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6 Feb 2026
Interim report Q4 '25
26 Feb 2026
Annual report FY '25
19 Mar 2026
Annual General Meeting '26
24 Apr 2026
Interim report Q1 '26
15 Jul 2026
Interim report Q2 '26
3 Nov 2026
Interim report Q3 '26
12 Feb 2027
Interim report Q4 '26
6 Feb 2026
Interim report Q4 '25
26 Feb 2026
Annual report FY '25
19 Mar 2026
Annual General Meeting '26
24 Apr 2026
Interim report Q1 '26
15 Jul 2026
Interim report Q2 '26
3 Nov 2026
Interim report Q3 '26
12 Feb 2027
Interim report Q4 '26
6 Feb 2026
Interim report Q4 '25
26 Feb 2026
Annual report FY '25
19 Mar 2026
Annual General Meeting '26
24 Apr 2026
Interim report Q1 '26
15 Jul 2026
Interim report Q2 '26
3 Nov 2026
Interim report Q3 '26
12 Feb 2027
Interim report Q4 '26
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2026

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Board and management

Board and management

Board and management

Sebastian Siemiatkowski

Chairman of the Board

Amaury de Poret

Executive board member

Charlotte Runius

Board member

Dr. Marcelo Carvalho de Andrade

Board member

Johan Söör

Board member

Rickard El Tarzi

CEO

Antonio Melani

CFO

Nomination committee

Nomination committee

Nomination committee

Remuneration

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Remuneration

Articles of Association

Articles of Association

Articles of Association

Auditors

Auditors

Auditors

Accounting principles and standards

Accounting principles and standards

Accounting principles and standards

Information about Nasdaq Stockholm

Information about Nasdaq Stockholm

Information about Nasdaq Stockholm

Share information
Share information
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Share information
Share information
Share information
Share information
Share information
Share information

The share

Ticker:

FLAT B

ISIN code:

SE0016609846

The share

Ticker:

FLAT B

ISIN code:

SE0016609846

The share

Ticker:

FLAT B

ISIN code:

SE0016609846

Shareholders
Shareholders
Shareholders
Shareholders
Shareholders
Shareholders
Shareholders
Shareholders
Shareholders
Shareholders
Shareholders
Shareholders

Shareholder

# of A-shares

# of B-shares

Capital (%)

Votes (%)

Verified

Sebastian Siemiatkowski, including companies*

140 916 996

271 692 425

82.9

95.2

Skogstornet AB

-

9 600 848

1.9

0.5

Avanza Pension

-

7 909 139

1.6

0.4

Nina Siemiatkowski, including companies**

-

4 637 989

0.9

0.3

Iliakos AB

-

2 500 000

0.5

0.1

ABG Sundal Collier ASA

-

2 099 000

0.4

0.1

Karolina Tham Von Heidenstam

-

1 573 558

0.3

0.1

Handelsbanken Liv Försäkring Aktiebolag

-

1 367 527

0.3

0.1

Nowo Global Fund

-

1 283 356

0.3

0.1

Nordnet Pensionsförsäkring

-

1 250 607

0.3

0.1

Total 10 largest owners

140 916 996

303 914 449

89.4

97.0

Other shareholders

-

53 010 676

10.6

3.0

Grand total

140 916 996

356 925 125

100.0

100.0

* Double Sunday IV AB is 100% owned by Sebastian Siemiatkowski.

** Musiara AB is 100% owned by Nina Siemiatkowski.

Shareholder

# of A-shares

# of B-shares

Capital (%)

Votes (%)

Verified

Sebastian Siemiatkowski, including companies*

140 916 996

271 692 425

82.9

95.2

Skogstornet AB

-

9 600 848

1.9

0.5

Avanza Pension

-

7 909 139

1.6

0.4

Nina Siemiatkowski, including companies**

-

4 637 989

0.9

0.3

Iliakos AB

-

2 500 000

0.5

0.1

ABG Sundal Collier ASA

-

2 099 000

0.4

0.1

Karolina Tham Von Heidenstam

-

1 573 558

0.3

0.1

Handelsbanken Liv Försäkring Aktiebolag

-

1 367 527

0.3

0.1

Nowo Global Fund

-

1 283 356

0.3

0.1

Nordnet Pensionsförsäkring

-

1 250 607

0.3

0.1

Total 10 largest owners

140 916 996

303 914 449

89.4

97.0

Other shareholders

-

53 010 676

10.6

3.0

Grand total

140 916 996

356 925 125

100.0

100.0

* Double Sunday IV AB is 100% owned by Sebastian Siemiatkowski.

** Musiara AB is 100% owned by Nina Siemiatkowski.

Shareholder

# of A-shares

# of B-shares

Capital (%)

Votes (%)

Verified

Sebastian Siemiatkowski, including companies*

140 916 996

271 692 425

82.9

95.2

Skogstornet AB

-

9 600 848

1.9

0.5

Avanza Pension

-

7 909 139

1.6

0.4

Nina Siemiatkowski, including companies**

-

4 637 989

0.9

0.3

Iliakos AB

-

2 500 000

0.5

0.1

ABG Sundal Collier ASA

-

2 099 000

0.4

0.1

Karolina Tham Von Heidenstam

-

1 573 558

0.3

0.1

Handelsbanken Liv Försäkring Aktiebolag

-

1 367 527

0.3

0.1

Nowo Global Fund

-

1 283 356

0.3

0.1

Nordnet Pensionsförsäkring

-

1 250 607

0.3

0.1

Total 10 largest owners

140 916 996

303 914 449

89.4

97.0

Other shareholders

-

53 010 676

10.6

3.0

Grand total

140 916 996

356 925 125

100.0

100.0

* Double Sunday IV AB is 100% owned by Sebastian Siemiatkowski.

** Musiara AB is 100% owned by Nina Siemiatkowski.

Get in touch
Get in touch
Get in touch
Get in touch
Get in touch
Get in touch
Get in touch
Get in touch
Get in touch
Get in touch
Get in touch
Get in touch

Rickard El Tarzi

CEO

+46 736-22 38 71
ret@flatcapital.com

Antonio Melani

CFO

+46 72-221 81 32
am@flatcapital.com

Rickard El Tarzi

CEO

+46 736-22 38 71
ret@flatcapital.com

Antonio Melani

CFO

+46 72-221 81 32
am@flatcapital.com

Rickard El Tarzi

CEO

+46 736-22 38 71
ret@flatcapital.com

Antonio Melani

CFO

+46 72-221 81 32
am@flatcapital.com

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Visiting address

Flat Capital AB
Norrlandsgatan 10, c/o Cecil Coworking AB
111 43 Stockholm

Flat Capital AB (publ)
556941–0110


Contact us

+46 736-22 38 71
hello@flatcapital.com


© 2026 Flat Capital AB. All rights reserved

Visiting address

Flat Capital AB
Norrlandsgatan 10, c/o Cecil Coworking AB
111 43 Stockholm

Flat Capital AB (publ)
556941–0110


Contact us

+46 736-22 38 71
hello@flatcapital.com


© 2026 Flat Capital AB. All rights reserved

Visiting address

Flat Capital AB
Norrlandsgatan 10, c/o Cecil Coworking AB
111 43 Stockholm

Flat Capital AB (publ)
556941–0110


Contact us

+46 736-22 38 71
hello@flatcapital.com


© 2026 Flat Capital AB. All rights reserved