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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provides lifelong mental health support.

develops orally-inhaled therapeutics.

creates specialized lipids for premium brands.

helps couples have healthy babies.

is software for aerospace and defense.

manufactures chemicals using biology.

is bringing land back online.

uses immune organoids to design drugs.

develops off-the-shelf cancer therapies.

uses AI and robotics to develop novel drugs.

engineers yeast to do incredible things.

is personalized therapies for rare disease.

provides medication and support for quitting opioids.

is building a large physics foundation model for the weather.

is fighting COVID and was acquired by $NRBO.

is automation tech and was acquired by $XMTR.

is modern emergency department software.

is a nicotine alternative company.

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

unlocks a deeper understanding of your mind.

is telehealth orthodontics and was acquired by Impress.

is developing the pill for men.

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

builds and operates Micro GEO satellites.

enriches isotopes for nuclear energy.

is modernizing revenue cycle operations for healthcare.

is making safer drugs.

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

is developing therapeutics for the immune system.

edits crop genomes and activates novel traits.

is advancing hormone-free IVF.

is a digital recovery program and was acquired by Monument.

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

builds advanced spacecraft for sustained maneuver.

is a modern employer health plan.

was a crypto wallet and was acquired by FTX.

helped providers get paid and was acquired by $HCAT.

provides virtual surgery consults and was acquired by Mendaera.

is robotics for the grid.

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

is AI inference infrastructure at the metro edge.

is the simplest, smartest backup home battery.

uses AI to build autoimmune therapeutics.

uses living neurons to improve AI models.

is a global parametric flood insurance solution.

is bringing the chemical industry online.

transforms kelp into chemicals.

helps reduce energy costs and emissions.

is building a virtual immune system.

is the foundation model for the subsurface.

is building biodefense technologies.

is building novel products for cell and gene therapy.

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

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

is robotics for data centers.

is advancing medicine with intelligent pathology.

manufactures the most advanced electric powertrains.

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

helps the world communicate science.

is toxin removal for our bodies.

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

5

Funds

$50M

Size

$1-2M

Checks

1

Employee