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K31 Bygg AB
AB
Active
Org 5592809858
Ringvägen 120
Joinery installation · NACE 4332
Est. 2020
1 employees
Watchlist
Share
Overview
Financials
People & ownership
Related companies
Revenue 2025
SEK 886K
-19% vs 2024
EBITDA margin
10.2%
+981% vs 2024
Equity ratio
17.9%
Financial strength
Net profit 2025
SEK 24K
+158% vs 2024
EBITDA — year on year
SEK millions
0M
-0M
-1M
-1M
-1M
0M
2021
0M
0%
2022
0M
0%
2023
0M
0%
2024
0M
0%
2025
Key figures
Annual report 2025
Revenue
SEK 886K
-19%
EBITDA
SEK 91K
+981%
Net profit
SEK 24K
+158%
Total assets
SEK 339K
+34%
Equity
SEK 61K
+67%
Employees
1
—
Company information
Legal name
K31 Bygg AB
Org number
5592809858
Legal form
Aktiebolag
NACE code
4332 · Joinery installation
Founded
4 november 2020
Share capital
SEK 25 000
Employees
1 (FTE)
VAT registered
Yes
Audit selected
No
Last report
2025-12-31
Financial year
January – December
Signatory rights
Firman tecknas av styrelsen
Company purpose
Bygg, snickeriarbeten.
Contact
Address
Ringvägen 120
Email
ekrooth@hotmail.com
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Companies in Joinery installation
Companies in Haninge
All Sweden companies
Revenue
SEK millions
0M
1M
1M
2M
2M
1M
2021
1M
2022
2M
2023
1M
2024
1M
2025
EBITDA
SEK millions
0M
0M
1M
1M
1M
0M
2021
0M
2022
0M
2023
0M
2024
0M
2025
Income statement
SEK thousands
Item
2021
2022
2023
2024
2025
Revenue
1 157
1 104
1 503
1 099
886
Staff expenses
—
−577
−610
−600
−503
EBITDA
76
24
63
8
91
Depreciation & amort.
−18
−28
−3
−38
−52
EBIT
58
−4
60
−29
39
Net financials
−3
−6
0
−12
−15
Profit before tax
55
−10
60
−42
24
Tax
−13
—
−15
—
—
Net profit
42
−10
45
−42
24
Balance sheet
SEK thousands
Item
2021
2022
2023
2024
2025
Total assets
106
254
209
253
339
Equity
67
58
103
37
61
Long-term debt
0
152
0
151
211
Short-term debt
39
44
106
66
67
Total debt
39
197
106
217
278
Financial ratios
5-year trend
EBITDA margin
10.2%
This company
15.8%
Market median
-35% vs market
2021
2025
Equity ratio
17.9%
This company
38.2%
Market median
-53% vs market
2021
2025
Return on equity
40.0%
This company
18.4%
Market median
+117% vs market
2021
2025
Net profit margin
2.7%
This company
8.1%
Market median
-67% vs market
2021
2025
Asset turnover
2.61×
This company
1.12×
Market median
+133% vs market
2021
2025
Debt / equity
4.57×
This company
0.62×
Market median
-637% vs market
2021
2025
Annual reports & filings
Annual report 2025
Filed via Bolagsverket / SCB · Period 2025-01-01 – 2025-12-31
View
PDF
Annual report 2024
Filed via Bolagsverket / SCB · Period 2024-01-01 – 2024-12-31
View
PDF
Annual report 2023
Filed via Bolagsverket / SCB · Period 2023-01-01 – 2023-12-31
View
PDF
Annual report 2022
Filed via Bolagsverket / SCB · Period 2022-01-01 – 2022-12-31
View
PDF
Annual report 2021
Filed via Bolagsverket / SCB · Period 2020-11-01 – 2021-12-31
View
PDF
Management
Actively employed in the business
No data on file.
Board of directors
Non-executive oversight
Name
Role
Member since
Current (2)
DJ
Dan Joel Simon Ekroth
Deputy Board Member
2022
DK
Dan Kalle Linus Ekroth
Board of Directors
2022
Shareholders
As of last annual report
No shareholder data available.
Beneficial ownership (UBO) data access is restricted in Denmark as of September 2025 per the EU 6th AML Directive.
Learn more
.
Company hierarchy
No registered parent or subsidiaries
Board network connections
Board members of K31 Bygg AB also hold positions in
0
other companies.
Person
Role here
Other companies
Dan Joel Simon Ekroth
Deputy Board Member
0 companies
Dan Kalle Linus Ekroth
Board of Directors
0 companies