Ossium Health Funding, Investors & Competitors

Ossium Health has raised $125M across 4 funding rounds, most recently a undisclosed-stage round in April 2026.

Last Ossium Health funding round

Undisclosed stage

Amount undisclosed · Apr 2026

Cumulative funding Ossium Health raised

$125M

across 4 funding rounds

Key investors in Ossium Health

  • Gaingels
  • First Round Capital
  • Vivo Capital
  • Manta Ray Ventures
  • Alumni Ventures
  • General Catalyst
  • Bossa Invest
  • Village Global

Ossium Health Overview

About Ossium Health

Ossium Health is a Denver-headquartered biotech firm operating a cryopreserved bone marrow bank. It supplies immune cells for blood cancer therapies, organ transplant tolerance, and radiation injury repair, partnering with US transplant centers.


Founded

2016

HQ

United StatesSan Francisco, CA

Status

Privately held

Customer focus

B2B

Revenue model

Product sales

Ossium Health Funding History

Ossium Health has raised a total of $125M across 4 funding rounds.

Ossium Health's first fundraising round was a $10M Series A in May 2018. The most recent completed round was a undisclosed-stage round in April 2026.

Ossium Health funding rounds

Ossium Health funding rounds
DateStageInvestorsRaisedDeal Summary
Apr 2026Undisclosed stageGaingels--
Jul 2023Series CAlumni Ventures (lead); CPMG (lead); Manta Ray Ventures; First Round Capital; Asahi Kasei; Wormhole Capital; Vivo Capital$52MOssium Health is a bioengineering company developing the world’s first bank of on-demand bone marrow, aiming to improve human health, vitality, and longevity. The company recovers viable vertebral bodies from deceased donors through partnerships with non-profit organ procurement organizations, processes them to yield bone marrow stem cells and orthopedic byproducts, cryopreserves them for indefinite storage, and makes them available on demand for treatments. This approach provides an alternative to traditional living donor stem cells, which can take months to match, enabling deployment within days for hematologic malignancies like blood cancers. On July 25, 2023, Ossium Health raised $52 million in a Series C funding round led by CPMG and Alumni Ventures, with participation from First Round Capital, Manta Ray Ventures, Vivo Capital, Asahi Kasei, and others including Spike Ventures, Congress Avenue Ventures, Nassau Street Ventures, AV’s Deep Tech Fund, and Total Access Fund. The funds will expand its proprietary bone marrow bank, advance clinical trials for blood and immune diseases, accelerate new product development, and support the launch of OssiGraft, an orthopedic product for musculoskeletal defect repair derived from the same vertebral bodies, slated for clinical entry in the second half of 2023. Ossium holds exclusive access to nearly half of U.S. deceased donor bone marrow and partners with BeTheMatch, the largest donor-matching platform. Its pipeline includes seven therapies, with the first potentially reaching market by 2024, and ongoing collaborations such as a Phase I intestinal transplant study at Columbia University Medical Center, plus research into kidney and liver transplants to reduce rejection risks. The company has unlocked recurring revenue streams from research grants and sales of stem cells and orthopedic byproducts to hospitals, co-founded by CEO Kevin Caldwell (ex-McKinsey biotech) and CSO Erik Woods (cryobiologist), backed by prominent VCs like General Catalyst from prior rounds.
Mar 2021Series BGeneral Catalyst (lead); Vivo Capital (lead); Manta Ray Ventures; XYZ Venture Capital; First Round Capital; Varsha Rao; Bossa Invest$63MOssium Health is a San Francisco-based biotech company founded in 2016 that develops stem cell therapies using a proprietary deceased donor bone marrow banking platform. The company focuses on treating patients with life-threatening blood and immune diseases, leveraging stem cell science to advance cell therapy products. In March 2021, Ossium Health completed a Series B funding round raising $63 million, led by General Catalyst and Vivo Capital, with participation from First Round Capital, Manta Ray Ventures, and other investors. The funding supported the company's clinical development and commercialization efforts for its cell therapy platform. As of 2023, the company had raised a total of approximately $126 million across multiple funding rounds, including a Series A in 2018 and a Series C in July 2023 for $52 million. By 2024, Ossium Health had secured government contracts, including a BARDA contract for advancing its bone marrow bank for radiological and nuclear emergency preparedness, demonstrating traction in both therapeutic development and government partnerships.
May 2018Series AVillage Global; Gaingels$10M-

Who has invested in Ossium Health?

13 investors have backed Ossium Health across its funding rounds, including Gaingels, First Round Capital, Vivo Capital, Manta Ray Ventures, Alumni Ventures and General Catalyst.

Lead investors include Alumni Ventures, CPMG, General Catalyst and Vivo Capital.


Ossium Health Investors

Investors in Ossium Health by funding rounds participated
InvestorHQRoundsRoleFirst check
Manta Ray VenturesUnited KingdomLondon2ParticipantMar 2021
First Round CapitalUnited StatesPhiladelphia, PA2ParticipantMar 2021
Vivo CapitalUnited StatesUnited States2LeadMar 2021
GaingelsUnited StatesNew York City, NY2ParticipantMay 2018
General CatalystUnited StatesSan Francisco, CA1LeadMar 2021
Village GlobalUnited StatesLos Angeles, CA1ParticipantMay 2018
XYZ Venture CapitalUnited StatesSan Francisco, CA1ParticipantMar 2021
Asahi KaseiJapanTokyo1ParticipantJul 2023
Wormhole CapitalUnited StatesNew York City, NY1ParticipantJul 2023
Varsha RaoUnited StatesSan Francisco, CA1ParticipantMar 2021
Alumni VenturesUnited StatesUnited States1LeadJul 2023

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Ossium Health Competitors

Ossium Health competitors include listed companies like Johnson & Johnson and Roche, and private ones like Biosplice Therapeutics, Biomat USA, ArsenalBio and BioRay Pharmaceuticals.

Public and private companies comparable to Ossium Health
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
Johnson & JohnsonUnited StatesUnited StatesPublicly listed$94B$40B$651B6.8x
RocheSwitzerlandSwitzerlandPublicly listed$77B$26B$351B4.9x
Biosplice TherapeuticsUnited StatesSan Diego, CAPrivate--$12B-
Biomat USAUnited StatesLos Angeles, CAPrivate--$4.2B-
ArsenalBioUnited StatesUnited StatesPrivate--$1.9B-
BioRay PharmaceuticalsChinaShanghaiPrivate$131M-$1.9B14.5x

Ossium Health Public Comps

Ossium Health is still privately-owned, but its public comps include Samsung, Eli Lilly, Johnson & Johnson, AbbVie, Merck, Roche, Novartis, AstraZeneca, Thermo Fisher Scientific and Siemens.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Samsung$243B$67B4.4x2.4x15.8x4.4x
Eli Lilly$65B$28B16.5x13.1x38.7x27.0x
Johnson & Johnson$94B$40B7.2x6.8x17.0x18.3x
AbbVie$61B$17B8.7x8.1x30.6x17.6x
Merck$65B$28B6.3x6.2x14.7x21.0x
Roche$77B$26B5.0x4.9x14.6x12.4x
Novartis$57B$22B5.5x5.5x14.2x13.3x
AstraZeneca$59B$19B4.8x4.5x14.6x12.7x

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Common questions about Ossium Health

When was Ossium Health founded?Ossium Health was founded in 2016.
Where is Ossium Health headquartered?Ossium Health is headquartered in San Francisco, CA, United States.
Is Ossium Health publicly listed?No, Ossium Health is a private, VC-backed company.
How much funding has Ossium Health raised?Ossium Health has raised $125M across 4 funding rounds.
What was Ossium Health's last funding round?Ossium Health's last funding round was a undisclosed-stage round in April 2026.
Who are Ossium Health's investors?Ossium Health's investors include Manta Ray Ventures, First Round Capital, Vivo Capital, Gaingels, General Catalyst, Village Global, XYZ Venture Capital, Asahi Kasei, Wormhole Capital, Varsha Rao and 3 others.
Which companies are comparable to Ossium Health?Companies comparable to Ossium Health include Johnson & Johnson, Roche, Biosplice Therapeutics, Biomat USA, ArsenalBio and BioRay Pharmaceuticals.

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