OMC — Q3 2026 Financial Report Analysis

Headline: organic growth reaches 7.2% and merger savings widen the margin again

Omnicom's third quarter of 2026 is the third full quarter that includes Interpublic Group (IPG), which Omnicom bought in late November 2025. That deal still dominates the reported comparison. Revenue rose 59.1% to $6.42 billion from $4.04 billion, net income attributable to Omnicom rose 92.2% to $656.0 million, and diluted earnings per share (EPS) rose 36.0% to $2.38 from $1.75. EPS grew much more slowly than net income because Omnicom issued shares to pay for IPG: the diluted share count is 41% higher than a year ago.

The cleaner test is Omnicom's "Core Operations" view, which treats Omnicom and IPG as one company in both years and leaves out businesses it has sold or is selling. On that basis revenue grew 7.3% to $6.01 billion. Almost all of it was organic growth (growth from existing businesses, after stripping out currency moves and acquisitions): 7.2%, with currency and acquisitions adding 0.1% each. That is the third straight quarter of faster growth: 3.9% in Q1, 6.1% in Q2 and now 7.2%.

The 2025 Core Operations figures add Omnicom's and IPG's reported numbers together. Omnicom says they are for comparison only and are not formal pro forma figures.

Takeaway: The merger is now doing what it was sold on. Like-for-like revenue growth has sped up for two quarters in a row (3.9%, 6.1%, 7.2%), and the like-for-like profit margin is 2.0 points higher than a year ago. Profit is growing about three times as fast as revenue. The risk to watch has moved from "will the cost savings come?" to "how much of the growth survives once the savings stop being new?"

Where the margin gain came from

EBITA is earnings before interest, taxes and amortization of acquired intangible assets. Omnicom's "adjusted" version also leaves out merger costs and gains on sales of businesses. It is the company's preferred profit measure because the IPG deal added a large non-cash amortization charge that has nothing to do with how the agencies are running.

On the Core Operations basis, adjusted EBITA rose $191.1 million to $1,096.2 million. Management attributes the gain to cost synergies and organic growth, and the CEO says Omnicom is "on track to deliver $900 million in cost-reduction synergies in 2026." The margin has risen every quarter this year: 14.8% in Q1, 17.8% in Q2 and 18.2% in Q3.

The cost lines show where the savings come from and where they don't. Salary and related costs rose 61.2% to $2.9 billion, mostly from adding IPG's staff, and the 10-Q says that as a share of revenue they were "relatively flat" year over year. Occupancy and other costs rose 54.7% to $499.3 million because of IPG's extra offices. The filing says the real-estate exit charges taken this quarter "are expected to result in lower costs in the future." So the property savings are mostly still to come.

Revenue mix: media is now more than half the business

Integrated Media (media planning and buying, commerce, data, and precision marketing including IPG's Acxiom) brought in $3.19 billion, or 53.0% of Core Operations revenue. Advertising was 15.6%, Public Relations 11.3%, Experiential & Other 10.7% and Health 9.4%. The 10-Q says third-party service costs (work Omnicom buys from outside suppliers and passes through to clients) rose $552.4 million, partly from "constant currency growth in our Integrated Media discipline." That suggests media is a large part of the organic growth. The filing does not give organic growth by discipline, so the reported discipline growth rates mainly show how much each one gained from IPG. Public Relations (+84.5%) and Health (+81.5%) gained the most.

By region, the United States was $3.62 billion, or 60.2% of Core Operations revenue. Management cites "strong performance in the United States," growth "across all countries" in Latin America and in the Middle East and Africa, and "strong regional performance" in Asia-Pacific. A weaker euro cut Continental Europe's revenue by 3.0% this quarter, so currency was close to zero for the group overall.

The client base keeps getting less concentrated. The ten largest clients were 14.5% of trailing-12-month revenue, down from 19.0%, and the largest single client was 1.8%. Pharma & Health is now the biggest client industry at 18% of revenue (16% a year ago), while Auto fell to 10% from 13%.

What the headline numbers hide

• One-off items nearly cancel out this quarter. Q3 2026 included a $106.8 million gain on selling a subsidiary. That offset most of $84.7 million of repositioning charges (mainly real-estate exits) and $40.4 million of integration costs. Net, these items reduced operating income by only $18.3 million and EPS by $0.03. A year ago, deal and severance costs cut EPS by $0.41. Part of the 36% GAAP EPS growth is simply a much smaller one-off drag, not better operations. The adjusted EPS growth of 21.9% is the fairer read.
• Merger charges have not faded yet. Severance and repositioning costs were $84.7 million, up from $47.0 million in Q2, and integration costs held at about $40 million a quarter. Year to date, integration costs total $139.9 million and repositioning costs $135.8 million. Omnicom says it "may incur additional integration costs."
• A lower tax rate helped a little. The effective tax rate fell to 24.3% from 27.2%, helped by "favorable settlements of uncertain tax positions." On an adjusted basis it was 25.0% versus 26.0%. By our calculation, that one point adds roughly $0.03 to adjusted EPS, a small part of the $0.49 rise.
• Buybacks help per-share figures, and borrowing costs push the other way. Diluted shares fell to 275.4 million from 281.0 million in Q2 after $3.2 billion of buybacks this year. Net interest expense rose to $104.2 million from $43.2 million because of IPG's debt and about $1 billion of extra borrowing in Q1.
• Cash conversion depends on the season, not a warning sign yet. Year to date, operating cash flow was only $37.8 million against $1,698.8 million of net income, because $2.3 billion went into working capital. Omnicom says its working-capital cycle "typically peaks during the second quarter." In Q3 alone operating cash flow was about $970 million (our calculation from the six-month and nine-month figures). Omnicom's own free cash flow measure, which excludes working-capital swings, was $2.35 billion for nine months versus $1.32 billion a year ago. The real check is the full year, since Q4 is usually when the working-capital outflow reverses.
• Businesses being sold are still a drag on the group margin. Sold and held-for-sale units still produced $412.1 million of revenue (down from $567.5 million in Q2) at an adjusted EBITA margin of just 8.2%. That is why the consolidated adjusted EBITA margin (17.6%) is 0.6 points below the core figure (18.2%).

Did last time's read hold up?

Our Q2 2026 analysis named three things to watch. Mostly they went Omnicom's way:

• Whether 6.1% organic growth would last. It sped up again, to 7.2%. Two quarters of acceleration now look more like a trend than a single good quarter.
• Whether the Core adjusted EBITA margin would keep widening. It did. It reached 18.2% against 16.2% a year earlier, a 2.0-point gain that matches Q2's 1.9 points. We also expected integration and severance charges to start falling away. That part did not happen: repositioning charges rose in Q3.
• Progress on selling the lower-margin businesses. Revenue from those units fell to $412.1 million from $567.5 million, and Omnicom booked a $106.8 million gain on one sale. The investor presentation says it expects "to conclude the few remaining dispositions in the near term."

We also flagged debt. Net debt (total debt minus cash) fell to $6.2 billion from $6.7 billion at June 30, and the leverage ratio under the credit facility eased to 2.3x from 2.4x, against a 3.5x limit. Buybacks slowed sharply. Omnicom bought about 2.5 million shares in July and August at an average of about $81, roughly $200 million, and none in September. About $2.1 billion of the $5 billion authorization remains.

Outlook

Omnicom does not give revenue or margin guidance. The quantified items are:

• Synergies: "on track to deliver $900 million in cost-reduction synergies in 2026."
• Currency: at October 21, 2026 exchange rates, currency is expected to have no effect on Q4 revenue and to add about 1.0% for the full year.
• Portfolio: the remaining disposals are expected to close "in the near term." That will lower reported revenue but raise the group margin, because those units earn about 8% against 18% for the core.

Our read: The trend is clearly better than it was six months ago. Organic growth has nearly doubled from Q1 and the margin is up 2 points year over year. Two questions matter most for Q4 and 2027. The first is whether growth holds at around 7% once the merger is a year old and the first year of cost savings is behind it. The second is when the restructuring charges actually stop. They ran at $125 million in Q3, and management describes integration as "nearly complete." In the Q4 report, watch Core organic growth against 7.2%, whether the full-year working-capital outflow reverses as it usually does, and whether buybacks resume after pausing in September.

Figures are from Omnicom's Form 10-Q for the quarter ended September 30, 2026 and its October 22, 2026 earnings release and investor presentation (Form 8-K). Adjusted EBITA, adjusted EPS, organic growth, free cash flow, net debt and Core Operations are Omnicom's own non-GAAP measures.