Insights

Premier clientele High net worth individuals, entertainers and industry professionals comprise a significant client base, presenting opportunities to cross-sell comprehensive financial management, tax planning, royalty administration and insurance services.

Scale and reach Large team size and long track record in the San Fernando Valley suggest capacity for serving high-volume, multifaceted financial needs and potential upsell of integrated back-office accounting, payroll, and advisory solutions.

Integrated services In-house royalty and insurance departments indicate a capability to bundle specialized financial services, enabling cross-sell of risk management, royalty tracking, and asset protection offerings to entertainment clients.

Strategic partnerships Established relationships with mortgage brokers, banks and financial institutions can be leveraged to introduce clients to lending, refinancing, and wealth management partnerships, expanding revenue streams.

Digital footprint A tech-savvy platform mix (WordPress, WooCommerce, SEO tools, modern JS frameworks) suggests opportunities to offer advisory on financial systems integration, cloud-based bookkeeping, and scalable tech-enabled financial management for growth-oriented clients.

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GSO Business Management, LLC Tech Stack

GSO Business Management, LLC uses 8 technology products and services including WordPress, WooCommerce, Google Fonts API, and more. Explore GSO Business Management, LLC's tech stack below.

  • Content Management System
  • E-commerce
  • Google Fonts API
    Font Scripts
  • Backbone.js
    Javascript Frameworks
  • jQuery
    Javascript Libraries
  • Yoast SEO
    Search Engines
  • ZURB Foundation
    UI Frameworks
  • Twitter
    Widgets

GSO Business Management, LLC's Email Address Formats

GSO Business Management, LLC uses at least 3 email formats:
GSO Business Management, LLC Email FormatsExamplePercentage
FLast@gsogroup.comJDoe@gsogroup.com
80%
F.Last@gsogroup.comJ.Doe@gsogroup.com
11%
First@gsogroup.comJohn@gsogroup.com
9%

Frequently Asked Questions

What is GSO Business Management, LLC's phone number?

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You can contact GSO Business Management, LLC'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 GSO Business Management, LLC's official website and social media links?

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GSO Business Management, LLC's official website is gsogroup.com and has social profiles on LinkedIn.

How much revenue does GSO Business Management, LLC generate?

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As of July 2026, GSO Business Management, LLC's annual revenue is estimated to be $25M - $50M.

What is GSO Business Management, LLC's SIC code and NAICS code?

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GSO Business Management, LLC's SIC code is 7389 - Business Services, Not Elsewhere Classified and NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

How many employees does GSO Business Management, LLC have currently?

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As of July 2026, GSO Business Management, LLC has approximately 51 employees across 2 continents, including North America and Asia. Key team members include President: S. L., Director, Royalties: S. A. and Accountant: S. C. Explore GSO Business Management, LLC's employee directory with LeadIQ.

What industry does GSO Business Management, LLC belong to?

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GSO Business Management, LLC operates in the Accounting industry.

What technology does GSO Business Management, LLC use?

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GSO Business Management, LLC's tech stack includes WordPress, WooCommerce, Google Fonts API, Backbone.js, jQuery, Yoast SEO, ZURB Foundation and Twitter.

What is GSO Business Management, LLC's email format?

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GSO Business Management, LLC's email format typically follows the pattern of FLast@gsogroup.com. Find more GSO Business Management, LLC email formats with LeadIQ.

When was GSO Business Management, LLC founded?

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GSO Business Management, LLC was founded in 1977.
GSO Business Management, LLC logo

GSO Business Management, LLC

AccountingCalifornia, United States51-200 Employees

GSO Business Management offers comprehensive financial management for individuals and professionals, combining bookkeeping, accounting, and CPA services with in-house royalty and insurance support to address a broad range of financial needs. Its client roster includes entertainers, musicians, producers, athletes, and other high-net-worth individuals. The firm is based in Sherman Oaks, California, positioned near the center of the Ventura Boulevard business corridor in the Los Angeles area, and operates with a sizable professional staff.
The firm traces its origins to Bernard Gudvi, who launched Bernard Gudvi & Co. in 1977; after a merger and the establishment of a Sherman Oaks office in 1989, it evolved into its current form. Today, the practice is led by partners Michael Oppenheim and Nicholas Brown and emphasizes coordinating a client’s entire financial world, supported by alliances with mortgage brokers, banks, and financial institutions to broaden service reach. In the San Fernando Valley, the firm is regarded as one of the larger business management practices serving high-profile clients.

Section iconCompany Overview

Phone number
SIC Code
7389 - Business Services, Not Elsewhere Classified
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
1977
Employees
51-200

Section iconFunding & Financials

  • $25M - $50M

    GSO Business Management, LLC's revenue is estimated to be in the range of $25M - $50M

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