Form 8-K

8-K — Stagwell Inc

Accession: 0000876883-26-000030

Filed: 2026-10-29

Period: 2026-10-29

CIK: 0000876883

SIC: 7311 (SERVICES-ADVERTISING AGENCIES)

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — stgw-20261029.htm (Primary)

EX-99.1 (stgw2026930pr.htm)

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8-K

8-K (Primary)

Filename: stgw-20261029.htm · Sequence: 1

stgw-20261029

0000876883false00008768832026-10-292026-10-29

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

Current Report

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported) — October 29, 2026

Stagwell Inc.

(Exact Name of Registrant as Specified in its Charter)

Delaware 001-13718 86-1390679

(Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)

One World Trade Center, Floor 65, New York, NY 10007

(Address of principal executive offices and zip code)

(646) 429-1800

(Registrant’s Telephone Number)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading symbol(s) Name of each exchange on which registered

Class A Common Stock, $0.001 par value

STGW NASDAQ

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company     ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.                              ☐

Item 2.02 Results of Operations and Financial Condition.

On October 29, 2026, Stagwell Inc. (the “Company”) issued a press release announcing its financial results for the three and nine months ended September 30, 2026. A copy of this earnings release is attached as Exhibit 99.1 hereto.

The foregoing information (including Exhibit 99.1) is being furnished under “Item 2.02 – Results of Operations and Financial Condition.” Such information (including Exhibit 99.1) shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 7.01 Regulation FD Disclosure.

On October 29, 2026, the Company will host a conference call in which its financial results for the three and nine months ended September 30, 2026 will be discussed. The presentation to be used in connection with the call is attached as Exhibit 99.2 hereto.

The foregoing information (including Exhibit 99.2) is being furnished under “Item 7.01 – Regulation FD Disclosure.” Such information (including Exhibit 99.2) shall not be deemed “filed” for purposes of Section 18 of the Exchange Act, nor shall it be deemed incorporated by reference in any filing under the Securities Act or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

99.1 Press release dated October 29, 2026, relating to the Company’s results for the three and nine months ended September 30, 2026.

99.2 Investor presentation dated October 29, 2026.

104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the Company has duly caused this report to be signed by the undersigned hereunto duly authorized.

Date: October 29, 2026 Stagwell Inc.

By: /s/ Ryan J. Greene

Ryan J. Greene

Chief Financial Officer

EX-99.1

EX-99.1

Filename: stgw2026930pr.htm · Sequence: 2

Document

FOR IMMEDIATE ISSUE

STAGWELL INC. (NASDAQ: STGW) REPORTS RESULTS FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2026

Q3 YoY Revenue Growth of 10% to $816 million; Q3 YoY Net Revenue Growth of 8% to $664 million

Q3 YoY Digital Transformation Organic Net Revenue Growth of 23%; Q3 YoY The Marketing Cloud Organic Net Revenue Growth of 108%; Enterprise Technology Products Contracted to Date of $59 million More Than Double Initial 2026 Goal

Q3 EPS of $0.07; Q3 Adjusted EPS Growth YoY of 42% to $0.34

Q3 Net Income Attributable to Stagwell Inc. Common Shareholders of $18 million; Q3 Adjusted EBITDA Growth YoY of 25% to $145 million

Year-to-Date Net Cash Provided by Operating Activities Increased 396% YoY to $152 million; Year-to-Date Free Cash Flow Increased 227% YoY to $52 million

Net New Business of $168 million in Q3; LTM Net New Business of $586 million

Largest Multi-Agency Deal in Stagwell History With ServiceNow; Secured First Major Federal Government Win; Expanded Partnership with Palantir

Raise Full-Year Adjusted EBITDA Guidance to $490 million to $540 million; Raise Full-Year Adjusted EPS Guidance to $1.07 to $1.21

New York, NY, October 29, 2026 (NASDAQ: STGW) – Stagwell Inc. (“Stagwell”) today announced financial results for the three and nine months ended September 30, 2026.

THIRD QUARTER RESULTS:

•Q3 Revenue of $816 million, an increase of 10% versus the prior year period; YTD Revenue of $2,306 million, an increase of 10%;

•Q3 Revenue increased 11% organically versus the prior year period; YTD Revenue increased 9% organically;

•Q3 Net Revenue of $664 million, an increase of 8% versus the prior year period; YTD Net Revenue of $1,880 million, an increase of 6%;

•Q3 Net Revenue increased 7% organically versus the prior year period; YTD Net Revenue increased 5% organically;

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•Q3 Digital Transformation Net Revenue of $119 million, an organic increase of 23% versus the prior year period;

•Two-Year Net Revenue Growth Stack for Digital Transformation of 38%, Two-Year Organic Net Revenue Growth Stack for Digital Transformation of 30%;

•Q3 The Marketing Cloud Net Revenue of $56 million, an organic increase of 108% versus the prior year period;

•YTD enterprise technology products contracted to date of $59 million, more than double initial FY26 target;

•Q3 Net Income attributable to Stagwell Inc. Common Shareholders of $18 million versus $25 million in the prior year period; YTD Net Loss attributable to Stagwell Inc. Common Shareholders of $3 million versus income of $16 million in the prior year period;

•Q3 Adjusted EBITDA of $145 million, an increase of 25% versus the prior year period; YTD Adjusted EBITDA of $343 million an increase of 17%;

•Q3 Adjusted EBITDA Margin of 22% on net revenue; YTD Adjusted EBITDA Margin of 18%;

•Q3 Earnings Per Share attributable to Stagwell Inc. Common Shareholders of $0.07 versus $0.09; YTD Loss Per Share attributable to Stagwell Inc. Common Shareholders of $(0.01) versus Earnings Per Share of $0.04 in the prior year period;

•Q3 Adjusted Earnings Per Share attributable to Stagwell Inc. Common Shareholders of $0.34 versus $0.24; YTD Adjusted Earnings Per Share attributable to Stagwell Inc. Common Shareholders of $0.77 versus $0.54 in the prior year period;

•YTD Net Cash provided by Operating Activities of $152 million versus $31 million in the prior year period;

•Net new business of $168 million in the third quarter, last twelve-month net new business of $586 million

See “Non-GAAP Financial Measures” below for explanations and reconciliations of the Company’s non-GAAP financial measures.

“This is the biggest quarter in Stagwell’s history. It shows we are on track to become number one in marketing transformation,” said Mark Penn, Chairman and CEO of Stagwell. “Software products, like our agentic Stagwell Machines, and the Digital Transformation segment are driving our business as we pivot from primarily marketing services to AI-powered marketing transformation. We have more than doubled our initial Enterprise Technology Bookings goal for the year, saw 23% organic net revenue growth in Digital Transformation, and 108% organic growth in The Marketing Cloud."

Ryan Greene, Chief Financial Officer, added: “The third quarter was Stagwell’s largest ever on virtually every metric. Organic net revenue for the company grew more than 7% year-over-year to $664 million, while our adjusted EBITDA grew 25% to $145 million, and our adjusted EPS grew 42% to $0.34. These improved earnings also contributed to a more than 400% increase in operating cash flow year to date. Net leverage now stands at 2.7x, a 0.7x improvement year-over-year, and our lowest ever third quarter ratio. Results through the first three quarters give us the confidence to raise our adjusted EBITDA and adjusted EPS guidance today.”

Financial Outlook

2026 financial guidance is updated as follows:

•Raise Adjusted EBITDA to $490 million to $540 million

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•Raise Adjusted EPS to $1.07 - $1.21

•Reiterate Total Net Revenue growth of 8% to 12%

•Reiterate Free Cash Flow Conversion of 50% to 60%

•Guidance includes anticipated impact from acquisitions or dispositions.

* The Company has excluded a quantitative reconciliation with respect to the Company’s 2026 guidance under the “unreasonable efforts” exception in Item 10(e)(1)(i)(B) of Regulation S-K. See "Non-GAAP Financial Measures" below for additional information.

Video Webcast

Management will host a video webcast on Thursday, October 29, 2026, at 8:30 a.m. (ET) to discuss results for Stagwell Inc. for the three and nine months ended September 30, 2026. The video webcast will be accessible at https://edge.media-server.com/mmc/p/qudoyxam/. An investor presentation has been posted on our website at www.stagwellglobal.com and may be referred to during the webcast.

A recording of the webcast will be accessible one hour after the webcast and available for ninety days at www.stagwellglobal.com.

Stagwell Inc.

Stagwell is the global challenger network transforming marketing through AI. We deliver scaled creative performance for the world's most ambitious brands, connecting culture-moving creativity with leading-edge technology to harmonize the art and science of marketing. Led by entrepreneurs, our specialists in 40+ countries are unified under a single purpose: to drive effectiveness and improve business results for our clients. Join us at www.stagwellglobal.com.

Contacts

For Investors:

Ben Allanson

IR@stagwellglobal.com

For Press:

Lena Petersen

PR@stagwellglobal.com

Non-GAAP Financial Measures

In addition to its reported results, Stagwell Inc. has included in this earnings release certain financial results that the Securities and Exchange Commission (“SEC”) defines as “non-GAAP Financial Measures.” Management believes that such non-GAAP financial measures, when read in conjunction with the Company's reported results, can provide useful supplemental information for investors analyzing period to period comparisons of the Company's results. Such non-GAAP financial measures include the following:

(1) Organic Net Revenue: “Organic net revenue growth (decline)” reflects the year-over-year change in the Company’s reported net revenue attributable to the Company’s management of the entities it owns. We calculate organic net revenue growth (decline) by subtracting the net impact of acquisitions (divestitures) and the impact of foreign currency exchange fluctuations from the aggregate year-over-year increase or decrease in the Company’s reported net revenue. The net impact of acquisitions (divestitures) reflects the year-over-year change in the

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Company’s reported net revenue attributable to the impact of all individual entities that were acquired or divested in the current and prior year. We calculate the impact of an acquisition as follows: (a) for an entity acquired during the current year, we present the entity’s current period reported revenue as the impact of the acquisition in the current year; and (b) for an entity acquired in the prior year, we present an amount equal to the entity’s current year net revenue for the same period during which we didn’t own the entity in the prior year as the impact of the acquisition in the current year. We calculate the impact of a divestiture as follows: (a) for a divestiture in the current year, we present the entity’s prior year net revenue for the same period during which we no longer owned it in the current year as impact of the divestiture in the current year; and (b) for a divestiture in the prior year, we present the entity’s prior year net revenue for the period during which we owned it in the prior year as impact of the divestiture in the current year. We calculate the impact of any acquisition or divestiture without adjusting for foreign currency exchange fluctuations. The impact of foreign currency exchange fluctuations reflects the year-over-year change in the Company’s reported net revenue attributable to changes in foreign currency exchange rates. We calculate the impact of foreign currency exchange fluctuations for the portion of the reporting period in which we recognized revenue from a foreign entity in both the current year and the prior year. The impact is calculated as the difference between (1) reported prior period net revenue (converted to U.S. dollars at historical foreign currency exchange rates) and (2) prior period net revenue converted to U.S. dollars at current period foreign exchange rates.

(2) Net New Business: Estimate of annualized revenue for new wins less annualized revenue for losses incurred in the period.

(3) Adjusted EBITDA: is defined as Net income (loss) attributable to Stagwell Inc. common shareholders excluding non-operating income or expense, income tax expense or benefit, equity in income or loss of non-consolidated entities and net income or loss attributable to noncontrolling and redeemable noncontrolling interest holders to achieve Operating income (loss), plus depreciation and amortization, stock-based compensation, deferred acquisition consideration adjustments, impairment and other losses, and other items. Other items primarily include restructuring, certain system implementation costs, working capital administrative fees, acquisition-related expenses, and other non-recurring income and expenses. Adjusted EBITDA for our reportable segments is reconciled to Operating income (loss), as Net income (loss) is not relevant for a reportable segment financial metric.

(4) Adjusted Diluted EPS: is defined as Adjusted Net Income (loss) attributable to Stagwell Inc. common and Class C shareholders, divided by the diluted weighted average shares outstanding. Adjusted Net Income represents net income (loss) attributable to Stagwell Inc. common and Class C shareholders, excluding amortization, impairment and other losses, stock-based compensation, deferred acquisition consideration adjustments, discrete tax items, and other items (as defined above), allocated between the two share classes based on their respective income allocation percentages using a normalized effective tax rate. The diluted weighted average shares outstanding includes the diluted weighted average common shares outstanding plus Class C common stock, par value $0.00001 per share (the “Class C Common Stock”) as if converted to shares of Class A Common Stock if not included because they were anti-dilutive.

(5) Free Cash Flow: defined as consolidated net cash flow from operations less cash outflow from capital expenditures and capitalized software, excluding material nonrecurring capital purchases. Free Cash Flow Conversion is the percentage of adjusted EBITDA.

Included in this earnings release are tables reconciling reported Stagwell Inc. results to arrive at certain of these non-GAAP financial measures.

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This document contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). The Company’s representatives may also make forward-looking statements orally or in writing from time to time. Statements in this document that are not historical facts, including, statements about the Company’s beliefs and expectations, future financial performance, growth, and future prospects, the Company’s strategy, business and economic trends and growth, technological leadership and differentiation, potential and completed acquisitions, anticipated and actual operating efficiencies and synergies and estimates of amounts for redeemable noncontrolling interests and deferred acquisition consideration, constitute forward-looking statements. Forward-looking statements, which are generally denoted by words such as “ability,” “aim,” “anticipate,” “assume,” “believe,” “better,” “build,” “consider,” “continue,” “could,” “depend,” “develop, “drive,” “enhance,” “estimate,” “evaluate,” “expand,” “expect,” “focus,” “forecast,” “future,” “grow,” “guidance,” “illustrative,” “improve,” “intend,” “likely,” “maintain,” “may,” “objective,” “ongoing,” “opportunity,” “optimize,” “outlook,” “plan,” “position,” “possible,” “potential,” “probable,” “project,” “realize,” “remain,” “scenario,” “seek,” “should,” “strategy,” “sufficient,” “support,” “target,” “will,” “would” or the negative of such terms or other variations thereof and terms of similar substance used in connection with any discussion of current plans, estimates and projections are subject to change based on a number of factors, including those outlined in this section.

Forward-looking statements in this document are based on certain key expectations and assumptions made by the Company. Although the management of the Company believes that the expectations and assumptions on which such forward-looking statements are based are reasonable, undue reliance should not be placed on the forward-looking statements because the Company can give no assurance that they will prove to be correct. The material assumptions upon which such forward-looking statements are based include, among others, assumptions with respect to general business, economic and market conditions, the competitive environment, anticipated and unanticipated tax consequences and anticipated and unanticipated costs. These forward-looking statements are based on current plans, estimates and projections, and are subject to change based on a number of factors, including those outlined in this section. These forward-looking statements are subject to various risks and uncertainties, many of which are outside the Company’s control. Therefore, you should not place undue reliance on such statements. Forward-looking statements speak only as of the date they are made, and the Company undertakes no obligation to update publicly any of them in light of new information or future events, if any.

Forward-looking statements involve inherent risks and uncertainties. A number of important factors could cause actual results to differ materially from those contained in any forward-looking statements. Such risk factors include, but are not limited to, the following:

•risks associated with international, national and regional unfavorable economic conditions, including the effect of changing tariffs and other trade policies, inflation and other macroeconomic factors that could affect the Company or its clients;

•demand for the Company’s services, which may precipitate or exacerbate other risks and uncertainties;

•inflation and actions taken by central banks to address inflation, including changes in interest rates;

•the Company’s ability to attract new clients and retain existing clients;

•the impact of a reduction in client spending and changes in client advertising, marketing and corporate communications requirements;

•financial failure of the Company’s clients;

•the Company’s ability to retain and attract key employees;

•the Company’s ability to compete in the markets in which it operates;

•the Company’s ability to achieve its cost saving initiatives;

•the Company’s implementation of strategic initiatives;

•the Company’s ability to remain in compliance with its debt agreements, and the Company’s ability to finance its contingent payment obligations when due and payable, including but not limited to those relating to redeemable noncontrolling interests, deferred acquisition consideration and profit interests;

•the Company’s ability to manage its growth effectively;

•the Company’s ability to identify and complete acquisitions or other strategic transactions that complement and expand the Company’s business capabilities and successfully integrate newly acquired businesses into the Company’s operations, retain key employees, and realize cost savings, synergies and other related anticipated benefits within the expected time period;

•the Company’s ability to identify and complete divestitures and to achieve the anticipated benefits therefrom;

•the Company’s ability to develop products incorporating new technologies, including augmented reality, artificial intelligence, and virtual reality, and realize benefits from such products;

•the Company’s use of artificial intelligence, including generative artificial intelligence, and its ability to realize anticipated efficiencies and other benefits from its investments in artificial intelligence and automation technologies, and changes in client demand for artificial intelligence-related services;

•adverse tax consequences for the Company, its operations and its stockholders, that may differ from the expectations of the Company, including that recent or future changes in tax laws, potential changes to corporate tax rates in the

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United States and disagreements with tax authorities on the Company’s determinations that may result in increased tax costs;

•adverse tax consequences in connection with the business combination that formed the Company in August 2021, including the incurrence of material Canadian federal income tax (including material “emigration tax”);

•the Company’s ability to maintain an effective system of internal control over financial reporting, including the risk that the Company’s internal controls will fail to detect misstatements in its financial statements, such as errors requiring out-of-period adjustments;

•the Company’s ability to accurately forecast its future financial performance and provide accurate guidance;

•the Company’s ability to protect client data from security incidents or cyberattacks;

•economic disruptions resulting from war and other economic and geopolitical tensions (such as the ongoing military conflicts in Iran and the Middle East, and between Russia and Ukraine), terrorist activities, natural disasters, public health events, and tariff and trade policies, including the resulting effects on client marketing spend in affected regions;

•stock price volatility; and

•foreign currency fluctuations.

Investors should carefully consider these risks and the additional risk factors described in more detail in our Annual Report on Form 10-K for the year ended December 31, 2025 (the “2025 Form 10-K”), filed with the Securities and Exchange Commission (the “SEC”) on March 13, 2026, and accessible on the SEC’s website at www.sec.gov, under the caption “Risk Factors,” in our subsequent Quarterly Reports on Form 10-Q and in the Company’s other SEC filings.

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SCHEDULE 1

STAGWELL INC. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS

(amounts in thousands, except per share amounts)

Three Months Ended September 30, Nine Months Ended September 30,

2026 2025 2026 2025

Revenue $ 816,027  $ 742,998  $ 2,306,477  $ 2,101,556

Operating expenses

Cost of services 511,698  470,937  1,488,293  1,342,240

Office and general expenses 206,942  166,422  611,323  528,845

Depreciation and amortization 48,300  44,260  136,395  127,635

Impairment and other losses 1,028  466  1,219  466

767,968  682,085  2,237,230  1,999,186

Operating Income 48,059  60,913  69,247  102,370

Other income (expenses):

Interest expense, net (23,993) (25,196) (69,587) (72,007)

Foreign exchange, net 2,244  (366) (172) (484)

Other, net

2,526  (2,032) 3,394  (2,143)

(19,223) (27,594) (66,365) (74,634)

Income before income taxes and equity in earnings of non-consolidated affiliates

28,836  33,319  2,882  27,736

Income tax expense 10,882  9,555  7,646  13,950

Income (loss) before equity in earnings of non-consolidated affiliates 17,954  23,764  (4,764) 13,786

Equity in income (loss) of non-consolidated affiliates 442  (1) 512  18

Net income (loss) 18,396  23,763  (4,252) 13,804

Net (income) loss attributable to noncontrolling and redeemable noncontrolling interests (277) 856  1,282  2,637

Net income (loss) attributable to Stagwell Inc. common shareholders $ 18,119  $ 24,619  $ (2,970) $ 16,441

Earnings (loss) per common share:

Basic $ 0.07  $ 0.10  $ (0.01) $ 0.08

Diluted $ 0.07  $ 0.09  $ (0.01) $ 0.04

Weighted average number of common shares outstanding:

Basic 244,666  255,952  247,131  210,139

Diluted 250,989  259,583  247,131  266,773

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SCHEDULE 2

STAGWELL INC.

UNAUDITED COMPONENTS OF NET REVENUE CHANGE

(amounts in thousands)

Net Revenue - Components of Change Change

Three Months Ended September 30, 2025 Foreign Currency Net Acquisitions (Divestitures)

Organic (1)

Total Change Three Months Ended September 30, 2026 Organic Total

Marketing Services $ 239,961  $ (176) $ (3,996) $ (18,108) $ (22,280) $ 217,681  (7.5) % (9.3) %

Digital Transformation 96,111  (233) 599  22,182  22,548  118,659  23.1  % 23.5  %

Media & Commerce 162,542  (432) —  (3,366) (3,798) 158,744  (2.1) % (2.3) %

Communications 96,631  72  7,657  19,324  27,053  123,684  20.0  % 28.0  %

The Marketing Cloud 26,571  304  —  28,808  29,112  55,683  108.4  % 109.6  %

Corporate, eliminations and other (7,294) 12  —  (3,152) (3,140) (10,434) 43.2  % 43.0  %

$ 614,522  $ (453) $ 4,260  $ 45,688  $ 49,495  $ 664,017  7.4  % 8.1  %

(1) See Non-GAAP Financial Measures section above for the definition of Organic Net Revenue.

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SCHEDULE 3

STAGWELL INC. AND SUBSIDIARIES

UNAUDITED COMPONENTS OF NET REVENUE CHANGE

(amounts in thousands)

Net Revenue - Components of Change Change

Nine Months Ended September 30, 2025 Foreign Currency Net Acquisitions (Divestitures)

Organic (1)

Total Change Nine Months Ended September 30, 2026 Organic Total

Marketing Services $ 692,760  $ 3,086  $ (7,740) $ (15,436) $ (20,090) $ 672,670  (2.2) % (2.9) %

Digital Transformation 277,091  (617) 3,826  45,734  48,943  326,034  16.5  % 17.7  %

Media & Commerce 459,911  1,855 4,185  (191) 5,849  465,760  —  % 1.3  %

Communications 285,447  1,041  10,271  36,114  47,426  332,873  12.7  % 16.6  %

The Marketing Cloud 77,364  2,863  —  30,576  33,439  110,803  39.5  % 43.2  %

Corporate, eliminations and other (15,735) (8) —  (12,173) (12,181) (27,916) 77.4  % 77.4  %

$ 1,776,838  $ 8,220  $ 10,542  $ 84,624  $ 103,386  $ 1,880,224  4.8  % 5.8  %

(1) See Non-GAAP Financial Measures section above for the definition of Organic Net Revenue.

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SCHEDULE 4

STAGWELL INC.

UNAUDITED SEGMENT OPERATING RESULTS

(amounts in thousands)

For the Three Months Ended September 30, 2026

Marketing Services Digital Transformation Media & Commerce Communications The Marketing Cloud Corporate, Elimination and Other Total

Revenue $ 255,445  $ 127,176  $ 176,857  $ 210,913  $ 55,825  $ (10,189) $ 816,027

Billable costs 37,764  8,517  18,113  87,229  142  245  152,010

Net revenue

217,681  118,659  158,744  123,684  55,683  (10,434) 664,017

Staff costs 126,795  73,620  95,403  59,939  16,572  13,288  385,617

Administrative costs 24,677  6,830  26,650  13,432  5,291  5,878  82,758

Unbillable and other costs, net 24,254  71  16,917  2,455  9,165  (2,056) 50,806

Adjusted EBITDA (1)

41,955  38,138  19,774  47,858  24,655  (27,544) 144,836

Stock-based compensation 11,717  3,675  1,230  4,221  400  7,677  28,920

Depreciation and amortization 11,841  6,256  8,601  6,925  5,995  8,682  48,300

Deferred acquisition consideration —  3,433  1,216  3,013  13  —  7,675

Impairment and other losses —  —  —  —  1,028  —  1,028

Other items, net (1)

3,161  318  3,712  701  986  1,976  10,854

Operating income (loss) $ 15,236  $ 24,456  $ 5,015  $ 32,998  $ 16,233  $ (45,879) $ 48,059

(1) See Non-GAAP Financial Measures section above for the definition of Adjusted EBITDA and Other items, net.

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SCHEDULE 5

STAGWELL INC. AND SUBSIDIARIES

UNAUDITED SEGMENT OPERATING RESULTS

(amounts in thousands)

For the Nine Months Ended September 30, 2026

Marketing Services Digital Transformation Media & Commerce Communications The Marketing Cloud Corporate, eliminations and other Total

Revenue $ 786,650  $ 349,756  $ 534,561  $ 552,767  $ 110,963  $ (28,220) $ 2,306,477

Billable costs 113,980  23,722  68,801  219,894  160  (304) 426,253

Net revenue

672,670  326,034  465,760  332,873  110,803  (27,916) 1,880,224

Staff costs 390,338  208,901  291,338  178,086  51,460  30,062  1,150,185

Administrative costs 74,036  20,966  74,902  40,634  18,003  10,932  239,473

Unbillable and other costs, net 75,327  381  45,820  6,291  23,962  (4,423) 147,358

Adjusted EBITDA (1)

132,969  95,786  53,700  107,862  17,378  (64,487) 343,208

Stock-based compensation 24,649  8,368  2,871  9,131  906  15,810  61,735

Depreciation and amortization 36,749  18,011  24,319  19,972  18,945  18,399  136,395

Deferred acquisition consideration (1,969) 13,535  9,854  4,773  573  —  26,766

Impairment and other losses —  —  191  —  1,028  —  1,219

Other items, net (1)

9,085  1,938  11,692  4,205  1,686  19,240  47,846

Operating income (loss) $ 64,455  $ 53,934  $ 4,773  $ 69,781  $ (5,760) $ (117,936) $ 69,247

(1) See Non-GAAP Financial Measures section above for the definition of Adjusted EBITDA and Other items, net.

Page 11

SCHEDULE 6

STAGWELL INC. AND SUBSIDIARIES

UNAUDITED SEGMENT OPERATING RESULTS

(amounts in thousands)

For the Three Months Ended September 30, 2025

Marketing Services Digital Transformation Media & Commerce Communications The Marketing Cloud Corporate, eliminations and other Total

Revenue $ 291,089  $ 104,445  $ 183,112  $ 145,086  $ 26,576  $ (7,310) $ 742,998

Billable costs 51,128  8,334  20,570  48,455  5  (16) 128,476

Net revenue

239,961  96,111  162,542  96,631  26,571  (7,294) 614,522

Staff costs 138,310  62,845  98,212  56,650  17,969  13,224  387,210

Administrative costs 26,835  6,981  24,225  12,516  3,068  (3,238) 70,387

Unbillable and other costs, net 17,187  401  15,554  2,344  6,898  (1,446) 40,938

Adjusted EBITDA (1)

57,629  25,884  24,551  25,121  (1,364) (15,834) 115,987

Stock-based compensation 4,240  934  1,111  1,594  200  4,567  12,646

Depreciation and amortization 12,820  5,932  7,524  6,363  6,455  5,166  44,260

Deferred acquisition consideration (500) 1,874  1,413  (3,716) (12,419) —  (13,348)

Impairment and other losses —  —  —  222  244  —  466

Other items, net (1)

2,200  432  4,153  1,624  1,284  1,357  11,050

Operating income (loss) $ 38,869  $ 16,712  $ 10,350  $ 19,034  $ 2,872  $ (26,924) $ 60,913

(1) See Non-GAAP Financial Measures section above for the definition of Adjusted EBITDA and Other items.

Page 12

SCHEDULE 7

STAGWELL INC.

UNAUDITED SEGMENT OPERATING RESULTS

(amounts in thousands)

For the Nine Months Ended September 30, 2025

Marketing Services Digital Transformation Media & Commerce Communications The Marketing Cloud Corporate, Elimination and Other Total

Revenue $ 817,294  $ 294,301  $ 509,416  $ 420,556  $ 77,380  $ (17,391) $ 2,101,556

Billable costs 124,534  17,210  49,505  135,109  16  (1,656) 324,718

Net Revenue 692,760  277,091  459,911  285,447  77,364  (15,735) 1,776,838

Staff costs 401,036  186,972  291,228  172,273  52,001  33,232  1,136,742

Administrative costs 83,338  19,599  70,963  37,042  11,582  (4,301) 218,223

Unbillable and other costs, net 61,801  1,178  44,486  7,103  18,399  (3,665) 129,302

Adjusted EBITDA (1)

146,585  69,342  53,234  69,029  (4,618) (41,001) 292,571

Stock-based compensation 14,832  3,081  3,302  6,760  541  15,627  44,143

Depreciation and amortization 39,556  17,250  22,211  19,349  17,436  11,833  127,635

Deferred acquisition consideration (4,784) 7,729  2,942  (4,879) (10,919) —  (9,911)

Impairment and other losses —  —  —  222  244  —  466

Other items, net (1)

3,133  1,493  11,210  3,686  2,609  5,737  27,868

Operating income (loss) $ 93,848  $ 39,789  $ 13,569  $ 43,891  $ (14,529) $ (74,198) $ 102,370

(1) See Non-GAAP Financial Measures section above for the definition of Adjusted EBITDA and Other items, net.

Page 13

SCHEDULE 8

STAGWELL INC.

UNAUDITED RECONCILIATION OF ADJUSTED DILUTED EARNINGS PER SHARE (NON-GAAP MEASURE)

(amounts in thousands, except per share amounts)

For the Three Months Ended September 30, 2026

GAAP

Adjustments (1)

Non-GAAP

Net income attributable to Stagwell Inc. common shareholders $ 18,119  $ 67,859  $ 85,978

Diluted - Weighted average number of shares outstanding

250,989  —  250,989

Diluted EPS and Adjusted Diluted EPS (1)

$ 0.07  $ 0.34

Adjustments to Net income

Amortization $ 42,884

Impairment and other losses 1,028

Stock-based compensation 28,920

Deferred acquisition consideration 7,675

Other items, net (2)

7,409

87,916

Adjustment to GAAP income tax expense (3)

(20,057)

$ 67,859

(1) See Non-GAAP Financial Measures section above for the definition of Adjusted Diluted EPS.

(2) Other items, net, primarily includes restructuring, certain system implementation costs, working capital administrative fees, acquisition-related expense, and other non-recurring expenses.

(3) Represents the difference between the income tax expense of $10.9 million at an effective tax rate of 37.7% on a GAAP basis and the income tax expense of $30.9 million at an effective tax rate of 26.5% on a non-GAAP basis. The difference reflects the tax impact of non-GAAP adjustments.

Page 14

SCHEDULE 9

STAGWELL INC. AND SUBSIDIARIES

UNAUDITED RECONCILIATION OF ADJUSTED DILUTED EARNINGS PER SHARE (NON-GAAP MEASURE)

(amounts in thousands, except per share amounts)

For the Nine Months Ended September 30, 2026

GAAP

Adjustments (1)

Non-GAAP

Net (loss) income attributable to Stagwell Inc. common shareholders $ (2,970) $ 193,633  $ 190,663

Diluted - Weighted average number of common shares outstanding

247,131  —  247,131

Diluted EPS and Adjusted Diluted EPS (1)

$ (0.01) $ 0.77

Adjustments to Net (loss) income

Amortization $ 119,962

Impairment and other losses 1,219

Stock-based compensation 61,735

Deferred acquisition consideration 26,766

Other items, net (2)

44,401

254,083

Adjustment to GAAP income tax expense (3)

(60,450)

$ 193,633

(1) See Non-GAAP Financial Measures section above for the definition of Adjusted Diluted EPS.

(2) Other items, net, primarily includes restructuring, certain system implementation costs, working capital administrative fees, acquisition-related expense, and other non-recurring expenses.

(3) Represents the difference between the income tax expense of $7.6 million at an effective tax rate of 265.3% on a GAAP basis and the income tax expense of $68.1 million at an effective tax rate of 26.5% on a non-GAAP basis. The difference reflects the tax impact of non-GAAP adjustments.

Page 15

SCHEDULE 10

STAGWELL INC.

UNAUDITED RECONCILIATION OF ADJUSTED DILUTED EARNINGS PER SHARE (NON-GAAP MEASURE)

(amounts in thousands, except per share amounts)

For the Three Months Ended September 30, 2025

GAAP

Adjustments (1)

Non-GAAP

Net income attributable to Stagwell Inc. common shareholders $ 24,619  $ 38,575  $ 63,194

Diluted - Weighted average number of common shares outstanding

259,583  —  259,583

Diluted EPS and Adjusted Diluted EPS (1)

$ 0.09  $ 0.24

Adjustments to Net income

Amortization

$ 38,707

Impairment and other losses 466

Stock-based compensation 12,646

Deferred acquisition consideration (13,348)

Other items, net (2)

13,333

51,804

Adjustment to GAAP income tax expense (3)

(13,229)

38,575

(1) See Non-GAAP Financial Measures section above for the definition of Adjusted Diluted EPS.

(2) Other items, net, primarily includes restructuring, certain system implementation costs, working capital administrative fees, acquisition-related expense, and other non-recurring expenses.

(3) Represents the difference between the income tax expense of $9.6 million at an effective tax rate of 28.7% on a GAAP basis and the income tax expense of $22.8 million at an effective tax rate of 26.5% on a non-GAAP basis. The difference reflects the tax impact of non-GAAP adjustments.

Page 16

SCHEDULE 11

STAGWELL INC. AND SUBSIDIARIES

UNAUDITED RECONCILIATION OF ADJUSTED DILUTED EARNINGS PER SHARE (NON-GAAP MEASURE)

(amounts in thousands, except per share amounts)

For the Nine Months Ended September 30, 2025

GAAP

Adjustments (1)

Non-GAAP

Net income attributable to Stagwell Inc. common shareholders $ 16,441  $ 134,175  $ 150,616

Net loss attributable to Class C shareholders (6,637) —  (6,637)

Net income attributable to Stagwell Inc. and Class C shareholders and adjusted net income $ 9,804  $ 134,175  $ 143,979

Diluted - Weighted average number of common shares outstanding

214,557  —  214,557

Weighted average number of shares of Class C Common Stock outstanding 52,216  —  52,216

Diluted - Weighted average number of shares outstanding

266,773  —  266,773

Diluted EPS and Adjusted Diluted EPS (1)

$ 0.04  $ 0.54

Adjustments to Net income

Amortization

$ 107,281

Impairment and other losses 466

Stock-based compensation 44,143

Deferred acquisition consideration (9,911)

Other items, net (2)

30,151

172,130

Adjustment to GAAP income tax expense (3)

(37,955)

$ 134,175

(1) See Non-GAAP Financial Measures section above for the definition of Adjusted Diluted EPS.

(2) Other items, net, primarily includes restructuring, certain system implementation costs, working capital administrative fees, acquisition-related expense, and other non-recurring expenses.

(3) Represents the difference between the income tax expense of $14.0 million at an effective tax rate of 50.3% on a GAAP basis and the income tax expense of $51.9 million at an effective tax rate of 26.5% on a non-GAAP basis. The difference reflects the tax impact of non-GAAP adjustments.

Page 17

SCHEDULE 12

STAGWELL INC. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED BALANCE SHEETS

(amounts in thousands)

September 30, 2026 December 31, 2025

ASSETS

Current Assets

Cash and cash equivalents $ 132,197  $ 104,537

Accounts receivable, net 772,787  735,752

Expenditures billable to clients 144,015  164,694

Other current assets 174,932  157,309

Total Current Assets 1,223,931  1,162,292

Fixed assets, net 70,083  73,081

Right-of-use assets - operating leases 189,243  213,576

Goodwill 1,598,491  1,595,238

Other intangible assets, net 795,689  834,248

Deferred tax assets 280,193  281,057

Other assets 53,812  55,055

Total Assets $ 4,211,442  $ 4,214,547

LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS ("RNCI"), AND SHAREHOLDERS’ EQUITY

Current Liabilities

Accounts payable $ 489,376  $ 548,320

Accrued media 228,612  239,490

Accruals and other liabilities 330,142  291,554

Advance billings 365,529  329,815

Current portion of lease liabilities - operating leases 55,073  55,386

Current portion of deferred acquisition consideration 42,871  15,446

Total Current Liabilities 1,511,603  1,480,011

Long-term debt 1,414,574  1,326,013

Long-term portion of deferred acquisition consideration 21,494  24,598

Long-term lease liabilities - operating leases 195,482  224,397

Deferred tax liabilities 53,899  54,726

Long-term tax receivable agreement liability 252,390  252,390

Other liabilities 30,456  51,077

Total Liabilities 3,479,898  3,413,212

Redeemable Noncontrolling Interests 21,247  24,968

Commitments, contingencies and guarantees

Shareholders' Equity

Common shares - Class A 245  252

Paid-in capital 697,402  744,463

Retained earnings 31,203  32,930

Accumulated other comprehensive loss (34,787) (19,252)

Stagwell Inc. Shareholders' Equity 694,063  758,393

Noncontrolling interests 16,234  17,974

Total Shareholders' Equity 710,297  776,367

Total liabilities, RNCI, and shareholders’ equity

$ 4,211,442  $ 4,214,547

Page 18

SCHEDULE 13

STAGWELL INC. AND SUBSIDIARIES

UNAUDITED SUMMARY CASH FLOW DATA

(amounts in thousands)

Nine Months Ended September 30,

2026 2025

Cash flows from operating activities:

Net (loss) income $ (4,252) $ 13,804

Adjustments to reconcile net loss to cash provided by operating activities:

Stock-based compensation 61,735  44,143

Depreciation and amortization 136,395  127,635

Amortization of right-of-use lease assets and lease liability interest

47,471  51,208

Impairment and other (gains) losses (2,226) (3,063)

Deferred income taxes 476  3,216

Adjustment to deferred acquisition consideration 26,766  (9,911)

Other, net 2,280  1,319

Changes in working capital:

Accounts receivable (51,575) (3,477)

Expenditures billable to clients 20,723  26,266

Other current assets (22,408) (53,377)

Accounts payable (50,059) (57,306)

Accrued expenses and other liabilities 5,297  (117,118)

Advance billings 35,360  67,964

Current portion of lease liabilities - operating leases (52,254) (59,414)

Deferred acquisition related payments (1,450) (1,176)

Net cash provided by operating activities

152,279  30,713

Cash flows from investing activities:

Capitalized software (75,855) (45,315)

Capital expenditures (27,405) (26,338)

Acquisitions, net of cash acquired (6,347) (6,179)

Other (4,303) (2,927)

Net cash used in investing activities

(113,910) (80,759)

Cash flows from financing activities:

Repayment of borrowings under revolving credit facility (1,533,426) (1,412,000)

Proceeds from borrowings under revolving credit facility 1,619,780  1,586,326

Shares repurchased and cancelled (90,716) (105,183)

Distributions to noncontrolling interests and RNCI (3,903) (5,018)

Payment of deferred consideration (337) (16,103)

Purchase of noncontrolling interest (450) —

Tax Receivables Agreement payment (2,554) —

Debt financing and other costs —  (3,795)

Net cash (used in) provided by financing activities

(11,606) 44,227

Effect of exchange rate changes on cash and cash equivalents 897  6,718

Net increase in cash and cash equivalents 27,660  899

Cash and cash equivalents at beginning of period 104,537  131,339

Cash and cash equivalents at end of period $ 132,197  $ 132,238

Page 19

EX-99.2

EX-99.2

Filename: a3q26earningspresentatio.htm · Sequence: 3

a3q26earningspresentatio

EARNINGS PRESENTATION Third Quarter 2026 OCTOBER 29 | 2026

This document contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). The Company’s representatives may also make forward-looking statements orally or in writing from time to time. Statements in this document that are not historical facts, including, statements about the Company’s beliefs and expectations, future financial performance, growth, and future prospects, the Company’s strategy, business and economic trends and growth, technological leadership and differentiation, potential and completed acquisitions, anticipated and actual operating efficiencies and synergies and estimates of amounts for redeemable noncontrolling interests and deferred acquisition consideration, constitute forward-looking statements. Forward-looking statements, which are generally denoted by words such as “ability,” “aim,” “anticipate,” “assume,” “believe,” “better,” “build,” “consider,” “continue,” “could,” “develop,” “drive,” “enhance,” “estimate,” “expect,” “focus,” “forecast,” “future,” “grow,” “guidance,” “illustrative,” “improve,” “intend,” “likely,” “maintain,” “may,” “ongoing,” “outlook,” “plan,” “position,” “possible,” “potential,” “probable,” “project,” “scenario,” “seek,” “should,” “target,” “will,” “would” or the negative of such terms or other variations thereof and terms of similar substance used in connection with any discussion of current plans, estimates and projections are subject to change based on a number of factors, including those outlined in this section. Forward-looking statements in this document are based on certain key expectations and assumptions made by the Company. Although the management of the Company believes that the expectations and assumptions on which such forward-looking statements are based are reasonable, undue reliance should not be placed on the forward-looking statements because the Company can give no assurance that they will prove to be correct. The material assumptions upon which such forward-looking statements are based include, among others, assumptions with respect to general business, economic and market conditions, the competitive environment, anticipated and unanticipated tax consequences and anticipated and unanticipated costs. These forward-looking statements are based on current plans, estimates and projections, and are subject to change based on a number of factors, including those outlined in this section. These forward- looking statements are subject to various risks and uncertainties, many of which are outside the Company’s control. Therefore, you should not place undue reliance on such statements. Forward-looking statements speak only as of the date they are made, and the Company undertakes no obligation to update publicly any of them in light of new information or future events, if any. Forward-looking statements involve inherent risks and uncertainties. A number of important factors could cause actual results to differ materially from those contained in any forward-looking statements. Such risk factors include, but are not limited to, the following: • risks associated with international, national and regional unfavorable economic conditions, including the effect of changing tariffs and other trade policies, inflation and other macroeconomic factors that could affect the Company or its clients; • demand for the Company’s services, which may precipitate or exacerbate other risks and uncertainties; • inflation and actions taken by central banks to counter inflation; • the Company’s ability to attract new clients and retain existing clients; • the impact of a reduction in client spending and changes in client advertising, marketing and corporate communications requirements; • financial failure of the Company’s clients; • the Company’s ability to retain and attract key employees; • the Company’s ability to compete in the markets in which it operates; • the Company’s ability to achieve its cost saving initiatives; • the Company’s implementation of strategic initiatives; • the Company’s ability to remain in compliance with its debt agreements and the Company’s ability to finance its contingent payment obligations when due and payable, including but not limited to those relating to redeemable noncontrolling interests, deferred acquisition consideration and profit interests; • the Company’s ability to manage its growth effectively; • the Company’s ability to identify and complete acquisitions or other strategic transactions that complement and expand the Company’s business capabilities and successfully integrate newly acquired businesses into the Company’s operations, retain key employees, and realize cost savings, synergies and other related anticipated benefits within the expected time period; • the Company’s ability to identify and complete divestitures and to achieve the anticipated benefits therefrom; • the Company’s ability to develop products incorporating new technologies, including augmented reality, artificial intelligence, and virtual reality, and realize benefits from such products; • the Company’s use of artificial intelligence, including generative artificial intelligence; • adverse tax consequences for the Company, its operations and its stockholders, that may differ from the expectations of the Company, including that recent or future changes in tax laws, potential changes to corporate tax rates in the United States and disagreements with tax authorities on the Company’s determinations that may result in increased tax costs; • adverse tax consequences in connection with the business combination that formed the Company in August 2021, including the incurrence of material Canadian federal income tax (including material “emigration tax”); • the Company’s ability to maintain an effective system of internal control over financial reporting, including the risk that the Company’s internal controls will fail to detect misstatements in its financial statements; • the Company’s ability to accurately forecast its future financial performance and provide accurate guidance; • the Company’s ability to protect client data from security incidents or cyberattacks; • economic disruptions resulting from war and other economic and geopolitical tensions (such as the ongoing military conflicts in Iran and the Middle East, and between Russia and Ukraine), terrorist activities, natural disasters, public health events, and tariff and trade policies; • stock price volatility; and foreign currency fluctuations. Investors should carefully consider these risk factors, other risk factors described herein, and the additional risk factors outlined in more detail in our 2025 Form 10-K, filed with the Securities and Exchange Commission (the “SEC”) on March 13, 2026, and accessible on the SEC’s website at www.sec.gov, under the caption “Risk Factors,” and in the Company’s other SEC filings. FORWARD LOOKING STATEMENTS & OTHER INFORMATION 2

DEFINITIONS OF NON-GAAP FINANCIAL MEASURES 3 In addition to its reported results, Stagwell Inc. has included in this earnings presentation certain financial results that the Securities and Exchange Commission (SEC) defines as "non-GAAP Financial Measures." Management believes that such non-GAAP financial measures, when read in conjunction with the Company's reported results, can provide useful supplemental information for investors analyzing period to period comparisons of the Company's results. Such non-GAAP financial measures include the following: Pro Forma Results: The Pro Forma amounts presented for each period were prepared by combining the historical standalone statements of operations for each of legacy MDC and SMG. The unaudited pro forma results are provided for illustrative purposes only and do not purport to represent what the actual consolidated results of operations or consolidated financial condition would have been had the combination actually occurred on the date indicated, nor do they purport to project the future consolidated results of operations or consolidated financial condition for any future period or as of any future date. The Company has excluded a quantitative reconciliation of Adjusted Pro Forma EBITDA to net income under the “unreasonable efforts” exception in Item 10(e)(1)(i)(B) of Regulation S-K. 1. Organic Net Revenue: “Organic net revenue growth (decline)” reflects the year-over-year change in the Company’s reported net revenue attributable to the Company’s management of the entities it owns. We calculate organic net revenue growth (decline) by subtracting the net impact of acquisitions (divestitures) and the impact of foreign currency exchange fluctuations from the aggregate year-over-year increase or decrease in the Company’s reported net revenue. The net impact of acquisitions (divestitures) reflects the year-over-year change in the Company’s reported net revenue attributable to the impact of all individual entities that were acquired or divested in the current and prior year. We calculate the impact of an acquisition as follows: (a) for an entity acquired during the current year, we present the entity’s current period reported revenue as the impact of the acquisition in the current year; and (b) for an entity acquired in the prior year, we present an amount equal to the entity’s current year net revenue for the same period during which we didn’t own the entity in the prior year as the impact of the acquisition in the current year. We calculate the impact of a divestiture as follows: (a) for a divestiture in the current year, we present the entity’s prior year net revenue for the same period during which we no longer owned it in the current year as impact of the divestiture in the current year; and (b) for a divestiture in the prior year, we present the entity’s prior year net revenue for the period during which we owned it in the prior year as impact of the divestiture in the current year. We calculate the impact of any acquisition or divestiture without adjusting for foreign currency exchange fluctuations. The impact of foreign currency exchange fluctuations reflects the year-over-year change in the Company’s reported net revenue attributable to changes in foreign currency exchange rates. We calculate the impact of foreign currency exchange fluctuations for the portion of the reporting period in which we recognized revenue from a foreign entity in both the current year and the prior year. The impact is calculated as the difference between (1) reported prior period net revenue (converted to U.S. dollars at historical foreign currency exchange rates) and (2) prior period net revenue converted to U.S. dollars at current period foreign exchange rates 2. Net New Business: Estimate of annualized revenue for new wins less annualized revenue for losses incurred in the period. 3. Adjusted EBITDA: defined as Net income (loss) attributable to Stagwell Inc. common shareholders excluding non-operating income or expense, income tax expense or benefit, equity in income or loss of non-consolidated entities and net income or loss attributable to noncontrolling and redeemable noncontrolling interest holders to achieve Operating income (loss), plus depreciation and amortization, stock-based compensation, deferred acquisition consideration adjustments, impairment and other losses, and other items. Other items primarily includes restructuring, certain system implementation costs, working capital administrative fees and acquisition-related expenses. Adjusted EBITDA for our reportable segments is reconciled to Operating income (loss), as Net income (loss) is not relevant for reportable segment financial metric 4. Adjusted Diluted EPS: defined as Adjusted Net Income (loss) attributable to Stagwell Inc. common and Class C shareholders, divided by the diluted weighted average shares outstanding. Adjusted Net Income represents net income (loss) attributable to Stagwell Inc. common and Class C shareholders, excluding amortization, impairment and other losses, stock-based compensation, deferred acquisition consideration adjustments, discrete tax items, and other items (as defined above), allocated between the two share classes based on their respective income allocation percentages using a normalized effective tax rate. The diluted weighted average shares outstanding includes the diluted weighted average common shares outstanding plus Class C common stock, par value $0.00001 per share (the “Class C Common Stock”) as if converted to shares of Class A Common Stock if not included because they were anti-dilutive 5. Free Cash Flow: defined as consolidated net cash flow from operations less cash outflow from capital expenditures and capitalized software, excluding material nonrecurring capital purchases. Free Cash Flow Conversion is the percentage of adjusted EBITDA. 6. Financial Guidance: The Company provides guidance on a non-GAAP basis as it cannot predict certain elements which are included in reported GAAP results. Included in this earnings presentation are tables reconciling reported Stagwell Inc. results to arrive at certain of these non-GAAP financial measures.

4 FINANCIAL Outlook Note: Guidance as of 10/29/2026. The Company has excluded a quantitative reconciliation with respect to the Company’s 2026 guidance under the “unreasonable efforts” exception in Item 10(e)(1)(i)(B) of Regulation S-K. See "Non-GAAP Financial Measures" on previous slide for additional information on definitions for Total Net Revenue, Adjusted EBITDA, Adjusted Diluted Earnings Per Share, and Free Cash Flow. Please refer to our investor website at stagwellglobal.com/investors for information on Forward Looking Statements and risk factors outlined in our 2025 Form 10-K, filed with the Securities and Exchange Commission (the “SEC”) on March 13 2026, and accessible on the SEC’s website at www.sec.gov, under the caption “Risk Factors,” and in the Company’s other SEC filings. Raise ADJUSTED EBITDA$490M - $540M IN ADJUSTED EARNINGS PER SHARE$1.07 - $1.21 Reiterate TOTAL NET REVENUE GROWTH8% - 12% EBITDA CONVERSION ON FREE CASH FLOW50% - 60%

5 OUR OPERATING Segments Marketing Services Scaling Brand Reach with AI-Powered Creativity Media & Commerce Delivering Data-Driven Outcomes for Brand Performance Communications Intelligent & Highly-Targeted Communications Strategies Digital Transformation Building & Designing Digital Platforms & Technology 2 3 4 5 The Marketing Cloud SaaS & DaaS Tools for the Modern Marketer 1 32% 18% 24% 18% 8% % OF 3Q26 NET REVENUE BY SEGMENT Notes: Figures may not foot due to rounding

THIRD QUARTER Highlights 6 ACCELERATING GROWTH Organic Revenue growth of 11% YoY to $816M, Organic Net revenue growth of 7% YoY to $664M • Performance driven by organic net revenue growth of 23% in Digital Transformation; Organic two-year stack of 30% continues improving trend and demonstrates accelerating momentum • Organic net revenue growth of 108% in The Marketing Cloud driven by accelerating Software & Enterprise Tech sales • Communications saw sequential improvement in organic net revenue growth to 20% in 3Q26 ahead of upcoming US Midterm elections CONTINUING NEW BUSINESS MOMENTUM $168M of net new business, Bringing LTM NNB to $586M • Secured largest ever multi-agency win with ServiceNow • Landed first major Federal Government contract with U.S. Central Command • $59M of committed revenue for Enterprise Tech Solutions year-to-date, including Stagwell Machines, more than double initial $25 million target IMPROVING CASH & COSTS 3Q26 adjusted EPS grew 42% to $0.34 • Adjusted EBITDA grew 25% to $145M, a 22% margin, 290bps higher than 3Q25 • Cash Flow from Operations improved $125M YoY* • Labor Ratio in 3Q26 stands at 57.6%, an improvement of 400bps versus the prior year period • Actioned $78 million to date of the $80-$100M of cost savings by YE26 announced in April 2025 $664MNET REVENUE 2.7xNET LEVERAGE RATIO $145MADJ. EBITDA Note: Net Leverage Ratio defined as Net Debt divided by LTM Adjusted EBITDA. * Excludes $3.1M pension settlement contribution. GAAP net cash provided by operating activities improved $121.6M YoY to $152.3M. TRANSFORMING THE BUSINESS Expanded strategic partnership with Palantir to strengthen Stagwell enterprise solutions and co-develop future tools • Launched new global media agency Stagwell Media, introducing a differentiated media model designed for agility, performance, and growth • Streamlined AI product go-to-market strategy with Stagwell AI, a unified portfolio of agentic technology solutions including Stagwell Machines for enterprises and NEW by Stagwell AI for SMBs • Acquired Freestar, an ad operation platform serving blue-chip online publishers like Fortune and The Boston Globe, to further our investment in owned media

7 Drivers

Mark Penn CHAIRMAN & CEO 8 Note: Two-Year Stack calculated as current period growth plus prior year same period growth. Chart represents Organic Net Revenue Growth for the Digital Transformation segment. Refer to “Definitions of Non-GAAP Financial Measures” on Slide 3 of this presentation for definition of “Organic Net Revenue”. “ Stagwell is fast becoming the #1 Marketing Transformation company in the world We are increasingly the mix of software and services I envisioned when I founded Stagwell 11 years ago. Our current valuation does not reflect our high growth, high margin business mix driven by our differentiated Digital Transformation & Enterprise Technology offerings. ” -24.5% -26.1% -15.2% -2.9% -0.3% 0.2% 11.0% 14.2% 23.6% 31.9% 29.2% 1Q24 2Q24 3Q24 4Q24 1Q25 2Q25 3Q25 4Q25 1Q26 2Q26 3Q26 TWO-YEAR ORGANIC NET REVENUE GROWTH STACK 923% CONSECUTIVE QUARTERS OF 2-YEAR STACK IMPROVEMENT ORGANIC NET REVENUE GROWTH VERSUS 3Q25

9 EXCEEDED ENTERPRISE TECHNOLOGY Target Preliminary Target Progress $25M $12M Identified Pipeline $59M Committed Revenue $71M Identified Pipeline + Committed Revenue

10 NEW BUSINESS Momentum $168M3Q26 NET NEW BUSINESS $586MLTM $31.3M3Q26ANNUALIZED NET REVENUE NOTABLE BUSINESS WINS & EXPANSIONS AVG. PER TOP 25 CLIENT

11 NEW BUSINESS Momentum $251M $324M $472M $586M 3Q23 3Q24 3Q25 3Q26 Note: Net New Business defined as estimate of annualized revenue for new wins less annualized revenue for losses incurred in the period . GROWTH FROM TOP 100 CUSTOMERS (VERSUS 3Q25) 29% INCREASE IN LTM NET NEW BUSINESS (VERSUS 3Q25) $114M

12 Financials

13 3Q26 & 9M26 Summary Combined Financials Note: Figures may not foot due to rounding. Nine Months Ended Sept 30Three Months Ended Sept 30 2025202620252026 $2,101,556$2,306,477$742,998$816,027Revenue 324,718426,253128,476152,010Billable Costs 1,776,8381,880,224614,522664,017Net Revenue 1,136,7421,150,185387,210385,617Staff costs 218,223239,47370,38782,758Administrative costs 129,302147,35840,93850,806Unbillable and other costs, net 292,571343,208115,987144,836Adjusted EBITDA 44,14361,73512,64628,920Stock-based compensation 127,635136,39544,26048,300Depreciation and amortization (9,911)26,766(13,348)7,675Deferred acquisition consideration 4661,2194661,028Impairment and other losses 27,86847,84611,05010,854Other items, net $102,370$69,247$60,913$48,059Operating income 16.5%18.3%18.9%21.8%Adjusted EBITDA margin (on net revenue)

14 3Q26 & 9M26 Net Revenue Note: Figures may not foot due to rounding. Nine Months Ended Sept 30, 2026Three Months Ended Sept 30, 2026 ChangeNet RevenueChangeNet Revenue $1,776,838$614,522September 30, 2025 4.8%84,6247.4%45,688Organic net revenue 0.6%10,5420.7%4,260Acquisitions (divestitures), net 0.5%8,220(0.1%)(453)Foreign currency 5.8%$103,3868.1%$49,495Total Change $1,880,224$664,017September 30, 2026

Note: Figures may not foot due to rounding. 3Q 15 YTD3Q26 Net Revenue Growth Organic Net Revenue Growth Net Revenue Growth Organic Net Revenue Growth 7.5%7.3%12.0%11.2%United States 7.2%6.3%(1.1%)(0.8%)United Kingdom (2.8%)(8.2%)(6.8%)(7.1%)Rest of World 5.8%4.8%8.1%7.4%TOTAL 80% 6% 14% % OF NET REVENUE 3Q26 & 9M26 NET REVENUE by Geography

YTD3Q26 Revenue Growth Organic Revenue Growth Revenue Growth Organic Revenue GrowthOPERATING SEGMENT 43.4%39.7%110.1%108.6%The Marketing Cloud 18.8%17.2%21.8%21.5%Digital Transformation 4.9%(0.4%)(3.4%)(3.2%)Media & Commerce 31.4%28.6%45.4%40.0%Communications (3.7%)(0.4%)(12.2%)(6.8%)Marketing Services 9.7%8.8%9.8%10.8%TOTAL 7% 15% 21% 26% 31% 3Q26 & 9M26 REVENUE GROWTH by Segment 3Q % OF TOTAL REVENUE

YTD3Q26 Net Revenue Growth Organic Net Revenue Growth Net Revenue Growth Organic Net Revenue GrowthOPERATING SEGMENT 43.2%39.5%109.6%108.4%The Marketing Cloud 17.7%16.5%23.5%23.1%Digital Transformation 1.3%0.0%(2.3%)(2.1%)Media & Commerce 16.6%12.7%28.0%20.0%Communications (2.9%)(2.2%)(9.3%)(7.5%)Marketing Services 5.8%4.8%8.1%7.4%TOTAL 8% 18% 24% 18% 32% 3Q26 & 9M26 NET REVENUE GROWTH by Segment 3Q % OF TOTAL NET REVENUE

YTD3Q26OPERATING SEGMENT N/AN/AThe Marketing Cloud 38.2%47.1%Digital Transformation 0.9%(19.5%)Media & Commerce 56.4%90.8%Communications (9.3%)(27.1%)Marketing Services 17.3%24.8%TOTAL 14% 22% 11% 28% 24% Adj. EBITDA* Growth Y/Y Note: Figures may not foot due to rounding. *Adjusted EBITDA percentages in pyramid does not adjust for corporate eliminations 3Q26 & 9M26 ADJ. EBITDA GROWTH by Segment 3Q % OF TOTAL ADJ. EBITDA

19 LIQUIDITY Note: Figures may not foot due to rounding. $ in Millions AVAILABLE LIQUIDITY (AS OF 09/30/2026) $750Commitment Under Credit Facility 324Drawn 16Letters of Credit $410Undrawn Commitments Under Facility 132Total Cash & Cash Equivalents $542TOTAL AVAILABLE LIQUIDITY

20 Note: Figures may not foot due to rounding. MAINTAINING Discipline AROUND DEFERRED ACQUISITION COSTS DAC DECREASED BY $13M FROM 3Q25 QUARTER-END BALANCE ($2M) FROM 3Q24 QUARTER-END BALANCE $70M FROM 3Q23 QUARTER-END BALANCE $134M $62M $77M $64M 3Q23 3Q24 3Q25 3Q26

21 3Q26 & YTD26 Adjusted Earnings Per Share Note: Numbers may not foot due to rounding. Nine Months Ended Sept 30, 2026 Three Months Ended Sept 30, 2026 NON-GAAPADJUSTMENTSREPORTED (GAAP)NON-GAAPADJUSTMENTSREPORTED (GAAP)$ and Shares in Thousands $ 190,663$193,633$ (2,970)$ 85,978$67,859$ 18,119Net income (loss) attributable to Stagwell Inc. common shareholders 247,131—247,131250,989—250,989Diluted - Weighted average number of common shares outstanding $ 0.77$ (0.01)$ 0.34$ 0.07Adjusted earnings per share (diluted) ADJUSTMENTS TO NET INCOME $ 119,962$ 42,884Amortization expense 1,2191,028Impairment and other losses 61,73528,920Stock-based compensation 26,7667,675Deferred acquisition consideration 44,4017,409Other items, net 254,08387,916Total add-backs (60,450)(20,057)Adjusted tax expense $193,633$67,859

22 3Q26 & YTD26 GAAP Consolidated Operating Performance Note: Numbers may not foot due to rounding. Nine Months Ended Sept 30Three Months Ended Sept 30 2025202620252026$ and Shares in Thousands $2,101,556$2,306,477$742,998$816,027Revenue 1,342,2401,488,293470,937511,698Cost of services 528,845611,323166,422206,942Office & general expenses 127,635136,39544,26048,300Depreciation and amortization 4661,2194661,028Impairment and other losses 102,37069,24760,91348,059Operating income (72,007)(69,587)(25,196)(23,993)Interest expense, net (484)(172)(366)2,244Foreign exchange, net (2,143)3,394(2,032)2,526Other, net (74,634)(66,365)(27,594)(19,223)Other income (expenses) 27,7362,88233,31928,836Income before income taxes and equity in earnings of non-consolidated affiliates 13,9507,6469,55510,882Income tax expense 13,786(4,764)23,76417,954Income (loss) before equity in earnings of non-consolidated affiliates 18512(1)442Equity in income (loss) of non-consolidated affiliates 13,804(4,252)23,76318,396Net income (loss) 2,6371,282856(277)Net (income) loss attributable to non-controlling & redeemable non-controlling interests $16,441$(2,970)$24,619$18,119Net income (loss) attributable to Stagwell Inc. common shareholders EARNINGS (LOSS) PER SHARE $0.08$(0.01)$0.10$0.07Basic $0.04$(0.01)$0.09$0.07Diluted WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING 210,139247,131255,952244,666Basic 266,773247,131259,583250,989Diluted

23 CAPITAL Structure 1. A portion of the DAC will be paid with approximately 2.4m shares assuming conversion as of 10/23/26. 2. Includes redeemable non-controlling interest and obligations in connection with profit interests held by employees. 3. Non-consolidated investments 4. Share Count does not include portion of DAC to be settled in stock. Pro Forma total share count as of 10/23/2026 would be 248.0m Class A shares, 3.5m shares to settle DAC and 23.2m share-based awards, for a total of 274.7m shares outstanding. NET DEBT & DEBT-LIKE ($M, AS OF 09/30/2026) $ 324Revolving Credit Facility 1,100Bonds 16NCI 64DAC1 29RNCI2 (27)Less: Investments3 (132)Less: Cash $ 1,374TOTAL NET DEBT & DEBT-LIKE SHARE COUNT4 (THOUSANDS, AS OF 10/23/2026) 247,973Class A 23,219Share-based awards 271,192DILUTED

24 SHARE COUNT Trajectory Note: Shares Outstanding includes all Class A, B and C shares outstanding as reported in the full-year earnings presentation related to the specified year. Class B and Class C shares are no longer extant.. 298.2M 292.6M 270.1M 266.5M 252.3M 246.4M 244.4M 244.6M YE21 YE22 YE23 YE24 YE25 1Q26 2Q26 3Q26 SHARES OUTSTANDING REDUCTION IN SHARE COUNT (VERSUS 3Q25) 10M REDUCTION IN SHARE COUNT (VERSUS YEAR-END 2021) 54M AVAILABLE TO REPURCHASE SHARES UNDER CURRENT PLAN $326M

25 ILLUSTRATIVE VALUATION SCENARIO Pivot to Digital Transformation & Software Numbers may not foot due to rounding Enterprise ValueMultiple2028 Adjusted EBITDA $ 2,23712.0x$ 186Digital Transformation $ 2,04015.0x$ 136The Marketing Cloud $ 2,7417.0x$ 392All Other $ 7,0179.8x$ 714TOTAL $ (466)(Net Debt) $ 6,551EQUITY VALUE 248/ Share Count $ 26.42STOCK PRICE Key Assumptions: • 4Q26 Segment Net Revenue applies 3Q26 year-over-year organic growth rates to 4Q25 actuals • Digital Transformation segment grows at a 15% Net Revenue CAGR from ‘26-’28; Segment margin of 32%, in-line with 3Q26 • The Marketing Cloud segment grows at a 35% Net Revenue CAGR from ‘26-’28; Segment margin of 45%, broadly in-line with 3Q26 • All Other grows at a 5% Net Revenue CAGR; Segment margin of 18%, broadly in-line with 3Q26 • Free Cash Flow Conversion of 55% in ‘27 and ‘28, in-line with FY26 Guidance • Share Count reflects Class A shares outstanding as of 10/23/26 • Model does not include potential M&A • All assumptions are believed to be reasonable but are illustrative and should not be interpreted as guidance for the current or future periods

26 CONTACT US: IR@STAGWELLGLOBAL.COM

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Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

+ Details

Name:

dei_SolicitingMaterial

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

+ Details

Name:

dei_WrittenCommunications

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

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Period Type:

duration