YIT Oyj — Major Shareholding Notification 2018

Feb 1, 2018

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

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 February 1, 2018 at 3:15 p.m.
YIT Corporation has on February 1, 2018 received an announcement under Chapter
9, Section 5 of the Securities Markets Act, according to which the holding of
PNT Group Oy has exceeded the threshold of 5 per cent.

As a result of the completion of the merger of YIT and Lemminkäinen on February
1, 2018 the ownership of PNT Group Oy in Lemminkäinen was transferred to YIT.
Lemminkäinen’s shareholders received as merger consideration 3.6146 new shares
in YIT for each share in Lemminkäinen owned by them. The previous ownership of
PNT Group Oy in Lemminkäinen on January 31, 2018 was 4,231,948 shares,
corresponsing to the share of 18.23% from Lemminkäinen’s entire share stock.
According to the notification, the holding of PNT Group Oy in YIT Corporation is
15,296,799, corresponsing to the share of 7.25% from YIT’s entire share stock.

YIT has one share series, each share entitling to one vote. As a result of the
registration of the execution of the merger, the total number of YIT shares
increased to 211,099,853 shares.

Total positions of PNT Group Oy subject to the notification:

+----------------+-------------+------------------+-------+-----------+
|Date Feb 1, 2018|% shares and |% of shares and |Total |Total |
| |voting |voting rights |of both|number of |
| |rights (total|through financial |in % |shares |
| |of A)  |instruments (total|(A+B)  |and voting |
| | |of B)  | |rights of |
| | | | |issuer |
+----------------+-------------+------------------+-------+-----------+
|Resulting   |7.25% (round)| | |15296799 |
|situation on the| | | | |
|date on | | | | |
|which threshold | | | | |
|was crossed or | | | | |
|reached  | | | | |
+----------------+-------------+------------------+-------+-----------+
|Position   of | | | |see |
|previous | | | |additional |
|notification | | | |information|
|(if applicable) | | | |below |
+----------------+-------------+------------------+-------+-----------+

Notified details of the resulting situation on the date on which the threshold
was crossed:

A: Shares and voting rights:

+-------------+--------+----------+-------------+--------------------+
|Class/type of|Number |% of shares and voting rights   |
|shares |of | |
|  ISIN code |shares | |
|(if |and | |
|possible)  |voting | |
| |rights   | |
+-------------+--------+----------+-------------+--------------------+
| |Direct  |Indirect  |Direct  |Indirect  |
| |  (SMA |  (SMA 9:6|  (SMA 9:5)  |  (SMA 9:6 and 9:7) |
| |9:5)  |and 9:7)  | | |
+-------------+--------+----------+-------------+--------------------+
|FI 0009800643|15296799| |7.25% (round)| |
+-------------+--------+----------+-------------+--------------------+
|SUBTOTAL A |15296799 |7.25% (round) |
+-------------+--------+----------+-------------+--------------------+

B: Financial instruments according to SMA 9:6a:

+-------------+----------+----------+-------------+---------+----------------+
|Type of |Expiration|Exercise/ |Physical or |Number of|% of shares and |
|financial |date    |Conversion|cash |shares |voting rights   |
|instrument   | |Period    |settlement   |and | |
| | | | |voting | |
| | | | |rights   | |
+-------------+----------+----------+-------------+---------+----------------+
| | | | | | |
+-------------+----------+----------+-------------+---------+----------------+
| | | |SUBTOTAL B | | |
+-------------+----------+----------+-------------+---------+----------------+

Person subject to the notification obligation is not controlled by any natural
person or legal entity and does not control any other undertaking(s) holding
directly or indirectly an interest in the (underlying) issuer.

Additional information:

The previous ownership of PNT Group Oy in Lemminkäinen Corporation, LEM 1S
FI0009900336, 4,231,948 shares; 18.23% ownership. On the completion date of the
merger, February 1, 2018, the share exchange ratio: 3.6146.

For further information please contact:

Hanna Jaakkola, Vice President, Investor Relations, YIT Corporation, tel. +358
40 5666 070, hanna.jaakkola@yit.fi

YIT CORPORATION

Hanna Jaakkola

Vice President, Investor Relations

Distribution: NASDAQ OMX, major media, www.yitgroup.com

YIT is the largest Finnish and significant North European construction company.
We develop and build apartments, business premises and entire areas. We are also
specialised in demanding infrastructure construction and paving.  Together with
our customers our 10,000 professionals are creating more functional, more
attractive and more sustainable cities and environments. We work in 11
countries: Finland, Russia, Scandinavia, the Baltic States, the Czech Republic,
Slovakia and Poland. The new YIT was born when over 100-year-old YIT Corporation
and Lemminkäinen Corporation merged on February 1, 2018. Our combined annual
revenue for 2017 was over EUR 3.8 billion. YIT Corporation's share is listed on
Nasdaq Helsinki Oy. www.yitgroup.com