YIT Oyj — Major Shareholding Notification 2022

May 3, 2022

Disclosure 407977

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 3 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 3 May 2022 received an announcement under Chapter 9, Section 5 and 6 of the Securities Markets Act, according to which the holding of Nordea Bank Abp has exceeded the threshold of 5 per cent. According to the announcement, the holding had exceeded the threshold on 29 April 2022. According to the announcement, the total number of YIT shares owned directly or through financial instruments by Nordea Bank Abp is 5.50%. 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 Nordea Bank Abp 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 3.95 1.55 5.50 211,099,853 situation on the date on which threshold was crossed or reached Position of - - - 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 ISIN code and (if voting possible) rights Direct Indirect Direct Indirect (SMA (SMA 9:6 and (SMA 9:5) (SMA 9:6 and 9:7) 9:5) 9:7) FI 8,260,573 78,674 3.91 0.04 0009800643 SUBTOTAL A 8,339,247 3.95 B: Financial instruments according to SMA 9:6a: Type of Expiration Exercise/ Physical Number of % of shares financial date Conversion or shares and voting instrument Period cash and voting rights settlement rights OTC Equity 24 May 20 May Physical 3,272,341.6 1.55 Forward 2022 2022 SUBTOTAL B 3,272,341.6 1.55 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 and voting through financial instruments of rights both Nordea Bank Abp Under 5% Under 5% 5.50 Nordea Life Holding AB Under 5% - Under 5% Nordea Life Assurance Under 5% - Under Finland Ltd 5% Nordea Livförsäkring Under 5% - Under Sverige AB (publ) 5% Livsforsikringsselskapet - - - Nordea Liv Norge AS 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