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Refactor

North America, California, United States, Burlingame

Description

Refactor Capital is a prominent seed-stage venture capital firm based in Burlingame, California, dedicated to investing in companies at the forefront of bio, climate, and hard tech innovation. Founded by Zack Bogue and Tige Savage, the firm leverages its partners' extensive experience in technology and finance to identify and nurture startups with the potential for significant, long-term impact. Refactor distinguishes itself by focusing on foundational technologies that address pressing global challenges, seeking out companies with strong scientific or engineering defensibility.

The firm's investment strategy centers on providing the crucial first institutional capital to early-stage companies. Refactor typically writes initial checks ranging from $500,000 to $2,000,000, aiming to be a lead investor or a significant participant in seed rounds. Beyond capital, Refactor adopts a hands-on approach, working closely with founders to navigate the complexities of product development, market entry, and team building. Their operational expertise and robust network are critical resources for portfolio companies as they scale from concept to commercialization.

Refactor Capital has demonstrated a consistent growth in its capital base, reflecting its successful investment thesis and increasing influence in the deep tech ecosystem. The firm raised a $50 million Fund I, followed by a $100 million Fund II. Most recently, Refactor closed its Fund III in 2022, securing $150 million in commitments. This latest fund brings their total assets under management to approximately $300 million, enabling them to support a growing portfolio of high-potential ventures and participate in follow-on rounds as their companies mature.

The firm's portfolio showcases its commitment to backing ambitious founders who are developing proprietary solutions across diverse sectors, including advanced materials, synthetic biology, renewable energy, and artificial intelligence applied to complex physical problems. Refactor's disciplined focus on technically challenging, capital-intensive sectors underscores its belief that breakthrough innovations in these areas are essential for shaping the future and delivering substantial returns.

Investor Profile

Refactor has backed more than 88 startups, with 6 new investments in the last 12 months alone. The firm has led 15 rounds, about 17% of its total and boasts 10 exits across its portfolio.

Investment Focus Highlights

  • Concentrates on Seed, Series A, Series B rounds (top funding stages).
  • Majority of deals are located in United States, United Kingdom.
  • Strong thematic focus on Health Care, Biotechnology, Medical.
  • Led 2 rounds in the past year.
  • Typical check size: $500K – $2M.

Stage Focus

  • Seed (52%)
  • Series A (25%)
  • Series B (9%)
  • Series C (3%)
  • Series D (3%)
  • Pre Seed (3%)
  • Series Unknown (3%)

Country Focus

  • United States (98%)
  • United Kingdom (2%)

Industry Focus

  • Health Care
  • Biotechnology
  • Medical
  • Internet
  • Life Science
  • Health Diagnostics
  • Manufacturing
  • Pharmaceutical
  • Genetics
  • Biopharma
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FAQ

Frequently Asked Questions

Learn who this investor regularly partners with—both firms and angels—and explore their latest activity.

Who does Refactor frequently co-invest with?

Cantos
North America, California, United States, San Francisco
Co-Investments: 9
KdT Ventures
North America, Texas, United States, Austin
Co-Investments: 6
Soma Capital
North America, California, United States, San Francisco
Co-Investments: 8
8VC
North America, California, United States, San Francisco
Co-Investments: 6
Y Combinator
North America, California, United States, Mountain View
Co-Investments: 19
SV Angel
North America, California, United States, San Francisco
Co-Investments: 9
BoxGroup
North America, New York, United States, New York
Co-Investments: 9
Fifty Years
North America, California, United States, San Francisco
Co-Investments: 13
Andreessen Horowitz
North America, California, United States, Menlo Park
Co-Investments: 8
Slow Ventures
North America, California, United States, San Francisco
Co-Investments: 6

Which angels does Refactor often collaborate with?

Balaji Srinivasan
Asia, Central Region, Singapore, Singapore
Shared Deals: 2
JD
North America, California, United States, Palo Alto
Shared Deals: 4
SH
North America, California, United States, San Francisco
Shared Deals: 2
BA
North America, California, United States, San Francisco
Shared Deals: 2
JG
North America, California, United States, San Francisco
Shared Deals: 4
JT
Europe, Harjumaa, Estonia, Tallinn
Shared Deals: 2
BF
North America, California, United States, San Francisco
Shared Deals: 3
AW
North America, California, United States, San Francisco
Shared Deals: 2
MB
Europe, Cambridgeshire, United Kingdom, Cambridge
Shared Deals: 2
KM
North America, Texas, United States, Dallas
Shared Deals: 2

What are some of recent deals done by Refactor?

Remedy Scientific

San Francisco, California, United States

Remedy Scientific is a pioneering environmental remediation technology firm

Artificial Intelligence (AI)Environmental ConsultingSensor
SeedApr 9, 2025
Amount Raised: $11,000,000
Pilgrim

Redwood City, California, United States

Building the warfighter of tomorrow.

Health DiagnosticsMedical DeviceMilitaryNational Security
Pre SeedMar 17, 2025
Amount Raised: $3,250,000
Causal Labs

San Francisco, California, United States

Causal Labs provides AI physics models to predict and control the weather.

Artificial Intelligence (AI)InternetPredictive AnalyticsSoftware
SeedMar 12, 2025
Amount Raised: $6,000,000
MIIST Therapeutics

Alameda, California, United States

MIIST Therapeutics is a pulmonary drug delivery system and digital platform that enhances the science of inhaled drugs.

Health CareMedicalPharmaceutical
SeedFeb 5, 2025
Amount Raised: $7,000,000
General Galactic

El Segundo, California, United States

General Galactic revolutionize the energy supply chain by producing synthetic hydrocarbons from air and waste CO2.

EnergyEnergy ManagementRenewable Energy
SeedOct 11, 2024
Amount Raised: $8,000,000
Astranis

San Francisco, California, United States

Astranis is a space startup that builds small and low-cost telecommunications satellites to provide internet access in remote regions.

AerospaceInternetSatellite CommunicationTelecommunications
Series DJul 24, 2024
Amount Raised: $200,000,000
Granza Bio

San Francisco, California, United States

Granza Bio is a company that developing cancer therapies based on human body's immune system.

BiopharmaBiotechnologyMedicalWellness
SeedJul 3, 2024
Amount Raised: $7,140,000
Bedrock Materials

Palo Alto, California, United States

Bedrock Materials is a startup company developing materials and manufacturing procedures for low-cost sodium-ion batteries.

ChemicalManufacturing
SeedMay 16, 2024
Amount Raised: $9,000,000
Rubedo Life Sciences

Sunnyvale, California, United States

Rubedo Life Sciences focuses on developing medicines that target the specific cells responsible for aging, known as pathologic cells.

BiotechnologyHealth CareLife Science
Series AApr 22, 2024
Amount Raised: $40,000,000
Orchid

San Francisco, California, United States

Orchid is a reproductive technology startup that is capable of detecting rare genetic disorders.

BiotechnologyHealth CareMedicalmHealth
SeedDec 5, 2023
Amount Raised: $12,000,000