Insights

Growth momentum Recent hires in litigation, trust and estates, business law, and real estate indicate active expansion of practice areas and an opportunity to present complementary services such as digital workflow solutions, case management tools, and scalable compliance programs to support growth.

Strategic positioning Recognition in Best Law Firms 2026 across multiple practices signals a strong regional brand. This presents opportunities to offer higher-value partnerships, thought leadership content, and targeted marketing tech to amplify client acquisition and cross-selling within established sectors.

Client lifecycle Full-service offering spanning business needs to personal legal matters suggests a potential for integrated client portals, matter management solutions, and concierge services that streamline multi-generational and estate planning engagements for business owners.

Technology stack Current tools include web and content management technologies; there is room to propose modernization of client experience with secure portals, e-billing, document automation, and analytics to enhance case outcomes and client satisfaction.

Financial potential Revenue range and mid-market focus imply opportunities for scalable legal operations services, cloud-based practice management, and outsourced compliance or risk management solutions to support a growing mid-sized law firm.

O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. Tech Stack

O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. uses 8 technology products and services including Adobe, JSON-LD, AMP, and more. Explore O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s tech stack below.

  • Adobe
    Audio, Video, Graphics
  • JSON-LD
    Javascript Frameworks
  • AMP
    Javascript Frameworks
  • jQuery
    Javascript Libraries
  • Really Simple Discovery
    Miscellaneous
  • HTTP/3
    Web & Portal Technology
  • WP-PageNavi
    Web Platform Extensions
  • Max Mega Menu
    Widgets

O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s Email Address Formats

O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. uses at least 1 format(s):
O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. Email FormatsExamplePercentage
First.Last@wilaw.comJohn.Doe@wilaw.com
76%
Last@wilaw.comDoe@wilaw.com
21%
F.Last@wilaw.comJ.Doe@wilaw.com
2%
First.Middle@wilaw.comJohn.Michael@wilaw.com
1%

Frequently Asked Questions

What is O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s phone number?

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You can contact O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s official website and social media links?

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O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s official website is wilaw.com and has social profiles on LinkedIn.

How much revenue does O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. generate?

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As of July 2026, O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s annual revenue is estimated to be $25M - $50M.

What is O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s SIC code NAICS code?

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O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s SIC code is 8111 - Legal Services NAICS code is 54111 - Offices of Lawyers.

How many employees does O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. have currently?

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As of July 2026, O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. has approximately 90 employees across 1 continents, including North America. Key team members include Office Manager: J. S.Erisa/Employee Benefits & Compensation Attorney: K. K.Accounts Payable: B. R.. Explore O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s employee directory with LeadIQ.

What industry does O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. belong to?

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O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. operates in the Law Practice industry.

What technology does O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. use?

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O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s tech stack includes AdobeJSON-LDAMPjQueryReally Simple DiscoveryHTTP/3WP-PageNaviMax Mega Menu.

What is O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s email format?

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O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s email format typically follows the pattern of First.Last@wilaw.com. Find more O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. email formats with LeadIQ.

When was O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. founded?

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O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. was founded in 1973.
O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. logo

O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.

Law PracticeWisconsin, United States51-200 Employees

O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C. is a Milwaukee-based law practice that provides practical legal guidance to businesses and their owners. The firm supports clients through all stages of the business life cycle, helping them start, grow, and transition their ventures, while also handling personal matters such as tax and estate planning, family law, and various forms of litigation, including personal injury. Its lawyers work in collaborative teams to analyze issues thoroughly and to pursue clients' goals with attentive, reliable service.

In 2026, the firm announced the addition of John 'Jack' McNally as a member of its Litigation and Trusts, Estates and Succession Planning Practice Groups.

Section iconCompany Overview

Phone number
Website
wilaw.com
SIC Code
8111 - Legal Services
NAICS Code
54111 - Offices of Lawyers
Founded
1973
Employees
51-200

Section iconFunding & Financials

  • $25M - $50M

    O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s revenue is estimated to be in the range of $25M - $50M

Section iconFunding & Financials

  • $25M - $50M

    O'NEIL, CANNON, HOLLMAN, DEJONG & LAING S.C.'s revenue is estimated to be in the range of $25M - $50M

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