Exhibit 99.1

Materialise reports third quarter 2026 results

Regulated information¹

LEUVEN, Belgium--(BUSINESS WIRE)—October 28, 2026 -- Materialise NV (Euronext & NASDAQ:MTLS), a global leader in 3D-printed medical devices and software, and a pioneer in additive manufacturing software and services, today announced its financial results for the third quarter ended September 30, 2026.

Highlights – Third Quarter 2026

CEO Brigitte de Vet-Veithen commented, “In the third quarter of this year consolidated revenue grew to EUR 67.7 million, representing 4.9% year-on-year growth when excluding last year’s revenue from the recent divestitures in our Materialise Manufacturing segment. Our Materialise Medical segment continued to deliver double-digit growth, while our Materialise Manufacturing segment, when adjusted for its recent divestitures, confirmed its renewed revenue growth driven by strong performance in its aerospace & defense focus markets. While we increased R&D investments in our Medical segment targeting additional growth opportunities, and despite non-recurring costs, we delivered once more a positive net result in the third quarter of this year. At the same time we significantly improved our net cash position driven by strong operational cash flow while we continued to buy back shares under our share repurchase program. Our recurring positive free cash flow further strengthened our balance sheet giving us the opportunity to continue investing in innovation and future growth.”

Third quarter 2026 Results

Total revenue for the third quarter of 2026 increased by 2.1% to 67,670 kEUR from 66,259 kEUR for the third quarter of 2025. Adjusted EBIT amounted to 2,485 kEUR for the third quarter of 2026 compared to 2,918 kEUR for the 2025 period. The Adjusted EBIT margin (Adjusted EBIT divided by total revenue) for the third quarter of 2026 was 3.7%, compared to 4.4% for the third quarter of 2025. Adjusted EBITDA for the third quarter of 2026 amounted to 8,046 kEUR compared to 8,428 kEUR for the 2025 period.

Revenue from our Materialise Medical segment increased 9.7% to 36,542 kEUR for the third quarter of 2026 compared to 33,296 kEUR for the same period in 2025. Segment Adjusted EBITDA amounted to 10,015 kEUR for the third quarter of 2026 compared to 10,199 kEUR for the corresponding period, while the segment Adjusted EBITDA margin was 27.4% compared to 30.6% for the third quarter of 2025.

Revenue from our Materialise Software segment was 9,864 kEUR for the third quarter of 2026 compared to 10,286 kEUR for the same quarter last year. Segment Adjusted EBITDA amounted to 1,463 kEUR compared to 1,801 kEUR for the corresponding period, while the segment Adjusted EBITDA margin was 14.8% compared to 17.5% for the prior-year period.

Revenue from our Materialise Manufacturing segment was 21,266 kEUR for the third quarter of 2026 compared to 22,677 kEUR for the third quarter of 2025. Adjusted for the recent divestments segment revenue increased 1.5% compared to the prior-year period. Segment Adjusted EBITDA improved to (257) kEUR compared to (845) kEUR for the same period in 2025, while the segment Adjusted EBITDA margin was (1.2)% compared to (3.7)% for the third quarter of 2025.

Gross profit increased 3.7% to 39,035 kEUR for the third quarter of 2026 compared to 37,651 kEUR for the same period last year, while gross profit as a percentage of revenue was 57.7% compared to 56.8% for the third quarter of 2025.

Research and development (“R&D”), sales and marketing (“S&M”), and general and administrative (“G&A”) expenses increased, in the aggregate, by 7.8% to 38,830 kEUR for the third quarter of 2026 from 36,019 kEUR for the third quarter of 2025 mainly driven by 11.9% higher R&D spend.

¹        The enclosed information constitutes regulated information as defined in the Belgian Royal Decree of 14 November 2007 regarding the duties of issuers of financial instruments which have been admitted for trading on a regulated market.

Net other operating income was 1,137 kEUR compared to 890 kEUR for the third quarter of 2025. Net operating income in the third quarter of 2026 includes non-recurring charges of 184 kEUR from the impairment of inventory related to the transfer of the Eyewear assets.

Operating profit was 1,343 kEUR compared to 2,522 kEUR for the third quarter of 2025, while net financial result was 160 kEUR, compared to (121) kEUR for the third quarter of 2025.

The third quarter of 2026 contained net tax expenses of (120) kEUR, compared to net tax expenses of (553) kEUR in the third quarter of 2025.

As a result of the above, net profit for the third quarter of 2026 was 1,383 kEUR, compared to 1,848 kEUR for the same period in 2025.

Cash flow from operating activities for the third quarter of 2026 amounted to 9,666 kEUR compared to 10,359 kEUR for the same period in 2025. Total cash used for capital expenditures for the third quarter of 2026 amounted to 2,146 kEUR and free cash flow after operating and investing activities was 11,419 kEUR.

At September 30, 2026, cash and cash equivalents increased to 153,529 kEUR from 133,918 kEUR at December 31, 2025. Gross debt increased to 71,056 kEUR from 63,113 kEUR at December 31, 2025. As a result, our net cash position increased by 11,668 kEUR to 82,473 kEUR compared to 70,805 kEUR as of December 31, 2025. At the end of the third quarter of 2026 Materialise had repurchased 1,426,784 own shares for a total amount (excluding transaction cost) of 7,482 kEUR (8,698 kUSD) under its previously announced share buy-back program.

Net shareholders' equity at September 30, 2026 increased to 255,809 kEUR compared to 255,482 kEUR at December 31, 2025.

2026 Guidance

Mrs. de Vet-Veithen concluded, “Also in the last quarter of this calendar year we intend to maintain clear focus on strategy execution, targeted investments in our focus areas, continued cost control and cash generation positioning Materialise for further profitable growth. As a result, we are reconfirming our full-year 2026 revenue guidance of 273,000 to 283,000 kEUR, fully absorbing the unfavorable revenue impact of the recent RapidFit and Eyewear divestitures. We are also reaffirming the full-year Adjusted EBIT guidance that we increased in August to a range of 12,000 to 14,000 kEUR reflecting the strength of our execution and our continued discipline in managing costs and capital, while we intensify our R&D investments to capture accelerating market opportunities.”

Non-IFRS Measures

Materialise uses EBIT, EBITDA, Adjusted EBIT and Adjusted EBITDA as supplemental financial measures of its financial performance, including for purposes of monitoring compliance with financial covenants, supporting discussions with financing institutions, and meeting reporting requirements to our banks. EBIT is calculated as net profit plus income taxes, financial expenses (less financial income) and shares of profit or loss in a joint venture. EBITDA is calculated as net profit plus income taxes, financial expenses (less financial income), shares of profit or loss in a joint venture and depreciation and amortization. Adjusted EBIT and Adjusted EBITDA are determined by adding to EBIT and EBITDA, respectively (i) share-based compensation expenses, (ii) acquisition expenses related to business combinations or divestiture-related expenses, (iii) impairments and revaluation of fair value due to business combinations and (iv) costs incurred in relation to corporate initiatives, restructurings or reorganizations that are of a non-recurring nature. Management believes these non-IFRS measures to be important measures as they exclude the effects of items which primarily reflect the impact of financing decisions and, in the case of EBITDA and Adjusted EBITDA, long term investment, rather than the performance of the company’s day-to-day operations. The company also uses segment Adjusted EBITDA and segment Adjusted EBITDA margin to evaluate the performance of its three business segments. As compared to net profit, these measures are limited in that they do not reflect the cash requirements necessary to service interest or principal payments on the company’s indebtedness and, in the case of EBITDA and Adjusted EBITDA, these measures are further limited in that they do not reflect the periodic costs of certain capitalized tangible and intangible assets used in generating revenues in the company’s business, or the changes associated with impairments. Management evaluates such items through other financial measures such as financial expenses, capital expenditures and cash flow provided by operating activities. The company believes that these measurements are useful to measure a company’s ability to grow or as a valuation measurement. The company’s calculation of EBIT, EBITDA, Adjusted EBIT and Adjusted EBITDA may not be comparable to similarly titled measures reported by other companies. EBIT, EBITDA, Adjusted EBIT and Adjusted EBITDA should not be considered as alternatives to net profit or any other performance measure derived in accordance with IFRS. The company’s presentation of EBIT, EBITDA, Adjusted EBIT and Adjusted EBITDA should not be construed to imply that its future results will be unaffected by unusual or non-recurring items.

Exchange Rate

This document contains translations of certain euro amounts into U.S. dollars at specified rates solely for the convenience of readers. Unless otherwise noted, all translations from euros to U.S. dollars in this document were made at a rate of EUR 1.00 to USD 1.1355, the reference rate of the European Central Bank on September 30, 2026.

Conference Call and Webcast

Materialise will hold a conference call and simultaneous webcast to discuss its third quarter financial results of 2026 on Wednesday, October 28, 2026, at 8:30 a.m. ET/1:30 p.m. CET. Company participants on the call will include Brigitte de Vet-Veithen, Chief Executive Officer and Koen Berges, Chief Financial Officer. A question-and-answer session will follow management’s remarks.

To access the call by phone, please click the link below at least 15 minutes prior to the scheduled start time and you will be provided with dial-in details. Participants can choose to dial in or receive a call to connect to Materialise’s conference call.

The conference call will also be broadcast live over the Internet with an accompanying slide presentation, which can be accessed on the company’s website at https://investors.materialise.com/. The webcast of the conference call will be archived on the company's website for one year.

About Materialise

Materialise NV incorporates more than three decades of 3D printing experience into a range of software solutions and 3D printing services that empower sustainable 3D printing applications. Our open, secure, and innovative end-to-end solutions enable flexible industrial manufacturing and mass personalization in various industries — including healthcare, automotive, aerospace, art and design, wearables, and consumer goods. Headquartered in Belgium and with branches worldwide, Materialise NV combines the largest group of software developers in the industry with one of the world's largest and most complete 3D printing facilities. For additional information, please visit: www.materialise.com.

Cautionary Statement on Forward-Looking Statements

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, regarding, among other things, our intentions, beliefs, assumptions, projections, outlook, analyses or current expectations, plans, objectives, strategies and prospects, both financial and business, including statements concerning, among other things, our estimates for the current fiscal year’s revenue and Adjusted EBIT, our results of operations, cash needs, capital expenditures, expenses, financial condition, liquidity, prospects, divestitures, growth and strategies (including how our business, results of operations and financial condition could be impacted by the current armed geopolitical conflicts around the world and governmental responses thereto, inflation, increased labor, energy and materials costs), policy changes resulting from the U.S. presidential administration, changes in tariffs and trade restrictions, and the trends and competition that may affect the markets, industry or us. Such statements are subject to known and unknown uncertainties and risks. When used in this press release, the words “estimate,” “expect,” “anticipate,” “project,” “plan,” “intend,” “believe,” “forecast,” “will,” “may,” “could,” “might,” “aim,” “should,” and variations of such words or similar expressions are intended to identify forward-looking statements. These forward-looking statements are based upon the expectations of management under current assumptions at the time of this press release. These expectations, beliefs and projections are expressed in good faith and the company believes there is a reasonable basis for them. However, the company cannot offer any assurance that our expectations, beliefs and projections will actually be achieved. By their nature, forward-looking statements involve risks and uncertainties because they relate to events, competitive dynamics and industry change, and depend on economic circumstances that may or may not occur in the future or may occur on longer or shorter timelines than anticipated. We caution you that forward-looking statements are not guarantees of future performance and involve known and unknown risks, uncertainties and other factors that are in some cases beyond our control. All of the forward-looking statements are subject to risks and uncertainties that may cause the company's actual results to differ materially from our expectations, including risk factors described in the company's most recent annual report on Form 20-F filed with the U.S. Securities and Exchange Commission. There are a number of risks and uncertainties that could cause the company's actual results to differ materially from the forward-looking statements contained in this press release.

The company is providing this information as of the date of this press release and does not undertake any obligation to update any forward-looking statements contained in this press release as a result of new information, future events or otherwise, unless it has obligations under the federal securities laws to update and disclose material developments related to previously disclosed information.

Consolidated income statements (Unaudited)

Consolidated statements of comprehensive income (Unaudited)

Consolidated statement of financial position (Unaudited)

Consolidated statement of cash flows (Unaudited)

Reconciliation of Net Profit (Loss) to EBITDA and Adjusted EBITDA (Unaudited)

(1) Share-based compensation expense represents the cost of equity-settled and share-based payments to employees.

(2) Non-recurring costs related to corporate initiatives, restructurings or reorganizations.

(3) Impairments represent the impairment of tangible and intangible assets and inventory of RapidFit NV and Eyewear resulting from the transfer of the assets to their respective management teams.

(4) Divestitures-related expenses represent fees and costs in connection with the divestitures of RapidFit and Eyewear.

Reconciliation of Net Profit (Loss) to EBIT and Adjusted EBIT (Unaudited)

(1) Share-based compensation expense represents the cost of equity-settled and share-based payments to employees.

(2) Non-recurring costs related to corporate initiatives, restructurings or reorganizations.

(3) Impairments represent the impairment of tangible and intangible assets and inventory of RapidFit NV and Eyewear resulting from the transfer of the assets to their respective management teams.

(4) Divestitures-related expenses represent fees and costs in connection with the divestitures of RapidFit and Eyewear.

Segment P&L (Unaudited)

(1) Unallocated segment adjusted EBITDA consists of corporate research and development and corporate other operating income (expense), and the added share-based compensation expenses, acquisition expenses related to business combinations or divestiture-related expenses, impairments and revaluation of fair value of business combinations and non-recurring costs related to corporate initiatives, restructurings and reorganizations that are included in Adjusted EBITDA and that are not allocated to the reporting segments .

Reconciliation of Net Profit (Loss) to Segment adjusted EBITDA (Unaudited)

(1) Impairments represent the impairment of tangible and intangible assets and inventory of RapidFit NV and Eyewear resulting from the transfer of the assets to their respective management teams.

(2) Costs related to restructuring activities and organizational changes within specific reported business segments, including personnel-related and other associated expenses.