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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Companies
Solugen
Critical Materials
Astranis
Aerospace
Biorender
Health
Curative
Health
PathAI
Health
Akasa
Health
Hexium
Energy
Brelle
Energy
Epana Bio
Immune
Causal Labs
Earth Systems
TBC
AI Infra
General Galactic
Aerospace
Inferra
AI Infra
Lucy
Exits
Pilgrim
Applied Bio
64-X Bio
Applied Bio
Able Health
Exits
Adventris
Applied Bio
ANA Therapeutics
Exits
Atlas
Health
Avail
Exits
Berkeley Yeast
Critical Materials
Betty Labs
Exits
Blockfolio
Exits
Checkerspot
Critical Materials
Clover Health
Exits
Coinbase
Exits
Enzyme
Exits
FactoryFour
Exits
Floodbase
Earth Systems
Granza Bio
Immune
Headspace
Health
Hero
Exits
Kip
Exits
Knowde
Critical Materials
Loyal
Applied Bio
Macro Oceans
Critical Materials
Miist
Applied Bio
Octant
Applied Bio
Onyx Bio
Immune
Ophelia
Health
Orchid Health
Fertility
Parallel Bio
Immune
Phytoform
Applied Bio
Picnic Health
Health
Pila Energy
Energy
Remedy Scientific
Earth Systems
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Stealth
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Stealth D
Stealth
Stealth E
Stealth
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Stealth
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Tempest
Exits
Thalo Labs
Earth Systems
Umbrella
Exits
Uniform Teeth
Exits
Vital Health
Health
Vitra Labs
Fertility
YourChoice
Fertility

is building a virtual immune system.

is personalized therapies for rare disease.

is AI inference infrastructure at the metro edge.

is telehealth orthodontics and was acquired by Impress.

is developing therapeutics for the immune system.

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

is modern emergency department software.

helps couples have healthy babies.

is bringing the chemical industry online.

transforms kelp into chemicals.

is automation tech and was acquired by $XMTR.

manufactures chemicals using biology.

enriches isotopes for nuclear energy.

is fighting COVID and was acquired by $NRBO.

is bringing land back online.

provides lifelong mental health support.

edits crop genomes and activates novel traits.

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

was a crypto wallet and was acquired by FTX.

is software for aerospace and defense.

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

uses living neurons to improve AI models.

is building biodefense technologies.

uses AI to build autoimmune therapeutics.

provides virtual surgery consults and was acquired by Mendaera.

helps reduce energy costs and emissions.

is building a large physics foundation model for the weather.

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

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

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

is developing the pill for men.

helped providers get paid and was acquired by $HCAT.

is a nicotine alternative company.

uses immune organoids to design drugs.

builds and operates Micro GEO satellites.

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

builds advanced spacecraft for sustained maneuver.

is robotics for data centers.

creates specialized lipids for premium brands.

is a global parametric flood insurance solution.

is robotics for the grid.

is advancing hormone-free IVF.

uses AI and robotics to develop novel drugs.

is the foundation model for the subsurface.

is building novel products for cell and gene therapy.

is the simplest, smartest backup home battery.

develops orally-inhaled therapeutics.

is making safer drugs.

is a digital recovery program and was acquired by Monument.

is advancing medicine with intelligent pathology.

helps the world communicate science.

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

is a modern employer health plan.

engineers yeast to do incredible things.

provides medication and support for quitting opioids.

develops off-the-shelf cancer therapies.

manufactures the most advanced electric powertrains.

is toxin removal for our bodies.

unlocks a deeper understanding of your mind.

is modernizing revenue cycle operations for healthcare.

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

5

Funds

$50M

Size

$1-2M

Checks

1

Employee