Montrose Environmental Group Inc SEC Filings

Montrose Environmental Group, Inc. reported an insider share transaction by its Chief Financial Officer on a Form 4. On 12/16/2025, the CFO had 60,813 shares of common stock withheld at a price of $26.40 per share. The filing explains this was to cover tax withholding obligations related to the vesting of restricted stock units, rather than an open-market sale. After this transaction, the CFO beneficially owned 211,643 shares of Montrose Environmental Group common stock directly.

Montrose Environmental Group, Inc. insider reports tax‑related share withholding

A Montrose Environmental Group, Inc. officer, serving as Chief Strategy Officer, reported a transaction in the company’s common stock dated 12/16/202546,216 shares of common stock were disposed of at a price of $26.40 per share, coded as an “F” transaction, which indicates shares were withheld to cover tax obligations.

According to the report, this withholding was done to satisfy tax withholding obligations in connection with the vesting of restricted stock units. After this transaction, the officer directly beneficially owned 269,282 shares of Montrose Environmental Group, Inc. common stock.

Montrose Environmental Group, Inc. reported a routine insider transaction by its President & CEO, who is also a director. On 12/16/2025, 152,886 shares of common stock were withheld and disposed of at $26.4 per share to cover tax withholding obligations tied to vesting restricted stock units. Following this tax withholding event, the reporting person directly beneficially owns 163,751 shares of Montrose Environmental common stock.

Baron Capital Group and affiliates filed an amended Schedule 13G on Montrose Environmental Group (MEG), reporting beneficial ownership of 2,160,463 shares, or 6.12%, tied to the 09/30/2025 event date.

Within the group, BAMCO reports 1,859,070 shares (5.27%), Baron Capital Management reports 301,393 shares (0.85%), and Baron Discovery Fund reports 1,419,000 shares (4.02%). Voting and dispositive power are reported as shared and not sole across entities. The filing certifies the securities were acquired and are held in the ordinary course and not to change or influence control.

Montrose Environmental Group (MEG) reported insider transactions by its President & CEO and Director. On November 10–11, 2025, the insider exercised 44,983 and 44,984 stock options at $6.03 per share, then sold 39,799, 5,072, 112, and 44,984 shares at weighted average prices of $24.626, $25.617, $26.17, and $24.073, respectively. After these transactions, direct beneficial ownership was 316,637 shares. The trades were made under a Rule 10b5-1 trading plan.

William Blair Investment Management, LLC filed Amendment No. 2 to Schedule 13G for Montrose Environmental Group, Inc., reporting beneficial ownership of 1,315,018 shares of Common Stock, or 3.7% of the class, tied to the event date 09/30/2025.

The filer reports sole voting power over 1,052,190 shares and sole dispositive power over 1,315,018 shares, with no shared voting or dispositive power. The reporting person is an investment adviser and certifies the securities were acquired and are held in the ordinary course and not to change or influence control.

MEG filed a Form 144 notice for a proposed sale of up to 44,984 shares of common stock. The filing lists an aggregate market value of $1,082,922.32, an approximate sale date of 11/11/2025, and Fidelity Brokerage Services as broker. The securities are listed on the NYSE.

Shares outstanding were 35,337,667 as of the disclosure. The notice also reports sales during the past three months by the same seller: 44,983 common shares on 11/10/2025 for gross proceeds of $1,112,937.90.

The filing indicates the shares to be sold were acquired on 11/11/2025 via an option originally granted on 06/23/2016, with cash payment noted.

MEG filed a Rule 144 notice for the proposed sale of 44,983 shares of its common stock. The filing lists an aggregate market value of $1,188,450.86 for the planned transaction.

The shares are slated for sale on 11/10/2025 through Fidelity Brokerage Services LLC on the NYSE. The filing indicates the shares were acquired via options granted on 06/23/2016 and paid in cash on the same date as the planned sale.

Montrose Environmental Group (MEG)$224.9 million and net income was $8.4 million, reversing a prior-year net loss. Diluted EPS was $0.21 versus $(0.39) a year ago. Income from operations reached $9.9 million, compared with a loss last year.

For the first nine months, revenue was $637.3 million with net income of $7.4 million, improving from a prior-year loss. Operating cash flow was $55.5 million versus an outflow last year. Cash was $6.7 million at quarter end. Total debt stood at $313.6 million (long-term $302.4 million). The company entered a $500.0 million credit facility on February 26, 2025, consisting of a $200.0 million term loan and a $300.0 million revolver, and was in covenant compliance with a consolidated total leverage ratio of 2.7x.

MEG fully redeemed its Series A‑2 preferred stock by September 30, eliminating the balance and the $20.2 million conversion option shown at year-end 2024. Common shares outstanding were 35,318,532 at September 30, 2025; as of October 31, 2025, they were 35,337,667.