COS Systems acquires Fiber Flow

SEPTEMBER 8, 2026

COS Systems (Pivot) acquires Fiber Flow (Vinnergi)

TARGET

Open OSS/BSS platform automating order handling, provisioning, and operational workflows for Swedish municipal city fiber networks and ISPs.

Ownership	Software platform carved out of vinnergi (and subsidiary bitvis); vinnergi stays the nordic sales and implementation partner · Vinnergi (via Bitvis AB) (prior owner); Polaris Equity
Headcount	1-10 FTEs
Headquarters	Linköping, Sweden
Leadership	Pierre Wallgren, CEO (Vinnergi)
Sell-side advisor	—

ACQUIRER

COS Systems

End-to-end BSS/OSS software platform for fiber network operators, covering demand aggregation, subscriber management, billing, wholesale open access, and field service management

Ownership	PE-backed · Pivot Partners; Partnerinvest Norr, Ekström Invest, Ackra Invest
Capital raised	$2.35M
Headcount	34 FTEs
Headquarters	Umeå, Sweden
Leadership	Mikael Philipsson, CEO
Buy-side advisor	—

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COS Systems -> Fiber Flow  (2026-09-11)
strategic_acquisition | Other | announced
Target: Open OSS/BSS platform automating order handling, provisioning, and operational workflows for Swedish municipal city fiber networks and ISPs.
Website: bitvis.se | Buyer site: cossystems.com
HQ: Linköping, Sweden | Ownership: Software platform carved out of Vinnergi (and subsidiary Bitvis); Vinnergi stays the Nordic sales and implementation partner | Seller: Vinnergi (via Bitvis AB) | Buyer sponsor: Pivot Partners | Buyer ownership: pe-backed
Advisors - not yet credited
Source: Thematic - https://thematichq.com/software/d/cos-systems-fiber-flow.html

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