Celtic Chicago Learned to Sell the Parts of Business Most People Skip

There is a species of sentence native to business-to-business marketing. It contains the words solution, innovation and partner, usually in that order, and leaves the reader knowing less than when the sentence began. This happens because the product is complicated, the buyers are specialized and the writer becomes frightened. Celtic Chicago has built a business by walking toward that fear. The agency works on grain protectants, specialty chemicals, manufacturing platforms, food ingredients and mosquito control. It treats the technical detail not as something to bury, but as the raw material for the story.

That is a narrower and more interesting claim than “full service.” Celtic does offer the familiar agency shelf: strategy, branding, advertising, creative, digital, media, social, public relations, video and websites. Its Celtic Associations division also manages memberships, conferences and professional organizations. But service lists are easy to copy. Fluency is not. The firm’s public work is aimed at farmers, chemists, food scientists, plant managers, product distributors and other people who can spot a tourist in their industry after two sentences.

The grain bin is worth $2.5 billion

Consider stored grain. Insect infestations cost that industry about $2.5 billion a year. The number is enormous, but the culprit is tiny and usually invisible. For Central Life Sciences’ Bug Free Grains line, Celtic created “Monster Bug,” a campaign that enlarged the threat into something impossible to overlook. The program joined advertising, a website, video, paid search, retargeting, social media, automation, direct mail, earned media and trade-show work. More than two million social impressions helped lift total digital impressions by 279%.

The useful move was not merely inventing a monster. It was connecting a physical nuisance to operational profit, then giving the sales team a story it could carry into a customer conversation. For another Central Life Sciences product, Altosid IGR, Celtic recruited credible agricultural influencers to demonstrate the product through reviews, demos and testimonials. The launch used in-person focus groups and message testing, and the client reported a 12% sales increase. The idea had to survive contact with people who actually use the product.

“Looking back to look ahead.”Jim Heitzman on the first step in annual planning

Four manufacturers walk into one brand

The cleanest example of Celtic’s method may be UPTIVE, a manufacturing company assembled from four specialist businesses. Its original problem was fragmentation. Rapid prototyping, advanced materials and full-scale production sat together operationally, but not yet as one memorable market story. Buyers could see the equipment. They could not immediately see the connective tissue.

Celtic found it in the people. “The Minds Behind Manufacturing” argued that technology is only half of a manufacturing partnership; human judgment turns the rough concept into the finished thing. That premise became a visual identity, digital campaign, social content and sales-enablement system. The images split human anatomy and machinery down the middle, making the strategy visible before a line of copy had to explain it. UPTIVE generated more than 100 new leads in the first month.

This is what Celtic does, exactly: it interviews the people close to the work, locates the tension a buyer already recognizes, builds one organizing idea, and distributes it across the places where a long B2B decision happens. The agency’s public case studies rarely present an isolated ad. They present systems. A campaign may begin in a focus group, appear on a trade-show wall, follow a buyer through programmatic media and return later as a sales deck or email.

An agency that counts the whole campaign

Celtic’s business is privately held and its engagements are tailored. There is no public price menu. The model is visible in the work: custom launches and ongoing integrated programs, with strategy at the front and measurement at the back. Its own writing argues for comprehensive campaign reporting rather than a parade of separate dashboards. Website behavior, advertising, social, email and other signals belong in the same conversation because a B2B sale rarely belongs to one click.

That philosophy also explains an unexpected branch of the company. Celtic Associations handles membership operations, event planning, strategy and digital support for professional groups. It is not just an adjacent revenue line. It gives the agency experience with the actual mechanics of a community: why members show up, what makes a conference useful and how expertise circulates among peers. For technical B2B marketing, those are valuable muscles.

The handoff, then the haircut

Marlene Byrne founded Celtic in 1992. Succession was gradual rather than theatrical. Jim Heitzman joined in 2011, became president and partner in 2018, and moved into the president and CEO role in 2024. Danielle Vitogiannes, who joined the firm in 2005, took responsibility for digital and associations. Jeremy Hogan, with the agency since 2011, led content and media. Byrne became an advisor. Between them, the new leaders had decades of shared institutional memory before anyone changed the letterhead.

Then, in 2025, they did change it. Celtic introduced a brighter visual system, a new office and a more pointed voice. The new logo contains a clipped final C, a small typographic hint about how to pronounce the company’s name. It is a surprisingly good symbol for the larger strategy: remove the avoidable confusion, keep the distinctive part.

There is a copyable lesson here, and it is not “use a bright green logo.” Pick sectors in which knowledge compounds. Let product experts complicate the first draft. Reduce the complication only after you understand it. Find a human truth sturdy enough to cross every channel. Then measure the campaign as one connected system. This works when the agency can earn access to experts and the client will tolerate research, message testing and iteration. It weakens when “industry expertise” is merely a costume, when every audience is targeted at once, or when a clever line is asked to substitute for product value.

Celtic calls its culture passionate, curious and nimble. The middle word is doing the most work. Curiosity is what lets an advertising person ask a mosquito-control manager one more question about drone applications, or a manufacturer why four businesses belong together. Somewhere inside the answer is the campaign. Most people skip that part. Celtic Chicago sells it.