# EDGAR Filing Document

**Accession Number:** 0002021938
**File Stem:** 0001193125-26-221598
**Filing Date:** 2026-5
**Character Count:** 82003
**Document Hash:** 777f17de7a214cf4e2b801a62da99fa1
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-221598.hdr.sgml**: 20260513

**ACCESSION NUMBER**: 0001193125-26-221598

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 34

**CONFORMED PERIOD OF REPORT**: 20260513

**FILED AS OF DATE**: 20260513

**DATE AS OF CHANGE**: 20260513

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Sunrise Communications AG
- **CENTRAL INDEX KEY:** 0002021938
- **STANDARD INDUSTRIAL CLASSIFICATION:** CABLE & OTHER PAY TELEVISION SERVICES [4841]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 000000000
- **STATE OF INCORPORATION:** V8
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42394
- **FILM NUMBER:** 26973197

**BUSINESS ADDRESS:**
- **STREET 1:** THURGAUERSTRASSE 101B
- **STREET 2:** GLATTPARK
- **CITY:** OPFIKON, ZURICH
- **STATE:** V8
- **ZIP:** 8152
- **BUSINESS PHONE:** 0800 300 100

**MAIL ADDRESS:**
- **STREET 1:** THURGAUERSTRASSE 101B
- **STREET 2:** GLATTPARK
- **CITY:** OPFIKON, ZURICH
- **STATE:** V8
- **ZIP:** 8152

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** LG HoldCo AG
- **DATE OF NAME CHANGE:** 20240501

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

**FORM 6-K** 

**REPORT OF FOREIGN PRIVATE ISSUER** 

**PURSUANT TO RULE 13a-16 OR 15d-16** 

**UNDER THE SECURITIES EXCHANGE ACT OF 1934** 

**For the month of May, 2026** 

**Commission File Number: 001-42394** 

## Sunrise Communications AG
**(Exact name of registrant as specified in its charter)** 

**Thurgauerstrasse 101b** 

**8152 Glattpark (Opfikon), Switzerland** 

**Tel: +41 58 777 76 66** 

**(Address of principal executive office)** 

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ☒ Form 40-F ☐

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Sunrise Communications AG (the "Company") is furnishing this Form 6-K to provide three month interim financial statements and incorporate such financial statements into the Company's registration statements referenced below.

The information set forth in this Form 6-K (excluding Exhibit 99.1) is hereby incorporated by reference into the registration statements of the Company on Form S-8 (Registration No. 333-283098 and No. 333-283426), to the extent not superseded by documents or reports subsequently filed or furnished by the Company under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended.

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**SIGNATURE** 

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

---

| | | |
|:---|:---|:---|
| **SUNRISE COMMUNICATIONS AG** | **SUNRISE COMMUNICATIONS AG** | **SUNRISE COMMUNICATIONS AG** |
| By: | /s/ Marcel Huber | /s/ Marcel Huber |
|  | Name: | Marcel Huber |
|  | Title: | General Counsel and Corporate Affairs Officer of Sunrise Communications AG |

---

Date: May 13, 2026

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**EXHIBIT** 

---

| | |
|:---|:---|
| Exhibit | Description of Exhibit |
| 99.1 | [News Release dated May 13, 2026](d154817dex991.htm) |
| 99.2 | [First Quarter 2025 Interim Financial Results](d154817dex992.htm) |

---

## Exhibit 99.1

**Exhibit 99.1**![LOGO](g154817g0513210620976.jpg)

Ad hoc announcement pursuant to Article 53 LR

Opfikon, Switzerland, 13 May 2026 – 07:00 CEST

**Q1 2026: Sunrise on track with solid financial results** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**•** **Commercial performance in line with Q1 seasonality: net customer growth of +10,000 mobile postpaid<sup>1</sup> subscriptions, increasing stabilisation of the Internet customer base (-1,000 Internet<sup>2</sup> subscriptions).** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**•** **Solid financial results: stable revenue (+0.1% YoY), increased Adjusted EBITDAaL<sup>3</sup> (+2.5% YoY), strong growth in Adjusted EBITDAaL<sup>3</sup> less P&E Additions (CAPEX<sup>4</sup>, +15.9% YoY) and stable Adjusted Free Cash Flow<sup>3,5</sup>. P&E Additions (CAPEX<sup>4</sup>) decreased (-6.6% YoY) and amounted to 18.5% of revenue. The net loss increased, whilst net cash flow from operating activities (-41.9%) and capital expenditure as disclosed in the cash-flow statement (-23.3%) decreased.** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**•** **Foundations laid for the rest of the year: launch of the innovative Sunrise Rewards programme focusing on existing loyal customers. Strategic partnership with PHOENIQS initiated to introduce B2B offers based on sovereign Swiss AI infrastructure.** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**•** **Financial guidance for 2026 is fully confirmed, including the expected dividend for the 2026 financial year<sup>9</sup> of CHF 3.49 per Class A Share and CHF 0.35 per Class B Share in 2027, representing dividend growth of over +2% YoY.** 

**Consolidated results Q1 2026** 

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| (CHF million) | **3 months<br>2025** | **3 months<br>2026** | ***Change*** | ***Change*** |  |
|  **Revenue** | **722.1** | **722.8** | **** | ***0.1*** | *%*** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Residential customers | 520.3 | 513.2 | | *(1.4* | *%)* |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Business customers and wholesale | 200.8 | 209.5 | | *4.3* | *%* |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Infrastructure & support functions | 1 | 0.1 | | *n/m* | |
|  **Adjusted EBITDAaL<sup>3</sup>** | **240.0** | **245.9** | **** | ***2.5*** | *%*** |
|  P&E Additions (CAPEX<sup>4</sup>) | (143.1) | (133.6) | | *(6.6* | *%)* |
|  Adjusted EBITDAaL<sup>3</sup> less P&E Additions (CAPEX<sup>4</sup>) | 96.9 | 112.3 | | *15.9* | *%* |
|  **Adjusted FCF<sup>3,5</sup>** | **(116.5)** | **(111.0)** | **** | ***n/m*** | **** |
|  *As reported:* |  |  |  |  |  |
|  Net loss | (1.3) | (39.4) | | *n/m* | |
|  Net cash provided by operating activities | 171.1 | 99.8 | | *(41.9* | *%)* |
|  Capital expenditures in the cash-flow statement<sup>6</sup> | (108.0) | (82.8) | | *(23.3* | *%)* |

---

*Note: The key financial figures and growth rates are presented on a rebased (IFRS) basis. Alternative definitions of key performance indicators and reconciliations can be found in the <u>appendix of this ad hoc announcement</u>.* 

«Our commercial result is in line with expectations for the first quarter, reflecting the lower market liquidity that is usual for the season. Stable revenue, combined with continued cost discipline, resulted in an improved Adjusted EBITDAaL. With Sunrise Rewards and the recently agreed partnership with PHOENIQS, we have laid important foundations in both the residential and business segments to strengthen commercial momentum over the year. We therefore fully confirm our 2026 guidance, including the targeted dividend growth», commented André Krause, CEO of Sunrise, on the Q1 2026 results.

1/6

------

![LOGO](g154817g0513210620976.jpg)

**Growth in mobile postpaid<sup>1</sup>, with increasing stabilisation in the Internet<sup>2</sup> segment** 

In a seasonally weaker market Sunrise achieved growth in customer numbers at the start of the year in the mobile postpaid<sup>1</sup> segment, with net growth amounting to +10,000 RGUs (revenue generating units). At the same time, the Internet<sup>2</sup> segment showed an increasing trend to stabilisation compared with the two preceding quarters (-1,000 RGUs compared with -2,000 in Q4 and -7,000 in Q3 2025), which is mainly attributable to stronger customer loyalty and the associated improvement in the churn rate.

The proportion of broadband customers who also used a Sunrise postpaid mobile plan showed continued growth, thanks to continued successful cross-selling. The fixed-mobile convergence rate (FMC<sup>7</sup>) rose by 2.2 percentage points YoY to 60.5%. As of 31 March 2026, Sunrise had around 3.16 million mobile, 1.28 million Internet and 0.96 million enhanced TV RGUs.

**Foundations laid for growth in the current year** 

With <u>Sunrise Rewards</u>, Sunrise launched an innovative loyalty programme in Q1 2026, which is a central component of the customer-focused strategy of **the main brand Sunrise**. The programme has been systematically and permanently embedded in the customer relationship and is expected to increase loyalty, broaden product usage and foster closer customer relationships through regular interaction, thanks to the loyalty points that can be collected. The aim is to strengthen customer retention in the long term, reduce churn and further promote cross- and upselling within the existing customer base. Following a successful silent launch in March, Sunrise Rewards will be rolled out fully in the coming days and promoted with a major campaign.

Sunrise also dominated the «<u>connect complete check 2026</u>», with the best overall package comprising network quality, premium support, mobile subscriptions and additional services, making it the test winner in six out of seven user profiles. Sunrise was the only provider to receive the top rating of «outstanding» across all user segments assessed, thereby further consolidating its strong position in **the premium segment** and demonstrating its appeal for a wide range of user needs.

In the **B2B segment** in Q1 2026, Sunrise initiated an exclusive strategic partnership with PHOENIQS. With this partnership, Sunrise will be the only Swiss telecommunications provider able to offer its business customers <u>AI solutions</u> that are developed, hosted and operated entirely in Switzerland – with no reliance on foreign cloud services. The offer targets large enterprises, the public sector and SMEs, and is specifically designed to meet the requirements of regulated industries.

**Solid financial results for Q1 2026** 

**Revenue** remained stable in Q1 2026 (+0.1% YoY), primarily due to growth in the mobile postpaid<sup>1</sup> and B2B segments, as well as in device sales. These and other factors offset the decline in the Internet<sup>2</sup> segment and the generally subdued market liquidity.

**Adjusted EBITDAaL<sup>3</sup>** increased in Q1 2026 (+2.5% YoY). This increase was supported by sustained cost efficiency and the continued optimisation of operating expenses (OPEX). Savings on external IT and professional services had a particularly significant impact and there was a favourable comparison with Q1 2025 due to the varying timing of individual costs. However, it is expected that this phasing effect will even out over the course of the year.

**P&E Additions (CAPEX<sup>4</sup>)** amounted to 18.5% of revenue in Q1 2026 and fell by -6.6% YoY. The decline is due to the fact that major infrastructure expansions have largely been completed, the investment requirements for network and customer-premise equipment (CPE) expenditure have fallen and efficiency gains have been achieved in IT and project implementations. At the same time, investments were directed specifically towards commercial platforms, products and service innovations.

The increase in **Adjusted EBITDAaL<sup>3</sup> less P&E Additions (CAPEX<sup>4</sup>)** of +15.9% YoY in Q1 2026 derived both from higher Adjusted EBITDAaL<sup>3</sup> and from lower CAPEX<sup>4</sup>. The combination of stronger operating results and reduced capital expenditure led to improved operating cash generation. **Adjusted FCF<sup>3,5</sup>** therefore remained stable in Q1 2026 due to seasonal factors and was in line with the typical cash-flow profile for the first quarter.

2/6

------

![LOGO](g154817g0513210620976.jpg)

The increase in **the net loss** from CHF 1.3 million in the same quarter of the previous year to CHF 39.4 million in Q1 2026 is primarily due to changes in financial income, in particular the absence of the exchange-rate gains achieved in the same quarter of the previous year, and to higher restructuring costs. **Net cash provided by operating activities** fell by -41.9% due to working capital movements, driven by lower liabilities and higher accounts receivable, while **capital expenditures in the cash-flow statement<sup>6</sup>** decreased by -23.3% due to lower expenditure on fixed assets and payments for capital-related provisions that differ in timing.

**Financial guidance for 2026 reconfirmed** 

With its Q1 2026 results, Sunrise has fully reconfirmed its financial guidance for 2026 as follows

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Revenue: broadly stable

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Adjusted EBITDAaL<sup>3</sup>: around CHF 1 billion

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Capital expenditure (CAPEX<sup>4</sup>)/revenue: <15%

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Adjusted FCF<sup>3,5</sup>: CHF 380 – 400 million

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Expected dividend for the 2026 financial year: CHF 3.49 per Class A Share and CHF 0.35 per Class B
Share in 2027, in line with the targeted progressive dividend policy (+>2% YoY).<sup>9</sup>

The expected dividend for the 2026 financial year will be paid exclusively from reserves from foreign capital contributions and will therefore be treated for Swiss tax purposes as a repayment of qualifying additional paid-in capital. Accordingly, the dividend for the 2026 financial year will not be subject to the 35% Swiss withholding tax. For individuals resident in Switzerland who hold the shares as private assets, the dividend is also generally not subject to Swiss income tax. Sunrise expects this tax treatment for dividends to continue in the medium-term future.

*Note: The key financial figures and growth rates are presented on a rebased (IFRS) basis. Alternative definitions of key performance indicators and reconciliations can be found in the <u>appendix of this ad hoc announcement</u>.* 

<sup>1</sup> Net additions of residential customers and B2B.

<sup>2</sup> Organic net adds of 0k in Q2 2025 and (7k) in Q3 2025 and (2k) in Q4 2025, removal of ~2k / ~3k / ~1k non-organic, non-Revenue generating customers. In Q2/Q3 the removal was part of the Interbrand Migrations, whereas the Q4 correction related to a technical clean up of legacy ADSL lines identified in January 2026 with no underlying customers, billing, or revenues. It has been adjusted in Q4 2025 to maintain comparability of organic trends; Broadband Internet Base RGU development in Q2- Q4 2025 includes the removal resulting in (2k), (3k) and (1k) as per factsheet disclosure. 

<sup>3</sup> Quantitative reconciliations to net income/loss (including net income/loss growth rates) and to cash flow from operating activities for the Adjusted EBITDA, Adjusted EBITDAaL and Adjusted FCF forecasts cannot be provided without undue effort, as neither (i) certain non-cash expenses and income, including components of non-operating income/expenses, depreciation and amortisation, and impairment losses, restructuring and other operating items included in net income/loss from continuing operations, nor (ii) specific changes in working capital affecting cash flow from operating activities, are forecast. The items that Sunrise does not forecast may vary significantly from period to period, subject to unforeseen events. 

<sup>4</sup> Excluding finance-lease additions from rental expenses, ice-hockey rights and M&A activity.

<sup>5</sup> In Q4 2024, Sunrise reached a settlement with the Canton Zurich tax authority regarding a tax audit for years 2019 to 2021 performed during the 2024. The final settlement figure agreed covered fiscal years 2019 to 2024 and amounted to approximately CHF 60m. As a result, Sunrise has recognised significant prior year taxes in the current period, which have been cash settled via amended returns on a cantonal basis largely during 2025, with diminishing phasing over the years 2026 and 2027. Adj. FCF excludes the tax-settlement-related charge and it is not included in the FY 2026 guidance due to pre-funding of the tax settlement by Liberty Global.

<sup>6</sup> Capital expenditure as part of the net outflow of cash for investing activities («Capital expenditure in cash flows from investing activities»).

<sup>7</sup> Fixed-mobile convergence indicates the number of residential customers who have subscribed to both a fixed-line broadband Internet service and a postpaid mobile service, divided by the total number of customers who have subscribed to at least one fixed-line broadband Internet service. 

<sup>8</sup> IFRS, on an adjusted basis.

<sup>9</sup> To be proposed by the Board of Directors of Sunrise upon achieving the financial guidance for the 2026 financial year and subject to approval by the Annual General Meeting.

*The investor presentation can be found on the <u>Sunrise Investor Relations website</u>. The live conference call and webcast for analysts and investors will begin at 10:00 CEST.* 

3/6

------

![LOGO](g154817g0513210620976.jpg)

---

| | |
|:---|:---|
| **Sunrise Investor Relations**<br>Alex Herrmann +41 58 777 61 00<br> <u>investor.relations@sunrise.net</u> | **Sunrise Media Relations**<br>0800 333 000<br> <u>media@sunrise.net</u> |

---

**ABOUT SUNRISE** 

Sunrise Communications AG («Sunrise»), with its strong number-two position, is the leading challenger in the Swiss telecoms market and is listed on the SIX Swiss Exchange (SUNN).

With the most comprehensive fixed-line access and a world-class mobile network, Sunrise offers the highest gigabit coverage in Switzerland, stands out through premium quality and is optimally positioned for growth. Leveraging its best-in-class, future-proof networks, Sunrise provides residential customers with high-quality mobile, fixed-line, broadband and TV services, and supports business customers from a one-stop shop with 360° communications and integrated ICT solutions for connectivity, security and IoT, thereby accelerating their digitalisation.

As of the end of March 2026, the Sunrise customer base included around 3.16 million mobile, 1.28 million broadband and 0.97 million TV customers (RGUs), as well as thousands of companies as business customers.

Sunrise fosters a dynamic and international environment where every voice is heard, perspectives are shared and values are respected. Sunrise firmly believes that equal opportunities for a diverse workforce are critical to the company's success. Around 2,900 employees (FTE) from roughly 80 nations contribute to the success of Sunrise with their expertise, innovative thinking and exceptional commitment – reflecting the diversity of our customers. <u>www.sunrise.ch</u>

**Forward-looking statements** 

This ad hoc announcement contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including projected financial and operating data, such as Sunrise's outlook for 2026, as well as expectations regarding 2026 guidance and dividend growth, subject to financial performance, legal and regulatory constraints, and Board and shareholder approvals, Sunrise's financial position, operating results, business activities, market share, the network, service revenue, Adjusted EBITDAaL, investments, the expected generation of Adjusted Free Cash Flow, its timing and intended use, expectations regarding business volume with customers, Sunrise's growth and other strategies, future growth prospects and anticipated measures to achieve growth, including the B2B strategy, Sunrise's expectations, plans and opportunities, including, amongst other things, those relating to new product and service offerings, capital expenditure levels and phasing, cost optimization initiatives, artificial intelligence-related products, services and partnerships, which remain subject to technological development and customer adoption and the associated expected timeframe and potential benefits thereof, expectations regarding net customer growth, ongoing operational efficiency improvements, the macroeconomic environment, expectations and potential increases in future dividends, the costs and terms of Sunrise's liabilities to third parties, as well as other information and statements that are not historical facts.

These forward-looking statements are based on current expectations, estimates and projections of factors affecting Sunrise's future performance and are subject to significant risks and uncertainties, some of which are beyond Sunrise's control. This could result in actual results differing materially from those expressed or implied by these statements. These risks and uncertainties include, among other things, Sunrise's ability to successfully implement its plans and strategies, the ability to realise the expected benefits arising from a series of transactions completed on 8 November 2024, as well as from the spin-off of Liberty Global Ltd.'s Swiss telecommunications business to Sunrise, and any unforeseen difficulties or costs arising therefrom. This also includes Sunrise's ability to subsequently operate successfully as an independent listed company and to maintain relationships with key business partners, as well as other factors, such as detailed filings with the US Securities and Exchange Commission (SEC), including most recently the Form 20-F filed by Sunrise and related subsequent reports.

These forward-looking statements are valid only at the time of publication of this document. Statements regarding the future are based on expectations which, in Sunrise's view, are founded on reasonable assumptions. However, there is no guarantee that these expectations will actually be realised. Even if expectations need to be adjusted due to new events, conditions or circumstances, Sunrise is under no obligation to update or revise these forward-looking statements. It should be noted that undue reliance should not be placed on forward-looking statements.

4/6

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![LOGO](g154817g0513210620976.jpg)

Appendix to the ad hoc announcement pursuant to Article 53 LR

*Non-IFRS Financial Measures* 

*This ad-hoc announcement includes financial measures that are not presented in accordance with International Financial Reporting Standards (IFRS), including Adjusted EBITDA, Adjusted EBITDAaL, Adjusted EBITDAaL less P&E Additions, and Adjusted FCF.* 

*Sunrise believes that Adjusted EBITDA and Adjusted EBITDAaL are meaningful measures because they provide a transparent view of Sunrise's recurring operating performance, which is unaffected by its capital structure, and allow management to (a) readily identify operating trends, (b) perform analytical comparisons and benchmarking between segments, and (c) identify strategies to improve operating performance.* 

*Sunrise also believes that Adjusted EBITDA and Adjusted EBITDAaL are useful to investors because they provide a basis for comparing Sunrise's performance with that of other companies in the same or similar industries.* 

*Reconciliation of non-IFRS financial measures* 

---

| | | |
|:---|:---|:---|
| **Net income – Adjusted EBITDAaL**<br> (CHF million) | **Q1 2025** | **Q1 2026** |
|  Net income (loss) | (1.3) | (39.4) |
|  Income tax expense (income) | 3.8 | (10.7) |
|  Share of losses (gains) of affiliates | (1.1) | (2.0) |
|  Net financial expense (income) | 11.3 | 65.5 |
|  Operating income (loss) | 12.7 | 13.4 |
|  Depreciation and amortisation (non-lease-related) | 233.4 | 214.0 |
|  Depreciation of right-of-use assets | 32.9 | 30.7 |
|  Share-based compensation expense | 7.3 | 5.8 |
|  Impairments, restructuring and other operating items | 2.0 | 27.5 |
|  Adjusted EBITDA (as reported) | 288.3 | 291.4 |
|  Lease-related expenses | (48.3) | (45.5) |
|  Adjusted EBITDAaL (as reported) | 240.0 | 245.9 |
|  Rebase adjustment: Pro forma Transaction Costs<sup>(1)</sup> |  |  |
|  Rebase adjustment: Transaction-related costs<sup>(2)</sup> |  |  |
|  Rebase adjustment: Transitional Services Agreements<sup>(3)</sup> |  |  |
|  Adjusted EBITDAaL (rebased) | 240.0 | 245.9 |
| **Net cash provided by operating activities – Adjusted FCF**<br> (CHF million) | **Q1 2025** | **Q1 2026** |
|  Net cash provided by operating activities | 171.1 | 99.8 |
|  Interest paid | (103.0) | (124.8) |
|  Interest-related derivative receipts (payments) | (10.2) | 30.7 |
|  Vendor financing additions | 90.8 | 86.2 |
|  Capital expenditure | (108.0) | (82.8) |
|  Principal payments on vendor financing | (133.0) | (87.5) |
|  Payments of lease liabilities | (35.3) | (39.2) |
|  Adjusted Free Cash Flow (as reported) | (127.7) | (117.6) |
|  Pro forma Transaction Costs<sup>(1)</sup> |  |  |
|  Rebase adjustment: Transaction-related Costs<sup>(2)</sup> |  |  |
|  Rebase adjustment: Tax Audit<sup>(4)</sup> | 11.2 | 6.6 |
|  Adjusted Free Cash Flow (rebased) | (116.5) | (111.0) |

---

5/6

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![LOGO](g154817g0513210620976.jpg)

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| | | |
|:---|:---|:---|
| **Capital expenditure – P&E Additions (CAPEX)**<br> (CHF million) | **Q1 2025** | **Q1 2026** |
|  Capital expenditure | 108.0 | 82.8 |
|  Mergers and acquisitions (asset deals) |  |  |
|  Recognition of sport-broadcasting rights |  |  |
|  Assets acquired under vendor financing | 15.4 | 55.3 |
|  Changes in current liabilities relating to capital expenditure (including related-party amounts) | 19.7 | (4.5) |
|  P&E Additions (CAPEX) | 143.1 | 133.6 |

---

(1) Represents certain one-time Sunrise spin-off-related costs during 2024. The above adjustment reverses the effect of these one-time costs and normalises the effect of the incremental costs so as not to
impact the underlying growth rates of the business for this non-organic impact.

(2) Represents certain recurring spin-off-related standalone costs (adjusted in the prior year comparison).

(3) Represents one or more transitional service agreements pursuant to which LGE will provide Sunrise various
administrative services to ensure an orderly transition following the spin-off. The services to be provided by LGE will include, among others, internal audit, compliance, internal controls, external reporting,
accounting, treasury, emerging business, corporate affairs and regulatory, human resources, legal, content and brand access services. The expected terms of the services are up to five years following the spin-off, depending on the individual service elements. In addition, the transitional service agreements with a five-year term are subject to an early termination right on the fourth anniversary thereof. The
aggregate charges expected to be payable by Sunrise under the transitional services agreements will decrease during the term and are approximately CHF 30.0 million for the first year.

(4) In Q4 2024, Sunrise reached a provisional settlement with the Canton Zurich tax authority regarding a tax audit
for years 2019 to 2021 performed during 2024. The provisional settlement figure agreed covered fiscal years 2019 to 2024 and amounted to approximately CHF 60m. As a result, Sunrise recognised significant prior-year taxes in Q4 2024, which have been
and will continue to be cash settled via amended returns on a cantonal basis, primarily during 2025 and 2026.

6/6

## Exhibit 99.2

![](g154817ex99_2p1g1.jpg)

Exhibit 99.2 Q1 2026 Financial Results 13 May 2026 Q1 2026 Results \| 13 May 2026 1

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![](g154817ex99_2p2g1.jpg)

Disclaimer No Offer to Sell or Solicit environment and competitive dynamics and are subject to a wide variety of significant operating trends, (b) perform analytical comparisons and benchmarking between segments and (c) identify strategies to improve operating performance. Sunrise believes risks and uncertainties, some of which are beyond the control of Sunrise, that could cause Adjusted EBITDA and Adjusted EBITDAaL are useful to investors because they provide a This presentation is not an offer to sell or a solicitation of offers to purchase or subscribe actual results to differ materially from those expressed or implied by these statements. basis for comparing Sunrise performance with the performance of other companies in the for any securities of Sunrise Communications AG (Sunrise) in any jurisdiction. This Such risks and uncertainties include, among others, Sunrise's ability to successfully same or similar industries. document is not a prospectus within the meaning of the Swiss Financial Services Act, the execute on its plans and strategies, Sunrise's ability to realize the expected benefits from Adjusted EBITDAaL less P&E Additions: Adjusted EBITDAaL less P&E Additions is defined Prospectus Regulation (EU) 2017/1129 or the UK version of Regulation (EU) 2017/1129 as the series of transactions that closed on 8 November 2024 that resulted in the spin-off of as Adjusted EBITDAaL less property and equipment additions on an accrual basis it forms part of domestic law by virtue of the European Union (Withdrawal) Act 2018 (as Liberty Global Ltd.'s Swiss telecommunications operations to Sunrise (the Transaction), (excluding those P&E additions under finance lease). Adjusted EBITDAaL less P&E amended) or under any other applicable laws. This document may constitute advertising Additions is a meaningful measure because it provides (i) a transparent view of Adjusted unanticipated difficulties or costs in connection with the Transaction, Sunrise's ability to in accordance with article 68 of the Swiss Financial Services Act. Such advertisements are EBITDAaL that remains after capital spend, which Sunrise believes is important to take successfully operate as an independent public company and maintain its relationships with communications to investors aiming to draw their attention to financial instruments. Any into account when evaluating overall performance and (ii) a comparable view of Sunrise material counterparties after the Transaction, and other factors, including those detailed performance relative to other telecommunications companies. investment decisions with respect to any securities should not be made based on such from time to time in Sunrise's filings with the U.S. Securities and Exchange Commission Adjusted Free Cash Flow: Adjusted FCF is defined as net cash provided by operating advertisement. (the SEC), including Sunrise's most recently filed Form 20-F and in subsequent reports activities, plus (a) operating-related vendor financed additions (which represents an filed with the SEC. These forward-looking statements speak only as of the date hereof. increase in the period to actual cash available as a result of extending vendor payment Forward-Looking Statements Although Sunrise believes that its expectations reflected in any such forward-looking terms beyond normal payment terms, which are typically 90 days or less, through non- cash financing activities), and (b) cash receipts in the period from interest-related statement are based upon reasonable assumptions, no assurance can be given that these This presentation contains forward-looking statements within the meaning of the Private derivatives, less (i) cash payments in the period for interest, (ii) cash payments in the expectations will be achieved. Sunrise expressly disclaims any obligation or undertaking to Securities Litigation Reform Act of 1995, including statements regarding certain forecasted period for capital expenditures, (iii) principal payments on amounts financed by vendors disseminate any updates or revisions to any forward-looking statement contained herein financial information, including Sunrise's 2026 Guidance and dividend growth and intermediaries (which represents a decrease in the period to actual cash available as a to reflect any change in their expectations with regard thereto or any change in events, expectations, its financial condition, results of operations, business, market share, result of paying amounts to vendors and intermediaries where Sunrise previously had conditions or circumstances on which any such statement is based. You are cautioned not extended vendor payments beyond the normal payment terms), and (iv) principal network, subscription Revenue, Sunrise's expected Adjusted Free Cash Flow generation, to place undue reliance on any forward-looking statement. payments on lease liabilities (which represents a decrease in the period to actual cash including the timing and expected use thereof, expectations with respect to customer available). Sunrise believes its presentation of Adjusted FCF provides useful information to trading volumes, Sunrise's growth and other strategies, future growth prospects and Non-IFRS Financial Measures investors because this measure can be used to gauge its ability to (i) service debt and (ii) anticipated methods of achieving growth, including its B2B strategies, expectations, plans fund new investment opportunities after consideration of all actual cash payments related and opportunities of Sunrise, including its new product and service offerings, pricing to its working capital activities and expenses that are capital in nature, whether paid This presentation includes financial measures not presented in accordance with actions and anticipated impacts thereof, market and competitive dynamics, capital inside normal vendor payment terms or paid later outside normal vendor payment terms International Financial Reporting Standards (IFRS), including Adjusted EBITDA, Adjusted expenditure levels and phasing, cost optimization initiatives, artificial intelligence-related (in which case payment is typically made in less than 365 days). Adjusted FCF should not EBITDAaL, Adjusted EBITDAaL less P&E Additions, and Adjusted FCF. be understood to represent Sunrise's ability to fund discretionary amounts, as they have products, services and partnerships, which remain subject to technological development various mandatory and contractual obligations, including debt repayments, that are not and customer adoption, as well as the expected timing and benefits to be derived Adjusted EBITDA: Adjusted EBITDA is defined as net income (loss) before income tax deducted to arrive at these amounts. therefrom, expectations with respect to net adds, including the reasons for such benefit (expense), share of losses (gains) of affiliates, financial income, financial expectations, ongoing operational efficiencies, expectations with respect to Sunrise's expenses, depreciation and amortisation, share-based compensation expense, and These non-IFRS financial measures should be viewed as supplements to, and not charges, the macroeconomic environment, Sunrise's future dividends and growth thereof, impairment, restructuring and other operating items. Other operating items include (a) substitutes for, IFRS measures of performance or liquidity as presented in Sunrise's IFRS the impact of the Sunrise rewards programme on customer relationships, Sunrise's provisions and provision releases related to significant litigation, (b) certain related-party financial statements. These non-IFRS financial measures have no standardized meaning under IFRS and may not be comparable to similarly titled measures reported by other intention to terminate its U.S. Securities and Exchange Act reporting obligations, including charges and (c) gains and losses on the disposition of long-lived assets. companies. They should not be considered in isolation or as an alternative for or superior the timing thereof, the amount, cost and tenor of Sunrise's third-party debt, including to IFRS measures. These measures are presented and described in order to provide anticipated future repayments of debt and other information and statements that are not Adjusted EBITDAaL: Adjusted EBITDAaL is defined as Adjusted EBITDA after lease-related additional means of understanding Sunrise's results in the same manner as its expenses. historical fact. These forward-looking statements are based on current expectations, management team. Sunrise believes Adjusted EBITDA and Adjusted EBITDAaL are meaningful measures estimates and projections about the factors that may affect Sunrise's future performance, because they represent a transparent view of Sunrise's recurring operating performance including assumptions regarding market conditions, customer behaviour, regulatory that is unaffected by its capital structure and allows management to (a) readily view Q1 2026 Results \| 13 May 2026 2 Not for release, publication or distribution, in whole or in part, directly or indirectly, in any jurisdiction in which the release, publication or distribution would be unlawful.

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Summary Q1 2026 results Key commercial roadmap deliverables executed, reinforcing momentum • Connect complete check 2026: "Best Overall Package" in Switzerland • Sunrise Rewards Programme launched to increase loyalty and accelerate cross- and upselling • Exclusive strategic partnership with PHOENIQS to offer unique sovereign Swiss AI solutions • Market liquidity seasonally lower in Q1, driving internet (1k) and postpaid +10k, visible sales acceleration from March • Price increase announced (effective from 1 August 2026) in a market that continues to be promotional within stable price bands 1 Q1 revenue in line; strong Adj. EBITDAaL growth and FY guidance reiterated • Revenue +0.1% YoY, with ongoing underlying fixed subscription revenue trends offset by stronger handset & other sales. Q1 Adj. EBITDAaL +2.5% YoY, driven by continued cost optimisation and YoY phasing • Capex spend frontloaded yet driving Adj. EBITDAaL less P&E Additions increase of +15.9% YoY • Successful implementation of new organisational set-up in Q1, with financial contributions starting from Q2 1 • FY 2026 Guidance reconfirmed, including expected DPS of CHF 3.49 with a +>2% growth YoY 2 Dividend approved and paid following AGM • FY 2025 dividend approved: CHF 3.42 per Class A Share / CHF 0.34 per Class B Share 2 • Not subject to Swiss withholding tax • Dividend payment date 13 May 2026 3 1 Per Class A Share. To be proposed by the Sunrise Board of Directors upon achieving the FY 2026 financial Guidance and subject to the approval by the Annual General Meeting of Sunrise Q1 2026 Results \| 13 May 2026 3 2 Dividends for the FY 2025 have been exclusively paid out of reserves from foreign capital contributions and hence treated as a repayment of qualifying additional paid-in capital for Swiss tax purposes. Accordingly, the dividend for the 2025 financial year is not be subject to Swiss Withholding Tax of 35%. The disclosed reserves (after FY 2025 dividend payout) from foreign capital contributions amount to CHF 2.32 bn.

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Commercial Performance Q1 2026 Results \| 13 May 2026

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«connect complete check 2026» \| Sunrise considered "Best Overall Package" by connect in Switzerland Light users: Sunrise offers the "most well-rounded package" with the most attractive price- performance ratio and the highest ratings in network and service Normal users: Sunrise sets new standards with its voice and data flat rates that are ideal for commuters between Switzerland and its neighbours Frequent users: Sunrise is the "number one for Sunrise wins 6 out of 7 user profiles in the «connect Europe nomads". In addition, there is a loyalty complete check 2026» discount that offers attractive conditions Sunrise considered the "Best Overall Package" of network quality, premium support, mobile subscriptions Family offers: Sunrise wins all three Family and extra services categories, including Normal users, Frequent users and Power users, and is considered the "optimal solution Highest rating of "outstanding" awarded for every for households with a large appetite for data" user profile as the only provider in Switzerland Source: connect complete check 2026 (https://www.connect.de/vergleich/komplettcheck-schweiz-netzbetreiber-2026-vergleichstest-3211835.html) Q1 2026 Results \| 13 May 2026 5

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Loyalty Programme \| Innovative Sunrise Rewards Programme launched as part of customer-centric consumer strategy Sunrise Rewards Programme • Innovative loyalty programme with attractive benefits including Sunrise services and exclusive access to special offers and experiences • Loyalty programme designed as a structural, long-term lever to deepen customer relationships and support the growth and value of our base, in turn improving churn and driving cross- and upselling in the base • Sunrise Rewards creates a new currency for customers to purchase incremental Sunrise products, while strong deals from the Sunrise portfolio, including Swiss Ski, Knie, FC Basel and Pathé, ensure top-quality rewards and experiences • Successful soft-launch in March 2026, broad campaign launch and full roll- out into the Sunrise base in May 2026 (reward examples) (supporting partners) (campaign launch) Q1 2026 Results \| 13 May 2026 6

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B2B \| Sunrise enters exclusive strategic partnership with PHOENIQS to offer sovereign Swiss AI solutions Partnership Rationale Market Positioning Competitor PHOENIQS with PHOENIQS is an AI pioneer in Switzerland, and the only provider to offer Swiss sovereign, end-to-end unique market Own AWS Bedrock supercomputer Infrastructureû controlled Cloud and AI solutions ✓ positioning in CH (US) (CH) Cloud Own platform OpenStack ✓û Architecture Opportunity to build Exclusive partnership to enhance Sunrise's current B2B Data competitive edge in offering with AI solutions that are developed, hosted ✓ Full control On hyperscaler û Sovereignty and operated in CH and don't exist in the market today the B2B segment Limited All models Multi-LLM✓û Selection Custom agents N / A AI Agentsû ✓ Scalability of Planned offerings tailored to large enterprises, public + Marketplace sector and SMEs, with AI components available to B2B products with partner network; roll-out of products in H2 2026 Various ISO only sizable market Certifications ✓û Note: Partnership was announced on 11 May as per Sunrise Media Release, with product roll-out to commence in H2 2026 only Q1 2026 Results \| 13 May 2026 7

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Market Environment \| Price increase announced within a promotional, but rational market environment Sunrise announces Price Increase Promotional, but rational market environment Indicative Average monthly price of B2C mobile promo rate plan offers (incl. activation fees) 1 Price Increase 2026 CH Entry – Relevant and Cheapest Offer per Network CH Flatrate – Major Brands Brands impacted Environment promotional, but rational: In the current lower market liquidity environment, telcos continue to compete via promotions, however • Market evolution supported implementation of without moving outside of existing price ranges price increase to partially offset rising demands and cost structure (e.g. rising data usage, digital services Sunrise competitive in all segments: Sunrise continues to focus on driving expansion, geopolitical developments) the inflow via its multi-brand strategy, without acting irrational or introducing • Sunrise announced price increase on Main new price points Brand & (parts of) B2B base fee up to CHF 1.50 / month (Mobile & Internet), while yallo / Lebara with CHmobile remains price follower: CHmobile capturing liquidity in C-segment increase of base fee on average of CHF 1.- (Mobile) with price follower strategy; inflow share normalized proportionate to segment size with low % of cannibalisation 1 Specific business-customer offers and bespoke B2B solutions, as well as offers from the flanker brands swype and CHmobile, Sunrise prepaid and Home Security offers, additional services (Options) and device-instalment plans are excluded from the price increase. See media communication on Sunrise.ch website for further details and specifics of the price increases Q1 2026 Results \| 13 May 2026 8

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Commercial Results \| Solid trading result in a seasonally softer market environment 31 Seasonally softer market liquidity driven by Q4 spill-over effects, with 20 18 improved sales momentum since March 12 10 • Mobile Postpaid broadly in line with Q1'25 (which saw reduced commercial Q1 2025 Q2 2025 Q3 2025 Q4 2025 Q1 2026 Postpaid activity following the PY price increase announcement), as lower Black Friday Net related activations YoY were partially offset by Flanker Brands and B2B growth 1 Additions 5 4 4 4• Internet stepping up vs Q4 as continued lower market liquidity is partially in k (2) (1) 0 (7) offset by improved underlying churn trends YoY Continued focus on driving customer-centric initiatives, such as adoption of Q1 2025 Q2 2025 Q3 2025 Q4 2025 Q1 2026 Internet Sunrise Rewards as a loyalty currency to drive cross- and upselling 58.3% 58.5% 59.0% 59.8% 60.5% 2 Fixed Mobile Convergence: Surpassing 60% cross-sell of Mobile and Fixed FMC connectivity services across brands and increasing share of wallet as % of base Q1 2025 Q2 2025 Q3 2025 Q4 2025 Q1 2026 29.3 29.7 Q1 YoY ARPU trends broadly in line with Q4'25, adjusting for increasing 28.6 29.2 28.9 6 FMC discount allocation , with a slightly lower tailwind as the prior year price increase impact moderates and subsequently fully lapses in Q2 Q1 2025 Q2 2025 Q3 2025 Q4 2025 Q1 2026 Mobile 0.7% 0.6% (0.2%) • Mobile ARPU: Driven by new Main Brand portfolio annualisation & price (1.6%) 6 3 YoY % ARPU (3.6%) increase, partially offset by lower roaming usage in CHF 5 58.0 57.9• Fixed ARPU: Decline driven by ongoing retention activity, brand mix effects 56.8 56.0 55.1 and the annualisation of UPC migrations impacts, partially offset by last year's price increase Q1 2025 Q2 2025 Q3 2025 Q4 2025 Q1 2026 Fixed H2 2026 trends expected to be supported by August Price increase 6 (4.0%) YoY % (4.5%) (4.9%) (5.0%) (5.3%) 1 2 3 Net Additions incl. Residential and B2B Defined as number of customers who subscribed to both a Fixed broadband Internet service and post-paid Mobile telephony service, divided by the total number of customers who subscribe to at least one Fixed broadband Internet service ARPU based on residential customers only; Mobile ARPU based on Mobile Subscription Revenue divided by 4 Mobile RGUs, and Fixed ARPU based on Fixed Subscription Revenue divided by Fixed customer relationships Organic net adds of 0k in Q2 2025 and (7k) in Q3 2025 and (2k) in Q4 2025, excluding removal of (2k), (3k) and (1k) as per factsheet disclosure. In Q2/Q3 the removal was part of the Interbrand Migrations, whereas the Q4 correction related to a technical clean up of legacy ADSL 5 6 lines identified in January 2026 with no underlying customers, billing, or revenues. It has been adjusted in Q4 2025 to maintain comparability of organic trends. Q1 2025 ARPU supported by one-off correction of ~CHF 0.30 Technical shift of discount allocation from Mobile to Fixed following adoption of Q2 2025 new Main Brand Mobile portfolio leading to a higher proportion of Fixed Mobile Q1 2026 Results \| 13 May 2026 9 Convergence discounts replacing product discounts and consequently drives a fair value allocation shift of these discounts from Mobile to Fixed given higher Fixed standalone pricing. For further details refer to the appendix.

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Financial Results [background image] Q1 2026 Results \| 13 May 2026

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Financial Summary \| Adj. EBITDAaL delivery driven by sustained cost optimisation and favourable phasing in CHFm, YoY Q1 Q1 Commentary on Q1 2026 Financials Δ 2025 2026 • Revenue +0.1% YoY with handset/other, B2B- and mobile +0.1% Revenue 722 723 subscription growth offsetting the decline in residential fixed-line revenues • Adj. EBITDAaL +2.5% YoY mainly from lower Opex, driven Adj. EBITDAaL 240 246 +2.5% by a combination of continued sustained savings and different 33.2% 34.0% % of Revenue YoY project phasing; tougher comparisons expected in coming quarters (including last year's employee share purchase programme uplift), despite benefits from the new organisational 1 Capex 143 134 (6.6%) set-up from Q2 19.8% 18.5% % of Revenue • Capex reduction of CHF 10m YoY, from lower Coverage, CPE and P&E. Q1'26 spend reflects frontloaded roadmap similar to Adj. EBITDAaL less 97 112 last year +15.9% P&E Additions 13.4% 15.5% % of Revenue • As a result, Adj. EBITDAaL less P&E Additions +15.9% YoY 2• Adj. FCF of CHF (111m) reflecting typical in-year seasonal cash n.m. Adj. FCF (117) (111) flow profile Note: All financial metrics are presented on a rebased IFRS basis (RB); refer to the appendix for definitions and reconciliations of alternative performance measures 1 Excluding finance lease additions, ice-hockey rights and M&A activity 2 Q1 2026 Results \| 13 May 2026 11 11 In Q4-2024, Sunrise reached a settlement with the Canton Zurich tax authority regarding a tax audit for years 2019 to 2021 performed during the 2024. The final settlement figure agreed covered fiscal years 2019 to 2024 and amounted to approximately CHF 60m. As a result, Sunrise has recognised significant prior year taxes in the current period, which have been cash settled via amended returns on a cantonal basis largely during 2025, with diminishing phasing over the years 2026 and 2027. Adj. FCF excludes the tax-settlement-related charge and it is not included in the FY 2026 Guidance due to pre- funding of the tax settlement by Liberty Global.

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Revenue \| Strong handset & Other growth alongside B2B and mobile, offset by residential fixed-line decline Revenue in CHFm, YoY Mobile Fixed Q1 2026 YoY Revenue +0.1% 1 • Residential: Fixed subscription revenue declined mainly due to +1 lower YoY ARPU (including reduced price increase tailwind). +0.1% (18) Mobile subscription revenue slightly increased on continued 723 722 postpaid subscriber growth and higher ARPU. Other (incl. non- (1) 1 subscription) revenues grew mainly from higher handset sales 7 and fees 1 1 2 • B2B & WHS: Fixed subscription revenue returned to its (19) underlying growth trend. Mobile subscription revenues benefitted 11 from continued net adds momentum, while Other revenues increased on higher handset sales, fees and WHS roaming. SME offering enhancements and sales-platform improvements expected to increasingly support subscription revenues 3 • Infra & Support: Soft decline from different phasing of BTS 1 2 3 tower sales Residential B2B & WHS Subscription Other Subscription Other Infra & Support Q1 2025 Q1 2026 Note: All financial metrics are presented on a rebased IFRS basis (RB); refer to the appendix for definitions and reconciliations of alternative performance measures. Q1 2026 Results \| 13 May 2026 12

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Adj. EBITDAaL \| Strong Adj. EBITDAaL growth driven by Opex reductions; partial reversal expected Adj. EBITDAaL 1 • Gross Profit: Decline as pressure in Residential Fixed was in CHFm, YoY partially offset by growth in B2B/WHS • Residential: Decline driven by lower fixed subscription revenues, partially offset by Mobile and Other (incl. non-subscription) +6 • B2B & WHS: Growth supported by higher subscription and Other +2.5% (incl. non-subscription), including higher fees and WHS roaming 246 3 • Infra & Support: Broadly stable including a benefit from cost phasing 240 9 2 • Opex: Strong reduction reflecting continued optimisation of (12) 1 external spend (mainly IT & professional services), supported by a 5 favourable comparison vs Q1'25, expected to normalise over the remainder of 2026 Gross Profit 1 • Leasing: Decrease reflecting ongoing lease contract optimisation, 3 with an otherwise broadly stable underlying cost base 2 3 Residential B2B & WHS Infra & Support Opex Leasing Q1 2025 Q1 2026 Note: All financial metrics are presented on a rebased IFRS basis (RB); refer to the appendix for definitions and reconciliations of alternative performance measures. Q1 2026 Results \| 13 May 2026 13

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Adj. EBITDAaL less P&E Additions & Adj. FCF \| Capex reduction YoY, Adj. FCF driven by seasonality Adj. EBITDAaL less P&E Additions Adj. FCF in CHFm, YoY in CHFm, YoY +15 +6 +15.9% n.m. o/w leases 112 (1) CHF (5.7m) (3) 3 6 (1) 4 Adj. EBITDAaL less P&E Add.: CHF 15.4m 6 97 18 (27) Total Q1 Capex: CHF 134m, (10m) YoY 10 2 1 3 6 (111) 1 2 3 (117) Q1 2025 Adj. CPE Coverage Capacity Product & Baseline Q1 2026 EBITDAaL Enablers Q1 2025 Adj. EBITDAaL Capex Interest Tax WC / Other Q1 2026 Adj. EBITDAaL less P&E Additions growth driven by Adj. EBITDAaL growth Adj. FCF In-year quarterly volatility driven by semi-annual interest payments and Capex reductions. Front-loaded 2026 spend amounted to 18.5% of revenue. and typical working capital timing Capex reductions in Q1 were mainly driven by: • Interest: Decline reflecting lower debt balance and timing effects driven by 1 changes in debt structure and derivatives as a result of last year's refinancing • Coverage: Mobile coverage rollout phasing and the annualisation of elevated transactions 1 B2B spend in Q1 2025 2 • Tax: Stable YoY with limited cash tax; cash tax excludes the settlement 1 2 • CPE: Lower volumes across segments including final migrations in 2025 related charge 3 • P&E: Decreased due to lower external project related development spend • Working Capital / Other: Net YoY decrease from higher seasonal supplier 3 payments versus Q1'25 Note: All financial metrics are presented on a rebased IFRS basis (RB); refer to the appendix for definitions and reconciliations of alternative performance measures. 1 In Q4-2024, Sunrise reached a settlement with the Canton Zurich tax authority regarding a tax audit for years 2019 to 2021 performed during the 2024. The final settlement figure agreed covered fiscal years 2019 to 2024 and amounted to approximately CHF 60m. As a result, Sunrise Q1 2026 Results \| 13 May 2026 14 has recognised significant prior year taxes in the current period, which have been cash settled via amended returns on a cantonal basis largely during 2025, with diminishing phasing over the years 2026 and 2027. Adj. FCF excludes the tax-settlement-related charge and it is not included in the FY 2026 Guidance due to pre-funding of the tax settlement by Liberty Global.

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Outlook & Dividend \| 2026 Guidance reconfirmed Dividend 2026 Guidance (IFRS, rebased) • Dividend of CHF 3.42 per Class A share (+2.7% YoY) and CHF Revenue Broadly stable 0.34 per Class B share approved at the Annual General Meeting held on 7 May 2026, resulting in a total dividend payment of CHF 251m for FY2025 (dividend payment date 13 May 2026) 1 CHF ~1bn Adj. EBITDAaL • Dividends exclusively paid out of reserves from foreign capital 4 contributions, not subject to Swiss Withholding Tax ; remaining 4 amount (after FY2025 dividend payout) of CHF 2.32bn CAPEX / < 15% Revenue Outlook 1 2 Adj. FCF CHF 380 - 400m • Q1 financials on track; strong execution across reorganisation, product delivery and pricing initiatives supports the outlook despite CHF 3.49 per Class A / softer market liquidity 3 Dividend CHF 0.35 per Class B Share (+ >2% YoY) (proposed Dividend for FY 2026)• All 2026 Guidance metrics reconfirmed 1 Quantitative reconciliations to net earnings/loss (including net earnings/loss growth rates) & cash flow from operating activities for Adj. EBITDA, Adj. EBITDAaL, and Adj. FCF Guidance cannot be provided without unreasonable efforts as we do not forecast (i) certain non-cash charges including: the components of nonoperating income/expense, depreciation and amortisation, and impairment, restructuring and other operating items included in net earnings/loss from continuing operations, nor (ii) specific changes in working capital that impact cash flows from operating activities. The items we do not forecast may vary significantly from period to period; barring unforeseen events 2 In Q4-2024, Sunrise reached a settlement with the Canton Zurich tax authority regarding a tax audit for years 2019 to 2021 performed during the 2024. The final settlement figure agreed covered fiscal years 2019 to 2024 and amounted to approximately CHF 60m. As a result, Sunrise has recognised significant prior year taxes in the current period, which have been cash settled via amended returns on a cantonal basis largely during 2025, with diminishing phasing over the years 2026 and 2027. Adj. FCF excludes the tax-settlement-related charge and it is not included in the FY 2026 Guidance due to pre-funding of the tax settlement by Liberty Global. Q1 2026 Results \| 13 May 2026 15 3 To be proposed by the Sunrise Board of Directors upon achieving the FY 2026 financial Guidance and subject to the approval by the Annual General Meeting of Sunrise 4 Dividends for the FY 2025 have been exclusively paid out of reserves from foreign capital contributions and hence treated as a repayment of qualifying additional paid-in capital for Swiss tax purposes. Accordingly, the dividend for the 2025 financial year is not be subject to Swiss Withholding Tax of 35%. The disclosed reserves (after FY 2025 dividend payout) from foreign capital contributions amount to CHF 2.32 bn.

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Final remarks Q1 2026 Results \| 13 May 2026

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Key Takeaways Launch of Innovative Sunrise Rewards programme to increase loyalty and accelerate cross- and upselling; Exclusive strategic B2B partnership with PHOENIQS to offer sovereign AI solutions 1 Product enhancements combined with sales and churn improvements, alongside the August price increase, strengthen momentum 2 FY 2025 dividend approved and paid; Q1 financials on track and supporting reconfirmation of FY 2026 Guidance incl. 1 progressive DPS (CHF 3.49 +>2% YoY) 3 1 17 Q1 2026 Results \| 13 May 2026 Per Class A Share. To be proposed by the Sunrise Board of Directors upon achieving the FY 2026 financial Guidance and subject to the approval by the Annual General Meeting of Sunrise

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Q&A Q1 2026 Results \| 13 May 2026 18

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Appendix Q1 2026 Results \| 13 May 2026

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Debt Structure Overview of debt structure and net debt (in CHFm) 1 2 31 Dec 2025 31 Mar 2026 Senior Credit Facilities 1'547 1'562 5 • Weighted Average Cost of Debt of 2.7% as of 31 March Senior Secured Notes 2'143 2'144 2026 Senior Notes 268 266 • Debt stack fully hedged against interest rate and currency Vendor Financing 387 446 changes until 2029 and fully swapped into CHF 3 4'346 4'418 Third-party Debt Obligations 488 474• Continue to access loan and bond markets opportunistically to Cross-Currency Principal term-out debt and optimise pricing 4'834 4'892 Gross Debt Cash & Cash equivalents 273 152 Net Debt 4'561 4'740 4 Debt maturity profile 61% 25% 14% 2026 2027 2028 2029 2030 2031 2032 1 4 Converted at the following exchange rates: CHF/EUR exchange rate of 1.0739, CHF/USD exchange rate of 1.2603 Relating to third-party debt obligations excluding Vendor Financing and before the impact of derivatives Q1 2026 Results \| 13 May 2026 20 2 5 Converted at the following exchange rates: CHF/EUR exchange rate of 1.0816, CHF/USD exchange rate of 1.2482 Excluding Vendor Financing and commitment fees 3 Excludes finance lease obligations

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Revenue shift from FMC discount allocation Technical shift of discount allocation included in Actuals (in CHFm) Residential customers Technical shift of discount allocation from Mobile to Q1 2025 Q2 2025 Q3 2025 Q4 2025 FY 2025 Q1 2026 Fixed: Fixed Revenue: • Adoption of the new Main Brand Mobile portfolio from Subscription 0.0 (0.4) (1.4) (2.5) (4.3) (3.7) Q2 2025 led to higher share Non-Subscription and of Fixed Mobile - - - - - Hardware Convergence (FMC) Mobile Revenue: discounts replacing legacy product-level discounts Subscription 0.0 0.4 1.4 2.5 4.3 3.7 • This resulted in a fair value Non-Subscription and reallocation of discounts - - - - - Hardware from Mobile to Fixed, - - - Other - - reflecting higher standalone Fixed pricing Total Revenue: - - - - - This appendix slide shows a supplemental APM for analytical purposes only. It does not change or restate IFRS reported results or disclosed KPIs. Reported ARPU remains the primary external metric. This adjustment simply illustrates the FMC discount allocation shift and should Q1 2026 Results \| 13 May 2026 21 be read together with the most comparable IFRS measures.

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Quarterly P&L and Cash Flow Financials - P&L 1 CHF millions Q125 RB Q225 RB 2025 RB (H1) Q325 RB Q425 RB 2025 RB Q126 RB Revenue 722.1 731.6 1'453.7 740.9 788.8 2'983.4 722.8 Growth % 0.1 % CoS 184.3 191.7 376.0 201.5 253.7 831.2 191.0 Gross Profit 537.8 539.9 1'077.7 539.4 535.1 2'152.2 531.8 Growth % (1.1)% Margin % 74.5 % 73.8 % 74.1 % 72.8 % 67.8 % 72.1 % 73.6 % OPEX 249.5 238.5 488.0 221.6 244.6 954.2 240.4 SBC 7.3 16.2 23.5 15.9 9.6 49.0 5.8 Adjustments (7.3) (16.2) (23.5) (15.9) (9.6) (49.0) (5.8) Adj. EBITDA 288.3 301.4 589.7 317.8 290.5 1'198.0 291.4 Leases 48.3 47.3 95.6 47.7 47.8 191.1 45.5 Adj. EBITDAaL 240.0 254.1 494.1 270.1 242.7 1'006.9 245.9 Growth % 2.5 % Margin % 33.2 % 34.7 % 34.0 % 36.5 % 30.8 % 33.8 % 34.0 % 2 P&E Additions (CAPEX) 143.1 116.4 259.5 106.1 113.1 478.7 133.6 % of Revenue 19.8 % 15.9 % 17.9 % 14.3 % 14.3 % 16.0 % 18.5 % CPE 26.6 22.8 49.4 22.4 21.0 92.8 22.7 Coverage 20.8 18.9 39.7 20.2 19.5 79.4 14.4 Capacity 14.4 16.0 30.4 13.8 14.8 59.0 17.0 Product & Enablers 21.2 28.8 50.0 20.5 21.4 91.9 18.5 Baseline 60.1 29.9 90.0 29.2 36.4 155.6 61.0 Adj. EBITDA less P&E add. 145.2 185.0 330.2 211.7 177.4 719.3 157.8 Adj. EBITDAaL less P&E add. 96.9 137.7 234.6 164.0 129.6 528.2 112.3 Growth % 15.9 % % of Revenue 13.4 % 18.8 % 16.1 % 22.1 % 16.4 % 17.7 % 15.5 % Interest (97.3) (2.6) (99.9) (50.2) (8.0) (158.1) (79.3) Tax (0.2) (1.0) (1.2) (5.1) (1.4) (7.7) (1.0) Working Capital & Other (115.9) 19.2 (96.7) (72.0) 186.0 17.3 (143.0) o/w Leasing (2.9) 13.2 10.3 (12.7) 11.3 8.9 (8.6) Adj. FCF (116.5) 153.3 36.8 36.7 306.2 379.7 (111.0) 1 RB = Rebased 2 Q1 2026 Results \| 13 May 2026 22 Excluding additions from leases, ice-hockey rights and M&A activity

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Quarterly segment split Financials - Revenue split CHF millions Q125 Q225 2025 (H1) Q325 Q425 2025 Q126 Revenue 722.1 731.6 1'453.7 740.9 788.8 2'983.4 722.8 Growth % 0.1 % Residential Customers 520.3 521.3 1'041.6 519.1 546.5 2'107.2 513.2 Fixed Revenue 250.9 245.9 496.8 238.1 239.1 974.0 233.5 o/w Subscription 239.4 237.5 476.9 230.7 226.0 933.6 220.9 o/w Non-Subscription & Hardware 11.5 8.4 19.9 7.4 13.1 40.4 12.6 Mobile Revenue 245.1 249.8 494.9 252.2 280.8 1'027.9 254.1 o/w Subscription 201.8 206.3 408.1 209.0 204.8 821.9 202.4 o/w Non-Subscription & Hardware 43.3 43.5 86.8 43.2 76.0 206.0 51.7 Other 24.3 25.6 49.9 28.8 26.6 105.3 25.6 Business Customers & Wholesale 200.8 208.0 408.8 216.2 234.0 859.0 209.5 Fixed Revenue 117.4 120.8 238.2 127.3 140.4 505.9 118.6 o/w Subscription 76.4 77.0 153.4 76.7 76.9 307.0 77.2 o/w Non-Subscription & Hardware 41.0 43.8 84.8 50.6 63.5 198.9 41.4 Mobile Revenue 82.7 86.3 169.0 87.1 91.0 347.1 88.2 o/w Subscription 65.8 67.4 133.2 67.6 67.1 267.9 67.0 o/w Non-Subscription & Hardware 16.9 18.9 35.8 19.5 23.9 79.2 21.2 Other 0.7 0.9 1.6 1.8 2.6 6.0 2.7 Infrastructure & Support Functions 1.0 2.3 3.3 5.6 8.3 17.2 0.1 Other 1.0 2.3 3.3 5.6 8.3 17.2 0.1 Q1 2026 Results \| 13 May 2026 23

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Quarterly segment split (cont'd) Financials - P&L 2 CHF millions Q125 RB Q225 RB 2025 RB (H1) Q325 RB Q425 RB 2025 RB Q126 Revenue 722.1 731.6 1'453.7 740.9 788.8 2'983.4 722.8 Growth % 0.1 % Residential Customers 520.3 521.3 1'041.6 519.1 546.5 2'107.2 513.2 Business Customers & Wholesale 200.8 208.0 408.8 216.2 234.0 859.0 209.5 Infrastructure & Support Functions 1.0 2.3 3.3 5.6 8.3 17.2 0.1 CoS 184.3 191.7 376.0 201.5 253.7 831.2 191.0 1 Gross Profit 537.8 539.9 1'077.7 539.4 535.1 2'152.2 531.8 Growth % (1.1)% Margin % 74.5 % 73.8 % 74.1 % 72.8 % 67.8 % 72.1 % 73.6 % Residential Customers 404.0 404.9 809.0 400.7 392.1 1'601.8 392.0 Business Customers & Wholesale 135.7 136.1 271.8 138.6 139.9 550.3 140.8 Infrastructure & Support Functions (1.9) (1.2) (3.1) 0.1 3.1 0.1 (1.0) OPEX 249.5 238.5 488.0 221.6 244.6 954.2 240.4 SBC 7.3 16.2 23.5 15.9 9.6 49.0 5.8 Adjustments (7.3) (16.2) (23.5) (15.9) (9.6) (49.0) (5.8) Adj. EBITDA 288.3 301.4 589.7 317.8 290.5 1'198.0 291.4 Leases 48.3 47.3 95.6 47.7 47.8 191.1 45.5 1 Adj. EBITDAaL 240.0 254.1 494.1 270.1 242.7 1'006.9 245.9 Growth % 2.5 % Margin % 33.2 % 34.7 % 34.0 % 36.5 % 30.8 % 33.8 % 34.0 % Residential Customers 280.5 296.9 577.5 303.0 278.6 1'159.0 277.1 Business Customers & Wholesale 103.3 102.3 205.6 109.7 108.0 423.4 107.3 Infrastructure & Support Functions (143.9) (145.1) (289.0) (142.6) (143.9) (575.5) (138.5) (1) Due to rounding, numbers presented may not add up precisely to the totals provided (2) RB = Rebased Q1 2026 Results \| 13 May 2026 24

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Operational KPI's – Customer relationships Customer Relationships Q125 Q225 2025 (H1) Q325 Q425 2025 Q126 Fixed Customer Relationships represent the number of customers who receive at least one of Sunrise's broadband internet, TV or fixed-line telephony services, without regard to which or to how many services they subscribe. Fixed Customer Relationships generally are counted on a unique premises basis. Accordingly, if an individual receives Sunrise's services in two premises o/w Fixed (e.g., a primary home and a vacation home), that individual generally will count as two Fixed Customer Relationships. Sunrise's fixed customer relationships include customers who receive Basic Cable Services ("BCS") which are services delivered without the use of encryption-enabling, integrated or virtual technology as well as customers who receive fixed telephony services over Sunrise's networks, or that Sunrise services through a partner network. Residential 1'374'041 1'360'565 1'360'565 1'346'989 1'341'515 1'341'515 1'329'764 1 Business 123'009 130'321 130'321 131'711 133'099 133'099 134'273 Fixed-mobile convergence penetration represents the number of customers who subscribe to both Convergence (FMC Penetration) a fixed broadband internet service and pre- or postpaid mobile telephony service, divided by the total number of customers who subscribe to fixed broadband internet service. Residential 58.3% 58.5% 58.5% 59.0% 59.8% 59.8% 60.5% 2 Business 77.9% 77.2% 77.2% 77.2% 77.4% 77.4% 77.4% (1) Business-customer and wholesale fixed relationships and fixed RGUs include customers who receive fixed services that are the same or similar to mass-marketed products offered to residential customers. This includes customers who receive discounted services pursuant to a programme Sunrise has in place with their employer and small business customers (generally defined as businesses with 9 or fewer employees) and does not include services provided to small-medium business customers (generally defined as businesses with 10 to 249 employees) and large enterprises (generally defined as businesses with 250 or more employees) or wholesale services. (2) Business customer and wholesale Mobile RGUs represent the number of active SIM cards in service that are provided to business and wholesale customers, including customers who receive discounted services pursuant to a program Sunrise has in place with their employer, SOHO, SME and large enterprise customers, as well as to customers who subscribed for mobile services delivered over Sunrise's networks through a branded reseller with whom Sunrise contracts, and excluding customers who subscribed for mobile services delivered over Sunrise's networks through a MVNO with whom Sunrise contracts, as well as other wholesale customers. Q1 2026 Results \| 13 May 2026 25

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Operational KPIs – Base RGUs 1 Base RGUs Q125 Q225 2025 (H1) Q325 Q425 2025 Q126 Internet Subscribers are homes, residential multiple dwelling units or commercial units that Broadband Internet receive fixed broadband internet services over Sunrise's fixed or mobile networks or that Sunrise services through a partner network. Residential 1'157'973 1'152'349 1'152'349 1'141'387 1'137'803 1'137'803 1'135'407 2 Business 140'049 143'389 143'389 144'496 145'834 145'834 146'795 Enhanced TV Subscribers are homes, residential multiple dwelling units or commercial units that receive Sunrise's enhanced TV services, which are TV services delivered through encryption- Enhanced TV enabling, integrated or virtual technology over Sunrise's broadband network or through a partner network. Enhanced TV Subscribers exclude subscribers that receive BCS. Residential 892'585 882'635 882'635 870'668 867'576 867'576 859'598 2 Business 91'226 93'660 93'660 94'556 96'484 96'484 96'970 A Mobile RGU is a Mobile Subscriber, which represents an active SIM card in service. A subscriber Mobile RGUs who has a data and voice plan for a mobile handset and a data plan for a laptop would be counted as two Mobile Subscribers. Residential 2'348'854 2'349'000 2'349'000 2'336'901 2'339'425 2'339'425 2'336'642 3 Business 784'158 797'167 797'167 812'724 819'580 819'580 825'478 Mobile Postpaid RGUs Numbers of Mobile products (Postpaid) Residential 2'076'312 2'081'252 2'081'252 2'084'589 2'106'223 2'106'223 2'109'805 3 Business 741'262 754'703 754'703 771'771 781'616 781'616 788'497 (1) A Fixed RGU is, separately, an Internet Subscriber or an Enhanced TV Subscriber. A home, residential multiple dwelling unit or commercial unit may contain one or more RGUs. For example, if a residential customer subscribed to Sunrise's broadband internet service or enhanced TV service, the customer would constitute two RGUs. RGUs generally are counted on a unique premises basis such that a given premise does not count as more than one RGU for any given service. However, if an individual receives one of Sunrise's services in two premises (e.g., a primary home and a vacation home), that individual will count as two RGUs for that service. Each bundled internet or enhanced TV service is counted as a separate RGU regardless of the nature of any bundling discount or promotion. Non-paying subscribers are counted as subscribers during their free promotional service period. Some of these subscribers may choose to disconnect after their free service period. Services offered without charge on a long-term basis (e.g., certain preferred subscribers) generally are not counted as RGUs. Free services provided to Sunrise employees generally are counted as RGUs. (2) Business-customer and wholesale fixed relationships and fixed RGUs include customers who receive fixed services that are the same or similar to mass-marketed products offered to residential customers. This includes customers who receive discounted services pursuant to a programme Sunrise has in place with their employer and small business customers (generally defined as businesses with 9 or fewer employees) and does not include services provided to small-medium business customers (generally defined as businesses with 10 to 249 employees) and large enterprises (generally defined as businesses with 250 or more employees) or wholesale services. (3) Business customer and wholesale Mobile RGUs represent the number of active SIM cards in service that are provided to business and wholesale customers, including customers who receive discounted services pursuant to a program Sunrise has in place with their employer, SOHO, SME and large enterprise customers, as well as to customers who subscribed for mobile services delivered over Sunrise's networks through a branded reseller with whom Sunrise contracts, and excluding customers who subscribed for mobile services delivered over Sunrise's networks through a MVNO with whom Sunrise contracts, as well as other wholesale customers. Q1 2026 Results \| 13 May 2026 26

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Operational KPIs – ARPU Residential ARPU (Residential) Q125 Q225 2025 (H1) Q325 Q425 2025 (H2) 2025 Q126 Subscription Revenue CHFm 441 444 885 440 431 871 1'756 423 Fixed CHFm 239 238 477 231 226 457 934 221 Mobile CHFm 202 206 408 209 205 414 822 202 Endbase Fixed - Customer Relationships # 1'374'041 1'360'565 1'360'565 1'346'989 1'341'515 1'341'515 1'341'515 1'329'764 Mobile - RGUs # 2'348'854 2'349'000 2'349'000 2'336'901 2'339'425 2'339'425 2'339'425 2'336'642 Average Base Fixed - Customer Relationships # 1'374'913 1'367'303 1'368'175 1'353'777 1'344'252 1'351'040 1'335'640 Mobile - RGUs # 2'348'262 2'348'927 2'348'335 2'342'951 2'338'163 2'344'213 2'338'034 Average Revenue Per Unit ("ARPU") is the average subscription revenue per ARPU average fixed customer relationship or mobile subscriber, as applicable. ARPU per fixed customer relationship is calculated by dividing the average Fixed CHF subscription revenue from residential fixed services by the average of the 58.0 57.9 58.1 56.8 56.0 56.3 55.1 opening and ending balance of fixed customer relationships for the period. ARPU per mobile subscriber is calculated by dividing the average mobile subscription revenue (including interconnect revenue but excluding handset Mobile CHF 28.6 29.3 29.0 29.7 29.2 29.4 28.9 sales and late fees) by the average of the opening and ending balance of mobile subscribers in service for the period. Q1 2026 Results \| 13 May 2026 27

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Rebase information Rebase Information Rebase results, which are non-IFRS measures, are presented as a basis for assessing growth rates on a comparable basis. Rebase information is provided to show the results of the business without the impact of certain acquisition-related, transaction-related, or certain other amounts that are not organic in nature to the results of the business. As such, rebase results below do not include future transaction specific adjustments, for example, any future incremental costs of Sunrise being a separately listed company or the impact of any future service agreement between Liberty Global and Sunrise, etc. Investors should view rebased results as a supplement to, and not a substitute for, IFRS measures of performance included in Sunrise's consolidated statements of operations. Three months ended March 31, 2025 Three months ended June 30, 2025 Three months ended September 30, 2025 Three months ended December 31, 2025 Three months ended March 31, 2026 Revenue Adjusted Adjusted Adjusted Adjusted Revenue Adjusted Adjusted Adjusted Adjusted Revenue Adjusted Adjusted Adjusted Adjusted Revenue Adjusted Adjusted Adjusted Adjusted Revenue Adjusted Adjusted Adjusted Adjusted EBITDA EBITDAaL EBITDAaL FCF EBITDA EBITDAaL EBITDAaL FCF EBITDA EBITDAaL EBITDAaL FCF EBITDA EBITDAaL EBITDAaL FCF EBITDA EBITDAaL EBITDAaL FCF less P&E less P&E less P&E less P&E less P&E Additions Additions Additions Additions Additions CHF in millions As Reported 722.1 288.3 240.0 96.9 (127.7) 731.6 301.4 254.1 137.7 144.5 740.9 317.8 270.1 164.0 30.6 788.8 290.5 242.7 129.6 302.8 722.8 291.4 245.9 112.3 (117.6) Pro forma Transaction — — (1) — — — — — — — — — — — — — — — — — — 3.4 — — — — costs As Reported Pro Forma 722.1 288.3 240.0 96.9 (127.7) 731.6 301.4 254.1 137.7 144.5 740.9 317.8 270.1 164.0 30.6 788.8 290.5 242.7 129.6 306.2 722.8 291.4 245.9 112.3 (117.6) Rebased (2) Tax audit — — — — 11.2 — — — — 8.8 — — — — 6.1 — — — — — — — — — 6.6 Rebased Results 722.1 288.3 240.0 96.9 (116.5) 731.6 301.4 254.1 137.7 153.3 740.9 317.8 270.1 164.0 36.7 788.8 290.5 242.7 129.6 306.2 722.8 291.4 245.9 112.3 (111.0) Three months ended March 31, 2025 Three months ended June 30, 2025 Three months ended September 30, Three months ended December 31, 2025 2025 Residential Business Infrastructu Total Residential Business Infrastructu Total Residential Business Infrastructu Total Residential Business Infrastructu Total Customers Customers re & Customers Customers re & Customers Customers re & Customers Customers re & & Support & Support & Support & Support Wholesale Functions Wholesale Functions Wholesale Functions Wholesale Functions As Reported Gross Profit 403.1 136.6 (1.9) 537.8 404.2 136.9 (1.2) 539.9 400.1 139.2 0.1 539.4 391.6 140.4 3.1 535.1 Cost Reallocation 0.9 (0.9) — — 0.7 (0.7) — — 0.6 (0.6) — — 0.5 (0.5) — — (3) Rebased Results 404.0 135.7 (1.9) 537.8 404.9 136.1 (1.2) 539.9 400.7 138.6 0.1 539.4 392.1 139.9 3.1 535.1 Three months ended March 31, 2025 Three months ended June 30, 2025 Three months ended September 30, Three months ended December 31, 2025 2025 Residential Business Infrastructu Total Residential Business Infrastructu Total Residential Business Infrastructu Total Residential Business Infrastructu Total Customers Customers re & Customers Customers re & Customers Customers re & Customers Customers re & & Support & Support & Support & Support Wholesale Functions Wholesale Functions Wholesale Functions Wholesale Functions As Reported EBITDAaL 279.6 104.3 (143.9) 240.0 296.1 103.1 (145.1) 254.1 302.4 110.3 (142.6) 270.1 278.1 108.5 (143.9) 242.7 Cost Reallocation 1.0 (1.0) — — 0.8 (0.8) — — 0.6 (0.6) — — 0.5 (0.5) — — (3) Rebased Results 280.5 103.3 (143.9) 240.0 296.9 102.3 (145.1) 254.1 303.0 109.7 (142.6) 270.1 278.6 108.0 (143.9) 242.7 (1) Represents certain one-time Sunrise Spin-Off related costs during 2024. The above adjustment reverses the effect of these one-time costs and normalises the effect of the incremental costs as to not impact the underlying growth rates of the business for this non-organic impact. (2) In Q4-2024, Sunrise reached a settlement with the Canton Zurich tax authority regarding a tax audit for years 2019 to 2021 performed during the 2024. The final settlement figure agreed covered fiscal years 2019 to 2024 and amounted to approximately CHF 60m. As a result, Sunrise has recognised significant prior year taxes in the current period, which will be cash settled via amended returns on a cantonal basis largely during 2025, Q wi 1 th 2 di0 m2 ini6 shi R nge pha su sing lts over \| the 13 year Msay 202 62 an 0d 2 26 027. 28 (3) Due to rounding, numbers presented may not add up precisely to the totals provided

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Non-IFRS Reconciliations Three months ended Three months ended 31-Mar-26 31-Mar-25 30-Jun-25 30-Sept-25 31-Dec-25 CHF in millions CHF in millions Adjusted EBITDA and Adjusted EBITDAaL: Net income (loss) (39.4) (1.3) (53.6) (4.4) (49.2) Income tax expense (benefit) (10.7) 3.8 (15.8) (1.6) (6.3) Share of gains of equity method investments (2.0) (1.1) (3.0) (0.5) (1.3) Net financial expense (income) 65.5 11.3 97.6 52.4 69.2 Operating income (loss) 13.4 12.7 25.2 45.9 12.4 Depreciation and amortisation (non-lease related) 214.0 233.4 222.8 223.4 256.8 Depreciation of right-of-use assets 30.7 32.9 32.1 32.4 32.5 Share-based compensation expense 5.8 7.3 16.2 15.9 9.6 Restructuring & other 27.5 2.0 5.1 0.2 (20.8) Adjusted EBITDA 291.4 288.3 301.4 317.8 290.5 Lease-related expenses (45.5) (48.3) (47.3) (47.7) (47.8) Adjusted EBITDAaL 245.9 240.0 254.1 270.1 242.7 Three months ended Three months ended 31-Mar-26 31-Mar-25 30-Jun-25 30-Sept-25 31-Dec-25 CHF in millions CHF in millions Adjusted EBITDAaL less P&E Additions (CAPEX): Adjusted EBITDAaL 245.9 240.0 254.1 270.1 242.7 P&E Additions (CAPEX): 133.6 143.1 116.4 106.1 113.1 Adjusted EBITDAaL less P&E Additions (CAPEX) 112.3 96.9 137.7 164.0 129.6 Three months ended Three months ended 31-Mar-26 31-Mar-25 30-Jun-25 30-Sept-25 31-Dec-25 CHF in millions CHF in millions Adjusted Free Cash Flow: Net cash provided by operating activities 99.8 171.1 290.5 292.1 461.5 Interest paid (124.8) (103.0) (32.9) (104.7) (20.7) Interest-related derivative receipts (payments) 30.7 (10.2) 15.6 39.2 (2.7) Vendor financing additions (i) 86.2 90.8 97.6 115.3 102.0 Capital expenditures (82.8) (108.0) (165.9) (95.0) (130.6) Principal payments on vendor financing (87.5) (133.0) (41.2) (170.6) (85.9) Payments of lease liabilities (39.2) (35.3) (19.4) (45.6) (20.7) Adjusted Free Cash Flow (117.6) (127.7) 144.5 30.6 302.8 Three months ended Three months ended 31-Mar-26 31-Mar-25 30-Jun-25 30-Sept-25 31-Dec-25 CHF in millions CHF in millions P&E Additions (CAPEX): Capital expenditures 82.8 108.0 165.9 95.0 130.6 Mergers and acquisitions (asset deals) — — (3.0) (2.8) (4.4) Recognition of sports broadcasting rights — — — (218.7) — Assets acquired under vendor financing 55.3 15.4 16.5 16.4 9.2 Changes in current liabilities related to capital expenditures (including related-party amounts) (4.5) 19.7 (63.0) 216.2 (22.3) P&E Additions (CAPEX) 133.6 143.1 116.4 106.1 113.1 (i) For purposes of Sunrise's consolidated statements of cash flows, vendor financing additions represent operating related expenses financed by an intermediary that are treated as constructive operating cash outflows and constructive financing cash inflows when the intermediary settles the liability with the vendor. When Sunrise pays the financing intermediary, it records financing cash outflows in its consolidated statements of cash flows. For purposes of its Adjusted Free Cash Flow definition, Sunrise (A) adds in the constructive financing cash inflow when the intermediary settles the liability with the vendor as its actual net cash available at that time is not affected and (B) subsequently deducts the related financing cash outflow when Sunrise actually pays the financing intermediary, reflecting the actual reduction to its cash available to service debt or fund new investment opportunities. Q1 2026 Results \| 13 May 2026 29

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Contact Information Investor Relations Sunrise investor.relations@sunrise.net Thurgauerstrasse 101B +41 58 777 61 00 8152 Glattpark (Opfikon) Switzerland Q1 2026 Results \| 13 May 2026