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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is the foundation model for the subsurface.

is robotics for data centers.

is modern emergency department software.

engineers yeast to do incredible things.

is building biodefense technologies.

is AI inference infrastructure at the metro edge.

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

uses living neurons to improve AI models.

builds and operates Micro GEO satellites.

is making safer drugs.

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

enriches isotopes for nuclear energy.

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

develops off-the-shelf cancer therapies.

is modernizing revenue cycle operations for healthcare.

unlocks a deeper understanding of your mind.

is the simplest, smartest backup home battery.

is building a large physics foundation model for the weather.

provides virtual surgery consults and was acquired by Mendaera.

uses immune organoids to design drugs.

was a crypto wallet and was acquired by FTX.

is building a virtual immune system.

is bringing land back online.

is personalized therapies for rare disease.

is advancing hormone-free IVF.

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

is advancing medicine with intelligent pathology.

is bringing the chemical industry online.

builds advanced spacecraft for sustained maneuver.

is a modern employer health plan.

manufactures the most advanced electric powertrains.

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

transforms kelp into chemicals.

provides lifelong mental health support.

is fighting COVID and was acquired by $NRBO.

is toxin removal for our bodies.

is robotics for the grid.

is telehealth orthodontics and was acquired by Impress.

helped providers get paid and was acquired by $HCAT.

helps reduce energy costs and emissions.

is a global parametric flood insurance solution.

creates specialized lipids for premium brands.

is a nicotine alternative company.

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

is developing the pill for men.

uses AI and robotics to develop novel drugs.

is developing therapeutics for the immune system.

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

manufactures chemicals using biology.

provides medication and support for quitting opioids.

edits crop genomes and activates novel traits.

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

uses AI to build autoimmune therapeutics.

develops orally-inhaled therapeutics.

is software for aerospace and defense.

is a digital recovery program and was acquired by Monument.

is building novel products for cell and gene therapy.

helps couples have healthy babies.

is automation tech and was acquired by $XMTR.

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

helps the world communicate science.

5

Funds

$50M

Size

$1-2M

Checks

1

Employee