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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provides medication and support for quitting opioids.

provides virtual surgery consults and was acquired by Mendaera.

uses AI and robotics to develop novel drugs.

is building novel products for cell and gene therapy.

is a digital recovery program and was acquired by Monument.

is modern emergency department software.

is modernizing revenue cycle operations for healthcare.

uses immune organoids to design drugs.

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

creates specialized lipids for premium brands.

helps couples have healthy babies.

is a nicotine alternative company.

is developing the pill for men.

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

is advancing medicine with intelligent pathology.

is AI inference infrastructure at the metro edge.

enriches isotopes for nuclear energy.

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

is developing therapeutics for the immune system.

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

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

helps the world communicate science.

develops orally-inhaled therapeutics.

is toxin removal for our bodies.

is building a large physics foundation model for the weather.

is robotics for the grid.

is bringing the chemical industry online.

engineers yeast to do incredible things.

edits crop genomes and activates novel traits.

is robotics for data centers.

builds advanced spacecraft for sustained maneuver.

manufactures the most advanced electric powertrains.

is fighting COVID and was acquired by $NRBO.

is advancing hormone-free IVF.

is telehealth orthodontics and was acquired by Impress.

unlocks a deeper understanding of your mind.

is software for aerospace and defense.

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

provides lifelong mental health support.

is building biodefense technologies.

is making safer drugs.

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

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

uses living neurons to improve AI models.

is bringing land back online.

is personalized therapies for rare disease.

is building a virtual immune system.

transforms kelp into chemicals.

uses AI to build autoimmune therapeutics.

is the simplest, smartest backup home battery.

is a global parametric flood insurance solution.

develops off-the-shelf cancer therapies.

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

helps reduce energy costs and emissions.

builds and operates Micro GEO satellites.

manufactures chemicals using biology.

helped providers get paid and was acquired by $HCAT.

was a crypto wallet and was acquired by FTX.

is a modern employer health plan.

is the foundation model for the subsurface.

is automation tech and was acquired by $XMTR.

5

Funds

$50M

Size

$1-2M

Checks

1

Employee