Risking It All?
Better Call ↳Zal.
I’m Zal (rhymes with “Saul”), solo GP at Refactor. For over a decade, I’ve backed founders refactoring the real world: atoms, not bits.
I invest $1–2M in seed stage hard tech startups across the US. One investor managing $300M across five funds. If we work together, I want to be your first call.
Submit your pitch → it goes straight to my inbox.
A Refactor founder coined “Better Call Zal.” I try to earn it every day.
5
$50M
$1-2M
1
is building a large physics foundation model for the weather.
helps the world communicate science.
edits crop genomes and activates novel traits.
transforms kelp into chemicals.
unlocks a deeper understanding of your mind.
develops orally-inhaled therapeutics.
is a mental health company and was acquired by Modern Health.
is developing the pill for men.
built Locker Room and was acquired by Spotify ($SPOT).
is telehealth orthodontics and was acquired by Impress.
is building biodefense technologies.
manufactures chemicals using biology.
is the foundation model for the subsurface.
helps couples have healthy babies.
is automation tech and was acquired by $XMTR.
is a cryptocurrency exchange and went public ($COIN).
is robotics for data centers.
enriches isotopes for nuclear energy.
is bringing land back online.
is building novel products for cell and gene therapy.
develops off-the-shelf cancer therapies.
is bringing the chemical industry online.
is robotics for the grid.
is a modern employer health plan.
is modernizing revenue cycle operations for healthcare.
helped providers get paid and was acquired by $HCAT.
builds advanced spacecraft for sustained maneuver.
gives our best friends (our dogs) more time with us.
is the simplest, smartest backup home battery.
manufactures the most advanced electric powertrains.
is a senior care marketplace and was acquired by $IAC.
engineers yeast to do incredible things.
structures the world's medical data and makes it useful.
is modern emergency department software.
is advancing hormone-free IVF.
is fighting COVID and was acquired by $NRBO.
provides virtual surgery consults and was acquired by Mendaera.
is toxin removal for our bodies.
is developing therapeutics for the immune system.
is personalized therapies for rare disease.
uses living neurons to improve AI models.
uses AI and robotics to develop novel drugs.
helps reduce energy costs and emissions.
is advancing medicine with intelligent pathology.
is a CRM app and was acquired by People.AI.
is a global parametric flood insurance solution.
uses AI to build autoimmune therapeutics.
is building a virtual immune system.
is making safer drugs.
is a Medicare Advantage plan and went public ($CLOV).
creates specialized lipids for premium brands.
uses immune organoids to design drugs.
is a nicotine alternative company.
is software for aerospace and defense.
provides medication and support for quitting opioids.
builds and operates Micro GEO satellites.
was a crypto wallet and was acquired by FTX.
provides lifelong mental health support.
is AI inference infrastructure at the metro edge.
is a digital recovery program and was acquired by Monument.
is FDA compliance as a service and was acquired by $ROIV.
