Until

Pressing pause on biological time, for those who need it most.

[Until @untillabs]

We’ve raised $100M+ to date, we are developing reversible cryopreservation for patients in need of donor organs, and we are hiring 🫀🎉🚀

[Until @untillabs]

careers here: https://t.co/zJeaDw5oTS

[Until @untillabs]

"Everyone who works at Until has a fundamental belief that a small group of people can have an outsized effect on the world."

Take a moment to hear from our CSO and Co-Founder @huntercoledavis about what it's like to work at Until and check out the link below for our open positions.

[Until @untillabs]

We're excited to welcome Neal Beswick to our team!

At Until, our scientific goal is to demonstrate reversible cryopreservation at clinically relevant scales. Equally important is building the path from the laboratory to the clinic. That means working with transplant centers, health systems, regulators, payers, and industry partners to bring an entirely new capability into clinical practice. Neal joins Until as Vice President of Commercial & GTM to lead that effort.

Neal has spent nearly two decades helping pioneering organ preservation technologies find their way into transplant centers around the world. We're honored to have him join.

[Laura 🌲 ⛰️ @LauraDeming]

this is (to our knowledge) the largest cryo chemical campaign ever run!

we’ve physically screened over 7,000 new chemical entities, most of which were not previously associated with cryopreservation

last quarter, we did 2,943 formulation runs for biocompatibility, across a diverse panel of cell types

Come build the future with us 🙂

[Until @untillabs]

And of course, this is all the work of our amazing Applied Physics and Molecular Development teams. Here’s our high-throughput screening sub-team. They're just getting started 💫 💛

[Until @untillabs]

We’re making progress on one of cryobiology's biggest challenges: finding biocompatible cryoprotectants.

Our latest blog post dives into how we built our cryoprotectant discovery engine that scaled up the search from a few dozen candidate molecules to over 250,000, and is already producing hits.

[Until @untillabs]

By the end of 2026 we expect to screen 2,000+ components and 10,000+ formulations.

Read the full post here: https://t.co/lxrLG6rYvO

[Until @untillabs]

Check out our open positions here: https://t.co/zJeaDw5oTS

[Until @untillabs]

Part two of our look inside Until Labs 👀

This time, meet Arash, our Head of Molecular Development. He and his team are on the search for Goldilocks Cryoprotectants that perfectly balance ice suppression, permeability, and biocompatibility.

Want to join the search? We're hiring 👇

[Until @untillabs]

We're excited to Welcome Jaya Tiwari to our team as SVP of Regulatory, Quality & Clinical Affairs✨

Transformative medical technologies only change lives when they can safely reach patients. That means navigating clinical trials, regulatory pathways, and quality systems with the same rigor used to develop the underlying science.

Jaya has spent her career doing exactly that. After nearly two decades leading clinical research, regulatory affairs, and global medical programs in transplantation, she joins Until to help bring reversible cryopreservation into clinical practice.

We're thrilled to welcome Jaya to the next frontier of transplantation: reversible cryopreservation, making time a tool in medicine.

[Until @untillabs]

See our open positions here: https://t.co/zJeaDw5oTS

[Until @untillabs]

What does a day building the future of organ transplantation actually look like?👀

Spend a minute inside Until Labs with Isla, our Director of Preclinical Research.

If you want to help scale reversible cryopreservation, we're hiring! (link below👇)

[Until @untillabs]

We've started hosting monthly community dinners at Until!🥳

We’re hoping to create a community of likeminded thinkers who swing by the office once a month for food and a chance to chat with the company.

If you're interested in joining a future dinner at our office, reach out to someone on the Until team, share something cool you’ve built, we'd love to meet you.

[Until @untillabs]

At Until Labs, interdisciplinary isn’t just a hype word.

Here you’ll find our CNC machine, molecular biology lab, organ perfusion station, and power-electronics dry lab all under one roof.

Learn more about what we’re building: https://t.co/8a340cusCM

[Until @untillabs]

Need a part? We’ll make it ourselves. 🛠️


Come build with us, we’re hiring engineers, see our open positions below. ⬇️

https://t.co/zJeaDw5oTS

[Until @untillabs]

The central challenge of cryopreservation was never just preservation, it’s also safely coming back. Until Mark 1 shows organ-scale rewarming no longer needs industrial power budgets. A real step toward cryopreservation in transplant centers.

Full writeup: https://t.co/DnKG9VRVak

5/5🧵

[Until @untillabs]

Did you catch our latest blog post on our rewarming machine? 👀


With our magnet, a kidney can successfully traverse the danger zone of ice formation in under a minute, using only a few kilowatts. That means it can operate off of standard hospital outlets⚡️

All of our devices are designed with the patient and care team in mind. 
Check out the writeup!

1/5🧵

[Until @untillabs]

There's some serious rocket-launch-control-room energy in the lab when we rewarm an organ 🤩🚀

4/5🧵