23 Sep 2021
  • Form 4Statement of changes in beneficial ownership17 Sep 2021
  • Form 4Statement of changes in beneficial ownership19 Aug 2021
  • Form 4Statement of changes in beneficial ownership19 Mar 2021
  • Form 4Statement of changes in beneficial ownership8 Jan 2021
  • Form 3Initial statement of beneficial ownership22 Jul 2020
  • Form 4Statement of changes in beneficial ownership24 Jul 2020

Newmark Robin(8)

  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4Statement of changes in beneficial ownership3 Jan 2025
  • Form 4Statement of changes in beneficial ownership2 Jan 2024
  • Form 4Statement of changes in beneficial ownership3 Jan 2023
  • Form 4Statement of changes in beneficial ownership3 Jan 2022
  • Form 4Statement of changes in beneficial ownership8 Jan 2021
  • Form 4Statement of changes in beneficial ownership29 Jul 2020
  • Form 3Initial statement of beneficial ownership22 Jul 2020

Colman Vincent(3)

  • Form 4Statement of changes in beneficial ownership6 Jan
  • Form 4Statement of changes in beneficial ownership14 May 2025
  • Form 4Statement of changes in beneficial ownership12 Mar 2025

OAKTREE CAPITAL MANAGEMENT LP(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

BROOKFIELD ASSET MANAGEMENT INC.(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

OAKTREE FUND GP I, L.P.(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

Oaktree Holdings, Ltd.(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

Oaktree Capital Group, LLC(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

Oaktree Capital I, L.P.(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

OCM HOLDINGS I, LLC(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

OAKTREE HOLDINGS, LLC(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

OCM FIE, LLC(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

Oaktree Fund GP, LLC(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

Partners Ltd(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

OCM Montrose II Holdings, L.P.(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

OCM Montrose Holdings, L.P.(2)

  • Form 4OWNERSHIP DOCUMENT2 Dec 2020
  • Form 3OWNERSHIP DOCUMENT6 Aug 2020

Laws James(2)

  • Form 4Statement of changes in beneficial ownership13 Mar
  • Form 3Initial statement of beneficial ownership12 Mar

Jonna Peter Joseph(1)

  • Form 3Initial statement of beneficial ownership22 Jul 2020

Hinchman Brook(1)

  • Form 3Initial statement of beneficial ownership22 Jul 2020

≥5% Ownership

ALGER ASSOCIATES INC(7)

  • SC 13G/AMontrose Environmental Group, Inc.14 Feb 2025
  • SC 13GMontrose Environmental Group, Inc.14 Nov 2024
  • SC 13G/AMontrose Environmental Group, Inc.10 Oct 2023
  • SC 13G/AMontrose Environmental Group, Inc.14 Feb 2023
  • SC 13G/AMontrose Environmental Group, Inc.8 Apr 2022
  • SC 13G/AMontrose Environmental Group, Inc.14 Feb 2022
  • SC 13GMontrose Environmental Group, Inc.8 Oct 2021

UBS AM, A Distinct Business Unit Of UBS ASSET MANAGEMENT AMERICAS LLC(4)

  • SC 13G/AMontrose Environmental Group, Inc.24 Oct 2025
  • SC 13G/AMontrose Environmental Group, Inc.13 Feb 2024
  • SC 13G/AMontrose Environmental Group, Inc.13 Feb 2023
  • SC 13GMontrose Environmental Group, Inc.14 Feb 2022

FMR LLC(3)

  • SC 13GOnterris, Inc.8 Sep
  • SC 13G/AMontrose Environmental Group, Inc.9 Feb 2022
  • SC 13GMontrose Environmental Group, Inc.8 Feb 2021

BAMCO INC /NY/(3)

  • SC 13G/AMontrose Environmental Group, Inc.14 Nov 2025
  • SC 13G/AMontrose Environmental Group, Inc.15 May 2025
  • SC 13GMontrose Environmental Group, Inc.14 Feb 2025

BlackRock Inc.(3)

  • SC 13G/AMontrose Environmental Group, Inc.25 Jan 2024
  • SC 13G/AMontrose Environmental Group, Inc.31 Jan 2023
  • SC 13GMontrose Environmental Group, Inc.4 Feb 2022

MANAGED ACCOUNT ADVISORS LLC(3)

  • SC 13G/AMontrose Environmental Group, Inc.14 Aug 2025
  • SC 13G/AMontrose Environmental Group, Inc.4 Apr 2025
  • SC 13GMontrose Environmental Group, Inc.13 Feb 2025

Capital Research Global Investors(3)

  • SC 13G/AMontrose Environmental Group, Inc.9 Feb 2024
  • SC 13G/AMontrose Environmental Group, Inc.13 Feb 2023
  • SC 13GMontrose Environmental Group, Inc.11 Feb 2022

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC(3)

  • SC 13G/AMontrose Environmental Group, Inc.12 Nov 2025
  • SC 13G/AMontrose Environmental Group, Inc.30 Jul 2025
  • SC 13GMontrose Environmental Group, Inc.9 May 2025

VANGUARD GROUP INC(2)

  • SC 13G/AMontrose Environmental Group, Inc.27 Mar
  • SC 13GMontrose Environmental Group, Inc.13 Feb 2024

GOLDMAN SACHS ASSET MANAGEMENT, L.P.(2)

  • SC 13G/AOnterris, Inc.9 Nov
  • SC 13GOnterris, Inc.11 May

MACQUARIE GROUP LTD(2)

  • SC 13G/AMontrose Environmental Group, Inc.13 Feb
  • SC 13G/AMontrose Environmental Group, Inc.15 May 2025

NOMURA ASSET MANAGEMENT INTERNATIONAL INC.(1)

  • SC 13GOnterris, Inc.14 Aug

MILLENNIUM MANAGEMENT LLC(1)

  • SC 13GMontrose Environmental Group, Inc.17 Dec 2024