Costello Law Firm, PLLC Employee Directory

Law PracticeWashington, United States11-50 Employees

Costello Law Firm attorneys represent corporations, business owners, and professionals under investigation by, or under suit or the threat of suit by the government.  We have worked with government investigators and attorneys in these high stakes, high pressure cases, for almost thirty years.  We leverage our experience to help our client’s resolve these matters in a discrete, efficient, and effective way.   We handle:  

White Collar Defense Matters
•	Complex Grand Jury Investigations.
•	Government Investigations. 
•	Trials in State and Federal Court.
 
Civil and Regulatory Enforcement Actions and Professional Licensing Matters 
•	Federal. 
•	State.
•	Local. 

Complex Litigation
•	Quasi-Criminal Actions:  Civil Allegations of Wrongdoing. 
•	Concurrent and Parallel Criminal, Civil and Regulatory Investigations and Proceedings.

Find Costello Law Firm, PLLC employees' phone numbers or email addresses

Costello Law Firm, PLLC Global Highlights

Location
Employees

North America
14

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  • United States Of America
    14

Costello Law Firm, PLLC's Leadership

  • Stylized image of a person
    C. C.
    Owner
    Phone icon
  • Stylized image of a person
    C. P.
    Law Clerk
    Phone icon
  • Stylized image of a person
    L. M.
    Phone icon

Costello Law Firm, PLLC Employee Metrics

100%
50%
0%
2026
2025
  • Legal
  • Accounting
  • Administrative
  • Analytics
  • Arts & Design
  • Other

Contact profiles from Costello Law Firm, PLLC

Name
Title
Contact Info
Location
Last Update
  • Stylized image of a person
    C. C.
    Owner
    Phone icon
    United StatesNew Jersey
    Oct 21, 2025
  • Stylized image of a person
    C. P.
    Law Clerk
    Phone icon
    United States
    May 13, 2025
  • Stylized image of a person
    L. M.
    Phone icon
    UNITED STATES
    Mar 07, 2023

Frequently Asked Questions

What is Costello Law Firm, PLLC known for?

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Costello Law Firm, PLLC was founded in 1998 operates in the Law Practice industry. The company's main headquarters is located in Seattle, Washington United States; you can contact the main corporate office by phone at . Explore Costello Law Firm, PLLC's company overview page for more information.

What is Costello Law Firm, PLLC's most common email format?

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Costello Law Firm, PLLC employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more Costello Law Firm, PLLC email formats with LeadIQ.

How many employees does Costello Law Firm, PLLC have currently?

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Costello Law Firm, PLLC has approximately 12 employees as of February 2026. These team members are located across 1 continents, including North America.

Who are Costello Law Firm, PLLC's key employees and leadership?

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As of February 2026, Costello Law Firm, PLLC's key employees include:

  • Owner: C. C.
  • Law Clerk: C. P.
  • : L. M.

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