Annual

Sustainability

Report 2023

1

Wolftank-Adisa Holding AG

Annual Sustainability Report 2023

About this report

This annual report provides financial and non-financial information about the Wolf ank Group's performance in 2023. The reporting period is 1 January to 31 December 2023. The financial part of this report has been prepared in accordance with the Austrian UGB reporting standard for accounting and consolidation. Both the consolidated and the relevant single entity report have been audited by third party auditors.

The non-financial part (sustainability report) presents the main topics of the Wolfank Group's sustainability performance, including climate and environmental impacts as well as the social agenda. This comprehensive overview of our commitment, progress, and impact has been prepared converging from the Global Reporting Initiative (GRI) into the European Sustainability Reporting Standards (ESRS). ESRS were adopted by the European Commission in July 2023. Since then, the Wolfank Group has been preparing to switch its non-financial reporting from the previous GRI standard, according to which it has reported annually since 2020, to the new European Standards.

In this report, we aim to transparently communicate our eforts towards sustainable practices, environmental stewardship, social responsibility, and economic resilience. By adhering to the European Sustainability Reporting Standards in due time, we ensure consistency, comparability, and reliability in disclosing our sustainability performance. In terms of data collection, every subsidiary of the Wolfank Group is collecting data at a local level: designated and experienced employees collect the information and provide it to the Group Sustainability team in the format recommended by the ESRS. The Sustainability Management Team on group level is responsible for the comprehensive, group-wide data collection, analysis and reporting, with ongoing oversight and collaboration with the Group Executive Board.

We recognize the importance of sustainability as a driver of long-term value creation, and we are committed to continually improving our performance, fostering stakeholder trust, and contributing to a more sustainable future for all.

insight.wolftankgroup.com

23.05.2024

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Wolftank-Adisa Holding AG

Annual Sustainability Report 2023

The reporting team would like to sincerely thank our colleagues and stakeholders for their time and ef ort in preparing this report.

The report is published in English on the Wolfank Group website in May 2024, and, except for the Annual General

Meeting on 7 June 2024, we refrain from printing paper copies of this report for environmental reasons.

insight.wolftankgroup.com

23.05.2024

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Index

02 | To our stakeholders

Letter of the CEO

6

Letter of the Supervisory Board

8

Investor Relations

10

Share

10

Capital measures

10

Shareholder structure

11

Capital markets communication

11

Financial calendar

12

03 | Wolftank Group

Wolftank Group at a glance

14

Strategy and values

16

Corporate Governance

21

Key products & services

26

Hydrogen and Renewable Energies

26

Industrial Coatings and Maintenance

32

Environmental Services

36

Quality management

42

Research & Development

44

04 | Financial highlights 2023

Market environment

47

Business development

48

Company highlights 2023

48

Financial development 2023

55

Outlook

60

Risks

63

05 | Non-financial highlights 2023

Sustainability at Wolftank Group

67

Sustainability plan

67

Double materiality assessment

71

Transitioning from GRI to CSRD/ESRS

48

Consideration and involvement of stakeholders

51

The double materiality analysis

55

Sustainability areas and developments 2023

78

Highlights & key developments in 2023

78

EU Taxonomy

81

Environment

83

Social

102

Governance

111

06 | Consolidated financial statemens

Consolidated Balance Sheet

118

Consolidated Profit and Loss Account

120

Consolidated Cash Flow Statement

122

Consolidated Statement of Changes in

123

Shareholders' Equity

Consolidated Statement of Changes in

124

Fixed Assets

Group Annex

126

ESRS Content Index

141

Impressum

143

Wolftank-Adisa Holding AG

Annual Sustainability Report 2023

02

TO OUR STAKEHOLDERS

insight.wolftankgroup.com

23.05.2024

5

Wolftank-Adisa Holding AG

Annual Sustainability Report 2023

Letter of the CEO

The past year has been a period of significant progress and solid achievements for our Group. Our strategic vision and execution have not only expanded our reach, but also significantly strengthened our position in key sectors and markets focused on sustainability and innovation. This annual report outlines how our strategy and focus on emerging opportunities have driven our performance and positioned us for future growth, with substantial and continuous benefits from the long-term subsidized investments in infrastructure for the energy transition towards an emission-free economy.

Strategic expansion

2023 was a landmark year for Wol ank Group, driven by our focused buy-and-build strategy and our clear strategic vision. We have strengthened our position in our core businesses of Industrial Coatings and Maintenance as well as Environmental Services. These core businesses are generating solid and consistent returns, while we are building on our expertise and capitalize on the opportunities in the dynamically expanding hydrogen and renewable energy sector.

One of our key strategic highlights was the acquisition of a majority stake in Petroltecnica. With its 70-year history, Petroltecnica brings a wealth of experience and a market leading position that enhances our service oering and reinforces our environmental mission. This move not only expands our environmental remediation capabilities, but also strengthens our P&L account and market presence, positioning us well for further growth. In addition, the operational and strategic performance of Mares, our joint venture with Kuwait Petroleum, exceeded our expectations in its first full solar year of consolidation, with earnings and revenues above targets.

Sustainable foundations and future-oriented initiatives

Our core businesses, particularly environmental remediation and industrial coatings, remain the foundation of our operations. The stability and maturity of these segments provide a competitive advantage and increase our resilience in more volatile markets. This underlying strength supports our ambitious eorts in hydrogen and renewable energy, which are positioned for strong growth in the years ahead.

The supportive environment created by the U.S. Inflation Reduction Act motivated us to make a strategic entry into the promising Californian market. With the establishment of Wol)ank USA Inc. we will capitalize on the opportunities presented by the U.S. commitment to climate protection, including significant investments in climate initiatives. The groundwork laid this year is critical to our strategic commitment to bring Wol)ankʼs mobile refueling solutions to the U.S. market.

In addition, our strategic refocusing in Spain on the hydrogen business through significant restructuring and our entry into the intralogistics market in Germany are examples of our dynamic strategy and our ability to move and adapt to seize new opportunities.

insight.wolftankgroup.com

23.05.2024

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Wolftank-Adisa Holding AG

Annual Sustainability Report 2023

Set for growth

Looking ahead, Wol ank Group is exceptionally well positioned for a thriving future. Our comprehensive range of engineering and environmental services covers the entire value chain in the remediation of contaminated sites and facilities. Our commitment to sustainability is evident in our advanced fueling technologies and our role in developing the infrastructure necessary for zero-emission mobility.

In conclusion, our strategic initiatives in 2023 have strengthened Wol ank Groupʼs position as a leader in the green economy, leveraging technological innovation and market expansion to drive sustainable growth. Our entry into new markets, coupled with our strategic acquisition of Petroltecnica and new partnerships - among others, with the multinationals Matrix Service in the US and Enermech in Australia - has expanded our capabilities and improved our market position. Going forward, we will continue to focus on driving innovation, expanding our geographic footprint and increasing shareholder value, while making a positive contribution to environmental sustainability.

With these accomplishments and our strategic direction, I am confident in our ability to meet the challenges and seize the opportunities that lie ahead as we continue our journey toward a sustainable and profitable future. My sincere thanks go to our innovative and motivated team, as well as to our customers, our stakeholders and our partners for the trust they have placed in us. Together, we are building a better tomorrow. Simply speaking, we lead the energy transition towards an emission-free sustainable economy.

Dr. Peter M. Werth

insight.wolftankgroup.com

23.05.2024

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Wolftank-Adisa Holding AG

Annual Sustainability Report 2023

Letter from the Supervisory Board

As we look back on the past year, our guiding principle remains the same: to invest in environmental protection while achieving solid financial returns. This dual objective is challenging but critical, and Wolfank Group has distinguished itself as a leader in this field, truly embodying an investment with impact.

In 2023, Wolfank Group has successfully navigated the complexities of the energy transition, turning it into a strong and long-term business case. The management team has capitalized on emerging opportunities within this transition, not only mitigating potential losses, but also significantly enhancing the ability to fulfill larger orders, particularly in the growing hydrogen infrastructure market.

Sustainable investment and environmental protection

Wolfank Group's commitment to innovate is demonstrated by the R&D eforts that have continued throughout the year. These initiatives ensure that Wolfank Group remains at the forefront, ready with efective solutions as the global shif from fossil fuels to renewable, carbon-neutral and ultimately zero-emission fuels accelerates.

Strengthening ESG commitment and global recognition

The Wolfank Group's business is fundamentally based on the values of ethical and social responsibility. This year also marked a significant advancement in our environmental, social and governance (ESG) commitments. This annual report is the fourth to integrate financial and non- financial reporting, a proactive step towards full compliance with the upcoming CSRD mandates in 2025. As a demonstration of our commitment to global sustainability standards, we have been accepted into the UN Global Compact by Chairman Antonío Gutierrez, a recognition that underscores our active contribution to the UN's sustainability and climate goals.

insight.wolftankgroup.com

23.05.2024

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Wolftank-Adisa Holding AG

Annual Sustainability Report 2023

Empowerment and Governance

The Supervisory Board maintained a robust and continuous dialog with the management team throughout the year, ensuring thorough discussion and evaluation of key decisions. Our corporate governance framework ensures transparency and fairness for all stakeholders and governs our interactions and responsibilities. Working with such a dedicated management team has been both productive and a pleasure for us.

As we look into the future, Wolfank Group remains committed to advancing the principles of ecology, innovation and collaboration. We are poised to support the path of sustainable growth, leveraging strategic initiatives and governance frameworks to benefit our stakeholders and the broader community in our relentless pursuit of a greener and more sustainable future.

RA Markus

Dr. Andreas von

RA Raphaela

Dr. Herbert

Dipl.-Geol.

Wenner

Aufschnaiter

Lindlbauer

Hofer

Michael Funke

(Chairman)

(Vice-

Chairman)

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23.05.2024

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Wolftank-Adisa Holding AG

Annual Sustainability Report 2023

Investor relations

Share

The share of Wolfank-Adisa Holding AG is listed with the ticker symbol WOLF in the direct market plus segment of the Vienna Stock Exchange (ISIN: AT0000A25NJ6) and with WAH in the m:access segment of the Munich Stock Exchange (WKN: A2PBHR) and is traded on Xetra and various other share trading platforms. On the stock exchange with the highest trading volume, Xetra Frankfurt, the share started the year at EUR 13.3 and closed in December at EUR 10.5. During the year, the share reached a high of EUR 14.9 (10 February) and a low of EUR 9.6 (21 December). The decreasing share price towards the end of year was mainly caused by external events such as the ceased activity of various small-cap funds in Germany and France, as well as the hydrogen peer group downturn of average >80%.

Capital measures

To support its strategic expansion and reinforce its commitment to developing innovative energy and environmental solutions, Wolfank Group implemented key capital measures in 2023. These measures have been important in strengthening the Group's financial base and enabling further growth in zero-emission mobility and infrastructure solutions. The main purpose of the capital measures was to ensure a healthy financing of the very strong project pipeline, especially in the Hydrogen & Renewable Energies Business Unit, which has the largest order backlog in its history at the beginning of 2024.

In January 2023, the Group completed a capital increase, raising EUR 5.9 million to support its business expansion. The move increased the number of shares to 4,801,504 and strengthened the Group's capabilities in providing turnkey modular hydrogen fueling systems, among other state-of-the-art technologies.

In October, Wolfank Group carried out another capital increase by issuing 224,807 new bearer shares, utilizing the authorized capital from the Annual General Meeting of 2 June 2023. This increased the company's share capital to EUR 5,026,311. This strategic initiative aimed at strengthening the equity base, supporting current and planned projects and taking into account the sustainable development of the Group. In particular, C.&S. Consulenze e Servizi Srl, the former majority owner of Petroltecnica Spa, reinvested half of the proceeds of its sale in this capital increase, fully supporting the Group's vision for growth in the environmental sector.

These capital measures across the Group highlight Wolfank's strategic financial management and investment in the future of energy and environmental solutions. By strengthening its financial base and investing in innovative developments and projects, Wolfank Group is well positioned to lead the transition to a sustainable and zero- emission future.

insight.wolftankgroup.com

23.05.2024

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Wolftank Adisa Holding AG published this content on 23 May 2024 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 23 May 2024 14:53:05 UTC.