The first call for shareholders of Ailleron S.A. to submit documentsof shares for their compulsory dematerialisation

The Management Board of Ailleron S.A. with its registered seat in Kraków(the "Company", the "Issuer"), in connection with Art. 16 of the Act ofAugust 30, 2019 amending the Code of Commercial Companies and other acts(Journal of Laws of 2019, item 1798, as amended from Journal of Laws of2020, item 875), shares in the Company in a tangible (paper) form to bedeposited at the Company's seat in Krakow at ul. Prof. MichałaŻyczkowskiego 20, 31-864 Kraków, on business days (from Monday toFriday) from 8.00 a.m. to 4.00 p.m., until December 23, 2020, in orderto dematerialize them. Submission of documents after this date inaccordance with the Regulations of the National Depository forSecurities may result in the registration of shares in the securitiesdepository with a delay, i.e. after March 1, 2021.

The legal basis for this call is the Act of August 30, 2019 amending theCommercial Companies Code and certain other acts (Journal of Laws of2019, item 1798, as amended from Journal of Laws of 2020, item 875) onthe basis of which the obligatory dematerialisation of all shares of theCompany is introduced. Dematerialisation of shares means replacing thetangible form of shares with an entry in a shareholders' registry.

Pursuant to the introduced changes to the regulations, the binding forceof tangible documents of shares issued by the Company expires on March1, 2021.

After that date, the documents of shares will become documentaryevidence only in the scope of proving by a shareholder to the Companythat they are entitled to share rights and will be necessary forregistration in the securities depository maintained by the NationalDepository for Securities and updating entries in securities accounts.

However, after March 1, 2026, the tangible form of documents of shareswill also lose their probative value as they will not be submitted tothe Company and will not be registered in the securities depositorymaintained by the National Depository for Securities and recorded insecurities accounts.

The documents of shares will be submitted with a written confirmationissued to the shareholder.

This call is the first one of five required by law. Subsequent callswill be published by the Issuer at an interval not longer than one monthand not shorter than two weeks each.