Bilfinger SE: Release according to Article 40, Section 1 of the WpHG (the
German Securities Trading Act) with the objective of Europe-wide distribution

EQS Voting Rights Announcement: Bilfinger SE
Bilfinger SE: Release according to Article 40, Section 1 of the WpHG (the
German Securities Trading Act) with the objective of Europe-wide
distribution

25.11.2025 / 17:57 CET/CEST
Dissemination of a Voting Rights Announcement transmitted by EQS News - a
service of EQS Group.
The issuer is solely responsible for the content of this announcement.

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Notification of Major Holdings

1. Details of issuer

     Name:                             Bilfinger SE
     Street:                           Oskar-Meixner-Straße 1
     Postal code:                      68163
     City:                             Mannheim
                                       Germany
     Legal Entity Identifier (LEI):    529900H0HULEN2BZ4604

2. Reason for notification

     X    Acquisition/disposal of shares with voting rights
          Acquisition/disposal of instruments
          Change of breakdown of voting rights
          Other reason:

3. Details of person subject to the notification obligation

   Legal entity: Wellington Management Group LLP
   City of registered office, country: Boston, United States of America
   (USA)

4. Names of shareholder(s)
holding directly 3% or more voting rights, if different from 3.



5. Date on which threshold was crossed or reached:

18 Nov 2025

6. Total positions

               % of voting  % of voting rights   Total of  Total number of
           rights attached             through  both in %    voting rights
                 to shares  instruments (total    (7.a. +      pursuant to
           (total of 7.a.)   of 7.b.1 + 7.b.2)      7.b.)     Sec. 41 WpHG
  New       3.002626788886              0.01 %     3.01 %         37606372
                         %
  Previo-            n/a %               n/a %      n/a %                /
  us
  notifi-
  cation

7. Details on total positions
a. Voting rights attached to shares (Sec. 33, 34 WpHG)

    ISIN            Absolute                  In %
                  Direct (Sec.  Indirect    Direct (Sec.  Indirect (Sec.
                      33 WpHG)  (Sec. 34        33 WpHG)        34 WpHG)
                                   WpHG)
    DE0005909006             0   1129179          0.00 %          3.00 %
    Total           1129179              3.002626788886
                                               %

b.1. Instruments according to Sec. 38 (1) no. 1 WpHG

    Type of     Expiration or  Exercise or    Voting     Voting
    instrument  maturity date  conversion     rights  rights in
                               period       absolute          %
                                                   0     0.00 %
                               Total               0     0.00 %

b.2. Instruments according to Sec. 38 (1) no. 2 WpHG

    Type of    Expiration   Exercise or  Cash or       Voting  Voting
    instrume-  or maturity  conversion   physical      rights  rights
    nt         date         period       settlement  absolute    in %
    Equity     05/05/2028   05/05/2028   Cash            4319  0.01 %
    Swap                                 settlement
                                         Total           4319  0.01 %

8. Information in relation to the person subject to the notification
obligation

        Person subject to the notification obligation is not controlled nor
        does it control any other undertaking(s) that directly or
        indirectly hold(s) an interest in the (underlying) issuer (1.).
   X    Full chain of controlled undertakings starting with the ultimate
        controlling natural person or legal entity:

  Name                      % of voting   % of voting rights     Total of
                          rights (if at  through instruments  both (if at
                            least 3% or   (if at least 5% or  least 5% or
                                  more)                more)        more)
  Wellington Management               %                    %            %
  Group LLP
  Wellington Group                    %                    %            %
  Holdings LLP
  Wellington Investment               %                    %            %
  Advisors Holdings LLP
  Wellington Management               %                    %            %
  Global Holdings, Ltd.
  Wellington Management               %                    %            %
  International Ltd.
  -                                   %                    %            %
  Wellington Management               %                    %            %
  Group LLP
  Wellington Group                    %                    %            %
  Holdings LLP
  Wellington Management               %                    %            %
  Funds Holdings LLP
  Wellington Alternative              %                    %            %
  Investments LLC
  Wellington Global                   %                    %            %
  Multi-Strategy Master
  Fund (Cayman) L.P.
  -                                   %                    %            %
  Wellington Management               %                    %            %
  Group LLP
  Wellington Group                    %                    %            %
  Holdings LLP
  Wellington Management               %                    %            %
  Funds Holdings LLP
  Wellington Alternative              %                    %            %
  Investments LLC
  Wellington Global                   %                    %            %
  Multi-Strategy Fund
  (Cayman) L.P.
  -                                   %                    %            %
  Wellington Management               %                    %            %
  Group LLP
  Wellington Group                    %                    %            %
  Holdings LLP
  Wellington Management               %                    %            %
  Funds Holdings LLP
  Wellington Alternative              %                    %            %
  Investments LLC
  Wellington Global                   %                    %            %
  Multi-Strategy Fund,
  L.P.
  -                                   %                    %            %
  Wellington Management               %                    %            %
  Group LLP
  Wellington Group                    %                    %            %
  Holdings LLP
  Wellington Investment               %                    %            %
  Advisors Holdings LLP
  Wellington Management               %                    %            %
  Company LLP
  Wellington Global                   %                    %            %
  Multi-Strategy Fund
  -                                   %                    %            %
  Wellington Management               %                    %            %
  Group LLP
  Wellington Group                    %                    %            %
  Holdings LLP
  Wellington Management               %                    %            %
  Funds Holdings LLP
  Wellington Alternative              %                    %            %
  Investments LLC
  Wellington Strategic                %                    %            %
  European Equity
  Long/Short Master Fund
  (Cayman) L.P.
  -                                   %                    %            %
  Wellington Management               %                    %            %
  Group LLP
  Wellington Group                    %                    %            %
  Holdings LLP
  Wellington Management               %                    %            %
  Funds Holdings LLP
  Wellington Alternative              %                    %            %
  Investments LLC
  Wellington Strategic                %                    %            %
  European Equity
  Long/Short Fund
  (Cayman) L.P.
  -                                   %                    %            %
  Wellington Management               %                    %            %
  Group LLP
  Wellington Group                    %                    %            %
  Holdings LLP
  Wellington Management               %                    %            %
  Funds Holdings LLP
  Wellington Alternative              %                    %            %
  Investments LLC
  Wellington Strategic                %                    %            %
  European Equity
  Long/Short Fund, L.P.

9. In case of proxy voting according to Sec. 34 para. 3 WpHG
(only in case of attribution of voting rights in accordance with Sec. 34
para. 1 sent. 1 No. 6 WpHG)

Date of general meeting:
Holding total positions after general meeting (6.) after annual general
meeting:

     Proportion of voting    Proportion of    Total of
                   rights      instruments        both
                        %                %           %

10. Other explanatory remarks:



Date

24 Nov 2025


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25.11.2025 CET/CEST The EQS Distribution Services include Regulatory
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   Language:    English
   Company:     Bilfinger SE
                Oskar-Meixner-Straße 1
                68163 Mannheim
                Germany
   Internet:    http://www.bilfinger.com

End of News EQS News Service
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2235724 25.11.2025 CET/CEST