Retro Biosciences Valuation, Funding & Investors

Retro Biosciences is valued at $1.8B as of May 2026.

Last Retro Biosciences valuation

$1.8B

Undisclosed stage · May 2026

Last Retro Biosciences funding round

Undisclosed stage

Amount undisclosed · May 2026

Cumulative funding Retro Biosciences raised

$180M

across 2 funding rounds

Key investors in Retro Biosciences

  • Sam Altman
  • 4P Capital

Retro Biosciences Overview

About Retro Biosciences

Retro Biosciences is a Redwood City-based biotechnology company pursuing therapies to extend healthy human lifespan by a decade through cellular reprogramming, autophagy enhancement, and plasma-derived interventions. The firm invests heavily in aging reversal research, including partial epigenetic reprogramming and senescent cell clearance. Retro collaborates with academic leaders and operates advanced labs to translate discoveries into clinical candidates targeting age-related diseases.


Founded

2021

HQ

United StatesSan Francisco, CA

Website

retro.bio

Status

Privately held

Customer focus

B2B

Revenue model

Product sales

Valuation

$1.8B (May 2026)

Retro Biosciences Valuation

Retro Biosciences is currently valued at $1.8B, based on its undisclosed-stage round in May 2026.

The round was led by 4P Capital.

Retro Biosciences valuation by funding round

Retro Biosciences valuation by funding round
DateStageValuation
May 2026Undisclosed stage$1.8B

Retro Biosciences Funding History

Retro Biosciences has raised a total of $180M across 2 funding rounds.

Retro Biosciences' first fundraising round was a $180M angel round in April 2022. The most recent completed round was a undisclosed-stage round in May 2026.

Retro Biosciences funding rounds

Retro Biosciences funding rounds
DateStageInvestorsRaisedValuationDeal Summary
May 2026Undisclosed stage4P Capital (lead)-$1.8BRetro Biosciences announced the initial close of its next financing round led by 4P Capital alongside other investors, at a **pre-money valuation of USD 1,800 million**. The company said the round was announced on May 22, 2026 and described it as an initial close of its next financing round, indicating the financing is not necessarily fully completed. The financing follows earlier reporting that Retro was seeking a much larger Series A-style raise, but the May 2026 announcement only confirms the initial close and valuation, not the full amount raised. The strategic rationale is tied to Retro’s aim of translating aging biology into a new generation of medicines, with investors backing the company’s lifespan-extension and therapeutics platform. Public reporting in early 2025 said Retro, backed by Sam Altman, was seeking $1 billion, and that Altman had previously funded its entire $180 million seed round. That context suggests continued investor confidence in Retro’s anti-aging drug development thesis and its position in the longevity biotech space. Retro Biosciences is a biotechnology company focused on aging and longevity therapeutics. Available funding references indicate it had raised USD 180 million across earlier rounds before this 2026 financing. No revenue or EBITDA figures were identified in the provided results.
Apr 2022AngelSam Altman (lead)$180M-Retro Biosciences is a San Francisco-based biotech startup focused on extending human lifespan by 10 years through drugs targeting aging-related diseases like Alzheimer’s, using approaches such as epigenetic editing, cell replacement therapies, and AI-enhanced models trained with OpenAI to reprogram cells into stem cells. The company’s $180 million angel (seed) round occurred on April 5, 2022, entirely funded by OpenAI CEO Sam Altman, marking his initial investment in the longevity space. CEO Joe Betts-LaCroix has emphasized rapid drug development within the 2020s. The company has since pursued larger raises, including a $1 billion Series A in 2025 with Altman’s participation and a potential $1 billion round at $5 billion valuation reported in late 2025, positioning it among major billionaire-backed longevity efforts like Altos Labs ($3 billion launch in 2022). Traction includes plans for clinical trials and AI integration. Retro Biosciences operates in a competitive longevity market with strong Silicon Valley interest, boasting a team of PhDs in Redwood City, California.

Who has invested in Retro Biosciences?

2 investors have backed Retro Biosciences across its funding rounds, including Sam Altman and 4P Capital.

Lead investors include 4P Capital and Sam Altman.


Retro Biosciences Investors

Investors in Retro Biosciences by funding rounds participated
InvestorHQRoundsRoleFirst check

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Retro Biosciences Competitors

Retro Biosciences competitors include listed companies like Nanjing King-Friend, Jafron Biomedical, Hanall Biopharma and Hugel, and private ones like Rakuten Medical and ArsenalBio.

Public and private companies comparable to Retro Biosciences
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
Nanjing King-FriendChinaChinaPublicly listed$595M$146M$1.8B2.7x
Jafron BiomedicalChinaChinaPublicly listed$300M$123M$1.8B5.2x
Hanall BiopharmaSouth KoreaSouth KoreaPublicly listed$113M($2M)$1.8B15.1x
HugelSouth KoreaSouth KoreaPublicly listed$309M$149M$1.8B4.0x
Rakuten MedicalUnited StatesSan Diego, CAPrivate--$1.7B-
ArsenalBioUnited StatesUnited StatesPrivate--$1.9B-

Retro Biosciences Public Comps

Retro Biosciences is still privately-owned, but its public comps include Nanjing King-Friend, Jafron Biomedical, Hanall Biopharma, Hugel, Xencor, Nanobiotix, Septerna, Cohance Lifesciences, Jiangxi Fushine Pharma and Vir Biotechnology.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Nanjing King-Friend$595M$146M2.8x2.7x11.4x12.1x
Jafron Biomedical$300M$123M5.4x5.2x13.2x11.2x
Hanall Biopharma$113M($2M)15.9x15.1x(899.3x)417.5x
Hugel$309M$149M4.6x4.0x9.5x8.6x
Xencor$126M($75M)12.3x11.2x(20.6x)(7.4x)
Nanobiotix$34M($15M)52.9x63.4x(121.3x)(97.5x)
Septerna$46M($67M)32.5x18.3x(22.3x)(20.9x)
Cohance Lifesciences$230M$44M7.7x7.4x40.0x39.1x

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Common questions about Retro Biosciences

When was Retro Biosciences founded?Retro Biosciences was founded in 2021.
Where is Retro Biosciences headquartered?Retro Biosciences is headquartered in San Francisco, CA, United States.
Is Retro Biosciences publicly listed?No, Retro Biosciences is a private, VC-backed company.
What is Retro Biosciences' valuation?Retro Biosciences was last valued at $1.8B in its undisclosed-stage round in May 2026.
How much funding has Retro Biosciences raised?Retro Biosciences has raised $180M across 2 funding rounds.
What was Retro Biosciences' last funding round?Retro Biosciences' last funding round was a undisclosed-stage round in May 2026, led by 4P Capital.
Who are Retro Biosciences' investors?Retro Biosciences' investors include Sam Altman and 4P Capital.
Which companies are comparable to Retro Biosciences?Companies comparable to Retro Biosciences include Nanjing King-Friend, Jafron Biomedical, Hanall Biopharma, Hugel, Rakuten Medical and ArsenalBio.

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