PORR AG: Publication pursuant to Section 2 of the Austrian Publication Regulation 2018 (Veröffentlichungsverordnung 2018)

Vienna (pta044/28.04.2026/16:00 UTC+2)

Revocation of the authorisation of the Management Board to acquire treasury shares (own shares) as well as to cancel treasury shares (own shares) together with the new authorisation of the Management Board to acquire treasury shares (own shares) and to cancel treasury shares (own shares)

The 146nd ordinary shareholders' meeting (Annual General Meeting) of PORR AG, 1100 Wien, Absberggasse 47, held on 28 April 2026, passed the following resolutions to item 10 of the agenda:

• The authorisation of the Management Board resolved in the Annual General Meeting on 30 April 2024 to acquire treasury shares (own shares)pursuant to Section 65 para 1 No 4 and No 8 as well as para 1a and para 1b AktG as well as to cancel treasury shares (own shares) is revoked and replaced by the following new authorisation of the Management Board:
  
• The General Meeting authorises the Management Board for a period of 30 months from the date of the resolution pursuant to Section 65 para 1 No 4 and No 8 as well as para 1a and para 1b AktG, to acquire treasury shares (own shares) up to the statutory limit of 10 % of the share capital, also repeatedly, considering treasury shares (own shares) previously acquired. The consideration per share must not be lower than EUR 1.00 and must not exceed the average of the unweighted closing price on the ten stock exchange trading days preceding an acquisition by more than 10 %. Any acquisition may be carried out via the stock exchange or a public offer or other beneficial means permitted by law, including over the counter or by means of a negotiated purchase from individual shareholders intending to sell their shares and with exclusion of the shareholders' quota-based right to tender (Andienungsrecht). Furthermore, the Management Board is authorised to determine the respective repurchase conditions of any acquisition, whereby the Management Board shall publish its relevant resolution and the respective repurchase programme based thereon, including its duration, in accordance with the statutory provisions (in each case). This authorisation may be performed in full or in part in one or several tranches and for one or several purposes by the Company, a subsidiary pursuant to Section 189a UGB or by third parties for the account of the Company. Trading in treasury shares (own shares) is excluded as the purpose of the acquisition. Finally, the Management Board is authorised, without further approval by the General Meeting, to cancel treasury shares (own shares) with the approval of the Supervisory Board. The Supervisory Board is authorised to resolve on amendments to the Articles of Association resulting from the cancellation of treasury shares (own shares).

(Publication pursuant to Section 65 para 1a AktG and Section 119 para 9 BörseG 2018 in conjunction with Section 2 of the Publication Regulation 2018)

For further questions please contact:

Lisa Galuska
Head of Investor Relations
PORR AG
Tel.: +43 (0)50 626-1765
E-Mail: ir@porr-group.com

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Emitter:	PORR AG Absberggasse 47 1100 Wien Austria
Contact Person:	Mag. Ilona Radoczky
Phone:	+43 50 626-1546
E-Mail:	investor.relations@porr.at
Website:	www.porr-group.com
ISIN(s):	AT0000609607 (Share) AT0000A39724 (Bond) XS2408013709 (Bond)
Stock Exchange(s):	Vienna Stock Exchange (Official Trade); Free Market in Frankfurt (Basic Board)