# EDGAR Filing Document

**Accession Number:** 0002021938
**File Stem:** 0001193125-25-319183
**Filing Date:** 2025-12
**Character Count:** 9192
**Document Hash:** 4a2e1519d4e4c6ff83d50dbf0b71fd2c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-319183.hdr.sgml**: 20251215

**ACCESSION NUMBER**: 0001193125-25-319183

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 3

**CONFORMED PERIOD OF REPORT**: 20251215

**FILED AS OF DATE**: 20251215

**DATE AS OF CHANGE**: 20251215

**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:** 251571573

**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 December, 2025** 

**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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**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.

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| | | |
|:---|:---|:---|
| **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 |

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Date: December 15, 2025

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**EXHIBIT** 

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| | |
|:---|:---|
| Exhibit | Description of Exhibit |
| 99.1 | [News Release dated December 15, 2025](d17561dex991.htm) |

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## Exhibit 99.1

**Exhibit 99.1**![LOGO](g17561g1215191532598.jpg)

Ad hoc announcement pursuant to Article 53 LR

Opfikon, Switzerland, 15 December 2025 – 07:00 CET

**Sunrise announces date of termination of its sponsored Class B ADS program** 

**•** **Termination of sponsored Class B ADS program to become effective as of 30 January 2026** 

**•** **C. 99% of the Class B ADSs were exchanged for Sunrise Class B Shares on a net basis as of 12 December 2025** 

**•** **Class B Shares underlying the Class B ADSs remaining with the Depositary Bank after termination to be exchanged into Class A Shares and to be sold by the Depositary Bank** 

Following the termination of the sponsored Sunrise Class A ADS program on 13 November 2025, Sunrise announces today that it has instructed J.P. Morgan Chase Bank, N.A (the Depositary Bank) to terminate its sponsored Class B ADS program. The termination of the sponsored Class B ADS program will take effect on 30 January 2026.

As of 12 December 2025, c. 99% of the Class B ADSs have been exchanged for Sunrise Class B Shares on a net basis with approximately 300,000 Class B ADSs outstanding.

Following the termination of the Class B ADS program, the Depositary Bank will exchange any Sunrise Class B Shares underlying outstanding Class B ADSs that continue to remain on deposit with the Depositary Bank into Sunrise Class A Shares (at a ratio of 10 Sunrise Class B Shares for one Sunrise Class A Share) in accordance with Sunrise's governing documents, sell the resulting Sunrise Class A Shares and disburse the resulting net proceeds (less fees owing to the Depository Bank), pro rata, to the applicable former Sunrise Class B ADS holders in accordance with, and subject to, the Class B Deposit Agreement. As previously announced, an amendment to the Class B ADS Deposit Agreement has become effective to permit the Depositary Bank (at termination effective time) to exchange any Sunrise Class B Shares underlying remaining Sunrise Class B ADSs for Sunrise Class A Shares prior to their sale.

Holders of Sunrise Class B ADSs will be notified by the Depositary Bank of the details relating to the termination of the Class B ADS program in accordance with the Class B Deposit Agreement, as amended. The Depositary Bank is expected to close the Class B ADS issuance book at the time it provides notification of the details relating to the termination of the Class B ADS program to the Class B ADS holders pursuant to the Class B Deposit Agreement and the Class B ADS cancellation books will be closed as of 5:00 pm EST on 30 January 2026 when the termination of the Class B ADS program becomes effective.

Class B ADS holders will not be able to cancel their Class B ADSs and withdraw the underlying Sunrise Class B Shares once the Class B ADS cancellation books are closed. Holders of Sunrise Class B ADSs that want to avoid having the underlying Sunrise Class B Shares exchanged for Sunrise Class A Shares and sold by the Depositary Bank following the termination of the Class B ADS program are advised to withdraw such Sunrise Class B Shares before the termination becomes effective at 5:00 pm EST on 30 January 2026.

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| | |
|:---|:---|
| **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> |

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![LOGO](g17561g1215191532598.jpg)

**ABOUT SUNRISE** 

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

With the most comprehensive landline network access and a world-class mobile network, Sunrise offers the highest gigabit coverage in Switzerland, stands out for premium quality and is optimally equipped for growth. With its world-class, future-proof networks, Sunrise offers private customers high-quality mobile, landline, broadband and TV services and supports business customers from a one-stop shop with 360° communication and integrated ICT solutions for connectivity, security and IoT to accelerate their digitalisation.

As of the end of September 2025, the Sunrise customer base included around 3.15 million mobile, 1.29 million broadband and 0.97 million TV customers (RGUs), as well as thousands of companies as business customers.

Sunrise boasts a dynamic and international environment where everyone has a voice, where perspectives are shared and where values are respected. Sunrise believes that providing equal opportunities to a diverse workforce is critical to the company's success. Roughly 2,850 employees (FTEs) from around 80 nations contribute to the success of Sunrise with their expertise, innovative thinking and exceptional commitment, reflecting the diversity of its 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 statements regarding Sunrise's expectations with respect to the termination of its Sunrise Class B ADS program, including the timing, cost, and benefits to be derived therefrom, as well as other information and statements that are not historical fact. These forward-looking statements are based on current expectations, estimates and projections are subject to a wide variety of significant risks and uncertainties, some of which are beyond the control of Sunrise, that could cause actual results to differ materially from those expressed or implied by these statements.

Such risks and uncertainties include, among others, Sunrise's ability to successfully execute on its plans and strategies and other factors, including those detailed from time to time in Sunrise's filings with the U.S. Securities and Exchange Commission (the SEC), including Sunrise´s most recently filed Form 20-F and in subsequent reports filed with the SEC.

These forward-looking statements speak only as of the date hereof. Although Sunrise believes that its expectations reflected in any such forward-looking statement are based upon reasonable assumptions, no assurance can be given that these expectations will be achieved. Sunrise expressly disclaims any obligation or undertaking to disseminate any updates or revisions to any forward-looking statement contained herein to reflect any change in their expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based. You are cautioned not to place undue reliance on any forward-looking statement.

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