Rated #16 as an ENR All-Environmental firm and #68 in the top 200 overall, we are known for our technical expertise, rapid response, operational integrity, and exceptional client satisfaction. We operate in all 50 states and maintain a highly capable and diverse team of scientists, engineers, technicians, and information management specialists.
Location: United States, Maryland, Rockville
Employees: 501-1000
Phone: +1 800-733-2739
Founded date: 1988
Investors 2
| Date | Name | Website |
| - | Yukon Part... | yukonpartn... |
| - | Sentinel C... | sentinelpa... |
Mentions in press and media 15
| Date | Title | Description |
| 10.06.2026 | Apex Companies, LLC Named a 2026 Hot Firm by Zweig Group | ROCKVILLE, MD, UNITED STATES, June 10, 2026 /EINPresswire.com/ -- Apex Companies, LLC (Apex) has been recognized as a 2026 Hot Firm by Zweig Group, the leading provider of management consulting, research, and education for the architecture,... |
| 18.03.2026 | Apex Companies, LLC Acquires CWE | Complements service offerings with added strength in engineering capabilities in civil infrastructure, water resources & environmental services in California. ROCKVILLE, MD, UNITED STATES, March 18, 2026 /EINPresswire.com/ -- Apex Compa... |
| 13.01.2026 | Morgan Stanley Capital Partners Takes Majority Stake in Engineering Firm Olsson | Investment funds managed by Morgan Stanley Capital Partners (MSCP) have made a majority investment in Olsson, Inc., an employee-owned engineering and design firm, in a transaction that also includes significant re-investment by Olsson emplo... |
| 26.11.2024 | Apex Acquires Weiler Engineering | Expands Engineering Capabilities and Amplifies Presence in Florida ROCKVILLE, MD, UNITED STATES, November 26, 2024 /EINPresswire.com/ -- Apex Companies, LLC (Apex) today announced the acquisition of Weiler Engineering Corporation, (Weiler E... |
| 16.10.2024 | Dave Fabianski to Retire as Apex President & CEO | Apex Names Shawn Doherty as CEO to Succeed Fabianski Fabianski to Continue as Apex Board Member ROCKVILLE, MD, UNITED STATES, October 16, 2024 /EINPresswire.com/ -- Apex Companies, LLC today announced that Dave Fabianski will retire as the ... |
| 04.09.2024 | Apex Acquires Johnson Engineering | Elevates Engineering Capabilities and Expands Presence in Florida ROCKVILLE , MD, UNITED STATES, September 4, 2024 /EINPresswire.com/ -- Apex Companies, LLC (Apex) today announced the acquisition of Johnson Engineering, Inc., (Johnson Engin... |
| 03.06.2024 | Apex Companies, LLC Acquires Storm Water Inspection & Maintenance Services, Inc | Expands Storm Water Capabilities and Bolsters Presence in California ROCKVILLE, MD, UNITED STATES, June 3, 2024 /EINPresswire.com/ -- Apex Companies, LLC (Apex) today announced the acquisition of Storm Water Inspection & Maintenance Ser... |
| 21.03.2024 | Apex Companies, LLC Acquires PBS Engineering and Environmental Inc. | This acquisition expands Apex's multi-disciplinary engineering and consulting capabilities and strengthens their presence in the Pacific Northwest. ROCKVILLE, MD, UNITED STATES, March 21, 2024 /EINPresswire.com/ -- Apex Companies, LLC (Apex... |
| 27.06.2023 | Apex Recognized for Outstanding Safety Performance by Colonial Pipeline Company | Accepting the award on behalf of Apex: Senior Program Manager John Strecker (left center) and Senior Project Manager Andrew Street (right center) Apex is a proud Circle of Excellence Honoree for environmental consulting support provided to ... |
| 01.06.2021 | The ‘How’ Of Carbon Reporting In The U.S. | Keep an eye on comparability, business sense, verifiability, net zero pledges, reliance on offsets, cost to the company and whether the stock market fully appreciates such costs, risk factor discussion, stress test of a pseudo carbon cost, ... |
Show more