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RETRO BIOSCIENCES
Retro Biosciences
Biotechnology · United States · Founded · 2021 · ≈ · 50 · employees

Retro Biosciences Funding — Last Valued at $1.8B

Private

Retro Biosciences has raised $180M across 2 funding rounds. The latest round valued Retro Biosciences at $1.8B post-money, with 4P Capital on the lead line.

ProfileValuationFundingCompetitorsStock & IPOHow to invest
Retro Biosciences funding · at a glance
Total raised, all rounds
$180M
some round sizes not disclosed
Funding rounds
2
priced rounds
Latest round
$1.8B
post-money · May 2026
Lead on that event
4P Capital
lead investor
2026
About Retro Biosciences

Retro Biosciences raised a Series B led by 4P Capital that valued the company at $1.8 billion, with the longevity startup saying its latest fundraising confirmed that valuation.

Funding timeline

The Retro Biosciences funding timeline

2 funding rounds, the latest highlighted.

2021
Retro Biosciences founded

Retro Biosciences was founded in 2021, United States.

APR 2022
Seed

A primary round — the company sells new shares to investors it selects. $180M raised, led by Sam Altman.

Valuation basisAmount$180MPrice / shareLeadSam Altman
MAY 2026LATEST
Series B at $1.8B post-money

A primary round — the company sells new shares to investors it selects. Led by 4P Capital.

Valuation basispost-moneyAmountPrice / shareLead4P Capital
IPO: NOT ANNOUNCED

No filing has been made.

Funding rounds

Retro Biosciences funding rounds in full

2 dated rounds, newest first.

Round
Date
Amount
Valuation
Price / share
Lead investors
Participation
Series B LATEST
May 2026
—
$1.8Bpost-money
—
4P Capital
—
Seed
Apr 2022
$180M
—
—
Sam Altman
—
Retro Biosciences · investors

Investors

44P CapitalLEADSSam AltmanLEADStripe, Y Combinator

Frequently asked questions

What is Retro Biosciences's valuation?›

The last valuation is $1.8B.

Who has invested in Retro Biosciences?›

Lead investors for each round are in the funding timeline.

Who are Retro Biosciences's competitors?›

The closest biotechnology peers are on the competitors page.

How can I get exposure to Retro Biosciences?›

The routes section explains what is realistically available for a company at this stage.

Is Retro Biosciences publicly traded?›

No. Retro Biosciences is a private company; its shares do not trade on a public exchange.

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