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PUBLIC EXCHANGE OFFER FOR THE SHARES OF LAFARGE

INITIATED BY HOLCIM

PRESENTED BY SOCIETE GENERALE AND UBS

AND

HOLCIM LTD SHARES TO COMMENCE TRADING ON EURONEXT PARIS ON 9 JULY 2015

PRESS RELEASE ON THE PUBLICATION OF THE OFFER DOCUMENT, INFORMATION RELATING IN PARTICULAR TO THE LEGAL, FINANCIAL AND ACCOUNTING CHARACTERISTICS OF HOLCIM LTD AND OF THE PROSPECTUS RELATING TO ADMISSION OF THE EXISTING HOLCIM LTD SHARES AND, AS THE CASE MAY BE, HOLCIM LTD SHARES TO BE ISSUED IN CONNECTION WITH THE PUBLIC EXCHANGE OFFER, TO TRADING ON THE REGULATED MARKET OF EURONEXT PARIS

OFFER PERIOD: 25 trading days

This press release has been prepared and disseminated by Holcim Ltd in accordance with the provisions of article 231-27 2°, article 231-28 and article 212-27 II of the general regulations of the Autorité des marchés financiers (the “AMF”).

IMPORTANT NOTICE

If the conditions provided in article L. 433-4 III of the monetary and financial code and articles 237-14 et seq. of the AMF’s general regulations are met at the end of the public exchange offer acceptance period, Holcim Ltd reserves the rights to request the AMF to implement, within a three-month period after the end of this public exchange offer acceptance period, a squeeze-out procedure to effect the transfer to Holcim Ltd of all the Lafarge S.A. shares not tendered to the public exchange offer. The implementation of such squeeze-out will be subject to examination by the AMF.

In accordance with the provisions of article L. 621-8 of the monetary and financial code and article 231-23 of its general regulations, the AMF has, in application of its declaration of conformity of the public exchange offer dated 28 May 2015, affixed visa No. 15-226 dated 28 May 2015 on the offer document prepared by Holcim Ltd concerning the public exchange offer relating to the shares of Lafarge S.A. (the “Offer”).

In accordance with the provisions of article 231-28 of the AMF’s general regulations, information relating in particular to the legal, financial and accounting characteristics of Holcim Ltd was filed with the AMF on the 28 May 2015 and made available to the public as of the 29 May 2015.

These information and the offer document approved by the AMF are available on the website of the AMF (www.amf-france.org) and of Holcim Ltd (www.holcim.com), and are also available free of charge upon request at:

Zürcherstrasse 156

8645 Jona

Switzerland

Corporate Finance

75886 Paris Cedex 18

France

69 Boulevard Haussmann

75008 Paris

France

Prior to the opening of the Offer acceptance period, the AMF and Euronext Paris will respectively publish a notice announcing the opening of the Offer and the timetable (avis d’ouverture et de calendrier) and a notice announcing the terms and timetable of the Offer.

Availability to the public of the Listing Prospectus

Copies of the prospectus on which the AMF affixed the visa number 15-233 on 28 May 2015 (the “Prospectus”), which consists of the registration document, registered with the AMF on 11 May 2015 under number I.15-034 (the “Registration Document”), a securities note (the “Securities Note”) and a summary of the Prospectus (included in the Securities Note) and any supplement thereto may be obtained free of charge from Holcim Ltd’s registered office (Zürcherstrasse 156, 8645 Jona, Switzerland) and can be downloaded from Holcim Ltd’s website (www.holcim.com). Copies of the Prospectus and any supplement thereto may be obtained free of charge from Lafarge S.A.’s registered office (61, rue des Belles Feuilles, 75116 Paris, France) and can be downloaded from Lafarge S.A.’s website (www.lafarge.com) and from the AMF’s website (www.amf-france.org).

Attention is drawn to the risk factors pertaining to LafargeHolcim Ltd in Section 3 of the Registration Document – Part I, those pertaining to Holcim Ltd in Section 2 of the Registration Document – Part II, those pertaining to Lafarge S.A. in Section 5.1 of the Lafarge 2014 Document de Référence incorporated by reference to the Registration Document and those pertaining to the Holcim Ltd shares and, going forward, LafargeHolcim Ltd shares described in Section 2 of the Securities Note. The materialisation of one or more of the risks described therein may have a material adverse effect on the Holcim group’s and, going forward, on the LafargeHolcim group’s business, results of operations, financial condition and prospects, as well as on the market price of Holcim Ltd shares and, going forward, the LafargeHolcim Ltd shares.

Disclaimer

This press release was prepared for informational purpose only. This press release does not constitute an offer to the public nor is it intended to be transmitted in any other country than France. The transmission of this press release, the Offer and its acceptance may be subject to specific regulations or restrictions in certain countries. The Offer is not directed to any persons subject to such restrictions, neither directly nor indirectly, and may not be accepted in any way from a country where the Offer would be subject to such restrictions. Consequently, persons in possession of this press release are responsible for informing themselves on potential applicable local restrictions and for complying with such restrictions. Holcim Ltd accepts no responsibility for any violation of such restrictions by any person.

View source version on businesswire.com: http://www.businesswire.com/news/home/20150529005270/en/

Persons in Charge of Investors RelationsHolcim Investor RelationsPhone: +41 58 858 87 87Fax: +41 58 858 80 09E-Mail: investor.relations@holcim.comorMichel R. GerberHead Investor RelationsPhone: +41 58 858 86 63orSwetlana IodkoInvestor Relations OfficerPhone +41 58 858 87 46