What Does HLK Do?

Total employees404
HeadquartersSt. Louis
Founded1977

HughesLeahyKarlovic, commonly known as HLK, is an independent digital agency that partners with brands to create meaningful customer experiences. They offer a comprehensive suite of services including brand strategy, creative development, digital marketing, media planning and buying, data analytics, and technology solutions. HLK focuses on data-driven insights and human-centered design to deliver measurable results for their clients across various industries, helping them navigate complex marketing challenges and connect with their audiences in impactful ways.

Where Is HLK's Headquarters?

HQ Function

The St. Louis headquarters serves as the primary hub for HLK's operations, including executive leadership, core strategic planning, creative development, technology innovation, and administrative functions. It supports all agency departments and client accounts.

Notable Features:

Located in a vibrant downtown area, the office is likely designed as a modern, open-concept workspace to foster collaboration and creativity. It may feature project rooms, presentation spaces, and common areas equipped with current technology.

Work Culture:

HLK's headquarters fosters a collaborative, innovative, and results-oriented work culture. Employees often describe it as fast-paced yet supportive, with an emphasis on teamwork, continuous learning, and a passion for delivering high-quality work for clients. There's a strong sense of community and a drive for creative excellence.

HQ Significance:

As the founding location and main office, the St. Louis headquarters is central to HLK's identity, growth, and operational excellence. It anchors the company's presence in the Midwest and serves as the nerve center for its national client base.

Values Reflected in HQ: The headquarters' design and atmosphere likely reflect HLK's core values such as innovation, collaboration, client-centricity, and a commitment to craft.

Location:

HughesLeahyKarlovic primarily operates within the United States, with key offices in St. Louis, Denver, and Kansas City. While their physical presence is domestic, they serve clients with national and sometimes international marketing needs, leveraging digital platforms and remote collaboration to support campaigns and strategies that may reach global audiences. Their core global functions revolve around digital campaign management and strategy for U.S.-based companies with international operations or aspirations.

Street Address:

1701 Locust St

City:

St. Louis

State/Province:

MO

Country:

USA

Where Else Does HLK Operate Around the World?

Denver, Colorado, USA

Address: 1621 18th St, Suite 250, Denver, CO 80202

To serve as a key service point for clients in the Western United States, fostering regional business development and providing localized market insights and support.

Kansas City, Missouri, USA

Address: 1734 Main St, Kansas City, MO 64108

To enhance service delivery for clients in Kansas, Missouri, and surrounding states, tapping into the local talent pool and business ecosystem of the Kansas City metropolitan area.

Buying Intent Signals for HLK

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Who's Leading HLK? Meet the Executive Team

As of April 2025, HLK' leadership includes:

Eric Karlovic - Managing Partner
Mike Leahy - Managing Partner
Adam Kaufman - Partner, CX & Technology
Andrea List - Partner, Client Services
Jay Sivewright - SVP, Finance & Operations
Amy Sterne - SVP, Client Development
Kyle Waggoner - SVP, Creative & Content

Who's Investing in HLK?

HLK has been backed by several prominent investors over the years, including:

HLK is a privately held, independent agency. Information regarding specific private investors or funding rounds is not publicly disclosed.

What Leadership Changes Has HLK Seen Recently?

Hire0
Exits0

Based on publicly available information and general industry observation, HLK's senior leadership team appears relatively stable. No major, widely publicized executive hires or departures have been noted in the past 12 months. Minor shuffles or promotions might occur internally without broad announcement.

What Technology (Tech Stack) Is Used byHLK?

Discover the tools HLK uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

HLK Email Formats and Examples

HughesLeahyKarlovic (HLK) most likely utilizes common professional email formats. The primary domain is hlk.com. Standard formats include first initial followed by last name, or first name separated from last name by a period.

[first_initial][last]@hlk.com (e.g., jdoe@hlk.com) or [first].[last]@hlk.com (e.g. jane.doe@hlk.com)

Format

ekarlovic@hlk.com

Example

80%

Success rate

What's the Latest News About HLK?

The Communicator AwardsMay 16, 2023

HLK Honored with Multiple Wins at the 29th Annual Communicator Awards

HLK Creative Agency received several distinctions at the 29th Annual Communicator Awards. Their work for various clients, including Bayer Crop Science, Cass Information Systems, and Stifel, was recognized with Awards of Excellence and Distinction across categories like Branded Content, Integrated Campaigns, and Website Design....more

St. Louis Business JournalFebruary 28, 2023

HLK marketing agency projects 15% revenue growth, plans to hire 15-20

St. Louis-based marketing agency HLK projected significant revenue growth for 2023 and announced plans to expand its team by hiring 15 to 20 new employees. This growth reflects increasing demand for its digital and creative services....more

HLK Website NewsSeptember 20, 2022

HLK Named Small Agency of the Year by Ad Age

HLK was recognized as a Small Agency of the Year (Silver, 76-150 employees, Midwest region) by Ad Age. This prestigious award highlights the agency's creative excellence, client results, and company culture....more

Highperformr's free tools for company research

Explore Employees by Region or Country

See where a company’s workforce is located, by country or region.

View Funding Details

View past and recent funding rounds with amounts and investors.

Understand Revenue Insights

Understand company revenue estimates and financial scale.

Track Active Job Openings

Track active roles and hiring trends to spot growth signals.

Review Product and Offerings

Discover what a company offers—products, platforms, and solutions.

Get SIC or NAICS Codes

Get the company’s official SIC and NAICS classifications.

Analyze Website Traffic Trends

Analyze visitor volume, engagement, and top traffic sources.

Discover Social Profiles and Engagement

Explore LinkedIn, Twitter, and other active social profiles.

Identify Top Competitors

Identify top competitors based on similar business traits.

Research and Discover Companies with Highperformr — Smarter, Faster

Explore companies in depth — from the tech they use to recent funding, hiring trends, and buyer signals — all in one powerful view.

Highperformr AI helps you surface the right accounts and enrich your CRM with verified company and contact insights, so your teams can prioritize and engage faster.

  • Track intent signals to find buyers who are actively in-market
  • Enrich contacts and companies instantly, no need to switch tools
  • Automate workflows to stay ahead of every change
  • Connect your CRM & tools for seamless data sync and activation

Thousands of companies, including HLK, are just a search away.