C3 Metrics® is an independent attribution platform built for brands where measurement has to hold up — to finance, to audit, to the C-suite. Most attribution tells you what happened. Ground Signal™ verifies it. Every data source is confirmed, every gap is flagged, and every reconciliation decision is documented in the Signal Manifest™ — a structured, auditable record delivered with every measurement cycle. C3 Metrics® has no agency relationships and no channel affiliations. The number is the number.
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C3 Metrics Questions
The C3 Metrics annual revenue was $11 million in 2026.
Greg Collins is the CEO of C3 Metrics.
18 people are employed at C3 Metrics.
C3 Metrics is based in Portsmouth, New Hampshire.
The NAICS codes for C3 Metrics are [541, 54, 54161, 541613, 5416, 541513, 54151, 5415].
The SIC codes for C3 Metrics are [737, 7374, 73].
Top C3 Metrics Employees
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Greg Collins
Chief Executive Officer at C3 Metrics
Portsmouth, NH, US42 -
Giorgio san Campo
Chief Operating Officer at C3 Metrics
Chicago, IL, US24 -
Earl Galleher
Advisory Board Member at C3 Metrics
Washington, DC, US15+ -
Buzby Cook
Executive Solutions Director at C3 Metrics
Boston, MA, US13 -
Ellie Corbelle
Head of Accelerate at C3 Metrics
Boston, MA, US1 -
35+
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Giorgio Campo
Chief Operating Officer at C3 Metrics
Chicago, IL, US -
Brian Theriault
Executive Solution Specialist at C3 Metrics
Boston, MA, US12 -
Chuck Boston
VP, Client Support at C3 Metrics
Portsmouth, NH, US24 -
Aaron Mitchell
Senior Account Manager Team Lead at C3 Metrics
Manchester, NH, US23
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