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.

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
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Stealth
Stealth D
Stealth
Stealth E
Stealth
Stealth F
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 a modern employer health plan.

enriches isotopes for nuclear energy.

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

is building novel products for cell and gene therapy.

is bringing the chemical industry online.

is robotics for the grid.

was a crypto wallet and was acquired by FTX.

uses AI and robotics to develop novel drugs.

is toxin removal for our bodies.

is bringing land back online.

helps the world communicate science.

provides medication and support for quitting opioids.

is automation tech and was acquired by $XMTR.

develops off-the-shelf cancer therapies.

is building a large physics foundation model for the weather.

is developing the pill for men.

is modernizing revenue cycle operations for healthcare.

is a nicotine alternative company.

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

is telehealth orthodontics and was acquired by Impress.

engineers yeast to do incredible things.

builds advanced spacecraft for sustained maneuver.

is robotics for data centers.

is fighting COVID and was acquired by $NRBO.

is making safer drugs.

helps couples have healthy babies.

edits crop genomes and activates novel traits.

is personalized therapies for rare disease.

unlocks a deeper understanding of your mind.

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

builds and operates Micro GEO satellites.

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

is AI inference infrastructure at the metro edge.

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

provides virtual surgery consults and was acquired by Mendaera.

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

is advancing medicine with intelligent pathology.

uses living neurons to improve AI models.

is building a virtual immune system.

helps reduce energy costs and emissions.

is software for aerospace and defense.

uses immune organoids to design drugs.

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

manufactures the most advanced electric powertrains.

manufactures chemicals using biology.

uses AI to build autoimmune therapeutics.

provides lifelong mental health support.

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

is the foundation model for the subsurface.

transforms kelp into chemicals.

is the simplest, smartest backup home battery.

is developing therapeutics for the immune system.

is modern emergency department software.

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

is advancing hormone-free IVF.

is a digital recovery program and was acquired by Monument.

is building biodefense technologies.

creates specialized lipids for premium brands.

is a global parametric flood insurance solution.

helped providers get paid and was acquired by $HCAT.

develops orally-inhaled therapeutics.

5

Funds

$50M

Size

$1-2M

Checks

1

Employee