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 mental health company and was acquired by Modern Health.

is developing therapeutics for the immune system.

is telehealth orthodontics and was acquired by Impress.

is fighting COVID and was acquired by $NRBO.

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

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

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

helps couples have healthy babies.

is a modern employer health plan.

is building a large physics foundation model for the weather.

manufactures chemicals using biology.

is the simplest, smartest backup home battery.

is automation tech and was acquired by $XMTR.

is making safer drugs.

is building a virtual immune system.

develops orally-inhaled therapeutics.

is the foundation model for the subsurface.

is building biodefense technologies.

builds and operates Micro GEO satellites.

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

uses immune organoids to design drugs.

manufactures the most advanced electric powertrains.

creates specialized lipids for premium brands.

uses AI to build autoimmune therapeutics.

is bringing land back online.

is software for aerospace and defense.

provides medication and support for quitting opioids.

edits crop genomes and activates novel traits.

is modern emergency department software.

helped providers get paid and was acquired by $HCAT.

develops off-the-shelf cancer therapies.

unlocks a deeper understanding of your mind.

is personalized therapies for rare disease.

was a crypto wallet and was acquired by FTX.

is toxin removal for our bodies.

is advancing hormone-free IVF.

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

is modernizing revenue cycle operations for healthcare.

transforms kelp into chemicals.

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

is a nicotine alternative company.

is a global parametric flood insurance solution.

is robotics for the grid.

enriches isotopes for nuclear energy.

is advancing medicine with intelligent pathology.

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

helps reduce energy costs and emissions.

is robotics for data centers.

is building novel products for cell and gene therapy.

provides virtual surgery consults and was acquired by Mendaera.

engineers yeast to do incredible things.

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

helps the world communicate science.

uses living neurons to improve AI models.

uses AI and robotics to develop novel drugs.

is developing the pill for men.

is a digital recovery program and was acquired by Monument.

is AI inference infrastructure at the metro edge.

is bringing the chemical industry online.

builds advanced spacecraft for sustained maneuver.

provides lifelong mental health support.

5

Funds

$50M

Size

$1-2M

Checks

1

Employee