SEC Filings for Montrose Environmental Group, Inc. (MEG)

Last updated: 2026-03-27 15:10 UTC | Total filings: 361

Browse the latest SEC filings and forms submitted by Montrose Environmental Group, Inc. (MEG). Access annual reports, quarterly statements, and other official disclosures.

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Form Filing Date Description Link
SCHEDULE 13G/A March 27, 2026 - View Document
DEF 14A March 24, 2026 DEF 14A View Document
ARS March 24, 2026 ARS View Document
DEFA14A March 24, 2026 DEFA14A View Document
4 March 16, 2026 4 View Document
4 March 16, 2026 4 View Document
144 March 13, 2026 - View Document
4 March 13, 2026 4 View Document
3 March 12, 2026 3 View Document
4 March 11, 2026 4 View Document
4/A March 11, 2026 4/A View Document
144 March 9, 2026 - View Document
4 March 5, 2026 4 View Document
4 March 4, 2026 4 View Document
144 March 4, 2026 - View Document
4 March 4, 2026 4 View Document
144 March 3, 2026 - View Document
144 March 3, 2026 - View Document
144 March 2, 2026 - View Document
144 March 2, 2026 - View Document
S-8 Feb. 26, 2026 S-8 View Document
10-K Feb. 26, 2026 10-K View Document
8-K Feb. 25, 2026 8-K View Document
SCHEDULE 13G/A Feb. 13, 2026 - View Document
8-K Jan. 20, 2026 8-K View Document
4 Jan. 6, 2026 4 View Document
4 Jan. 6, 2026 4 View Document
4 Jan. 6, 2026 4 View Document
4 Jan. 6, 2026 4 View Document
4 Jan. 6, 2026 4 View Document
4 Jan. 6, 2026 4 View Document
4 Jan. 6, 2026 4 View Document
4 Jan. 6, 2026 4 View Document
4 Dec. 19, 2025 4 View Document
4 Dec. 19, 2025 4 View Document
4 Dec. 19, 2025 4 View Document
4 Dec. 19, 2025 4 View Document
SCHEDULE 13G/A Nov. 14, 2025 - View Document
4 Nov. 12, 2025 4 View Document
SCHEDULE 13G/A Nov. 12, 2025 - View Document
144 Nov. 12, 2025 - View Document
144 Nov. 10, 2025 - View Document
10-Q Nov. 5, 2025 10-Q View Document
8-K Nov. 4, 2025 8-K View Document
SCHEDULE 13G/A Oct. 24, 2025 - View Document
SCHEDULE 13G/A Aug. 14, 2025 - View Document
10-Q Aug. 7, 2025 10-Q View Document
8-K Aug. 6, 2025 8-K View Document
SCHEDULE 13G/A July 30, 2025 - View Document
8-K July 7, 2025 8-K View Document
SCHEDULE 13G/A May 15, 2025 - View Document
SCHEDULE 13G/A May 15, 2025 - View Document
4 May 14, 2025 4 View Document
4/A May 14, 2025 4/A View Document
SCHEDULE 13G May 9, 2025 - View Document
8-K May 9, 2025 8-K View Document
10-Q May 8, 2025 10-Q View Document
8-K May 7, 2025 8-K View Document
SCHEDULE 13G/A April 4, 2025 - View Document
DEF 14A March 24, 2025 DEF 14A View Document
DEFA14A March 24, 2025 DEFA14A View Document
ARS March 24, 2025 ARS View Document
4 March 12, 2025 4 View Document
4 March 7, 2025 4 View Document
PRE 14A March 7, 2025 PRE 14A View Document
S-8 March 3, 2025 S-8 View Document
10-K March 3, 2025 10-K View Document
8-K Feb. 26, 2025 8-K View Document
8-K Feb. 20, 2025 8-K View Document
SCHEDULE 13G Feb. 14, 2025 - View Document
SCHEDULE 13G/A Feb. 14, 2025 - View Document
SCHEDULE 13G Feb. 13, 2025 - View Document
8-K Jan. 17, 2025 8-K View Document
8-K Jan. 6, 2025 8-K View Document
4 Jan. 3, 2025 4 View Document
4 Jan. 3, 2025 4 View Document
4 Jan. 3, 2025 4 View Document
4 Jan. 3, 2025 4 View Document
4 Jan. 3, 2025 4 View Document
4 Jan. 3, 2025 4 View Document
4 Jan. 3, 2025 4 View Document
SC 13G Dec. 17, 2024 - View Document
4 Nov. 25, 2024 4 View Document
SC 13G Nov. 14, 2024 MONTROSE ENVIRONMENTAL GROUP, INC. View Document
10-Q Nov. 7, 2024 10-Q View Document
8-K Nov. 6, 2024 8-K View Document
4 Aug. 21, 2024 4 View Document
10-Q Aug. 7, 2024 10-Q View Document
8-K Aug. 6, 2024 8-K View Document
UPLOAD June 10, 2024 - View Document
CORRESP May 16, 2024 - View Document
4 May 15, 2024 4 View Document
8-K May 14, 2024 8-K View Document
4 May 9, 2024 4 View Document
8-K May 8, 2024 8-K View Document
10-Q May 8, 2024 10-Q View Document
8-K May 7, 2024 8-K View Document
UPLOAD May 6, 2024 - View Document
144 May 6, 2024 - View Document
DEFA14A April 22, 2024 DEFA14A View Document
424B5 April 19, 2024 424B5 View Document
8-K April 19, 2024 8-K View Document
424B5 April 16, 2024 424B5 View Document
S-3ASR April 16, 2024 S-3ASR View Document
8-K April 2, 2024 8-K View Document
ARS March 25, 2024 ARS View Document
DEF 14A March 25, 2024 DEF 14A View Document
DEFA14A March 25, 2024 DEFA14A View Document
PRE 14A March 11, 2024 PRE 14A View Document
8-K Feb. 29, 2024 8-K View Document
10-K Feb. 29, 2024 10-K View Document
S-8 Feb. 29, 2024 S-8 View Document
8-K Feb. 20, 2024 8-K View Document
SC 13G/A Feb. 13, 2024 AMENDMENT 2 View Document
SC 13G Feb. 13, 2024 SCHEDULE 13G View Document
SC 13G/A Feb. 9, 2024 SEC SCHEDULE 13G View Document
SC 13G/A Jan. 25, 2024 - View Document
4 Jan. 2, 2024 FORM 4 SUBMISSION View Document
4 Jan. 2, 2024 FORM 4 SUBMISSION View Document
4 Jan. 2, 2024 FORM 4 SUBMISSION View Document
4 Jan. 2, 2024 FORM 4 SUBMISSION View Document
4 Jan. 2, 2024 FORM 4 SUBMISSION View Document
4 Jan. 2, 2024 FORM 4 SUBMISSION View Document
4 Jan. 2, 2024 FORM 4 SUBMISSION View Document
4 Nov. 13, 2023 FORM 4 SUBMISSION View Document
4 Nov. 13, 2023 FORM 4 SUBMISSION View Document
10-Q Nov. 8, 2023 10-Q View Document
8-K Nov. 7, 2023 8-K View Document
SC 13G/A Oct. 10, 2023 MONTROSE ENVIRONMENTAL GROUP, INC. View Document
4 Sept. 13, 2023 FORM 4 SUBMISSION View Document
10-Q Aug. 9, 2023 10-Q View Document
8-K Aug. 8, 2023 8-K View Document
8-K June 6, 2023 8-K View Document
4 May 16, 2023 FORM 4 SUBMISSION View Document
8-K May 11, 2023 8-K View Document
10-Q May 10, 2023 10-Q View Document
8-K May 9, 2023 8-K View Document
DEF 14A March 28, 2023 DEF 14A View Document
ARS March 28, 2023 ARS View Document
DEFA14A March 28, 2023 DEFA14A View Document
4 March 7, 2023 FORM 4 SUBMISSION View Document
4 March 7, 2023 FORM 4 SUBMISSION View Document
4 March 7, 2023 FORM 4 SUBMISSION View Document
10-K March 1, 2023 10-K View Document
S-8 March 1, 2023 S-8 View Document
8-K Feb. 28, 2023 8-K View Document
4 Feb. 21, 2023 FORM 4 SUBMISSION View Document
SC 13G/A Feb. 14, 2023 MONTROSE ENVIRONMENTAL GROUP, INC. View Document
SC 13G/A Feb. 13, 2023 - View Document
SC 13G/A Feb. 13, 2023 SEC SCHEDULE 13G View Document
4 Feb. 3, 2023 FORM 4 SUBMISSION View Document
4 Feb. 1, 2023 FORM 4 SUBMISSION View Document
SC 13G/A Jan. 31, 2023 - View Document
4 Jan. 27, 2023 FORM 4 SUBMISSION View Document
4 Jan. 24, 2023 FORM 4 SUBMISSION View Document
4 Jan. 20, 2023 FORM 4 SUBMISSION View Document
4 Jan. 17, 2023 FORM 4 SUBMISSION View Document
4 Jan. 3, 2023 FORM 4 SUBMISSION View Document
4 Jan. 3, 2023 FORM 4 SUBMISSION View Document
4 Jan. 3, 2023 FORM 4 SUBMISSION View Document
4 Jan. 3, 2023 FORM 4 SUBMISSION View Document
4 Jan. 3, 2023 FORM 4 SUBMISSION View Document
4 Jan. 3, 2023 FORM 4 SUBMISSION View Document
4 Jan. 3, 2023 FORM 4 SUBMISSION View Document
10-Q Nov. 9, 2022 10-Q View Document
8-K Nov. 8, 2022 8-K View Document
10-Q Aug. 9, 2022 10-Q View Document
8-K Aug. 8, 2022 8-K View Document
CORRESP June 16, 2022 - View Document
UPLOAD June 16, 2022 - View Document
8-K June 14, 2022 8-K View Document
8-K June 8, 2022 8-K View Document
CORRESP May 31, 2022 - View Document
UPLOAD May 18, 2022 - View Document
4 May 17, 2022 FORM 4 SUBMISSION View Document
4 May 16, 2022 FORM 4 SUBMISSION View Document
CORRESP May 11, 2022 - View Document
8-K May 11, 2022 8-K View Document
10-Q May 10, 2022 10-Q View Document
8-K May 9, 2022 8-K View Document
UPLOAD April 28, 2022 - View Document
SC 13G/A April 8, 2022 MONTROSE ENVIRONMENTAL GROUP, INC. View Document
4/A March 29, 2022 FORM 4/A SUBMISSION View Document
DEF 14A March 29, 2022 DEF 14A View Document
DEFA14A March 29, 2022 DEFA14A View Document
8-K March 28, 2022 8-K View Document
4 March 21, 2022 FORM 4 SUBMISSION View Document
4 March 4, 2022 FORM 4 SUBMISSION View Document
4 March 3, 2022 FORM 4 SUBMISSION View Document
4 March 3, 2022 FORM 4 SUBMISSION View Document
4 March 3, 2022 FORM 4 SUBMISSION View Document
4 March 3, 2022 FORM 4 SUBMISSION View Document
4 March 3, 2022 FORM 4 SUBMISSION View Document
10-K March 1, 2022 10-K View Document
S-8 March 1, 2022 S-8 View Document
8-K Feb. 28, 2022 8-K View Document
5 Feb. 15, 2022 FORM 5 SUBMISSION View Document
SC 13G/A Feb. 14, 2022 MONTROSE ENVIRONMENTAL GROUP, INC. View Document
5 Feb. 14, 2022 FORM 5 SUBMISSION View Document
SC 13G Feb. 14, 2022 INITIAL FILING DECEMBER 2021 View Document
SC 13G Feb. 11, 2022 SEC SCHEDULE 13G View Document
SC 13G/A Feb. 9, 2022 - View Document
SC 13G Feb. 4, 2022 - View Document
4 Jan. 3, 2022 FORM 4 SUBMISSION View Document
4 Jan. 3, 2022 FORM 4 SUBMISSION View Document
4 Jan. 3, 2022 FORM 4 SUBMISSION View Document
4 Jan. 3, 2022 FORM 4 SUBMISSION View Document
4 Jan. 3, 2022 FORM 4 SUBMISSION View Document
4 Jan. 3, 2022 FORM 4 SUBMISSION View Document
4 Jan. 3, 2022 FORM 4 SUBMISSION View Document
8-K Dec. 21, 2021 8-K View Document
4 Dec. 20, 2021 FORM 4 SUBMISSION View Document
4 Dec. 20, 2021 FORM 4 SUBMISSION View Document
4 Dec. 20, 2021 FORM 4 SUBMISSION View Document
4 Dec. 20, 2021 FORM 4 SUBMISSION View Document
4 Dec. 20, 2021 FORM 4 SUBMISSION View Document
4 Dec. 13, 2021 FORM 4 SUBMISSION View Document
4 Dec. 6, 2021 FORM 4 SUBMISSION View Document
4 Dec. 2, 2021 FORM 4 SUBMISSION View Document
4 Nov. 12, 2021 FORM 4 SUBMISSION View Document
10-Q Nov. 10, 2021 10-Q View Document
4 Nov. 9, 2021 FORM 4 SUBMISSION View Document
8-K Nov. 9, 2021 8-K View Document
4 Nov. 4, 2021 FORM 4 SUBMISSION View Document
4 Nov. 1, 2021 FORM 4 SUBMISSION View Document
4 Oct. 27, 2021 FORM 4 SUBMISSION View Document
8-K Oct. 25, 2021 8-K View Document
4 Oct. 22, 2021 FORM 4 SUBMISSION View Document
4 Oct. 21, 2021 FORM 4 SUBMISSION View Document
3 Oct. 21, 2021 FORM 3 SUBMISSION View Document
4 Oct. 19, 2021 FORM 4 SUBMISSION View Document
SC 13G Oct. 8, 2021 MONTROSE ENVIRONMENTAL GROUP, INC. View Document
424B5 Sept. 30, 2021 424B5 View Document
8-K Sept. 30, 2021 8-K View Document
4 Sept. 28, 2021 FORM 4 SUBMISSION View Document
424B5 Sept. 27, 2021 424B5 View Document
4 Sept. 24, 2021 FORM 4 SUBMISSION View Document
4 Sept. 24, 2021 FORM 4 SUBMISSION View Document
4 Sept. 23, 2021 FORM 4 SUBMISSION View Document
4 Sept. 23, 2021 FORM 4 SUBMISSION View Document
4 Sept. 23, 2021 FORM 4 SUBMISSION View Document
4 Sept. 17, 2021 FORM 4 SUBMISSION View Document
4 Sept. 17, 2021 FORM 4 SUBMISSION View Document
4 Sept. 17, 2021 FORM 4 SUBMISSION View Document
4 Sept. 17, 2021 FORM 4 SUBMISSION View Document
4 Sept. 13, 2021 FORM 4 SUBMISSION View Document
4 Sept. 13, 2021 FORM 4 SUBMISSION View Document
4 Aug. 23, 2021 FORM 4 SUBMISSION View Document
424B3 Aug. 20, 2021 424B3 View Document
EFFECT Aug. 20, 2021 - View Document
4 Aug. 19, 2021 FORM 4 SUBMISSION View Document
UPLOAD Aug. 18, 2021 - View Document
CORRESP Aug. 18, 2021 - View Document
10-Q Aug. 11, 2021 10-Q View Document
S-3 Aug. 11, 2021 S-3 View Document
S-3ASR Aug. 11, 2021 S-3ASR View Document
8-K Aug. 10, 2021 8-K View Document
4 Aug. 4, 2021 FORM 4 SUBMISSION View Document
4 July 2, 2021 FORM 4 SUBMISSION View Document
4 June 28, 2021 FORM 4 SUBMISSION View Document
4 May 19, 2021 FORM 4 SUBMISSION View Document
8-K May 17, 2021 8-K View Document
8-K May 12, 2021 8-K View Document
10-Q May 12, 2021 MEG-Q1-20210331 View Document
8-K April 29, 2021 8-K View Document
4 April 1, 2021 FORM 4 SUBMISSION View Document
8-K April 1, 2021 8-K View Document
DEFA14A April 1, 2021 DEFA14A View Document
DEF 14A April 1, 2021 DEF 14A View Document
4 March 31, 2021 FORM 4 SUBMISSION View Document
S-8 March 26, 2021 S-8 View Document
10-K March 24, 2021 10-K View Document
8-K March 24, 2021 8-K View Document
4 March 19, 2021 FORM 4 SUBMISSION View Document
4 March 19, 2021 FORM 4 SUBMISSION View Document
4 March 19, 2021 FORM 4 SUBMISSION View Document
4 March 19, 2021 FORM 4 SUBMISSION View Document
4 March 19, 2021 FORM 4 SUBMISSION View Document
8-K March 8, 2021 8-K View Document
4 Feb. 25, 2021 FORM 4 SUBMISSION View Document
SC 13G Feb. 8, 2021 - View Document
4 Jan. 12, 2021 FORM 4 SUBMISSION View Document
8-K Jan. 11, 2021 8-K View Document
4 Jan. 8, 2021 FORM 4 SUBMISSION View Document
4 Jan. 8, 2021 FORM 4 SUBMISSION View Document
4 Jan. 8, 2021 FORM 4 SUBMISSION View Document
4 Jan. 8, 2021 FORM 4 SUBMISSION View Document
4 Jan. 8, 2021 FORM 4 SUBMISSION View Document
4 Jan. 8, 2021 FORM 4 SUBMISSION View Document
4 Jan. 8, 2021 FORM 4 SUBMISSION View Document
4 Jan. 8, 2021 FORM 4 SUBMISSION View Document
4 Jan. 8, 2021 FORM 4 SUBMISSION View Document
4 Jan. 8, 2021 FORM 4 SUBMISSION View Document
4 Dec. 23, 2020 FORM 4 SUBMISSION View Document
4 Dec. 17, 2020 FORM 4 SUBMISSION View Document
4 Dec. 2, 2020 OWNERSHIP DOCUMENT View Document
4 Dec. 2, 2020 OWNERSHIP DOCUMENT View Document
4 Dec. 1, 2020 FORM 4 SUBMISSION View Document
4 Dec. 1, 2020 FORM 4 SUBMISSION View Document
4 Dec. 1, 2020 FORM 4 SUBMISSION View Document
424B4 Nov. 25, 2020 424B4 View Document
EFFECT Nov. 24, 2020 - View Document
S-1 Nov. 23, 2020 S-1 View Document
CORRESP Nov. 23, 2020 - View Document
CORRESP Nov. 23, 2020 - View Document
UPLOAD Nov. 19, 2020 - View Document
DRS Nov. 13, 2020 - View Document
8-K Nov. 12, 2020 8-K View Document
10-Q Nov. 12, 2020 10-Q View Document
8-K Oct. 7, 2020 8-K View Document
S-8 Sept. 1, 2020 S-8 View Document
8-K Aug. 31, 2020 8-K View Document
10-Q Aug. 31, 2020 10-Q View Document
3 Aug. 6, 2020 OWNERSHIP DOCUMENT View Document
3 Aug. 6, 2020 OWNERSHIP DOCUMENT View Document
8-K July 30, 2020 8-K View Document
4 July 29, 2020 FORM 4 SUBMISSION View Document
4 July 29, 2020 FORM 4 SUBMISSION View Document
4 July 29, 2020 FORM 4 SUBMISSION View Document
4 July 29, 2020 FORM 4 SUBMISSION View Document
4 July 29, 2020 FORM 4 SUBMISSION View Document
4 July 29, 2020 FORM 4 SUBMISSION View Document
4 July 29, 2020 FORM 4 SUBMISSION View Document
4 July 24, 2020 FORM 4 SUBMISSION View Document
4 July 24, 2020 FORM 4 SUBMISSION View Document
4 July 24, 2020 FORM 4 SUBMISSION View Document
4 July 24, 2020 FORM 4 SUBMISSION View Document
4 July 24, 2020 FORM 4 SUBMISSION View Document
424B4 July 23, 2020 424B4 View Document
EFFECT July 22, 2020 - View Document
3 July 22, 2020 FORM 3 SUBMISSION View Document
3 July 22, 2020 FORM 3 SUBMISSION View Document
3 July 22, 2020 FORM 3 SUBMISSION View Document
3 July 22, 2020 FORM 3 SUBMISSION View Document
3 July 22, 2020 FORM 3 SUBMISSION View Document
3 July 22, 2020 FORM 3 SUBMISSION View Document
3 July 22, 2020 FORM 3 SUBMISSION View Document
3 July 22, 2020 FORM 3 SUBMISSION View Document
3 July 22, 2020 FORM 3 SUBMISSION View Document
3 July 22, 2020 FORM 3 SUBMISSION View Document
3 July 22, 2020 FORM 3 SUBMISSION View Document
3 July 22, 2020 FORM 3 SUBMISSION View Document
3 July 22, 2020 FORM 3 SUBMISSION View Document
CORRESP July 20, 2020 - View Document
CORRESP July 20, 2020 - View Document
CORRESP July 20, 2020 - View Document
CERT July 20, 2020 NYSE CERTIFICATION View Document
S-1/A July 20, 2020 S-1/A View Document
8-A12B July 17, 2020 8-A12B View Document
CORRESP July 14, 2020 - View Document
S-1/A July 14, 2020 S-1/A View Document
UPLOAD July 14, 2020 - View Document
CORRESP July 13, 2020 - View Document
S-1 June 29, 2020 S-1 View Document
DRS/A June 3, 2020 - View Document
DRSLTR Dec. 20, 2019 - View Document
DRS/A Dec. 20, 2019 - View Document
UPLOAD Dec. 13, 2019 - View Document
DRS Nov. 15, 2019 - View Document
D/A June 10, 2015 - View Document
D June 8, 2015 - View Document