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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
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15 Jul 2026
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3 Nov 2026
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12 Feb 2027
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6 Feb 2026
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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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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

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Articles of Association

Auditors

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Certified advisor

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Accounting principles and standards

Accounting principles and standards

Accounting principles and standards

Information about First North

Information about First North

Information about First North

Share information
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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 (%)

Double Sunday IV AB*

136 657 667

271 692 425

82.0

92.8

Sebastian Siemiatkowski

4 259 329

-

0.9

2.4

Skogstornet AB

-

9 374 145

1.9

0.5

Avanza Pension

-

7 840 959

1.6

0.4

Musiara AB**

-

2 750 000

0.6

0.2

Iliakos AB

-

2 500 000

0.5

0.1

ABG Sundal Collier ASA

-

2 099 000

0.4

0.1

Nina Siemiatkowski

-

1 887 989

0.4

0.1

Karolina Tham Von Heidenstam

-

1 573 558

0.3

0.1

Nowo Global Fund

-

1 376 110

0.3

0.1

Handelsbanken Liv Försäkring AB

-

1 369 778

0.3

0.1

Nordnet Pensionsförsäkring AB

-

1 352 324

0.3

0.1

Total 10 largest owners

140 916 996

303 816 288

89.3

97.0

Other shareholders

-

53 108 837

10.7

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 (%)

Double Sunday IV AB*

136 657 667

271 692 425

82.0

92.8

Sebastian Siemiatkowski

4 259 329

-

0.9

2.4

Skogstornet AB

-

9 374 145

1.9

0.5

Avanza Pension

-

7 840 959

1.6

0.4

Musiara AB**

-

2 750 000

0.6

0.2

Iliakos AB

-

2 500 000

0.5

0.1

ABG Sundal Collier ASA

-

2 099 000

0.4

0.1

Nina Siemiatkowski

-

1 887 989

0.4

0.1

Karolina Tham Von Heidenstam

-

1 573 558

0.3

0.1

Nowo Global Fund

-

1 376 110

0.3

0.1

Handelsbanken Liv Försäkring AB

-

1 369 778

0.3

0.1

Nordnet Pensionsförsäkring AB

-

1 352 324

0.3

0.1

Total 10 largest owners

140 916 996

303 816 288

89.3

97.0

Other shareholders

-

53 108 837

10.7

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 (%)

Double Sunday IV AB*

136 657 667

271 692 425

82.0

92.8

Sebastian Siemiatkowski

4 259 329

-

0.9

2.4

Skogstornet AB

-

9 374 145

1.9

0.5

Avanza Pension

-

7 840 959

1.6

0.4

Musiara AB**

-

2 750 000

0.6

0.2

Iliakos AB

-

2 500 000

0.5

0.1

ABG Sundal Collier ASA

-

2 099 000

0.4

0.1

Nina Siemiatkowski

-

1 887 989

0.4

0.1

Karolina Tham Von Heidenstam

-

1 573 558

0.3

0.1

Nowo Global Fund

-

1 376 110

0.3

0.1

Handelsbanken Liv Försäkring AB

-

1 369 778

0.3

0.1

Nordnet Pensionsförsäkring AB

-

1 352 324

0.3

0.1

Total 10 largest owners

140 916 996

303 816 288

89.3

97.0

Other shareholders

-

53 108 837

10.7

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 73 622 38 71
ret@flatcapital.com

Antonio Melani

CFO

+46 789 50 57 21
am@flatcapital.com

Rickard El Tarzi

CEO

+46 73 622 38 71
ret@flatcapital.com

Antonio Melani

CFO

+46 789 50 57 21
am@flatcapital.com

Rickard El Tarzi

CEO

+46 73 622 38 71
ret@flatcapital.com

Antonio Melani

CFO

+46 789 50 57 21
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 73 511 17 35
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 73 511 17 35
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 73 511 17 35
hello@flatcapital.com


© 2026 Flat Capital AB. All rights reserved