Investors
3 investorsAll
Early stage
Mid stage
Late stage
Investor geography1 country
Investor activity2025–2026 · investors recorded per year
Recent (last 2y)Earlier
Frequently asked questions
Who invested in Callosum?
Callosum has 3 investors on record on gritt.io, including 3 early-stage backers.
When did Callosum last raise funding?
The most recent investment in Callosum recorded on gritt.io was in February 2026.
When was Callosum founded?
Callosum was founded in 2025.
What industry is Callosum in?
Callosum operates in Research Services. Find similar Research Services investors on gritt.io.
Where is Callosum based?
Callosum is headquartered in London, United Kingdom.