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Avalon BioVentures

11099 N Torrey Pines Rd Suite 290, La Jolla, CA, 92037, United States

Overview

Biotech venture capital firm.

Founded

2013

Deals · 12mo

0

Links

WebsiteLinkedIn

Stage focus

Seed
Series A

Geographic focus

United States

Sector focus

—

Investment portfolio

3rounds
NAMEDATESIZE
AeroRx Therapeutics
Oct 2025Led
$21 MSeries A
Valora Therapeutics
Nov 2024Led
$30 MSeed
Arialys Therapeutics
Sep 2023Participated
$58 MSeed
AeroRx Therapeutics
Oct 2025Led
$21 MSeries A
Valora Therapeutics
Nov 2024Led
$30 MSeed
Arialys Therapeutics
Sep 2023Participated
$58 MSeed
3
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Deal Distribution

Avalon BioVentures: 3 funding rounds are recorded in the selected participation categories.All available history.
Avalon BioVentures: 3 funding rounds are recorded in the selected participation categories. All available history
Round typeLed dealsParticipated deals
Seed11
Series A10

Monthly Deal Activity

Avalon BioVentures: 3 deals are recorded across 38 months.All available history.
Avalon BioVentures: 3 deals are recorded across 38 months. All available history
MonthDeals
Sep '231
Oct '230
Nov '230
Dec '230
Jan '240
Feb '240
Mar '240
Apr '240
May '240
Jun '240
Jul '240
Aug '240
Sep '240
Oct '240
Nov '241
Dec '240
Jan '250
Feb '250
Mar '250
Apr '250
May '250
Jun '250
Jul '250
Aug '250
Sep '250
Oct '251
Nov '250
Dec '250
Jan '260
Feb '260
Mar '260
Apr '260
May '260
Jun '260
Jul '260
Aug '260
Sep '260
Oct '260

Sector Breakdown

Avalon BioVentures: Health & Life Sciences is the largest displayed sector by deal count (3 deals).All available history.

A deal can appear in multiple sectors, so sector totals may overlap. Capital represents disclosed total round sizes, not fund cheque sizes.

Avalon BioVentures: Health & Life Sciences is the largest displayed sector by deal count (3 deals). All available history
SectorDeals
Health & Life Sciences3

Deal Size Distribution

Avalon BioVentures: 3 rounds have a disclosed size in the displayed size bands.All available history.

Undisclosed round sizes are excluded. Capital represents total round sizes, not fund cheque sizes.

Avalon BioVentures: 3 rounds have a disclosed size in the displayed size bands. All available history
Round size band (USD)Deals
<$5M0
$5M-$10M0
$10M-$25M1
$25M-$50M1
$50M-$100M1
$100M-$250M0
$250M-$500M0
$500M-$1B0
$1B+0

Deals By Geography

Avalon BioVentures: United States has the largest recorded deal count among the displayed regions (3 deals).All available history.

Top 1 of 1 regions; European countries are grouped as Europe.

Avalon BioVentures: United States has the largest recorded deal count among the displayed regions (3 deals). All available history
RegionDeals
United States3
Avalon BioVentures: 7 co-investors are shown, with Alexandria Venture Investments sharing 3 recorded deals.All available history.

Co-Investors

Bubble size = shared deals

Click a bubble to open that fund in a new tab.

Shows up to 20 co-investors ranked by shared deals. Deals may be shared with multiple funds, so rows overlap. Capital is total round size, not fund cheque size.

Avalon BioVentures: 7 co-investors are shown, with Alexandria Venture Investments sharing 3 recorded deals. All available history
Co-investorShared deals
Alexandria Venture Investments3
Correlation Ventures2
Bregua Corporation1
Catalys Pacific1
Johnson & Johnson Innovation1
MPM Capital1
Tiger Gene1

Investment Strategy

Avalon BioVentures: Led accounts for 67% and participating for 33% of round participation.All available history.
Avalon BioVentures: Led accounts for 67% and participating for 33% of round participation. All available history
CategoryDeals (count)Share (%)
Led267%
Participating133%
Avalon BioVentures: Single-lead accounts for 50% and co-led for 50% of lead dynamics.All available history.
Avalon BioVentures: Single-lead accounts for 50% and co-led for 50% of lead dynamics. All available history
CategoryDeals (count)Share (%)
Single-lead150%
Co-led150%

Team

Sanford J. Madigan

Managing Partner

Sergio Duron

Managing Partner