LETTER TO SHAREHOLDERS No. 100

SAINT-GOBAIN NEWS STRATEGY SAINT-GOBAIN, 360 YEARS OF HISTORY Few companies can boast such longevity, and yet, Saint-Gobain doesn’t look its age! With the “360 Years Young” campaign, the Group wishes to celebrate not only its unique heritage, but also the boldness, energy and pioneering spirit that drives it and turns it resolutely towards the future. 360 is a highly symbolic number. It illustrates a 360-degree global reach underpinned by a differentiating offering of sustainable solutions. It also reflects the scale of Saint-Gobain’s commitment to building a healthier, fairer and more inclusive future on a planetary scale. Celebrating this anniversary is therefore a way of raising SaintGobain’s brand profile and its image as worldwide leader in light and sustainable construction, but also of celebrating the 161,000 employees around the world and rallying them around a common vision. Between February and November, the Group will travel to nine destinations to mobilize employees, customers and partners around its commitment to a more sustainable future. These events will showcase innovative solutions and will be enhanced by the broadcast of the “360 Video Series”, a documentary series in nine 360-second episodes, exploring emblematic projects and innovative initiatives embodying the Group’s corporate purpose, “Making The World a Better Home”. To find out more, visit the “360 Years Young” page. the Group’s history. The archives date back to the founding of SaintGobain in 1665, 360 years ago. Since 1979, the Group has had a center dedicated to the collection, protection and promotion of the archives and heritage of its subsidiaries. Located in Blois, this center has nearly 80 linear kilometers of archives produced by Saint-Gobain and its subsidiaries. It manages a wide variety of media and documents tracing the Group’s history, including paper and digital archives, posters, plans, product samples, objects and works of art. The aim of the Archives Department is first and foremost to advise employees on good document archiving practices. Another of its roles is to manage the entire life cycle of documents, from their collection to their elimination at the end of their legal holding period (provided they are of no historical interest). The Archives Department also aims to promote the Group’s exceptional heritage through tours, exhibitions and publications. INNOVATION NEW LOW-CARBON CONCRETE EnviroMix®C-Clay is a range of admixtures recently launched by Chryso. It reduces the carbon footprint of calcined clay-based cements. This product responds to the technical challenges posed by these new cements, in particular their need for water. This range of admixtures has been designed to enhance concrete performance and adapt to the versatility of calcined clay-based cements. By incorporating these admixtures, calcined clay cements can reduce CO2 emissions by up to 40% compared with conventional Portland cement, a commonly used hydraulic cement containing at least 50% clinker. This makes EnviroMix®CClay a promising solution for more sustainable construction. INITIATIVES SCHOOLS FOR SUSTAINABLE CONSTRUCTION Bricklayers, plasterers, roofers and heating and sanitation installers are all key trades for energy renovation and sustainable construction. Starting in 2022, faced with a shortage of specialist workers, Saint-Gobain Distribution Bâtiment France (SGDB France), France’s leading distributor of building materials to professionals, took the initiative of developing training programs in these trades, with the support of its main banners. The aim of these training courses is to train new generations of craftspeople in sustainable construction, contribute to upgrading the status of building trades and address labor shortages on renovation sites. Buoyed by this ambition, and to enable it to have a greater impact with the various target populations involved, in September 2024 SGDB France decided to group its training programs within the Schools for Sustainable Construction. Since January 2022, over 45 classes/courses have been run across France, with an ambitious target of 2,500 apprentices trained by 2028. To find out more, visit the page dedicated to Schools for Sustainable Construction. CHALLENGES SAINT-GOBAIN ARCHIVES Saint-Gobain’s Archives Department was set up in 1974 and was one of the first archive departments to be created within a company. Its primary mission is historical: to preserve the documents that tell

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