Funding rounds
Announced	Stage	Amount	Valuation	Lead investors	Other investors	Confidence
Mar 5, 2026	Series C	$550M	$8.00B	LuminArx Capital Management	Coatue Management, General Atlantic, Moore Strategic Ventures	Confirmed
Sep 26, 2023	Series B	$290M	$5.30B?	Kanematsu Corporation, MUFG Bank, Tokio Marine & Nichido Fire Insurance	AE Industrial, BlackRock, Coatue Management, General Atlantic, Moore Strategic Ventures	Confirmed
Nov 19, 2021	Series A	$1.40B	$4.50B?	Coatue Management, General Atlantic, Moore Strategic Ventures	AE Industrial, BlackRock	Confirmed

Series C
Led by LuminArx Capital Management
With Coatue Management, General Atlantic, Moore Strategic Ventures
Valuation $8.00B
Confirmed
$550M
Mar 5, 2026
Series B
Led by Kanematsu Corporation, MUFG Bank, Tokio Marine & Nichido Fire Insurance
With AE Industrial, BlackRock, Coatue Management, General Atlantic, Moore Strategic Ventures
Valuation $5.30B?
Confirmed
$290M
Sep 26, 2023
Series A
Led by Coatue Management, General Atlantic, Moore Strategic Ventures
With AE Industrial, BlackRock
Valuation $4.50B?
Confirmed
$1.40B
Nov 19, 2021

Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.

Systems17

Clamp Band Opening Devices

Clamp-band opening devices for spacecraft payload separation.

Maturity not rated

Dream Chaser

Reusable spaceplane being developed for cargo transport to and from low Earth orbit.

Maturity not rated

Photo: NASA / Kim Shiflett · Public domain (PD-USGov-NASA)

Eclipse Horizon

Satellite platform intended for proliferated low-Earth-orbit constellations.

Maturity not rated

Eclipse Titan

Spacecraft platform designed for in-orbit transport, refueling and payload delivery.

Maturity not rated

Eclipse Velocity

Satellite platform designed for space-control missions with flexible payload and servicing capabilities.

Maturity not rated

Fast Acting Shock-less Separation Nuts

Separation nuts for restraining and releasing spacecraft cargo pallets.

Maturity not rated

View all 17 systems →

Newest unveiled first. Open a system for its milestone timeline, components and sources.

Capabilities1

Capabilities
Technology	Role	Maturity	TRL	Notes	Confidence
Space, launch and counterspace	Developer	—	—	classify_sectors run 37, haiku, taxonomy 2026-10-18b: Delivers spacecraft and orbital infrastructure for National Security as well as civil and commercial space.	Reported

Space, launch and counterspace
Developer
classify_sectors run 37, haiku, taxonomy 2026-10-18b: Delivers spacecraft and orbital infrastructure for National Security as well as civil and commercial space.
—Reported

Maturity and TRL describe this organization's work; the field-wide maturity is on each technology's page.

People7

All 7 people →

People
Person	Role
Eren Ozmen · LinkedIn ↗	Founder
Fatih Ozmen · LinkedIn ↗	Founder
Amish Patel · LinkedIn ↗	Chief Operating Officer
Daniel Jablonsky · LinkedIn ↗	Chief Executive Officer
Heidi Hendrix · LinkedIn ↗	Chief People Officer
Kelly Garehime · LinkedIn ↗	Chief Legal and Ethics Officer & Corporate Secretary
Tom Marshburn	Chief Medical Officer

Sources15

Show all 15 sources and supporting evidence

Profile2

1
DatabaseSixth-Domain public startups directory
Sixth-Domain · Supports Organization · kind
“{"group": "startups", "id": "36f8641d-b577-4e17-9472-d017159ea872", "name": "Sierra Space"}”
2
DatabaseSierra Space - LinkedIn company profile
LinkedIn · Supports Organization · country, Organization · employee range, Organization · founded year, Organization · hq city, Organization · linkedin url
“country: US”

Systems7

3
CompanySierra Space | Defining the New Era of Space Defense Technology
Sierra Space · Supports Organization · description, Organization · name, Organization · website, System
“Sierra Space delivers mission-ready systems, spacecraft technologies, and orbital infrastructure for National Security, civil, and commercial space.”
4
CompanyDream Chaser Tenacity Uncrewed Cargo Spaceplane | Sierra Space
Sierra Space · Supports System
“Sierra Space’s [Shooting Star™ cargo module](https://sierraspace.com/space-transportation/shooting-star-cargo-module/) is a flexible 15-foot transport and cargo vehicle to be used as an attachment to the Dream Chaser spaceplane. Dream Chaser, with the help of Shooting Star, can deliver up to 12,000 pounds of pressurized and unpressurized cargo to low-Earth orbit”
5
CompanyNational Security Space & Defense Technology | Sierra Space
Sierra Space · Supports System
“Sierra Space Ghost is a **state-of-the-art space delivery system** engineered to safely return objects from space – and through space – directly to precise locations on Earth.”
6
CompanyEclipse™ Satellite Bus Line | Defense Technology | Sierra Space
Sierra Space · Supports System
“## Eclipse Titan ### Built for Space Mobility - Operates as the spacecraft carrier enabling last mile delivery and a depot to rearm & refuel”
7
CompanyOrbital Reef | The New Space Station | Sierra Space
Sierra Space · Supports System
“The Orbital Reef station, led by principal partners Sierra Space Corporation and Blue Origin, will open the next chapter of human space exploration and development by facilitating the growth of a vibrant ecosystem and business model for the future.”
8
CompanyRocket Engines, Fuel & Propulsion Systems | Sierra Space
Sierra Space · Supports System
“Our patented VORTEX® engine thrust chamber assembly confines propellant mixing and burning to the core region of a coaxial vortex flow field. Enabling dramatic cost savings through robust design margins also leads to extremely high durability, reliability, and reusability in engines that are inexpensive to manufacture and maintain.”
9
CompanySpacecraft Subsystems & Hardware | Sierra Space
Sierra Space · Supports System
“Our technology captured and docked two spacecraft together on-orbit for the Orbital Express program. Proprietary advancements allowed for remote servicing, such as refueling and replacement of outdated and expended components. We have now leveraged the mechanical systems experience, becoming the go-to supplier for the industry standard Passive Common Berthing Mechanism (PCBM). This is required for spacecraft such as the Orbital Cygnus Advanced Maneuvering Vehicle and the Bigelow Expandable Activity Module to berth with the International Space Station.”

Funding5

10
CompanySierra Space Closes $550 Million in Series C Round, with a Valuation of $8 Billion
Sierra Space · Mar 5, 2026 · Supports Funding round · amount, Funding round · post money valuation usd, Organization · ownership
“announced today a $550 million equity investment led by LuminArx Capital Management”
11
CompanySierra Space Increases Total Investment to a Record $1.7 Billion with $290M Series B Funding, Bringing Valuation to $5.3 Billion
Sierra Space · Sep 26, 2023 · Supports Funding round, Funding round · amount, Funding round · post money valuation usd
“The round is co-led by Japan’s largest bank, MUFG, Kanematsu Corporation, a Japanese trading company and Tokio Marine & Nichido Fire Insurance”
12
CompanySierra Space funding announcement
AE Industrial Partners · Nov 29, 2021 · Supports Funding round
“announced today a $1.4 billion Series A investment of primary capital”
13
NewsSierra Space raises $1.4 billion
SpaceNews · Nov 19, 2021 · Supports Funding round, Funding round · post money valuation usd
“led by General Atlantic, Coatue and Moore Strategic Ventures”
14
CompanySierra Space Secures Record $1.4 Billion Series A Growth Investment and Achieves $4.5 Billion Valuation
General Atlantic · Nov 19, 2021 · Supports Funding round · amount
“announced today a $1.4 billion Series A investment of primary capital”

People1

15
DatabaseSierra Space - Crunchbase company profile
Crunchbase · Supports Organization · country, Organization · employee range, Organization · hq city, Organization · linkedin url, Organization · x url, Role
“country: US”

Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.