United States · Series A startup

Who invested in BioSurplus

2 rounds we have observed, with the 2 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Biotech

Funding summaryUpdated 26 Oct 2026

$3.9Mraised across 2 rounds since 2012, from 2 sources

$1.5MVenture$2.4MSeries A
Latest round
Series A, $2.4MJul 2012
Step-upi
1.6×
Investors
2
See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2013
$1.5MVenture$2.4MSeries A
First round
Venture, $1.5M
May 2012
Biggest round
$2.4M
Series A · Jul 2012
Between rounds
2 months
from the last two

The rounds

  1. Jul 2012
    Series A$2.4M1 new1 returning

    Reported by finsmes.comSEC filing: $2.4M sold, first sale Mar 2012

  2. May 2012
    Venture$1.5M1 new

    Reported by masshightech.comSEC filing: $500K sold, first sale Mar 2012

Founders and team

From the SEC filings it signed: 2 on the team.

  • Kathleen D ScottExecutive Officer, Directori
  • Preston B Plumb VExecutive Officer, Directori

On the board, as filediDavid B GreistJay B Rembolt

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Venture2012Series A2012KI Investment HoldingsSJF Ventures

Everyone who backed them

SJF VenturesVC firm1round

Missing a round, or an investor who was in one? Tell us.

Quick answers about BioSurplus

Who invested in BioSurplus?

BioSurplus's investors include KI Investment Holdings and SJF Ventures.

How much has BioSurplus raised?

BioSurplus has raised $3.9M across 2 rounds since 2012.

When did BioSurplus last raise?

BioSurplus's most recent round was a Series A of $2.4M in Jul 2012.

What was BioSurplus's biggest round?

Its most recent round, $2.4M in Jul 2012, is also its largest on record.

Who backed BioSurplus first?

BioSurplus's first round on record, in May 2012, was backed by KI Investment Holdings.

What stage is BioSurplus at?

BioSurplus's latest named round is a Series A, in Jul 2012.

Where is BioSurplus based?

BioSurplus is based in the United States.

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