CyberMaxx acquires Avertium

● PLATFORM | IT SERVICES · Managed Security Services (MSSP)

SEPTEMBER 16, 2026

CyberMaxx acquires Avertium (Sunstone)

TARGET

Managed cybersecurity and GRC services for mid-market and enterprise organizations, with deep Microsoft security stack expertise across Defender, Sentinel, Entra, Purview, Intune, and Copilot.

Ownership	PE-backed · Sunstone Partners (prior owner); Sunstone Partners
Headcount	214 FTEs
Headquarters	Knoxville, Tennessee
Leadership	Vicente Velez, Chief Executive Officer
Sell-side leads	Michael (Mike) Biggee, Co-Founder & Managing Partner (Sunstone Partners) Jeff Rich, Operating Partner (Sunstone Partners)
Sell-side advisor	—

ACQUIRER

CyberMaxx

Managed Detection and Response (MDR) provider serving mid-market organizations, pursuing a serial-acquisition consolidation strategy in managed security

Ownership	—
Headquarters	Linthicum Heights, Maryland
Leadership	Brian M. Ahern, chief executive officer
Buy-side advisor	—

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CyberMaxx -> Avertium  (2026-09-18)
consolidator_acquisition | IT Services | closed
Target: Managed cybersecurity and GRC services for mid-market and enterprise organizations, with deep Microsoft security stack expertise across Defender, Sentinel, Entra, Purview, Intune, and Copilot.
Website: avertium.com | Buyer site: cybermaxx.com
HQ: Knoxville, Tennessee | Ownership: pe-backed | Seller: Sunstone Partners
Advisors - not yet credited
Source: Thematic - https://thematichq.com/software/d/cybermaxx-avertium.html

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