SIKA TO ACQUIRE MBCC GROUP TO ACCELERATE GROWTH …

1 SIKA TO ACQUIRE MBCCGROUP TO ACCELERATE GROWTH AND REINFORCE POSITION AS SUSTAINABILITY CHAMPIONANALYST, INVESTOR, AND MEDIA PRESENTATIONZURICH, NOVEMBER11, 20211 KEY TRANSACTION HIGHLIGHTS2 MBCC GROUP AN ATTRACTIVE GLOBAL PLAYER3 ACQUISITION IS HIGHLY COMPLEMENTARY4 WORKING TOGETHER FOR A SUSTAINABLE FUTURE5 VALUE CREATION AND FINANCIAL CONSIDERATIONS6 PROCESS AND SUMMARYAGENDA21. KEY TRANSACTION HIGHLIGHTSKEY TRANSACTION HIGHLIGHTS4 MBCC GROUP is one of the most recognized companies in construction chemicals worldwide with sales of approximately CHF billion (EUR billion) Enterprise value of CHF billion represents a EV/pro forma 2022E EBITDA multiple with expected annual synergies of CHF 160 180 million bringing the multiple down to EV/EBITDA Transaction is highly complementary across almost all of Sika s core technologies, applications and solutions Acquisition is accretive to Sika s earnings per share from the first full year post closing The combined company will drive the sustainability transformation of the construction industry further and faster Transaction is subject to regulatory approval.

2 Sika is confident that all required clearances will be obtained. Closing targeted for the second half of 20222. MBCC GROUP AN ATTRACTIVE GLOBAL PLAYERMBCC GROUP AT A GLANCEA LEADING COMPANY IN CONSTRUCTION CHEMICALS WORLDWIDE647%53%Key Figures 42%32%26%AmericasEuropeAMEAPC onstruction SystemsAdmixture SystemsCHF ,500 EmployeesSales By RegionSales By Segment130 Production Sites>60 CountriesKey Facts MBCC GROUP is a global manufacturer of construction chemicals including concrete admixtures, tile adhesives, flooring systems, waterproofing systems, and PU sealants The company operates via two core business segments: Admixtures Systems (ready-mix, site-mix, precast & manufactured concrete products, cement additives, underground construction) Construction Systems (cementitious mortars, concrete repair & protection, flooring systems, tile adhesives, waterproofing systems, sealants) Headquartered in Mannheim, GermanyMBCC GROUP AT A GLANCEPORTFOLIO OF STRONG BRANDS AND PRODUCTS IN KEY COUNTRIESMain Brands Tile fixing & floor laying Performance flooring waterproofing Repair & protect Sealants Performance grouts Specialities SegmentsAdmixture SystemsConstruction Systems Concrete production Concrete placing and hardening Building lifetime expansion Underground construction47%53%Top 10 countriesUSAG ermanyJapanChinaCanadaFranceMexicoItaly7 RussiaTurkey3.

3 ACQUISITION IS HIGHLY COMPLEMENTARYSTRENGTHENING FOOTPRINT ACROSS ALL REGIONSSIKA TO REACH SALES IN EXCESS OF CHF13 BN IN salesSika and MBCC GROUP sales* Sales** GROUP in CHF bn(**) Includes sales of Global Business(*) Last Twelve Months Sep-212,000 people36 PlantsAmericas3,400 people42 PlantsEMEA2,100 people52 PlantsAPACMBCC GROUP ALIGNS WELL WITH SIKA S 5 CORE TECHNOLOGIESACQUISITION ADDS TO TECHNOLOGY MIX1014%26%21%12%27%42%32%2%15%9%21%28%1 6%13%22%=+Concrete SystemsCementitious SystemsThermoplastics SystemsCoating SystemsAdhesive SystemsPro-formaSEVEN OF EIGHT TARGET MARKETS WILL PROFIT FROM ACQUISITIONALL TARGET MARKETS ACHIEVING SALES BETWEEN CHF 1-2 BILLION11 ConcreteExtension of product portfolio with tunneling products and unique accelerator technology (MasterX-seed)WaterproofingIncreased access to tunneling for Sika s membranes due to MBCC GROUP s strong position in underground construction RoofingAddition of bituminous membranes and liquid applied membranes mainly in MexicoFlooringAddition of strong Ucretebrand and product range to portfolioSealing & BondingImproved position in facade sealants and floor covering solutions Engineered RefurbishmentStrengthening of Sika s product range with MasterEmaco(Repair mortars) and Masterflow(Grouts) productsBuilding FinishingFurther improvement in tile setting (mainly DACH) and facade position (mainly North America) Industry12 SolutionsChannelSupply ChainSIKA AND MBCC GROUPCOMPLEMENTARITY IN MANY WAYSC omplementarity in many countries, regions, and product ranges.

4 Combination will lead to a very balanced offering. Customers will benefit from a stronger solution portfolio and an enhanced and more efficient distribution network across all construction SIKA AND MBCC GROUP ARE HIGHLY COMPLEMENTARY COMBINED PRODUCT RANGE COVERS WIDER SET OF PROJECT NEEDSU nderground ConstructionOffshore Wind Turbine Installation12 SikaplanPVC membrane for waterproofing as well as other waterproofing products such as Waterbars, Combiflex, etcMBCC GROUP UGC organization has a strong position in in underground construction, incl. products for shotcrete, fibers, injections MasterFlowGrouts specialized for offshore wind turbine installations (DNV GL certified)Sika Power epoxy-based toughened adhesive to produce extra-long bladesSIKA AND MBCC GROUP ARE HIGHLY COMPLEMENTARY COMBINED PRODUCT RANGE COVERS WIDER SET OF PROJECT NEEDSC oncrete ProductionFloor Covering ApplicationsMBCC GROUP markets, under the Thomsitbrand, adhesives for both wood floor and luxury vinyl tileSikafloorLevel self-leveling screeds for both new build and renovation applications 34 Sika admixtures and solutions for concrete include Sika ViscoCrete, and the new patented reCO2verprocess for recycled concrete MBCC GROUP has a range of admixtures including GleniumSuperplasticizers.

5 MasterEaseand the patented accelerator MasterX-SeedSIKA AND MBCC GROUP ARE HIGHLY COMPLEMENTARY EXAMPLE DISTRIBUTION STRENGTHS IN DACH REGIONMBCC GROUP strength in distribution business Sika sells primarily through specialty distributors PCI with strong position in Builders Merchants and Home Centers Sika to increase presence across all distribution categories PCI strong brand with good reputation among end usersPCI as accelerator for Sika s DACH distribution business 159025 Sika Germany7510 PCID irect sales(%)Distribution sales(%)SIKA AND MBCC GROUP ARE HIGHLY COMPLEMENTARY STRENGTHENED PRODUCT RANGE IN MANY COUNTRIESE xample: JapanExample: MexicoStrong in Sealing & Bondingand Roofing Strong in Concrete and Eng. Refurbishment Strong in WaterproofingStrong in Concrete, Roofing, Eng. Refurbishment and Building Finishing 1216 MBCC GROUP admixture plantsSika admixture plants MBCC GROUP waterproofing plantsSika waterproofing plantsSupply Chain Wind GroutsSIKA AND MBCC GROUP ARE HIGHLY COMPLEMENTARY INCREASED CUSTOMER PROXIMITY PRODUCTION OF WIND GROUTS2 Supply Chain Joint Solutions1 MBCC GROUP produces offshore wind grouts in Belgium, Sika has no internal production 17 MBCC GROUP main PU plant is located in COSika s main PU plant is located in NJMBCC GROUP expansion joint plant (WBA)Sika expansion joint plant (Emseal) Sika production locations for onshore wind groutsSika s acrylate and PU production in Mexico4.

6 WORKING TOGETHER FOR A SUSTAINABLE FUTURESUSTAINABILITY REGULATIONS TO BOOST SIKA S GROWTH MODELSTRONG LONG-TERM MARKET POTENTIAL FOR SIKA19 InfrastructureHigher buildingstandardsRepairandrefurbishmentS IKA HAS SOLUTIONS FOR ALL MARKETSE merging marketsDevelopingmarketsMaturemarketsSik a smarketpotential Long-term market potential SikaSustainability regulationsSIKA REINFORCES POSITION AS SUSTAINABILITY CHAMPION WORKING TOGETHER FOR A SUSTAINABLE FUTURE 20 MBCC GROUP enablessignificant CO2 reductionsand cost savingsthrough formulationoptimization, 50% faster curing timeandlower curingtemperaturesMBCC GROUP flooring systems drive cost efficiency, enabling up to 7% lower lifecycle cost and increased service life of up to 50 yearsOur flooring systems drive costefficiency, enabling up to 7% lowerlifecycle cost & increased service lifeofup to 50yearsComplementary portfolios enhance sustainable product offering to our global customer baseSika has improved formulations of tile adhesives allowing for a 35% reduction of clinker and CO2 Sika has developed a recycling process to allow demolished concrete to sequestrate CO2and be separated into its original componentsMasterX-SeedSika reCO2verMasterTopSikaCeramSIKA REINFORCES POSITION AS SUSTAINABILITY CHAMPION WORKING TOGETHER FOR A SUSTAINABLE FUTURE 21 SIKAOUR GOAL70% of sales is generated by products that have a positive effect on sustainability80% of sales will be generated by products that have a positive effect on sustainabilityMBCC GROUP > 35%1of MBCC GROUP `s products today are sustainably advanced(1)

7 MBCC GROUP press release October 1, 2020 Sustainability SynergiesThrough the combination, we will reinforce our complementary range of sustainable products and services across the entire construction life cycle for the benefit of customers, employees, shareholders, and coming generations. 5. VALUE CREATION AND FINANCIAL CONSIDERATIONS Financial parameters Enterprise value of CHF billion (EUR billion ) Annual synergies of CHF 160 180 million EV / 2022E pro-forma EBITDA; EV / EBITDA incl. full run-rate synergies EPS accretive as of first full financial year post closing Financing Fully committed bridge loan facility Long-term funding over combination of cash-on-hand, bank loans, and capital market instruments Commitment to maintain strong investment grade rating (A-)FINANCIAL CONSIDERATIONS23 ElevenRun-rate synergiesPro-formaFINANCIAL BENEFITS FROM TRANSACTIONSYNERGIES TO DRIVE SUSTAINABLE MARGIN ENHANCEMENT241) Pro-formaSept 21 run-rate2) Full run-rate synergies (EBITDA contribution) once fully phased in440c.

8 19%c. 15%c. 20%2 EBITDA (CHF mn)EBITDA margin160-1802,350 2,370+35%1,7501 REVENUE AND COST SYNERGIESEXPECTED RUN-RATE SYNERGIES OF CHF 160-180 MNBY 202525 Cost SynergiesRevenue Synergies to Better Serve Our Customers Economies of scale in procurement, formulation efficiency Enhanced efficiency in supply chain & logistics Operating leverage and increased efficiency in SG&A Additional revenue synergies expected to be realized through customer proximity and enhanced supply chain Strong cross-selling opportunities of products and solutions in multiple geographies and channels The acquisition will reinforce Sika s sustainability capabilities Expected run-rate synergies of CHF 160-180 expected by 2025 Synergies expected to ramp-up over coming years Expected costs to realize synergies of CHF 200 mnover next three years6. PROCESS AND SUMMARYSUMMARYACQUISITION ACCELERATES SIKA S GROWTH STRATEGY27 The combined company will drive the sustainability transformation of the construction industry further and faster.

9 It will focus on new product improvements and will be a key enabler for sustainable solutions. Transaction is highly complementary and adds to Sika s offerings in four of five core technologies and seven of eight Sika Target Markets Value enhancing acquisition with EV of CHF billion, representing a EV/pro forma 2022E EBITDA multiple with expected annual synergies of CHF 160 180 million bringing the multiple down to EV/EBITDA The acquisition is subject to regulatory approval. Sika is confident it will obtain all clearances and will actively engage with the authorities. Expected closing in second half of 2022Q&AFORWARD-LOOKING STATEMENT29 This presentation contains certain forward-looking statements. These forward-looking statements may be identified by words such as expects , believes , estimates , anticipates , projects , intends , should , seeks , future or similar expressions or by discussion of, among other things, strategy, goals, plans or intentions.

10 Various factors may cause actual results to differ materially in the future from those reflected in forward-looking statements contained in this presentation, among others: Fluctuations in currency exchange rates and general financial marketconditions Interruptions inproduction Legislative and regulatory developments and economic conditions Delay or inability in obtaining regulatory approvals or bringing products to market Pricing and product initiatives ofcompetitors Uncertainties in the discovery, development or marketing of new products or new uses of existing products, including without limitationnegativeresults of research projects, unexpected side-effects of pipeline or marketedproducts Increased government pricingpressures Loss of inability to obtain adequate protection for intellectual propertyrights Litigation Loss of key executives or otheremployees Adverse publicity and newscoverageAny statements regarding earnings per share GROWTH are not a profit forecast and should not be interpreted to mean that Sika s earnings or earnings per share for this year or any subsequent period will necessarily match or exceed the historical published earnings or earnings per share marketed products discussed in this presentation, please see information on our websit