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

Funds

$50M

Size

$1-2M

Checks

1

Employee
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Solugen
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is toxin removal for our bodies.

manufactures chemicals using biology.

helps the world communicate science.

is making safer drugs.

is developing therapeutics for the immune system.

is a mental health company and was acquired by Modern Health.

is software for aerospace and defense.

structures the world's medical data and makes it useful.

helped providers get paid and was acquired by $HCAT.

is fighting COVID and was acquired by $NRBO.

is FDA compliance as a service and was acquired by $ROIV.

uses AI and robotics to develop novel drugs.

helps couples have healthy babies.

is developing the pill for men.

is bringing the chemical industry online.

is personalized therapies for rare disease.

is a global parametric flood insurance solution.

is building novel products for cell and gene therapy.

develops off-the-shelf cancer therapies.

provides medication and support for quitting opioids.

gives our best friends (our dogs) more time with us.

is advancing medicine with intelligent pathology.

is robotics for data centers.

uses living neurons to improve AI models.

engineers yeast to do incredible things.

is building a large physics foundation model for the weather.

builds advanced spacecraft for sustained maneuver.

builds and operates Micro GEO satellites.

is bringing land back online.

is a CRM app and was acquired by People.AI.

develops orally-inhaled therapeutics.

provides virtual surgery consults and was acquired by Mendaera.

is a senior care marketplace and was acquired by $IAC.

manufactures the most advanced electric powertrains.

unlocks a deeper understanding of your mind.

edits crop genomes and activates novel traits.

is the simplest, smartest backup home battery.

is a Medicare Advantage plan and went public ($CLOV).

is building a virtual immune system.

helps reduce energy costs and emissions.

is modern emergency department software.

is modernizing revenue cycle operations for healthcare.

provides lifelong mental health support.

is a nicotine alternative company.

is the foundation model for the subsurface.

uses immune organoids to design drugs.

is advancing hormone-free IVF.

is a digital recovery program and was acquired by Monument.

built Locker Room and was acquired by Spotify ($SPOT).

is AI inference infrastructure at the metro edge.

is telehealth orthodontics and was acquired by Impress.

is a modern employer health plan.

enriches isotopes for nuclear energy.

transforms kelp into chemicals.

is automation tech and was acquired by $XMTR.

creates specialized lipids for premium brands.

is building biodefense technologies.

was a crypto wallet and was acquired by FTX.

is a cryptocurrency exchange and went public ($COIN).

is robotics for the grid.

uses AI to build autoimmune therapeutics.

5

Funds

$50M

Size

$1-2M

Checks

1

Employee