Seth Bannon
Founding Partner @ Fifty Years
San Francisco, United States
Seth Bannon is a Founding Partner at Fifty Years, a San Francisco based seed fund that backs entrepreneurs solving the world’s biggest problems with technology. Seth has seeded many sustainability startups shaping the world for the better — companies like Memphis Meats (culturing meat to eat), Solugen (engineering enzymes to produce industrialchemicals sustainably), Geltor (recombinantly making collagen and gelatin), and Cover (building homes like Tesla builds cars) to companies in sustainable food, transportation, and finance.Seth is also the co-founder of impact.tech, a community of entrepreneurs combining purpose with profit, and was previously the founder & CEO of startup Amicus. A graduate of Y Combinator, Seth was named twice to the Forbes 30 Under 30 list for Social Entrepreneurship.Seth can occasionally be found in parks around the world attempting to hustle chess hustlers.
- Total investments:
- 20
- Last investment:
- Lead investor:
- 35%
Last updated:
For AI agents: llms.txt
Industries Seth Bannon invests in
Stages Seth Bannon invests in
Countries Seth Bannon invests in
Investment Focus
Industry
- Software 3 (15%)
- Artificial Intelligence 3 (15%)
- Energy 2 (10%)
- Hardware 2 (10%)
- Biopharma 2 (10%)
Stage
- Seed 8 (40%)
- Series A 4 (20%)
- Pre-Seed 3 (15%)
- Series B 2 (10%)
- Angel 1 (5%)
Country
- United States 10 (50%)
- Canada 1 (5%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Gridware
|
Gridware offers a grid-intelligence platform that equips utilities with real-time visibility into the physical, electrical, and environmental conditions of their overhead infrastructure. Its core product, GridScope, is a small, solar-powered sensor mounted on utility poles that continuously monitors mechanical vibrations, electrical activity, andambient stressors even during outages. On-device analytics identify hazards, localize faults, and classify their severity, allowing line crews to respond efficiently and safely. Through its Active Grid Response system, Gridware helps utilities detect issues before they escalate, supporting timely maintenance and more stable grid operations. | $55M / Series B / Nov 17, 2025 | |
Blueprint Bryan Johnson
|
Blueprint is Bryan Johnson’s protocol made accessible to everyone. Everything from measurements to protocols and therapies. | $60M / Angel / Oct 28, 2025 | |
|
Gridware
|
Gridware offers a grid-intelligence platform that equips utilities with real-time visibility into the physical, electrical, and environmental conditions of their overhead infrastructure. Its core product, GridScope, is a small, solar-powered sensor mounted on utility poles that continuously monitors mechanical vibrations, electrical activity, andambient stressors even during outages. On-device analytics identify hazards, localize faults, and classify their severity, allowing line crews to respond efficiently and safely. Through its Active Grid Response system, Gridware helps utilities detect issues before they escalate, supporting timely maintenance and more stable grid operations. | $10.5M / Seed / Jun 13, 2023 | |
Tangible
|
Tangible is a climate technology company focused on building sustainable materials that are not harmful to the environment. Tangible is a unified software platform that catalyzes the adoption of sustainable building materials by allowing real estate developers, architects, and contractors to seamlessly identify, manage, and report on products thatmeet their carbon, environmental, and social goals.Founded in 2021 by Nicole Granath and Anneli Tostar, Tangible is headquartered in San Francisco, California, United States. | $3M / Seed / May 16, 2023 | |
Farcast
|
Unlocking satellite internet capacity through user terminal innovation | $8M / Series A / Dec 30, 2022 | |
LatchBio
|
LatchBio develops a data infrastructure intended to build and disseminate the open-source infrastructure of the biocomputing revolution. Founded in 2021 by Alfredo Andere, Kyle Giffin, and Kenny Workman, the company creates open-source machine learning and cloud infrastructure for the next generation of therapeutic discovery, thereby enablingbiotech companies to find therapies faster and save on engineering. | $28M / Series A / Jun 02, 2022 | |
HealthLeap
|
Our mission at HealthLeap is to improve global health through better nutrition. We're addressing one of the most significant contributors to global deaths by building a clinical assistant to help healthcare professionals better treat/prevent disease-related malnutrition — the "silent killer" that worsens health outcomes fornearly all sick patients. It is associated with a 3-5x increase in mortality during a hospital stay and affects 30-50% of all hospital patients, but only 5% are diagnosed. | $1.1M / Pre-Seed / Jan 06, 2022 | |
Valence Discovery
|
Valence Discovery is building the world’s most powerful chemistry engine. The company has pioneered the application of few-shot learning in drug design, along with the development of best-in-class AI methods for molecular representation, structure and ligand-based de novo design, and multiparameter optimization, enabling the design of novelchemistry against previously intractable biology. | $7M / Seed / Dec 15, 2021 | |
Flux
|
Flux is built on a simple belief: hardware design should be as effortless as typing a prompt. Our browser‑native AI hardware engineer turns that vision into reality, shouldering the entire electronics workflow so teams can move from idea to market at record speed. Hand it a high‑level requirement and watch it deliver: schematic capture, PCB layout,instant part procurement, peer‑grade reviews, programmable simulation, real‑time version control, and continuous cost‑versus‑performance optimization. | $12M / Seed / Oct 13, 2021 | |
|
LatchBio
|
LatchBio develops a data infrastructure intended to build and disseminate the open-source infrastructure of the biocomputing revolution. Founded in 2021 by Alfredo Andere, Kyle Giffin, and Kenny Workman, the company creates open-source machine learning and cloud infrastructure for the next generation of therapeutic discovery, thereby enablingbiotech companies to find therapies faster and save on engineering. | $5M / Seed / Oct 01, 2021 | |
| See all 20 investments → | |||
Co-Investors
About Fifty Years
Fifty Years is a venture capital firm that backs founders using technology to solve the world's biggest problems.Entrepreneur-run and based in San Francisco, Fifty Years invests in companies that inspire. Specifically, they fund companies that, if successful, will be both massively profitable and make a serious dent in achieving one ormore of the Sustainable Development Goals.
Fifty Years Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Ela Madej
Co-founder and Partner
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Seth Bannon
Founding Partner
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Chris Waclawek
Impact Investor
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Drew Moxon
Head of Platform and Product
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Peregrine Badger
Instigator
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FAQ
What does Seth Bannon invest in?
Seth Bannon invests primarily in Software, Artificial Intelligence and Energy startups, most often at Seed and Series A stage. Most of the 20 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
When did Seth Bannon last invest?
The most recent investment recorded for Seth Bannon closed in Nov 2025. Shizune tracks 20 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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