Attendance at the Annual General Meeting

Only shareholders entered in the share register as at April 4,2019 are entitled to vote at the Annual General Meeting. Shareholders have the option of voting in person,through a proxy, or remotely by issuing electronic authorizations and instructions to the independent proxy.

Shareholders entered in the share register up to and including April 1, 2019 as shareholders with voting rights will receive, together with the invitation to the Annual General Meeting, a reply card that theycan use to order the admission card and the voting material or to issue a proxy. Further, they will receive information on E-Voting together with the individual one-time code to access the voting website www.gvmanager.ch/sika. Shareholders are requested to send the reply card to the share register of Sika AG (Sika AG, c/o Devigus Shareholder Services, Birkenstrasse 47, 6343 Rotkreuz) by April 4, 2019 at the latest. Shareholders whose registration in the share register with voting rights is made on or after April 2,2019 and who wish to attend the Annual General Meeting are asked to contact the share register of Sika AG.

No further registrations of voting rights will be carried out in the period from April 5 to April 9, 2019. Shareholders who are registered with voting rights as at April 5, 2019, but who sell their shares prior to the Annual General Meeting, will lose their shareholder rights in respect of the shares sold. Shareholderswhose shareholding changes between March 25, 2019 and April 4, 2019 and who have already received an admission card will not receive a new admission card but a voting device with their current shareholding at the admission counter of the Annual General Meeting. Proxies will be changed automatically.

Representation by proxy at the Annual General Meeting

Shareholders not attending the Annual General Meeting in person may be represented by another shareholder with voting rights or by the independent proxy Mr. Jost Windlin, attorney-at-law and notary, Zwicky, Windlin & Partner. In order to grant proxy to a representative, the shareholder must fully specify the relevant person on the reply card. Shareholders are requested to send the reply card to the share register of Sika AG (Sika AG, c/o Devigus Shareholder Services, Birkenstrasse 47, 6343 Rotkreuz) by April 4, 2019 at the latest. The admission card and the voting material will then be sent to the proxy.

Remote electronic voting by issuing authorizations and instructions to the independent proxy

Shareholders may cast their votes remotely by issuing electronic authorizations and instructions to the independent proxy at www.gvmanager.ch/sika. Shareholders may use the online proxy voting, or change any instructions they may have issued electronically, up to but no later than 11.59 p.m. on Friday, April 5, 2019.