Allegro.eu S.A.

Transaction in Own Shares • Dec 16, 2023

Current report No. 28/2023

Date: 15 December 2023

Title: Allegro announces the completion of its share buyback programme

Legal basis: Article 17 of Market Abuse Regulation

With reference to the current reports No. 26/2023 and No. 27/2023, theBoard of Directors of Allegro.eu (the "Company") hereby announces thecompletion of its share buyback programme announced on 27 November 2023(the "Programme").

In aggregate, 2,172,523 shares were bought under this Programme,representing 0.21% of the share capital of the Company.

- Period of repurchases: 11-15 December 2023 (based on trade date)

- Number of shares acquired: 2,172,523

- Venue of trading - WSE

- Pecuniary amount of shares acquired: PLN 67,570,083.15

As disclosed when the Programme was launched, its purpose was to satisfythe awards granted under Allegro's employee incentive plan.

Allegro.eu is a Luxembourg public limited company (soci_#233;t_#233; anonyme),registered office: 1, rue Hildegard von Bingen, L - 1282 Luxembourg,Grand Duchy of Luxembourg, R.C.S. Luxembourg: B214830.