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 advancing hormone-free IVF.

is toxin removal for our bodies.

helps reduce energy costs and emissions.

develops off-the-shelf cancer therapies.

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

engineers yeast to do incredible things.

is modern emergency department software.

creates specialized lipids for premium brands.

uses AI to build autoimmune therapeutics.

unlocks a deeper understanding of your mind.

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

is robotics for data centers.

is advancing medicine with intelligent pathology.

is modernizing revenue cycle operations for healthcare.

provides lifelong mental health support.

uses AI and robotics to develop novel drugs.

is a modern employer health plan.

manufactures the most advanced electric powertrains.

is a global parametric flood insurance solution.

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

is building novel products for cell and gene therapy.

is fighting COVID and was acquired by $NRBO.

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

enriches isotopes for nuclear energy.

is building a large physics foundation model for the weather.

transforms kelp into chemicals.

is building biodefense technologies.

edits crop genomes and activates novel traits.

is developing the pill for men.

is making safer drugs.

is bringing land back online.

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

uses living neurons to improve AI models.

is developing therapeutics for the immune system.

builds and operates Micro GEO satellites.

provides medication and support for quitting opioids.

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

is the foundation model for the subsurface.

is personalized therapies for rare disease.

is automation tech and was acquired by $XMTR.

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

was a crypto wallet and was acquired by FTX.

manufactures chemicals using biology.

is AI inference infrastructure at the metro edge.

provides virtual surgery consults and was acquired by Mendaera.

uses immune organoids to design drugs.

is telehealth orthodontics and was acquired by Impress.

develops orally-inhaled therapeutics.

is a nicotine alternative company.

is a digital recovery program and was acquired by Monument.

helps couples have healthy babies.

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

is robotics for the grid.

is bringing the chemical industry online.

builds advanced spacecraft for sustained maneuver.

is building a virtual immune system.

helped providers get paid and was acquired by $HCAT.

is software for aerospace and defense.

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

is the simplest, smartest backup home battery.

helps the world communicate science.

5

Funds

$50M

Size

$1-2M

Checks

1

Employee