Risking It All?

Better Call Zal.


I’m Zal (rhymes with “Saul”), solo capitalist at Refactor. For over a decade, I’ve backed founders refactoring the real world.

I invest $1–2M in seed stage hard tech startups across the US. Refactor is a solo employee firm managing $300M across five funds. If we work together, I want to be your first call.

A Refactor founder coined “Better Call Zal.”

I try to earn it every day.
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5

Funds

$50M

Size

$1-2M

Checks

1

Employee
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Solugen
Critical Materials
Astranis
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Biorender
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Akasa
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Hexium
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Able Health
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Adventris
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ANA Therapeutics
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Berkeley Yeast
Critical Materials
Betty Labs
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Blockfolio
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Checkerspot
Critical Materials
Clover Health
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Coinbase
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Enzyme
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FactoryFour
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Granza Bio
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builds advanced spacecraft for sustained maneuver.

is a global parametric flood insurance solution.

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

is toxin removal for our bodies.

unlocks a deeper understanding of your mind.

transforms kelp into chemicals.

uses living neurons to improve AI models.

uses AI to build autoimmune therapeutics.

helps the world communicate science.

is a modern employer health plan.

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

is developing therapeutics for the immune system.

provides virtual surgery consults and was acquired by Mendaera.

helps couples have healthy babies.

uses immune organoids to design drugs.

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

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

is personalized therapies for rare disease.

is modernizing revenue cycle operations for healthcare.

is AI inference infrastructure at the metro edge.

provides lifelong mental health support.

is building a virtual immune system.

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

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

uses AI and robotics to develop novel drugs.

helps reduce energy costs and emissions.

edits crop genomes and activates novel traits.

is building a large physics foundation model for the weather.

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

is a digital recovery program and was acquired by Monument.

is developing the pill for men.

enriches isotopes for nuclear energy.

is advancing medicine with intelligent pathology.

creates specialized lipids for premium brands.

helped providers get paid and was acquired by $HCAT.

is a nicotine alternative company.

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

is bringing land back online.

builds and operates Micro GEO satellites.

is building biodefense technologies.

is automation tech and was acquired by $XMTR.

manufactures the most advanced electric powertrains.

develops off-the-shelf cancer therapies.

is bringing the chemical industry online.

is building novel products for cell and gene therapy.

provides medication and support for quitting opioids.

is telehealth orthodontics and was acquired by Impress.

is modern emergency department software.

is robotics for the grid.

develops orally-inhaled therapeutics.

is fighting COVID and was acquired by $NRBO.

is advancing hormone-free IVF.

is software for aerospace and defense.

is the simplest, smartest backup home battery.

manufactures chemicals using biology.

is making safer drugs.

is the foundation model for the subsurface.

was a crypto wallet and was acquired by FTX.

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

engineers yeast to do incredible things.

is robotics for data centers.

5

Funds

$50M

Size

$1-2M

Checks

1

Employee