Ursa Major Technologies
Rocket propulsion and solid rocket motor manufacturer for hypersonics, space, and missile defense.
Ursa Major Technologies develops liquid and solid rocket propulsion, including the Arroway 200,000-lbf engine and Lynx solid rocket motor manufacturing process. Founded in 2015 by Joe Laurienti (CEO 2015-Aug 2024), the company was led by Dan Jablonsky from August 2024 until his departure February 19, 2026 to become Sierra Space's CEO; current CEO is Chris Spagnoletti (since Feb 19, 2026, previously President of Liquid Systems since 2022).
Overview
- Headquarters
- Berthoud, CO
- Founded
- 2015
- Employees
- ~270 (2023 figure, stale)
- Total funding
- $497M-$544M (aggregators disagree)
- Valuation
- ~$600M (single-source)
- Stage
- Series E
- Status
- active
- Domains
- X / Twitter
- x.com/ursamajortech
- Website
- ursamajor.com
Founders3
- FounderJoe LaurientiFounder of Ursa Major Technologies, ex-SpaceX/Blue Origin propulsion engineer.
- FounderChris SpagnolettiCEO of Ursa Major Technologies, previously President of Liquid Systems.
- FounderDan JablonskyChief Executive Officer of Sierra Space since March 2, 2026; previously chair and CEO of Ursa Major Technologies and CEO of Maxar Technologies.
Investors5
- FundBlackRockGlobal asset manager; invested €50M in IQM Quantum Computers (March 2026) ahead of its US listing.
- FundSpace CapitalVC firm investing at the intersection of space technology and global markets.
- FundHarpoon VenturesNational security-focused VC founded by former Navy SEAL Larsen Jensen.
- FundEclipse VenturesIndustrial-technology venture firm backing hardware/software companies, including defense manufacturing.
- FundRTX VenturesCorporate VC arm of RTX Corporation investing in aerospace and defense startups.
Cap table0
Approximate ownership by holder. Indexed holders link to their records.
Raised per round
Percentages marked ~ are not disclosed. Some are a generic VC-pattern model (founders/team weighted heaviest, option pool lightest, other holders evenly) sized to whatever's left undisclosed — a standard industry shape, not this company's actual cap table.
| Holder | Instrument | Ownership |
|---|---|---|
Alsop Louie PartnersReinvested | Series E Preferred | ~20.0% |
XNReinvested | Series E Preferred | ~20.0% |
Principia GrowthNew | Series E Preferred | ~20.0% |
Woodline PartnersNew | Series E Preferred | ~20.0% |
EclipseReinvested | Series E Preferred (lead) | ~20.0% |
Contracts2
Programs0
No linked records yet.
Frequently asked
- What does Ursa Major Technologies do?
- Ursa Major Technologies develops liquid and solid rocket propulsion, including the Arroway 200,000-lbf engine and Lynx solid rocket motor manufacturing process. Founded in 2015 by Joe Laurienti (CEO 2015-Aug 2024), the company was led by Dan Jablonsky from August 2024 until his departure February 19, 2026 to become Sierra Space's CEO; current CEO is Chris Spagnoletti (since Feb 19, 2026, previously President of Liquid Systems since 2022).
- Where is Ursa Major Technologies headquartered?
- Ursa Major Technologies is headquartered in Berthoud, CO and was founded in 2015.
- How much funding has Ursa Major Technologies raised?
- Ursa Major Technologies has raised $497M-$544M (aggregators disagree) in disclosed funding, at a most recent valuation of ~$600M (single-source).
- Does Ursa Major Technologies hold government contracts?
- Defense Tech Atlas links Ursa Major Technologies to 2 government contracts.
Sources & citations9
9 sources behind every claim
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