YIT Oyj — Major Shareholding Notification 2022

May 13, 2022

Disclosure 408769

YIT - Major shareholder announcements

Notification according to Chapter 9, Section 10 of the Securities Markets Act of change in holdings in YIT Corporation shares

YIT Corporation Stock exchange release 13 May 2022 at 2:30 p.m. Notification according to Chapter 9, Section 10 of the Securities Markets Act of change in holdings in YIT Corporation shares YIT Corporation has on 13 May 2022 received an announcement under Chapter 9, Section 5 and 6a of the Securities Markets Act from Virala Oy Ab. According to the announcement, the total number of YIT shares owned directly or through financial instruments by Virala Oy Ab and its chain of controlled undertakings was 16.58% on 12 May 2022. YIT has one share series, each share entitling to one vote. The total number of YIT’s shares is 211,099,853 shares. Total positions of Virala Oy Ab subject to the notification: % shares % of shares and Total Total number of shares and voting rights of and voting rights of voting through both issuer rights financial in % (total instruments (A+B) of A) (total of B) Resulting 15.83 0.75 16.58 211,099,853 situation on the date on which threshold was crossed or reached Position of 12.22 3.18 15.40 previous notification (if applicable) Notified details of the resulting situation on the date on which the threshold was crossed: A: Shares and voting rights: Class/type Number of % of shares and voting rights of shares shares and ISIN code voting (if rights possible) Direct Indirect Direct Indirect (SMA 9:5) (SMA 9:6 and (SMA 9:5) (SMA 9:6 and 9:7) 9:7) FI0009800643 - 33,416,800 - 15.83 SUBTOTAL A 33,416,800 15.83 B: Financial instruments according to SMA 9:6a: Type of Expiration Exercise/ Physical or Number of % of shares financial date Conversion cash shares and voting instrument Period settlement and rights voting rights Forward 20 May 20 May Physical 1,576,100 0.75 contract 2022 2022 SUBTOTAL B 1,576,100 0.75 Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entity: Name % of shares % of shares and voting rights Total of both and voting through financial instruments rights Virala - 0.75 1,576,100 Oy Ab Atine - - - Group Oy Nidoco - - - AB Tercero 15.83 - 33,416,800 Invest AB Further information: Tommi Järvenpää, Vice President, Investor Relations, YIT Corporation, tel. +358 40 576 0288, tommi.jarvenpaa@yit.fi YIT Corporation Tommi Järvenpää Vice President, Investor Relations Distribution: Nasdaq Helsinki, major media, www.yitgroup.com YIT is the largest Finnish and a significant North European development and construction company. For 110 years, we have been creating better living environments for our customers: functional homes for sustainable living, future -proof public and commercial buildings and infrastructure for smoother flow of people, businesses and society. We employ 5,500 professionals in nine countries: Finland, Sweden, Norway, Estonia, Latvia, Lithuania, the Czech Republic, Slovakia and Poland. Our revenue in 2021 was EUR 2.7 billion. YIT Corporation's share is listed on Nasdaq Helsinki Oy. www.yitgroup.com