PR Agency Client Transparency Index 2026: 10 Firms Audited

All ten major PR agencies Everything-PR reviewed, including Edelman, Weber Shandwick and FleishmanHillard, publicly name at least one client in official case studies, and nine of the ten also publish a numerical result. The figures are agency-reported and measure different things, from impressions to retail sales, so they show how openly firms share their work, not which firm performs best.

Research date: November 8, 2026. Updated: November 9, 2026.

Key takeaways

• All ten agencies name at least one client in official materials.
• Nine agencies publish a numerical outcome. Porter Novelli is the tenth, and its numeric outcome was not verified in this sample, which is a research limit and not proof that none exists.
• Impressions, website visits, retail sales, sales pipeline and market share are different measures and should not be compared directly.
• A case study does not prove a current client relationship.
• This is a review of public evidence. It is not a ranking of agency quality, effectiveness or ethics.

Contents

1. What did the Client Transparency Index find?
2. How did each of the ten agencies disclose its work?
3. What do the numbers actually mean?
4. What changed in 2026 for the firms in the sample?
5. What should buyers ask a PR agency about its results?
6. How did Everything-PR run the review?
7. What is the bottom line?
8. Frequently asked questions

What did the Client Transparency Index find?

Every firm in the sample gives buyers something concrete to look at: a named brand, a described campaign and, in nine cases, a number. The table below pairs each agency with one client example from its own materials and the headline result it reports for that work.

Agency	Named client example	Reported result (agency-reported)
Edelman	Hellmann's	4.7 billion impressions and 600+ media placements
Weber Shandwick	Liquid I.V.	$26 million in retail sales and 3.3 million new households
FleishmanHillard	Great Clips	10.5% year-over-year increase in Online Check-In use
Burson	Coca-Cola (Thailand)	1.247 billion estimated impressions across 716 clippings
Golin Ketchum	SquareTrade (legacy Golin work)	$1 billion in reported pipeline growth and 47 new opportunities
Porter Novelli	Pedigree	Numerical outcome not verified in the sample
APCO Worldwide	IKEA	Market share up more than 44% over a decade-long partnership
FINN Partners	Precisely	275 million+ impressions and 878 media hits
Ruder Finn	Porsche (Hong Kong)	50% increase in positive media stories
Allison Worldwide	Dexcom	1.2 million Dexcom.com visits

Source note: all figures are agency-reported, cover different periods and campaigns, and have not been independently audited by Everything-PR. Pipeline is not revenue, and market share growth is not proof that an agency caused it.

How did each of the ten agencies disclose its work?

Edelman

Edelman's work pages are organized by client and campaign. Its Hellmann's "Lifetime Contract" case reports 4.7 billion impressions, more than 600 media placements and 98% positive coverage, and it describes the strategy, execution and outcome in separate sections. See the official case study. For background on the firm, read EPR's profile of Edelman's founder and first client.

Weber Shandwick

Weber Shandwick presents its Liquid I.V. Super Bowl work with a challenge, solution and impact structure. The page reports $26 million in retail sales, 3.3 million new households and more than 16.5 billion earned impressions. Its 2026 Cannes entries also name Pringles, Pop-Tarts, Snickers and Visit Sweden, which shows how broad the named portfolio is. Read the case study and EPR's explainer on Weber Shandwick and Omnicom.

FleishmanHillard

FleishmanHillard's Great Clips case goes beyond impressions. It reports 1.82 billion earned impressions, 16.3 million video views and 6.5 million social engagements, plus a 10.5% increase in Online Check-In use, which is a customer behavior measure. The page does not show a campaign date. See the official source and EPR's FleishmanHillard profile.

Burson

Burson publishes regional work, which matters in a global audit. Its Coca-Cola FIFA World Cup Trophy Tour in Bangkok, held over two days in January 2026, reports 716 media clippings across 155 outlets, 1.247 billion estimated impressions and 100% positive sentiment. Read the Burson Thailand case and EPR's Burson agency profile.

Golin Ketchum

Golin Ketchum shows a clear B2B example. The Connection Test for SquareTrade reports 230 million+ media reach, 2 million+ video views, $1 billion in pipeline growth, 47 new opportunities and 77 meetings at Mobile World Congress. The work was done by legacy Golin, and the merged agency now hosts it. Omnicom announced the Golin and Ketchum merger on February 10, 2026, and the combined brand launched in June 2026. See the case study and EPR's Golin Ketchum profile.

Porter Novelli

Porter Novelli's official Cannes Decoded 2024 report credits work for Pedigree and Whiskas through Porter Novelli New Zealand, and for Annahar through Impact Porter Novelli Dubai. A comparable numerical campaign outcome was not verified in the selected material. Porter Novelli now operates as a dedicated brand within FleishmanHillard. Read the official report and EPR's Porter Novelli profile.

APCO Worldwide

APCO's IKEA page describes a decade-long partnership and says its work helped IKEA grow market share by more than 44% across that period. Long-term relationships are valuable for buyers to see, and the figure is best read as context rather than a single-agency result. See the IKEA case study and EPR's APCO profile.

FINN Partners

FINN's Precisely case reports 878 media hits across the UK, France and Germany in 2024, more than 275 million impressions and a 43% increase in placements in the client's wish-list media. It pairs volume with relevance, and the case won the SABRE In2 award for data in campaign planning. Read the official case study and EPR's FINN Partners profile.

Ruder Finn

Ruder Finn Asia publishes named work for Porsche, OPPO and the Almond Board of California. Its Porsche Hong Kong case reports a 50% increase in positive media stories, more than 1,000 media stories over one year and more than 55 million in media value. The page is undated. See the Porsche case and EPR's Ruder Finn profile.

Allison Worldwide

Allison's case studies name Dexcom, Corona, HPE, Booking.com, Tillamook and Kimpton. Its Dexcom Super Bowl debut for the G6 system reports 1.2 million visits to Dexcom.com and the most searched ad of the night, a behavior metric that sits apart from media reach. The page is undated. See the Dexcom case and EPR's Allison Worldwide profile.

What do the numbers actually mean?

A client logo shows that a relationship existed. It does not show scope, recency or which tasks the agency handled. A campaign description shows what the agency says it did. Media metrics record reported exposure or engagement, not business outcomes.

Commercial indicators such as sales, website traffic and pipeline are often more useful to buyers, but they still need a baseline, a measurement period and a defensible attribution method. Several cases here involved other agencies, for example Liquid I.V. also worked with creative, media and experiential partners on its Super Bowl effort, so no single number belongs to one firm alone.

Metric type	Examples in this sample	What it tells a buyer
Exposure	Impressions, media hits, clippings	Reported reach, not business impact
Behavior	Website visits, Online Check-In use	What audiences did after seeing the work
Commercial	Retail sales, pipeline, market share	Business context that needs baselines and attribution
Quality	Positive stories, wish-list placements	Relevance of coverage, not only volume

What changed in 2026 for the firms in the sample?

Consolidation reshaped the list this year. Omnicom completed its merger with Interpublic on November 26, 2025. In February 2026, Omnicom Public Relations folded Porter Novelli into FleishmanHillard as a dedicated brand and announced the Golin and Ketchum merger. Weber Shandwick also sits inside Omnicom Public Relations after the deal.

That means four of the ten brands in this sample, FleishmanHillard, Porter Novelli, Golin Ketchum and Weber Shandwick, now belong to one holding company, and Porter Novelli and FleishmanHillard operate together. Case studies from before these changes carry the names the agencies used at the time. Read more in EPR's Omnicom Public Relations Group profile and the 2026 PR industry restructuring report.

What should buyers ask a PR agency about its results?

Public case studies are a strong starting point for a first conversation. These five questions turn a logo and a number into usable evidence:

1. Is this client relationship current or historical?
2. What work did the agency itself perform, and what did partners do?
3. What were the baseline and the measurement period?
4. Were the results independently measured, and what attribution method was used?
5. Can the agency provide recent, relevant client references?

How did Everything-PR run the review?

Everything-PR conducted a purposive public-source review of ten prominent communications organizations in November 2026. Sources included official global and regional websites, agency case studies and official published materials. Inclusion was not random and the sample is not statistically representative.

Named-client disclosure counted when an identifiable client was publicly associated with agency work in an official source. Quantified-outcome disclosure counted when a numerical campaign or business result appeared in official materials. Each figure was checked against the agency's own page on November 8, 2026.

The review does not examine every agency page, verify client contracts, confirm current client rosters or independently validate performance metrics. Missing evidence means not verified within the reviewed sample, not absent everywhere. Golin predecessor work is labeled as legacy work. Agencies may send corrections or additional official sources to the Everything-PR editorial team for review.

What is the bottom line?

All ten firms in the sample publicly identify clients, and nine publish numbers, which is a healthy sign for an industry that sells trust. The next step is clearer scope, dated work, explained measurement and careful attribution. Logos start the conversation, and context lets buyers finish it with confidence.