Ossium Health

07/28/2026

We're honored to be named to the Forbes Next Billion-Dollar Startups list, Forbes' annual selection of 20 fast-growing U.S. companies it considers most likely to reach a $1 billion valuation.

Ten years ago, co-founders Kevin Caldwell and Erik Woods set out to prove that bone marrow from organ donors could be recovered, cryopreserved, and made available to patients on demand. Today, 28 patients have received transplants with bone marrow from Ossium’s bank.

This recognition belongs to our team, our clinical partners, and the donor families whose gift makes every one of these transplants possible.

The Forbes Next Billion-Dollar Startups 2026 list highlights venture-backed companies likely to become unicorns. Learn more about these fast-growing startups.

06/18/2026

06/17/2026

When time was running out for 14-year-old Noah Britt, speed made all the difference. He's now the first pediatric patient to be treated with a bone marrow transplant using organ donor stem cells from Ossium's bank.

After a courageous fight with acute myeloid leukemia, Noah's initial living donor bone marrow transplant failed. With his condition worsening and time running short, his care team at Riley Children's Health needed another donor, fast. They identified a suitable donor in Ossium's bank, where stem cell units are available on demand. Because the cells were ready when Noah needed them, his physicians were able to move forward in days rather than months, a critical difference that gave him another chance at life.

At Ossium, we measure success in lives saved. Stories like Noah's are exactly why we built this bank, and why we keep working to expand access for the patients who need it most.

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Leukemia patient is the first child in the world to successfully undergo a stem cell transplant using cells from a deceased donor.

05/28/2026

When longevity medicine arrives at scale, it will depend as much on logistics as on biology. That's the throughline of a new Longevity.Technology feature on Ossium and a conversation with our Co-Founder & CEO Kevin Caldwell.

Bone marrow transplantation has been quietly extraordinary for decades: a procedure that rebuilds a patient's entire blood and immune system from donor-derived stem cells. But it has remained dependent on living donors, narrow collection windows, and choreography that often breaks when disease moves faster than the donor coordination.

Ossium is building the alternative: a cryopreserved bank of organ donor-derived bone marrow, processed and characterized for on-demand use.

The near-term goal is access. The longer-term implication, as the piece explores, is harder to ignore: if hematopoietic stem cells sit at the root of immune decline, the infrastructure for transplantation may also be infrastructure for immune renewal.

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As immunosenescence drives systemic disease, banked bone marrow could scale from a transplant tool into healthspan infrastructure.

05/26/2026

Ossium Health CEO Kevin Caldwell recently joined Chris Leidli on for a conversation about how we're reshaping the future of bone marrow transplantation and immune health.

The episode covers:
🔹 Why bone marrow transplants – one of the most powerful procedures in medicine — have been historically underutilized
🔹 How Ossium’s supply of banked bone marrow has reduced transplant lead times from months to as little as 48 hours
🔹 The potential for our bone marrow bank to serve as a foundation for a new generation of allogeneic, off-the-shelf cell therapies
🔹 How bone marrow transplants could eventually be used proactively to reset an aging immune system before catastrophic disease strikes

🎧 Listen here:

Podcast Episode · Rx for Biotech · April 28 · 29m

05/08/2026

Congratulations to the team at UAB O'Neal Cancer Center for performing Alabama’s first transplant with organ donor bone marrow sourced from Ossium’s bank. This is a major step forward for patients across the state who need a transplant urgently, as access to on-demand organ donor marrow can mean the difference between receiving life-saving treatment and missing the window entirely.

In the words of UAB’s Dr. Omer Jamy: "This advancement reflects our commitment to ensuring more patients have access to curative therapies when they need them most."

🔗 Read more:

UAB physician performs Alabama’s first deceased donor bone marrow transplant

04/28/2026

The Indianapolis Business Journal spent time with our team this month and the result is a great read covering everything from how we source and bank marrow to what it means for patients who have run out of other options.

Dr. Jodi Skiles at Riley Hospital for Children sums it up well: "Having an option like Ossium really has the potential to be a major game-changer for our patient population."

🔗https://www.ibj.com/articles/ossium-health-aims-to-revolutionize-role-of-bone-marrow-banks

04/08/2026

04/08/2026

Ossium Health, a bone marrow bank co-founded by Kevin Caldwell and Erik Woods, is aiming to make bone marrow transplants more accessible. Caldwell says Indiana is well-positioned to become the epicenter of the biosciences revolution due to its long history of advanced research and pharmaceutical manufacturing. https://tinyurl.com/24wtncyj