GRI Index

Deutsche Telekom’s 2025 CR report is aligned with the guidelines of the Global Reporting Initiative (GRI) and was prepared in accordance with the “with reference” option of the GRI Standards. In doing so, we consistently continue our commitment to transparency and traceability. The information reported covers the period from January 1 to December 31, 2025.

In the GRI content index, we refer to disclosures relating to general and topic‑specific standard disclosures within this CR report as well as to other relevant publications of Deutsche Telekom. Where necessary, we provide additional explanations of these disclosures directly in the index.

General Disclosures

GRI 2: General Disclosures

The organization and its reporting practices

GRI Standard	Disclosure	Reference	Omission/Additional Information
2‑1	Organization profile	ESRS 2 SBM-1 – Strategy, business model, and value chain Group profile Imprint Worldwide
2‑2	Entities considered in the organization's sustainability reporting	About this report Worldwide
2‑3	Reporting period, reporting frequency and contact point	About this report
2‑4	Correction or restatement of information	About this report	In the reporting year, there was no reason to present new information from previous reporting periods.

Activities and workers

GRI Standard

Disclosure

Reference

Omission/Additional Information

2‑6

Activities, value chain and other business relationships

ESRS 2 SBM-1 – Strategy, business model, and value chain

2‑7

Employees

ESRS S1‑6 – Characteristics of the undertaking’s employees

Corporate culture and inclusion: Valuing diversity and respecting needs

Governance

GRI Standard	Disclosure	Reference	Omission/Additional Information
2‑9	Governance structure and composition	ESRS 2 SBM-1 – Strategy, business model, and value chain ESRS 2 GOV-1 – The role of the administrative, management, and supervisory bodies Corporate Governance Declaration pursuant to Sections 289f, 315d of the German Commercial Code (HGB)
2‑10	Nomination and selection of the highest governance body	Corporate Governance Declaration pursuant to Sections 289f, 315d of the German Commercial Code (HGB) ESRS 2 GOV-1 – The role of the administrative, management, and supervisory bodies
2‑11	Chair of the highest supervisory body	Corporate Governance Declaration pursuant to Sections 289f, 315d of the German Commercial Code (HGB)
2‑12	Role of the highest governance body in overseeing the management of impacts	ESRS 2 GOV-1 – The role of the administrative, management, and supervisory bodies ESRS 2 GOV-2 – Information provided to and sustainability matters addressed by the undertaking’s administrative, management, and supervisory bodies ESRS 2 IRO-1 – Description of the process to identify and assess material impacts, risks, and opportunities
2‑13	Delegation of responsibility for managing impacts	ESRS 2 SBM-1 – Strategy, business model, and value chain ESRS 2 GOV-1 – The role of the administrative, management, and supervisory bodies
2‑14	Role of the highest governance body in sustainability reporting	ESRS 2 GOV-5 – Risk management and internal controls over sustainability reporting ESRS 2 IRO-1 – Description of the process to identify and assess material impacts, risks, and opportunities
2‑15	Conflicts of interest	ESRS 2 GOV-1 – The role of the administrative, management, and supervisory bodies Corporate Governance Declaration pursuant to Sections 289f, 315d of the German Commercial Code (HGB)
2‑16	Communication of critical concerns	ESRS G1‑3 – Prevention and detection of corruption and bribery Corporate Governance Declaration pursuant to Sections 289f, 315d of the German Commercial Code (HGB)
2‑17	Accumulated knowledge of the highest control body	CR Strategy: setting the framework, measuring progress ESRS 2 GOV-1 – The role of the administrative, management, and supervisory bodies
2‑18	Evaluation of the performance of the highest governance body	ESRS 2 GOV-1 – The role of the administrative, management, and supervisory bodies Corporate Governance Declaration pursuant to Sections 289f, 315d of the German Commercial Code (HGB)
2‑19	Remuneration policies	Remuneration Report and Systems 2025 ESRS 2 GOV-3 – Integration of sustainability-related performance in incentive schemes
2‑20	Process to determine remuneration	Remuneration Report and Systems 2025
2‑21	Annual total compensation ratio	ESRS S1‑16 – Remuneration metrics (pay gap and total remuneration)

Strategy, policies and practices

GRI Standard	Disclosure	Reference	Omission/Additional Information
2‑22	Statement on sustainable development strategy	ESRS 2 SBM-1 - Strategy, business model, and value chain Foreword CR Strategy: setting the framework, measuring progress
2‑23	Policy commitments	ESRS G1‑1 – Business conduct policies and corporate culture ESRS 2 GOV-5 – Risk management and internal controls over sustainability reporting ESRS S1‑1 – Policies related to own workforce Deutsche Telekom Code of Human Rights
2‑24	Embedding policy commitments	Deutsche Telekom Code of Human Rights
2‑25	Processes to remediate negative impacts	ESRS G1‑3 – Prevention and detection of corruption and bribery ESRS S1‑3 – Processes to remediate negative impacts and channels for own workforce to raise concerns ESRS S2‑3 – Processes to remediate negative impacts and channels for value chain workers to raise concerns
2‑26	Mechanisms for seeking advice and raising concerns	ESRS G1‑3 – Prevention and detection of corruption and bribery
2‑27	Compliance with laws and regulations	Compliance facts and figures ESRS G1‑3 – Prevention and detection of corruption and bribery Litigation and anti-trust proceedings	Information on relevant legal proceedings and outcomes can be found in the “Risk and opportunity management” chapter in the combined management report.
2‑28	Membership associations	Political advocacy ESRS G1‑1 – Business conduct policies and corporate culture Code of Conduct

Stakeholder engagement

GRI Standard		Disclosure		Reference		Omission/Additional Information
2‑29		Approach to stakeholder engagement		ESRS 2 SBM-2 – Interests and views of stakeholders Overview memberships and cooperations
2‑30		Collective bargaining agreements		ESRS S1‑8 – Collective bargaining coverage and social dialogue		As of 31 December 2025, 41.2 % of our employees were covered by collective bargaining agreements. In Germany, the coverage rate amounted to 75.4 %. The collective agreements concluded with trade unions do not apply to our employees outside the scope of collective bargaining agreements. The terms and conditions of employment for these non‑collectively bargained employees are set out in the Group Works Agreement for non‑collectively bargained employees (KBV AT). In addition, the collective agreements do not apply to a small number of employees for whom collective bargaining agreements from other sectors apply.

GRI Standard

Disclosure

Reference

Omission/Additional Information

2‑29

Approach to stakeholder engagement

ESRS 2 SBM-2 – Interests and views of stakeholders

Overview memberships and cooperations

2‑30

Collective bargaining agreements

ESRS S1‑8 – Collective bargaining coverage and social dialogue

As of 31 December 2025, 41.2 % of our employees were covered by collective bargaining agreements. In Germany, the coverage rate amounted to 75.4 %.

The collective agreements concluded with trade unions do not apply to our employees outside the scope of collective bargaining agreements. The terms and conditions of employment for these non‑collectively bargained employees are set out in the Group Works Agreement for non‑collectively bargained employees (KBV AT).

In addition, the collective agreements do not apply to a small number of employees for whom collective bargaining agreements from other sectors apply.

GRI 3: Material topics

GRI Standard	Disclosure	Reference	Omission/Additional Information
3‑1	Process to determine material topics	ESRS 2 IRO-1 – Description of the process to identify and assess material impacts, risks, and opportunities
3‑2	List of material topics	ESRS 2 IRO-2 – Disclosure requirements in ESRS covered by the undertaking’s sustainability statement

Economic standards

GRI 205: Anti-corruption

GRI Standard	Disclosure	Reference	Omission/Additional Information
3‑3	Management of material topics	ESRS G1 – Business conduct
205‑1	Operations assessed for risks related to corruption	Compliance facts and figures	One of the foundations of Deutsche Telekom’s compliance management system is a Compliance Risk Assessment (CRA), which is used to identify and assess compliance risks and to initiate appropriate preventive measures. In 2025, the CRA was conducted in 51 Telekom subsidiaries in Germany and abroad with a specific focus on the requirements of the German Act on Corporate Due Diligence Obligations in Supply Chains (Lieferkettensorgfaltspflichtengesetz, LkSG). The regular, broader standard CRA was last carried out in 2024 for Deutsche Telekom AG and a further 101 subsidiaries in Germany and abroad. The next regular risk assessment is scheduled for 2026. As a US‑listed company, T‑Mobile US conducts a risk assessment based on its own methodology and reports on this regularly to the relevant governing bodies, on which Deutsche Telekom AG is also represented.
205‑2	Communication and training about anti-corruption policies and procedures	ESRS G1‑3 – Prevention and detection of corruption and bribery Compliance facts and figures
205‑3	Confirmed incidents of corruption and actions taken	Compliance facts and figures ESRS G1-4 – Incidents of corruption and bribery

Environmental standards

GRI 301: Materials

GRI Standard	Disclosure	Reference	Omission/Additional Information
3‑3	Management of material topics	Circular economy: a systematic approach along the value chain ESRS E5‑1 – Policies related to resource use and circular economy
301‑1	Materials used by weight or volume	ESRS E5‑4 Resource inflows
301‑2	Recycled input materials used	ESRS E5‑4 Resource inflows
301‑3	Reclaimed products and their packaging materials	Circular economy: a systematic approach along the value chain ESRS E5‑4 Resource inflows

GRI 302: Energy

GRI Standard	Disclosure	Reference	Omission/Additional Information
3‑3	Management of material topics	ESRS E1‑3 – Actions and resources in relation to climate change policies ESRS E1‑4 – Targets related to climate change mitigation and adaptation Energy: optimizing consumption and increasing efficiency
302‑1	Energy consumption within the organization	ESRS E1‑5 – Energy consumption and mix Energy: optimizing consumption and increasing efficiency
302‑2	Energy consumption outside the organization	ESRS E1‑6 – Gross Scopes 1, 2, 3 and total GHG emissions
302‑3	Energy Intensity	ESRS E1‑5 – Energy consumption and mix KPI “Renewable Energies” Energy: optimizing consumption and increasing efficiency
302‑4	Reduction of energy consumption	KPI “Renewable Energies” ESRS E1‑5 – Energy consumption and mix	Information not available/incomplete In our CR report, we provide information on measures to improve energy efficiency as well as on the development of key energy indicators, in particular energy intensity. A separate quantitative breakdown of the reduction in energy consumption attributable to individual measures is currently not reported, as the corresponding savings are not captured in an isolated and methodologically unambiguous manner. Information on changes in energy consumption compared to the previous year can be found in our sustainability statement.
302‑5	Reduction of energy requirements for products and services	Energy: optimizing consumption and increasing efficiency Products and services: an overview of the entire life cycle	Information not available/incomplete We report on measures and technological developments that contribute to improving the energy efficiency of our products and services. A quantitative breakdown of the reduction in energy demand on the customer side is currently not provided, as actual energy consumption depends to a large extent on individual usage behavior and cannot be quantified in a robust and consistent methodological manner. For this reason, no further differentiation is currently made.

GRI 305: Emissions

GRI Standard	Disclosure	Reference	Omission/Additional Information
3‑3	Management of material topics	ESRS E1‑1 – Transition plan for climate change mitigation ESRS E1‑3 – Actions and resources in relation to climate change policies ESRS E1‑4 – Targets related to climate change mitigation and adaptation Climate protection: our path to achieving net-zero by 2040
305‑1	Direct (Scope 1) GHG emissions	ESRS E1‑6 – Gross Scopes 1, 2, 3 and total GHG emissions Climate protection: our path to achieving net-zero by 2040
305‑2	Energy indirect (Scope 2) GHG emissions	ESRS E1‑6 – Gross Scopes 1, 2, 3 and total GHG emissions Climate protection: our path to achieving net-zero by 2040
305‑3	Other indirect (Scope 3) GHG emissions	ESRS E1‑6 – Gross Scopes 1, 2, 3 and total GHG emissions
305‑4	GHG emissions intensity	ESRS E1‑6 – Gross Scopes 1, 2, 3 and total GHG emissions
305‑5	Reduction of GHG emissions	ESRS E1‑6 – Gross Scopes 1, 2, 3 and total GHG emissions Climate protection: our path to achieving net-zero by 2040

GRI 306: Waste

GRI Standard	Disclosure	Reference	Omission/Additional Information
3‑3	Management of material topics	ESRS E5‑2 – Actions and resources in relation to resource use and circular economy ESRS E5‑3 – Targets related to resource use and circular economy Circular economy: a systematic approach along the value chain
306‑1	Waste generated and significant waste-related impacts	ESRS E5‑5 – Resource outflows Circular economy: a systematic approach along the value chain
306‑2	Management of significant waste-related impacts	ESRS E5‑5 – Resource outflows Circular economy: a systematic approach along the value chain
306‑3	Waste generated	ESRS E5‑5 – Resource outflows Circular economy: a systematic approach along the value chain
306‑4	Waste diverted from disposal	ESRS E5‑5 – Resource outflows Circular economy: a systematic approach along the value chain
306‑5	Waste directed to disposal	ESRS E5‑5 – Resource outflows Circular economy: a systematic approach along the value chain

Social standards

GRI 403: Occupational health and safety

GRI Standard	Disclosure	Reference	Omission/Additional Information
3‑3	Management of material topics	ESRS S1‑1 – Policies related to own workforce
403‑1	Occupational health and safety management system	ESRS S1‑1 – Policies related to own workforce ESRS S1‑14 – Health and safety metrics
403‑2	Hazard identification, risk assessment, and incident investigation	ESRS S1-4 – Actions related to own workforce
403‑3	Occupational health services	ESRS S1-4 – Actions related to own workforce
403‑4	Worker participation, consultation, and communication on occupational health and safety	ESRS S1‑1 – Policies related to own workforce ESRS S1‑2 – Processes for engaging with own workforce and workers’ representatives about impacts
403‑5	Worker training on occupational health and safety	ESRS S1-4 – Actions related to own workforce
403‑6	Promotion of worker health	ESRS S1-4 – Actions related to own workforce Employees: promoting co-determination and strengthening employer attractiveness
403‑7	Prevention and mitigation of occupational health and safety impacts directly related to business relationships	ESRS S2-1 – Policies related to value chain workers ESRS S2-4 – Actions related to value chain workers
403‑8	Workers covered by an occupational health and safety management system	ESRS S1‑14 – Health and safety metrics
403‑9	Work-related injuries	ESRS S1‑14 – Health and safety metrics
403‑10	Work-related ill health	ESRS S1‑14 – Health and safety metrics

GRI 405: Diversity and equal opportunity

GRI Standard

Disclosure

Reference

Omission/Additional Information

3‑3

Management of material topics

ESRS S1‑1 – Policies related to own workforce

405‑1

Diversity of governance bodies and employees

ESRS 2 GOV-1 – The role of the administrative, management, and supervisory bodies

ESRS S1‑6 – Characteristics of the undertaking’s employees

ESRS S1‑9 – Diversity metrics

Age distribution in the Supervisory Board of Deutsche Telekom AG

**Age distribution in the Supervisory Board**
	Number	in %
Under 30	0	0
30 to 50	2	10
Over 50	18	90
Total	20	100

Age distribution in the Board of Management of Deutsche Telekom AG

**Age distribution in the Board of Management**
	Number	in %
Under 30	0	0
30 to 50	1	12.5
Over 50	7	87.5
Total	8	100

405‑2

Ratio of basic salary and remuneration of women to men

ESRS S1‑16 – Remuneration metrics (pay gap and total remuneration)

GRI 406: Non-discrimination

GRI Standard	Disclosure	Reference	Omission/Additional Information
3‑3	Management of material topics	ESRS S1‑1 – Policies related to own workforce
406‑1	Incidents of discrimination and corrective actions taken	ESRS S1‑17 – Incidents, complaints, and severe human rights impacts

GRI 407: Freedom of association and collective bargaining

GRI Standard

Disclosure

Reference

Omission/Additional Information

3‑3

Management of material topics

ESRS S1‑1 – Policies related to own workforce

ESRS S2‑1 – Policies related to value chain workers

407‑1

Operations and suppliers in which the right to freedom of association and collective bargaining may be at risk

Annual Report LkSG for the 2025 fiscal year

Human rights and supply chain: taking responsibility

GRI 415: Political influence

GRI Standard	Disclosure	Reference	Omission/Additional Information
3‑3	Management of material topics	Political advocacy
415‑1	Political contributions	Political advocacy

General Disclosures

GRI 2: General Disclosures

The organization and its reporting practices

Activities and workers

Governance

Strategy, policies and practices

Stakeholder engagement

GRI 3: Material topics

Economic standards

GRI 205: Anti-corruption

Environmental standards

GRI 301: Materials

GRI 302: Energy

GRI 305: Emissions

GRI 306: Waste

Social standards

GRI 403: Occupational health and safety

GRI 405: Diversity and equal opportunity

GRI 406: Non-discrimination

GRI 407: Freedom of association and collective bargaining

GRI 415: Political influence

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