Apex Companies Overview

  • Year Founded
  • 1988

Year Founded

  • Status
  • Private

  • Employees
  • 1,349

Employees

  • Latest Deal Type
  • Debt - Acquisition

  • Financing Rounds
  • 12

  • Investments
  • 19

Apex Companies General Information

Description

Provider of consulting and engineering services intended to address environmental and infrastructure challenges. The company offers expertise in stormwater compliance, water infrastructure, ESG consulting, and civil engineering, enabling public sector and private clients across diverse industries to enhance sustainability, regulatory compliance, and operational efficiency.

Contact Information

Website
www.apexcos.com
Ownership Status
Privately Held (backing)
Financing Status
Private Equity-Backed
Corporate Office
  • 2101 Gaither Road
  • Suite 500
  • Rockville, MD 20850
  • United States
+1 (301)
Primary Industry
Consulting Services (B2B)
Other Industries
Environmental Services (B2B)
Corporate Office
  • 2101 Gaither Road
  • Suite 500
  • Rockville, MD 20850
  • United States
+1 (301)

Apex Companies Timeline

2022202320242025
Financing RoundCaptured Employee CountEstimated Employee Growth

Want detailed data on 3M+ companies?

What you see here scratches the surface

Request a free trial

Want to dig into this profile?

We’ll help you find what you need

Learn more

Apex Companies Valuation & Funding

Deal Type Date Amount Valuation/
EBITDA
Post-Val Status Debt

This information is available in the PitchBook Platform. To explore Apex Companies‘s full profile, request access.

Request a free trial

Apex Companies Comparisons

Description
Primary
Industry
HQ Location
Employees
Total Raised
Post Valuation
Last
Financing
Details
Provider of consulting and engineering services intended to address environmental and infrastructure challenges. The com
Consulting Services (B2B)
Rockville, MD
1,349 As of 2025

Stow, OH
 

Lansing, MI
 
Add Comparison

PitchBook’s comparison feature gives you a side-by-side look at key metrics for similar companies. Personalize which data points you want to see and create visualizations instantly.

Request a free trial

Apex Companies Competitors (21)

One of Apex Companies’s 21 competitors is EnviroScience, a Formerly PE-Backed company based in Stow, OH.

Company Name Financing Status Location Employees Total Raised Last Financing Date/Type Last Financing Amount
EnviroScience Formerly PE-Backed Stow, OH
PM Environmental Private Equity-Backed Lansing, MI
Environmental Planning Group Formerly PE-Backed Phoenix, AZ
KC Harvey Environmental Private Equity-Backed Bozeman, MT
Partner Engineering & Science Corporation Torrance, CA
You’re viewing 5 of 21 competitors. Get the full list »

Apex Companies Signals

Growth Rate

Weekly
Growth
Weekly Growth

Size Multiple

Median
Size Multiple

Key Data Points

Similarweb Unique Visitors

Majestic Referring Domains

PitchBook’s non-financial metrics help you gauge a company’s traction and growth using web presence and social reach.

Request a free trial

Apex Companies Investors

Investor Name Investor Type Holding Investor Since Participating Rounds Contact Info

This information is available in the PitchBook Platform. To explore Apex Companies‘s full profile, request access.

Request a free trial

Apex Companies Investments (19)

Apex Companies’s most recent deal was a Buyout/LBO with THE WEILER ENGINEERING CORPORATION. The deal was made on 25-Nov-2024.

Company Name Deal Date Deal Type Deal Size Industry Lead Partner
THE WEILER ENGINEERING CORPORATION 25-Nov-2024 Buyout/LBO Construction and Engineering
Johnson Engineering 03-Sep-2024 Buyout/LBO Construction and Engineering
Storm Water Inspection & Maintenance Services 03-Jun-2024 Buyout/LBO Other Commercial Services
PBS Engineering and Environmental 01-Mar-2024 Buyout/LBO Consulting Services (B2B)
Water Science Associates 08-Mar-2023 Buyout/LBO Consulting Services (B2B)
You’re viewing 5 of 19 investments. Get the full list »

Apex Companies Affiliates

Subsidiaries (8)

Name Industry Location Year Founded
Water Science Associates Fort Myers, FL 2013
CME Engineering Greensburg, PA 1999
Storm Water Inspection & Maintenance Services Discovery Bay, CA 1998
Environmental Partners Group Quincy, MA 1997
THE WEILER ENGINEERING CORPORATION 1993
You’re viewing 5 of 8 affiliates. Get the full list.  »

Apex Companies FAQs

Data Transparency

  • Meet our data hygiene team

    Discover how our experts ensure you’re getting the most accurate financial data in the industry.

    Read blog »
  • How PitchBook sources data

    Our data operations team has logged over 3.5 million hours researching, organizing, and integrating the information you need most.

    Discover our process »