Update on Sweco’s intended mixed exchange and cash offer for Grontmij

This is a joint press release by Sweco AB and Grontmij N.V. pursuant to the
provisions of Section 7, paragraph 1 sub a of the Decree on Public Takeover Bids
(Besluit openbare biedingen Wft) in connection with the intended public offer by
Sweco AB for all the issued and outstanding ordinary shares in the capital of
Grontmij N.V. This announcement does not constitute an offer, or any
solicitation of any offer, to sell, buy or subscribe for any securities in Sweco
AB or Grontmij N.V. Any offer will be made only by means of an offer memorandum.
This announcement is not for release, publication or distribution, in whole or
in part, in or into, directly or indirectly, Canada, Japan and the United
States.
Stockholm, Sweden, and De Bilt, the Netherlands, 26 June 2015

On 1 June 2015, Sweco AB (“Sweco”) (Nasdaq Stockholm; ticker symbol SWECA and
SWECB) and Grontmij N.V. (“Grontmij”) (Euronext Amsterdam; ticker symbol GRONT)
jointly announced that they had reached a conditional agreement in connection
with an intended public offer by Sweco for all issued and outstanding ordinary
shares of Grontmij (the “Offer”).

Pursuant to Section 7, Paragraph 1 sub a of the Dutch Decree on Public Takeover
Bids (Besluit openbare biedingen Wft), which requires a public announcement
containing a status update on an intended public offer within four weeks after
its initial public announcement, Sweco and Grontmij provide the following joint
status update.

Sweco and Grontmij confirm that they are making good progress on the
preparations for the Offer. Sweco has submitted a request for review and
approval of its offer memorandum with the Netherlands Authority for the
Financial Markets (Stichting Autoriteit Financiële Markten). Sweco will publicly
announce the availability of the approved and finalised offer memorandum and
commencement of the offer period. As communicated before, based on the required
steps and subject to the necessary approvals, settlement of the Offer is
expected to take place in the second half of 2015.

Further information

Sweco has filed a prospectus relating to the admittance to trading of new Sweco
B shares to be issued as part of the Offer consideration with the Swedish
Financial Supervisory Authority. Shareholders of Grontmij and other investors
are requested to read the prospectus and the offer memorandum (including any
amendments or supplements thereto) regarding the Offer when they become
available, since these documents will contain important information.

The information in this press release is not intended to be complete. For
further information explicit reference is made to the offer memorandum, which is
expected to be published in July 2015. This offer memorandum will contain
further details regarding the Offer.

General restrictions

This announcement is for information purposes only and does not constitute an
offer or an invitation to acquire or dispose of any securities or investment
advice or an inducement to enter into investment activity. This announcement
does not constitute an offer to sell or issue or the solicitation of an offer to
buy or acquire the securities of Grontmij in any jurisdiction.

Forward looking statements

This announcement includes certain "forward-looking" statements. These
statements are based on the current expectations of Sweco and Grontmij and are
naturally subject to uncertainty, changes and circumstances. Forward-looking
statements include, without limitation, statements typically containing words
such as "intends", "expects", anticipates", "targets", "estimates" and words of
similar impact.
CONTACT DETAILS

Sweco

Communications Director

Åsa Barsness

M: +46 (0)703823686

E: asa.barsness@sweco.se

Grontmij

Investor Relations

Michèle Negen

M: +31 (0)6 20712874

E: michele.negen@grontmij.com
About Sweco

Sweco is the Nordic region’s leading provider of services for sustainable
engineering and design. Our 9,000 engineers, architects and environmental
experts develop value-creating solutions for our clients and for society. Sweco
is among the ten largest consulting engineering companies in Europe, carrying
out assignments in 80 countries annually throughout the world. The company has
annual sales of approximately SEK 9 billion and is listed on Nasdaq Stockholm.
Sweco is required to disclose the above information under the provisions of the
Securities Market Act and/or the Financial Instruments Trading Act. The
information was submitted for publication on 26 June 2015, 8.45 a.m. CET.

For further information, visit www.swecogroup.com.

About Grontmij

Grontmij is a leading European company in the consulting & engineering industry
with world class expertise in the fields of energy, highways & roads,
sustainable buildings and water. Grontmij's leading principle is sustainability
by design. This enables Grontmij's professionals to support customers in
developing the built and natural environment. Established in 1915, Grontmij is
listed on the Euronext Amsterdam stock exchange.

For further information, visit www.grontmij.com.