mBank S.A. Group PRE-ISSUANCE VERIFICATION LETTER BUILDINGS, WIND AND SOLAR SECTOR CRITERIA OF THE CLIMATE BONDS STANDARD Type of engagement: Assurance Engagement Period engagement was carried out: November 2025 Approved verifier: Sustainalytics Contact address for engagement: Hoogoorddreef 11, 1101 BA Amsterdam, Netherlands Pre-Issuance Engagement Leader: Tomya Sardana, tomya.sardana@moringstar.com Scope and Objectives
mBank S.A. Group ("mBank" or the "Group") is a Polish banking group offering retail, SME, corporate and investment banking services and other financial services, including commercial real estate financing, wealth management, insurance, corporate finance and advisory. The Group intends to issue the mBank Senior Non-Preferred Green Bond Series 15 (the "Green Bond") to finance and refinance residential buildings and renewable energy projects (the "Nominated Projects"). mBank has engaged Sustainalytics to review its proposed Green Bond and verify that it meets the Pre-Issuance Requirements of the Climate Bonds Standard version 4.3.1
Pre-Issuance Evaluation CriteriaPre-Issuance requirements of the Climate Bonds Standard Version 4.3:
Use of Proceeds
Evaluation and Selection of Projects, including conformance with the relevant Sector Criteria
Buildings Criteria
Residential Buildings2
Wind Sector Criteria3
Solar Sector Criteria4
Management of Proceeds
Reporting
Issuing Entity's ResponsibilitymBank is responsible for providing information and documents relating to:
The details concerning the selection process for the Nominated Projects.
The details of the Nominated Projects.
The management systems for internal processes and controls for projects, including: tracking of proceeds, managing unallocated proceeds and earmarking funds to projects.
1 Climate Bonds Initiative, "Climate Bonds Standard Version 4.3", at: https://www.climatebonds.net/files/documents/CBI_Standard_V4.3_FINAL_2025-08-20-102147_gbqn.pdf
2 Climate Bonds Initiative, "Buildings Criteria", at: https://www.climatebonds.net/files/documents/Climate-Bonds_Buildings-Criteria_Criteria-document_December-2023_2025-07-01-111616_hdmg.pdf
3 Climate Bonds Initiative, "Wind Sector Criteria", at: https://www.climatebonds.net/files/documents/supporting-documents/Climate-Bonds_Wind-Energy_Criteria-document_Apr-2023.pdf
4 Climate Bonds Initiative, Solar Sector Criteria", at: https://www.climatebonds.net/files/documents/Solar_Energy_Criteria_April-2023_2025-03-18-151137_aikr.pdf
© Sustainalytics 2025 1
The details of the issuer's commitments prior to issuance for reporting, including: investment areas, management of unallocated proceeds and frequency of periodic assurance engagements.
Sustainalytics, a leading provider of ESG and corporate governance research and ratings to investors, conducted the verification of the proposed Green Bonds to provide an independent opinion on their conformance with the Pre-Issuance Requirements of the Climate Bonds Standard.
Sustainalytics has relied on the information and the facts presented by mBank with respect to the Nominated Projects. Sustainalytics is not responsible nor shall it be held liable for any inaccuracies in the opinions, findings or conclusions herein due to incorrect or incomplete data provided by mBank.
Sustainalytics makes all efforts to ensure the highest quality and rigor during its assessment process and enlisted its Sustainability Bonds Review Committee to provide oversight over the assessment of the bond.
Verifier's ResponsibilitySustainalytics conducted the verification in accordance with the Climate Bonds Standard Version
4.3 and with International Standard on Assurance Engagements 3000 (ISAE 3000).
The work undertaken as part of this engagement included conversations with relevant mBank representatives and the review of relevant documentation to assess conformance of the proposed Green Bond with the Climate Bonds Certification Pre-Issuance Requirements.
ConclusionmBank intends to issue the Green Bond to finance and refinance new or existing low carbon buildings and renewable energy projects, including capital expenditures and, where applicable, operating and other related costs.
Based on the limited assurance procedures conducted, nothing has come to Sustainalytics' attention that causes us to believe that, in all material aspects, the proposed Green Bonds are not in conformance with the Climate Bonds Standard's Pre-Issuance Requirements.
Schedule 1: Nominated ProjectsDetails of the Nominated Projects which constitute the mBank Senior Non- Preferred Senior Green Bond Series 15 portfolio as of September 2025 are provided below:
mBank's green asset portfolio value is PLN 8.5 billion (EUR 2 billion) of which 12,396 loans fall under the Buildings, Wind and Solar Sector Criteria of the Climate Bonds Standard with a total allocation of approximately PLN 2,134.60 million (EUR 500 million).
Table 1: Details of the Nominated Projects as of September 2025Sector Criteria | Project Type | Technical Condition | Number of loans | Total Amount to be Allocated (PLN million) | Total Amount to be Allocated (EUR million) |
Buildings 56 | Multi-family housing | Technical Condition 2021 | 6,793 | 1,707.68 | 400.00 |
Single-family housing | Technical Condition 2021 | 5,520 | |||
Wind | Wind Farm | N/A | 13 | 426.92 | 100.00 |
Solar7 | Solar PV | N/A | 70 | ||
Total | 12,396 | 2,134.60 | 500.00 | ||
5 mBank has confirmed that the portfolio of buildings meets the CBI's residential market proxy for Poland.
6 mBank has confirmed that the construction of buildings took place between 2021 and 2023, and no new buildings were constructed after 2023.
7 mBank has confirmed that at least 85% of the electricity generated will come from solar energy.
Schedule 2: Conformance to the Pre-Issuance Requirements of the Climate Bonds Standard8 ,9Procedure Performed | Factual Findings | Error or Exceptions Identified |
A.2.1.1. mBank has developed a list of proposed Nominated Projects which comply with the Buildings, Wind Sector and Solar Sector Criteria of the Climate Bonds Standard. mBank intends to keep this list updated. The proposed Nominated Projects include: | ||
| ||
A.2.1.2. mBank confirms that all the Nominated Projects will meet the documented objectives of the debt instrument as set out in the mBank's Framework10. | ||
A.2.1. Use of Proceeds | A.2.1.3. mBank confirms that it will allocate 100% of the net proceeds of the debt instrument to projects and assets that meet the Buildings, Wind and Solar Sector Criteria of the Climate Bonds Standard. | None |
A.2.1.4. N/A | ||
A.2.1.5. N/A | ||
A.2.1.6. mBank confirms that the net proceeds of the debt instruments will not be greater than the total investment exposure to the proposed Nominated Projects or the relevant proportion of the total market value of the proposed Nominated Projects owned or funded by mBank. | ||
A.2.1.7. mBank's management confirms that the Nominated Projects will not be nominated to other certified debt Instruments unless mBank demonstrates that distinct portions of the Nominated Projects are being funded by different certified debt instruments or, the present certified debt instrument is being refinanced via another certified debt instrument. |
8 Climate Bonds Initiative, "Climate Bonds Standard Version 4.3", at: https://www.climatebonds.net/files/documents/CBI_Standard_V4.3_FINAL_2025-08-20-102147_gbqn.pdf
9 For ease of reference, the numbering in this section follows the numbering of the Climate Bonds Standard Version 4.3.
10 mBank, "mBank S.A. Group Green Bond Framework", (2024), at: https://www.mbank.pl/pdf/msp-korporacje/relacje-inwestorskie/ratingi-instrumenty-dluzne/ratingi/mbank-green-bond-framework.pdf
A.2.2. Process for Evaluation and Selection of Projects and Assets |
A.2.2.1 above includes the following:
| None |
A.2.3. Management of Proceeds |
| None |
