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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uses immune organoids to design drugs.

manufactures chemicals using biology.

is modern emergency department software.

is developing the pill for men.

helps the world communicate science.

is a nicotine alternative company.

unlocks a deeper understanding of your mind.

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

is building biodefense technologies.

creates specialized lipids for premium brands.

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

helps couples have healthy babies.

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

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

is the foundation model for the subsurface.

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

provides medication and support for quitting opioids.

is advancing medicine with intelligent pathology.

manufactures the most advanced electric powertrains.

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

is building novel products for cell and gene therapy.

is AI inference infrastructure at the metro edge.

is advancing hormone-free IVF.

is a digital recovery program and was acquired by Monument.

is toxin removal for our bodies.

engineers yeast to do incredible things.

is automation tech and was acquired by $XMTR.

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

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

provides lifelong mental health support.

is a global parametric flood insurance solution.

is robotics for data centers.

builds and operates Micro GEO satellites.

uses living neurons to improve AI models.

is building a large physics foundation model for the weather.

edits crop genomes and activates novel traits.

helps reduce energy costs and emissions.

is bringing land back online.

is fighting COVID and was acquired by $NRBO.

develops orally-inhaled therapeutics.

builds advanced spacecraft for sustained maneuver.

helped providers get paid and was acquired by $HCAT.

is bringing the chemical industry online.

uses AI and robotics to develop novel drugs.

uses AI to build autoimmune therapeutics.

enriches isotopes for nuclear energy.

is a modern employer health plan.

provides virtual surgery consults and was acquired by Mendaera.

is telehealth orthodontics and was acquired by Impress.

was a crypto wallet and was acquired by FTX.

is robotics for the grid.

is modernizing revenue cycle operations for healthcare.

is making safer drugs.

is developing therapeutics for the immune system.

is personalized therapies for rare disease.

is software for aerospace and defense.

is building a virtual immune system.

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

transforms kelp into chemicals.

is the simplest, smartest backup home battery.

develops off-the-shelf cancer therapies.

5

Funds

$50M

Size

$1-2M

Checks

1

Employee