| 26 May 2026 | Wartung der XFEL Kühltürme 2026 - 2029 (Rahmenvertrag) | Kliewe GmbH | – | 1 | 31 Dec 2026 |
| 7 May 2026 | Laser system for SQS-SP012 “Enabling attosecond science at the European XFEL” | Light Conversion UAB | €216,000 | 1 | – |
| 16 Apr 2026 | Manufacture and delivery of 15 units Connection Module | Canon Medical Components Europe B.V. | – | 1 | 17 Dec 2027 |
| 16 Apr 2026 | Manufacture and delivery of one unit Ultrafast Amplifier Laser | Light Conversion GmbH | – | 1 | 16 Nov 2026 |
| 13 Apr 2026 | Grünflächenpflege European XFEL | Zum Felde GmbH | – | 11 | 31 Mar 2027 |
| 18 Mar 2026 | European XFEL: Planung der Technischen Ausrüstung (TGA) für das Projekt "Fusion" | Pinck Ingenieure Consulting GmbH & Co. KG | – | – | – |
| 6 Mar 2026 | European XFEL: Objekt- und Tragwerksplanung für das Projekt "Fusion" | WTM Engineers GmbH | – | – | – |
| 15 Dec 2025 | Laser system for SP006-06 “Demonstrator PPL 2030+” | Light Conversion UAB | €221,000 | 1 | – |
| 5 Nov 2025 | Verhandlungsverfahren ohne Teilnahmewettbewerb | Topag Lasertechnik GmbH | €221,000 | 1 | – |
| 9 Oct 2025 | Verhandlungsverfahren ohne Teilnahmewettbewerb | Toyama Co., Ltd. | €221,000 | 1 | – |
| 3 Oct 2025 | Upgrade für das INFOR LN ERP-System auf Version 10.8 für European XFEL in Schenefeld (bei… | Sulzer GmbH | €221,000 | 2 | – |
| 8 Aug 2025 | Support- und Servicevertrag Robotersystem MARWIN | Dehne Robotik GmbH | – | 1 | – |
| 2 May 2025 | Mirror Chamber for HXS branch beamline for European XFEL | Axilon AG | €221,000 | 4 | – |
| 15 Apr 2025 | Druckhalteraustausch XFEL 2025 | Kliewe GmbH | €173,524 | 2 | 30 Sep 2025 |
| 3 Feb 2025 | Pump diodes for SASE 1 and 3 PPL booster amps | Amphos GmbH | €221,000 | 1 | – |
| 20 Jan 2025 | Framework Agreement: Group Retreats, Coaching, Mediation, Soft-skills Training, Workshops | Change 4 Success (GmbH & Co. KG) | €221,000 | 3 | 1 Feb 2027 |
| 13 Jan 2025 | Laser system for SP006 “Pump-probe laser for EuXFEL 2030+” – turn-key femtosecond laser s… | Light Conversion UAB | – | 1 | – |
| 13 Nov 2024 | Ts4i-Verteilerkasten und Booster-Übertragungsleitung | Cryoworld | €206,423 | 4 | – |
| 6 Aug 2024 | Ersatzelektroniken European XFEL IBFB | Paul Scherrer Institut | – | 1 | – |
| 7 Jun 2024 | maintenance and operation support of the Large Pixel Detector (“LPD”) | Science and Technology Facilities Council as part of United Kingdom Research and Innovation | – | 1 | – |
| 31 May 2024 | 50 AGIPD Hybrids for Front-End Modules Production for European XFEL | X-Spectrum GmbH | – | 1 | – |
| 18 Mar 2024 | Verrohrungsarbeiten XFEL Upgrade 2025 | Kliewe GmbH | – | 1 | – |
| 21 Feb 2024 | Außenanlagen für das Visitor Center (XHV) von European XFEL in Schenefeld bei Hamburg | alpina ag | – | 3 | – |