Swisscom AgSIX: SCMN

Q1 Interim report January – March 2026

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Interim Report 2026

Contents

KPIs Group

3

Notes to the interim financial statements

15

About this report

15

KPIs segments

4

1 Changes in accounting principles

15

2 Segment information

15

Financial review

5

3 Operating costs

18

Summary

5

4 Dividend

18

Depreciation and amortisation, non-operating results

8

5 Financial liabilities

19

Cash flows

9

6 Financial result

19

Net asset position

9

7 Net current operating assets

20

Financial outlook

10

8 Provisions and contingent liabilities

21

Consolidated interim financial statements

11

Alternative performance measures

22

Consolidated statement of

Reconciliation of alternative performance measures

23

comprehensive income (unaudited)

11

Consolidated balance sheet (unaudited)

12

Further information

25

Consolidated statement of cash flows (unaudited)

13

Share information

25

Consolidated statement of changes in equity (unaudited) 14

Quarterly review 2025 and 2026 26

Disclaimer 28

Q1 2026

‌KPIs Group

Revenue

3,606

3,759

(153)

-4.1%

EBITDA after lease expense (EBITDAaL)

1,288

1,277

10

0.8%

Capital expenditure

693

780

(86)

-11.0%

Operating free cash flow

594

498

96

19.3%

Free cash flow

586

471

115

24.3%

Net income

332

367

(35)

-9.6%

Equity

11,157

12,598

(1,441)

-11.4%

Net debt

16,176

15,634

542

3.5%

In CHF million, except where indicated Financial data1 Q1 2025 Change in % Operational data Switzerland

Postpaid value connections

thousand

4,421

4,403

19

0.4%

Broadband connections

thousand

1,918

1,953

(34)

-1.8%

TV connections

thousand

1,445

1,481

(36)

-2.4%

Fixed telephony connections

thousand

989

1,070

(81)

-7.5%

Wholesale wireline access lines

thousand

782

742

40

5.4%

Operational data Italy

Wireless connections

thousand

19,907

20,214

(308)

-1.5%

Broadband connections

thousand

5,550

5,662

(112)

-2.0%

Wholesale wireless connections

thousand

8,190

6,787

1,403

20.7%

Wholesale wireline access lines

thousand

1,194

968

226

23.3%

Swisscom share

Number of issued shares

thousand

51,802

51,802

-

-

Market capitalisation

34,552

26,393

8,159

30.9%

Closing price

CHF

667.00

509.50

157.50

30.9%

Employees

Full-time equivalent employees number

23,073

23,717 (643) -2.7%

1 Swisscom uses various alternative performance measures. The definitions and the reconciliation to the values in accordance with IFRS Accounting Standards are set out on pages 22-24 of the Interim Report .

Totals in the tables included in this report may not add up due to rounding. Percentages and variances are calculated based on unrounded figures. The figures 0 and (0) indicate positive or negative amounts rounded to zero, while a dash (-) indicates zero.

3

Q1 2026

Interim Report 2026 January-March | KPIs segments

‌KPIs segments

Switzerland

1,937

1,962

(25)

-1.3%

Italy

1,596

1,717

(121)

-7.0%

Others

225

258

(33)

-12.8%

Elimination

(152)

(178)

26

-14.4%

Revenue

3,606

3,759

(153)

-4.1%

In CHF million Revenue Q1 2025 Change in % EBITDA after lease expense (EBITDAaL)

Switzerland

861

866

(5)

-0.6%

Italy

420

398

22

5.6%

Others

19

29

(11)

-37.0%

Elimination

(12)

(16)

4

-26.2%

EBITDAaL

1,288

1,277

10

0.8%

Capital expenditure

Switzerland

382

422

(40)

-9.4%

Italy

312

360

(48)

-13.4%

Others

9

10

(1)

-9.8%

Elimination

(10)

(12)

3

-22.3%

Capital expenditure

693

780

(86)

-11.0%

Operating free cash flow

Switzerland

478

444

34

7.7%

Italy

108

38

71

186.2%

Others

10

20

(10)

-50.2%

Elimination

(2)

(4)

2

-39.3%

Operating free cash flow

594

498

96

19.3%

4

‌Financial review Summary

Group revenue decreased by 4.1% to CHF 3,606 million. Operating income before depreciation and amortisation after lease expense (EBITDAaL) increased by 0.8% to CHF 1,288 million. The revenue and EBITDAaL development were influenced by the performance of the EUR exchange rate as a result of the substantial share attributable to the Italy segment. The EUR average exchange rate fell by 2.7% in the first quarter of 2026 compared to the same period of the previous year. This resulted in negative exchange differences on

revenue of CHF 44 million and on EBITDAaL of CHF 12 million. Based on a constant EUR exchange rate, revenue in the first quarter of 2026 decreased by 2.9% or CHF 109 million. Switzerland's revenue fell by 1.3% and Italy's by 4.5% (in EUR).

EBITDAaL development was influenced not only by currency effects, but also by non-recurring items in connection with the integration of Vodafone Italia and the reconciliation of pension cost (IAS 19).

Without these non-recurring items and with a constant EUR exchange rate, EBITDAaL increased by CHF 16 million (+1.3%). CHF 30 million (+7.4%) of this increase is attributable to the Italy segment. The EBITDAaL of Switzerland, on the other hand, remained fairly stable (-0.6%). Net income fell by CHF 35 million (-9.6%) to CHF 332 million. The decrease in net income is mainly due to non-cash effects within the financial result.

The Group's capital expenditure decreased by 11.0% to CHF 693 million. Capital expenditure for Switzerland fell by 9.4%, and by 11.0% in Italy (in EUR). In the first quarter of 2026, capital expenditure in Italy included EUR 32 million integration cost capital expenditure (prior year: EUR 3 million). Without non-recurring items and with a constant EUR exchange rate, the Group's capital expenditure decreased by 13.1% and in Italy by 17.9%. Operating free cash flow increased by CHF 96 million or 19.3% to CHF 594 million. Without the non-recurring items as mentioned and with a constant EUR exchange rate, operating free cash flow rose by 22.6%, mostly driven by the lower capital expenditure. Free cash flow of CHF 586 million was up year-on-year by CHF 115 million driven by the increase in the operating free cash flow.

The number of Swisscom employees decreased year-on-year by 643 FTEs or 2.7% to 23,073 FTEs. In the Switzerland segment, FTEs fell by 502 or 3.8% to 12,761 FTEs, and in the Italy segment by 35 FTEs or 0.5% to 7,185 FTEs. In the first quarter of 2026, the reduction of the number of Swisscom employees amounted to 0.8% or 192 FTEs (compared

to year-end 2025), of which 158 FTEs (-1.2%) resulted from the Switzerland segment. In the Italy segment, the number of employees remained stable (+0.1%) during that period. The decline in the Switzerland segment ist due to a decrease in FTEs in the areas of customer care, IT business and support functions.

The financial outlook for the 2026 financial year remains unchanged. Swisscom expects revenue between CHF 14.7 billion and CHF 14.9 billion, EBITDA after lease expense (EBITDAaL) between CHF 5.0 billion and CHF 5.1 billion, capital expenditures between CHF 3.0 billion and CHF 3.1 billion and an operating free cash flow of around CHF 2.0 billion. Subject to achieving its targets, Swisscom plans to propose an increase in dividend from CHF 26 to CHF 27 per share for the financial year 2026 at the 2027 Annual General Meeting.

5

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