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Kastor Capital

Kastor Capital

Boston, Massachusettskastorcapital.com

Overview

Kastor Capital is a boutique venture capital firm based in Boston that invests in early-stage, preclinical therapeutic and life science innovation startups.

Year Founded

2024

Portfolio Companies

1

Investments

Kastor Capital investments
CompanyDateStageLead
Absentia LabsOct 2025SeedCo-investor

Sector & Stage Mix

Industry, funding stage, and valuation band breakdowns.

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SeedSeries ASeries BGrowth

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Investment Activity

Yearly cadence, pace, and funding raised over time.

Premium
2021
2022
2023
2024
2025
2026

Portfolio analytics

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FAQ

Where is Kastor Capital based?

Kastor Capital is headquartered in Boston, Massachusetts, United States.

When was Kastor Capital founded?

Kastor Capital was founded in 2024.

How many portfolio companies does Kastor Capital have?

Kastor Capital has 1 portfolio company in Caplight's dataset.

What are some companies in Kastor Capital's portfolio?

Recent investments visible on Caplight include Absentia Labs.

What was Kastor Capital's most recent investment?

Kastor Capital's most recent investment on Caplight was in Absentia Labs in 2025.

What sectors does Kastor Capital focus on?

Kastor Capital focuses on Healthcare & Life Sciences, AI, Data & Cloud Infrastructure.

What company stages does Kastor Capital focus on?

Stage focus information for Kastor Capital is not publicly available.

Firmographic Details

HeadquartersBoston, Massachusetts
Year Founded2024

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