Insights

Complexity to Clarity Sullivan specializes in transforming complex, regulated or technical industries into clear, customer-centric brands, presenting a strong sales angle for targeting financial services, higher education, technology, and professional services clients seeking brand clarity and improved decision-point engagement.

Scale & Investment With revenue in the high hundreds of millions and a mid-market to enterprise client footprint, Sullivan can position as a premium partner for large brands needing strategic branding at scale, suggesting upsell opportunities in bigger digital and omni-channel campaigns.

Female-Led Credibility Being woman-owned and WBENC certified enhances credibility with corporate buyers prioritizing diverse suppliers, opening procurement and partnership opportunities with organizations seeking inclusive vendor portfolios.

Industry Expertise Deep experience in financial services, higher education, technology, and professional services offers cross-sell potential to clients in related verticals and provides a blueprint for case-led outreach to similar risk-heavy or complex ecosystems.

Tech-Driven Capabilities The tech stack including analytics and marketing tooling signals data-driven campaigns and measurable outcomes, providing a clear selling point for clients seeking ROI-focused branding, attribution, and performance marketing partnerships.

Sullivan Tech Stack

Sullivan uses 8 technology products and services including Alteryx, REST, gstatic.com, and more. Explore Sullivan's tech stack below.

  • Alteryx
    Advanced Analytics And Data Science
  • REST
    Api Management
  • gstatic.com
    Content Delivery Network
  • Campaign Monitor SPF
    Marketing Automation
  • Really Simple Discovery
    Miscellaneous
  • LinkedIn
    Online Community Software
  • Microsoft Bing
    Site Search
  • ZURB Foundation
    UI Frameworks

Sullivan's Email Address Formats

Sullivan uses at least 1 format(s):
Sullivan Email FormatsExamplePercentage
FLast@sullivannyc.comJDoe@sullivannyc.com
98%
LastFir@sullivannyc.comDoeJoh@sullivannyc.com
1%
L.First@sullivannyc.comD.John@sullivannyc.com
1%

Frequently Asked Questions

What is Sullivan's phone number?

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You can contact Sullivan'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 Sullivan's stock symbol?

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Sullivan is a publicly traded company; the company's stock symbol is OSL.

What is Sullivan's official website and social media links?

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Sullivan's official website is sullivannyc.com and has social profiles on LinkedIn.

What is Sullivan's SIC code NAICS code?

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Sullivan's SIC code is 8742 - Management Consulting Services NAICS code is 541613 - Marketing Consulting Services.

How many employees does Sullivan have currently?

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As of July 2026, Sullivan has approximately 372 employees across 5 continents, including North AmericaEuropeOceania. Key team members include Ceo: B. O.Owner: B. S.Owner: D. S.. Explore Sullivan's employee directory with LeadIQ.

What industry does Sullivan belong to?

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Sullivan operates in the Advertising Services industry.

What technology does Sullivan use?

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Sullivan's tech stack includes AlteryxRESTgstatic.comCampaign Monitor SPFReally Simple DiscoveryLinkedInMicrosoft BingZURB Foundation.

What is Sullivan's email format?

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Sullivan's email format typically follows the pattern of FLast@sullivannyc.com. Find more Sullivan email formats with LeadIQ.

When was Sullivan founded?

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Sullivan was founded in 1990.
Sullivan logo

Sullivan

Advertising ServicesNew York, United States201-500 Employees

Sullivan is a brand and marketing firm based in New York City, founded in 1990 by Barbara Apple Sullivan. It specializes in translating complex business models into brands that are easy to understand and relate to, with a focus on guiding customers at moments of decision within intricate ecosystems. The firm brings decades of experience across sectors such as financial services, higher education, technology, and professional services, and is woman-owned with WBENC certification.

In the Advertising Services landscape, Sullivan emphasizes brand work that supports customers at critical decision points rather than broad awareness campaigns. Located in New York City and operating as a mid-sized firm, it pursues engagements that require deep industry insight and tailored branding strategies for organizations navigating complexity.

Section iconCompany Overview

Phone number
SIC Code
8742 - Management Consulting Services
Stock Symbol
OSL
NAICS Code
541613 - Marketing Consulting Services
Founded
1990
Employees
201-500

Section iconFunding & Financials

  • $500M$1B

    Sullivan's revenue is estimated to be in the range of $500M$1B

Section iconFunding & Financials

  • $500M$1B

    Sullivan's revenue is estimated to be in the range of $500M$1B

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