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 a senior care marketplace and was acquired by $IAC.

is the foundation model for the subsurface.

is building biodefense technologies.

is a modern employer health plan.

is personalized therapies for rare disease.

is fighting COVID and was acquired by $NRBO.

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

enriches isotopes for nuclear energy.

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

is modernizing revenue cycle operations for healthcare.

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

unlocks a deeper understanding of your mind.

manufactures chemicals using biology.

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

is building novel products for cell and gene therapy.

is advancing hormone-free IVF.

is building a large physics foundation model for the weather.

builds and operates Micro GEO satellites.

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

is a digital recovery program and was acquired by Monument.

is AI inference infrastructure at the metro edge.

is automation tech and was acquired by $XMTR.

uses AI to build autoimmune therapeutics.

helps reduce energy costs and emissions.

is modern emergency department software.

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

is developing therapeutics for the immune system.

develops off-the-shelf cancer therapies.

is a nicotine alternative company.

provides lifelong mental health support.

is bringing the chemical industry online.

is toxin removal for our bodies.

is making safer drugs.

is robotics for the grid.

is the simplest, smartest backup home battery.

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

provides medication and support for quitting opioids.

uses immune organoids to design drugs.

is developing the pill for men.

helps couples have healthy babies.

helped providers get paid and was acquired by $HCAT.

is a global parametric flood insurance solution.

is advancing medicine with intelligent pathology.

is robotics for data centers.

helps the world communicate science.

transforms kelp into chemicals.

uses living neurons to improve AI models.

develops orally-inhaled therapeutics.

manufactures the most advanced electric powertrains.

engineers yeast to do incredible things.

is software for aerospace and defense.

is telehealth orthodontics and was acquired by Impress.

was a crypto wallet and was acquired by FTX.

is bringing land back online.

edits crop genomes and activates novel traits.

provides virtual surgery consults and was acquired by Mendaera.

builds advanced spacecraft for sustained maneuver.

is building a virtual immune system.

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

uses AI and robotics to develop novel drugs.

creates specialized lipids for premium brands.

5

Funds

$50M

Size

$1-2M

Checks

1

Employee