Prime Movers Lab
UnclaimedAt a Glance
- Check Size
- $500K – $15M
- Stage
- Seed, Series A
- AUM
- $500M+
- Sectors
- Deeptech, Climate, Space +1
- Founded
- 2018
- HQ
- Jackson, WY
About Prime Movers Lab
Prime Movers Lab was founded by Dakin Sloss with the mission of backing entrepreneurs building breakthrough scientific companies that can transform massive industries through deep technology innovation. The firm focuses specifically on startups leveraging advances in physics, materials science, and engineering to solve fundamental problems in energy, transportation, infrastructure, manufacturing, and human augmentation. Prime Movers Lab has built a reputation for identifying and supporting some of the most ambitious deep tech companies, including nuclear fusion company Commonwealth Fusion Systems, carbon transformation company Twelve, and next-generation battery developer Solid Power.
The firm's investment philosophy centers on the belief that the biggest opportunities lie in companies that can achieve breakthrough performance improvements through scientific innovation rather than incremental software-based solutions. With offices in Jackson, Wyoming and San Francisco, Prime Movers Lab provides patient capital and extensive technical expertise to help founders navigate the longer development cycles and capital requirements typical of deep tech ventures.
Investment Thesis
“Invests in scientists and engineers who are reinventing energy, transportation, and more.”
Sector Focus
Investment Stage
Notable Portfolio Companies
Key Team (1)
Dakin Sloss
Founder & General Partner
Fund History
- Dakin Sloss founded Prime Movers Lab in 2018 to write early checks into breakthrough science companies, a category most venture firms avoided on development-timeline grounds.
- The debut fund came in near $100 million.
- The firm's largest single vehicle is the $500 million Early Growth Fund announced in September 2022, raised so the firm could hold ownership as portfolio companies move from technical validation into commercial scale rather than cede those rounds to crossover investors.
- A $245 million early-stage fund followed in July 2023, closed into a materially harder fundraising market than its predecessors.
- Across vehicles the firm reports more than $1.2 billion raised and investments in over 55 companies spanning energy, transportation, infrastructure, manufacturing, agriculture, and human augmentation.
- Prime Movers Lab runs out of Jackson, Wyoming with a San Francisco presence, and staffs engineering and biology diligence in house rather than outsourcing technical review.
SEC Fund Filings
- Vehicles filed, last 24 months
- 2
- Latest filing
Prime Movers Lab filed a Form D for 2 fund vehicles between Sep 30, 2024 and Sep 29, 2026.
| Fund vehicle | Source |
|---|---|
| Prime Movers Early Growth Fund II LP | SEC Form D, filed |
| Prime Movers Fund IV LP | SEC Form D, filed |
A Form D is the notice a fund files with the SEC when it raises money in a private offering. Feeder funds, parallel funds and SPVs each file their own, so the count measures filing activity, not the number of flagship funds.
Source: SEC EDGAR Form D filings for pooled investment funds, original filings only (amendments excluded). Our filing data starts Jul 1, 2024. Vehicles are matched to Prime Movers Lab by fund name and checked against the sponsor address and named principals on each filing; offering amounts are not shown. Each “SEC Form D” link opens an EDGAR full-text search for that vehicle’s exact name, where the filing itself is listed. See every new fund filing on the Form D Radar.
Frequently Asked Questions
What stage does Prime Movers Lab invest at?
Prime Movers Lab primarily invests at the Seed, Series A stages. This means they focus on companies that are building their initial product and finding product-market fit.
Where is Prime Movers Lab located?
Prime Movers Lab is headquartered in Jackson, WY. Many of their portfolio companies are also based in this region, though they invest across geographies.
What sectors does Prime Movers Lab focus on?
Prime Movers Lab focuses on investments in Deeptech, Climate, Space, Biotech. Their portfolio reflects deep expertise and networks within these sectors.
What is Prime Movers Lab's typical check size?
Prime Movers Lab's typical investment check size ranges from $500K to $15M. Actual amounts may vary based on the stage, sector, and specific opportunity.
How much does Prime Movers Lab have under management?
Prime Movers Lab manages approximately $500M+ in assets under management (AUM) across their funds.
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