Ailleron S.A.

Declaration of Voting Results & Voting Rights Announcements • Sep 21, 2020

London, 20 September 2020

From: Middlefield Ventures, Inc. (Intel Capital) Middlefield Ventures, Inc. Company number 2245766, 1209 Orange St. Wilmington, Delaware, DE 19801, United States of America

1) Komisja Nadzoru Finansowego ul. Piękna 20, 00-549 Warszawa (Polan)

2) Ailleron S.A. ul. Prof. Michała Życzkowskiego 20 31-864 Kraków (Poland)

Notification pursuant to the provisions of Article 69(1)(2) of the Polish Act on Public Offering, the Conditions Governing the Introduction of Financial Instruments to Organised Trading, and Public Companies dated on July 29th 2005

In performing the obligation specified in Article 69(1)(2) of the Act on Public Offering, the Conditions Governing the Introduction of Financial Instruments to Organised Trading, and Public Companies (Journal of Laws of 2019, item 623, as amended) ("Act on Public Offering"), we hereby notify that as a result of the over-the-counter transaction (OTC) on 15 September 2020 and settled on 17 September 2020 of the sale of 418,600 ordinary shares of Ailleron S.A. with registered office in Kraków ("Company") by Middlefield Ventures, Inc with its registered office in Delaware, address: 1209 Orange St. Wilmington, Delaware, DE 19801, the United States of America, registered in the register of the State of Delaware under number 2245766 ("Middlefield Ventures"), the stake of Middlefield Ventures:

• representing currently more than 10% of the total voting rights of the Company, decreased by at least 2% of the total voting rights of the Company; and
• decreased below the threshold of 20% of the total voting rights of the Company.
• 1) The date and type of the event that leads to a change in the shareholding to which the notification relates:

On 15 September 2020, after settling on 17 September 2020, Middlefield Ventures sold as a result of the over-the-counter transaction (OTC), 418,600 ordinary shares of the Company, entitling to 418,600 votes, representing 3.39% of share capital and entitling to 2.56% of the total votes in the Company.

Together with 186,317 ordinary shares of the Company, entitling to 186,317 votes, representing 1.51% of share capital and entitling to 1.14% of the total votes in the Company, which Middlefield Ventures sold earlier on the Warsaw Stock Exchange, Middlefield Ventures sold in total 604,917 ordinary shares of the Company, entitling to 604,917 votes, representing 4.90% of share capital and entitling to 3.70% of the total votes in the Company ("Transactions").

2) The number of shares held prior to the change in the shareholding and the proportion of the Company's share capital represented by those shares, as well as the number of votes attached to those shares and the proportion of the voting rights held:

Before the execution of the Transactions, Middlefield Ventures held 2,238,927 shares of the Company, entitling to 3,786,937 votes, representing 18.12% of share capital and entitling to 23.18% of the total votes in the Company.

3) The current number of shares held and the proportion of the Company's share capital represented by those shares, as well as the number of votes attached to those shares and the proportion of the voting rights held:

After the execution of the Transactions, Middlefield Ventures holds 1,634,010 shares of the Company, entitling to 3,182,020 votes, representing 13.22% of share capital and entitling to 19.48% of the total votes in the Company.

4) Subsidiaries of the shareholder that makes the notification, which hold the Company's shares:

Middlefield Ventures does not have any subsidiaries holding shares of the Company.

5) The persons referred to in Article 87.1 (3) (c);

There are no persons mentioned in Art. 87.1 (3) (c) of Act on Public Offering.

6) The number of votes from shares, calculated pursuant to Article 69b.2, to whose acquisition they are entitled or obliged as a holder of financial instruments referred to in Article 69b.1 (1), as well as financial instruments referred to in Article 69b.1 (2) which are not exercised solely by cash settlement, the type and the name of those financial instruments, the date of their expiration, and about the date or time limit within which the acquisition of shares will or may occur.

Middlefield Ventures does not have any such financial instruments.

7) The number of votes from shares, calculated pursuant to Article 69b.3, to which the financial instruments referred to in art. 69b.1 (2) refer directly or indirectly, the type and the name of these financial instruments, and about the date of their expiration. Not applicable.

There are no persons mentioned in Art. 87.1 (3) (c) of Act on Public Offering.

6) The number of votes from shares, calculated pursuant to Article 69b.2, to whose acquisition they are entitled or obliged as a holder of financial instruments referred to in Article 69b.1 (1), as well as financial instruments referred to in Article 69b.1 (2) which are not exercised solely by cash settlement, the type and the name of those financial instruments, the date of their expiration, and about the date or time limit within which the acquisition of shares will or may occur.

Middlefield Ventures does not have any such financial instruments.

7) The number of votes from shares, calculated pursuant to Article 69b.3, to which the financial instruments referred to in art. 69b.1 (2) refer directly or indirectly, the type and the name of these financial instruments, and about the date of their expiration.

Not applicable.

8) The total number of votes as indicated pursuant to subparagraph (2), (6), and (7) and its percentage share in the total number of votes.

The total number of votes as indicated pursuant to items 3), 6), and 7) is 3,182,020 votes in the Company, entitling to 19.48% of the total votes in the Company.

For and on behalf of

Middlefield Ventures, Inc.

Signature:

Name and surname: Pablo Mesples

Position: Authorized Officer Designee

LEGAL OK
	20/09/20

Notification is received by:

1) Komisja Nadzoru Finansowego 2) Ailleron S.A.

Warsaw 10921379.1