Sierra Space valuation, funding and investors

Sierra Space works in space systems and subsystems manufacturing, based in Louisville, United States. Founded in 2021, it has about 1,360 employees.

Aerospace and Defence Louisville Series C

VALUATION · TODAY

$8.39B −9% after Series C

Range $6.95B – $9.91B · Grade A

TODAY

+12 MO

$5.00B

$10.00B

$15.00B

2022

2023

2024

2025

2026

2027

Series A $1.40B

Series B $290M

Series C $550M

ValuationBefore first round12-month outlook: where it points, how wide it fansHover the past: the outlook shows what was predicted then

HEADCOUNT · TODAY1,356 employees

−1%6m growth

−11%1y growth

−25%2y growth

1,000

2,000

Data from Mar 2022

TODAY

Predicted in 1 yr $7.66B −9% vs today

Predicted next raise $1.16B if a round comes

Winding-down probability 73%

Last round: Series C · $550M · Mar 2026
Valuation at last round: $8.00B
Headcount: 1,356 · down
Grade: A
Founded: 2021

How VCMC values companies →

Sierra Space valuation today

VCMC values Sierra Space at $8.4B today, with a range of $7.0B to $9.9B and a grade of A. The valuation starts from its last funding round, a Series C round in Mar 2026.

Valuation by date (74 rows)

Each point is what the model would have shown on that date, using only what was known then; before its first round, a company is valued as a startup because it later raised.

Sierra Space: valuation by date, as the model would have shown it on each date
Date	Valuation	Range	Predicted in 1 yr	Phase	Headcount	Trend	Grade	Winding-down probability
1 Jan 2021	$18.2M	$6.62M – $49.9M	$20.2M (+11%)	before first round	–	unknown	D	0%
1 Feb 2021	$18.3M	$6.68M – $50.4M	$20.4M (+11%)	before first round	–	unknown	D	0%
1 Mar 2021	$18.5M	$6.73M – $50.8M	$20.5M (+11%)	before first round	–	unknown	D	0%
1 Apr 2021	$18.7M	$6.79M – $51.3M	$20.7M (+11%)	before first round	–	unknown	D	0%
1 May 2021	$18.8M	$6.85M – $51.7M	$20.8M (+11%)	before first round	–	unknown	D	0%
1 Jun 2021	$19.0M	$6.92M – $52.2M	$21.0M (+10%)	before first round	–	unknown	D	0%
1 Jul 2021	$19.2M	$6.98M – $52.7M	$21.1M (+10%)	before first round	–	unknown	D	0%
1 Aug 2021	$19.3M	$7.04M – $53.1M	$21.3M (+10%)	before first round	–	unknown	D	0%
1 Sep 2021	$19.5M	$7.11M – $53.6M	$21.5M (+10%)	before first round	–	unknown	D	0%
1 Oct 2021	$19.7M	$7.17M – $54.1M	$21.6M (+10%)	before first round	–	unknown	D	0%
1 Nov 2021	$19.9M	$7.24M – $54.6M	$21.8M (+10%)	before first round	–	unknown	D	0%
20 Nov 2021	$4.5B	$3.9B – $9.3B	$8.1B (+80%)	after a round	–	unknown	B	0%
1 Dec 2021	$4.6B	$3.9B – $9.3B	$8.1B (+77%)	after a round	–	unknown	B	0%
1 Jan 2022	$4.8B	$3.9B – $9.3B	$8.1B (+68%)	after a round	–	unknown	B	0%
1 Feb 2022	$5.1B	$3.9B – $9.3B	$8.1B (+60%)	after a round	–	unknown	B	0%
1 Mar 2022	$5.3B	$3.9B – $9.3B	$8.1B (+53%)	after a round	780	unknown	B	0%
1 Apr 2022	$5.6B	$3.9B – $9.3B	$8.1B (+45%)	after a round	780	unknown	B	0%
1 May 2022	$5.8B	$3.9B – $9.3B	$8.1B (+38%)	after a round	780	unknown	B	0%
1 Jun 2022	$6.1B	$3.9B – $9.3B	$8.1B (+32%)	after a round	780	unknown	B	0%
1 Jul 2022	$6.5B	$3.9B – $9.3B	$8.1B (+26%)	after a round	780	unknown	B	0%
1 Aug 2022	$6.8B	$3.9B – $9.3B	$8.1B (+19%)	after a round	780	unknown	B	0%
1 Sep 2022	$7.1B	$3.9B – $9.3B	$8.1B (+14%)	after a round	780	unknown	B	0%
1 Oct 2022	$7.5B	$3.9B – $9.3B	$8.1B (+8%)	after a round	780	unknown	B	0%
1 Nov 2022	$7.9B	$3.9B – $9.3B	$8.1B (+3%)	after a round	780	unknown	B	0%
1 Dec 2022	$8.1B	$3.8B – $9.3B	$8.1B (0%)	after a round	780	unknown	B	0%
1 Jan 2023	$8.1B	$3.6B – $9.3B	$8.1B (0%)	after a round	780	unknown	B	0%
1 Feb 2023	$8.1B	$3.5B – $9.3B	$8.1B (0%)	after a round	780	unknown	B	0%
1 Mar 2023	$8.1B	$3.3B – $9.3B	$8.1B (0%)	after a round	780	unknown	B	0%
1 Apr 2023	$8.1B	$3.1B – $9.3B	$8.1B (0%)	after a round	780	unknown	B	0%
1 May 2023	$9.5B	$4.5B – $10.9B	$9.5B (0%)	after a round	1,600	growing	B	0%
1 Jun 2023	$9.5B	$4.7B – $10.9B	$9.5B (0%)	after a round	1,600	growing	B	0%
1 Jul 2023	$9.5B	$4.8B – $10.9B	$9.5B (0%)	after a round	1,600	growing	B	0%
1 Aug 2023	$9.5B	$4.9B – $10.9B	$9.5B (0%)	after a round	1,600	growing	B	0%
1 Sep 2023	$9.5B	$2.8B – $10.9B	$9.5B (0%)	after a round	1,600	unknown	C	0%
27 Sep 2023	$5.3B	$4.6B – $9.1B	$7.9B (+50%)	after a round	1,600	unknown	B	0%
1 Oct 2023	$5.3B	$4.6B – $9.1B	$7.9B (+49%)	after a round	1,600	unknown	B	0%
1 Nov 2023	$5.5B	$4.6B – $9.1B	$7.9B (+44%)	after a round	1,800	up	B	0%
1 Dec 2023	$5.7B	$4.6B – $9.1B	$7.9B (+39%)	after a round	1,800	up	B	0%
1 Jan 2024	$5.9B	$4.6B – $9.1B	$7.9B (+35%)	after a round	1,800	up	B	0%
1 Feb 2024	$6.1B	$4.6B – $9.1B	$7.9B (+30%)	after a round	1,800	up	B	0%
1 Mar 2024	$6.3B	$4.6B – $9.1B	$7.9B (+26%)	after a round	1,800	up	B	0%
1 Apr 2024	$6.5B	$4.6B – $9.1B	$7.9B (+22%)	after a round	1,800	up	B	0%
1 May 2024	$6.8B	$4.6B – $9.1B	$7.9B (+18%)	after a round	1,800	up	B	0%
1 Jun 2024	$7.0B	$4.6B – $9.1B	$7.9B (+14%)	after a round	1,800	up	B	0%
1 Jul 2024	$7.2B	$4.6B – $9.1B	$7.9B (+10%)	after a round	1,800	up	B	0%
1 Aug 2024	$7.5B	$4.6B – $9.1B	$7.9B (+6%)	after a round	1,800	up	B	0%
1 Sep 2024	$7.7B	$4.6B – $9.1B	$7.9B (+3%)	after a round	1,800	up	B	0%
1 Oct 2024	$7.9B	$4.6B – $9.1B	$7.9B (0%)	after a round	1,800	up	B	0%
1 Nov 2024	$7.9B	$4.4B – $9.1B	$7.9B (0%)	after a round	1,800	flat	B	0%
1 Dec 2024	$7.9B	$4.2B – $9.1B	$7.9B (0%)	after a round	1,800	flat	B	0%
1 Jan 2025	$7.9B	$4.0B – $9.1B	$7.9B (0%)	after a round	1,800	flat	B	0%
1 Feb 2025	$7.9B	$3.8B – $9.1B	$7.9B (0%)	after a round	1,800	flat	B	0%
1 Mar 2025	$7.9B	$3.7B – $9.1B	$7.9B (0%)	after a round	1,800	flat	B	0%
1 Apr 2025	$7.9B	$3.5B – $9.1B	$7.9B (0%)	after a round	1,800	flat	B	0%
1 May 2025	$7.9B	$3.4B – $9.1B	$7.9B (0%)	after a round	1,800	flat	B	0%
1 Jun 2025	$7.9B	$3.2B – $9.1B	$7.9B (0%)	after a round	1,800	flat	B	0%
1 Jul 2025	$7.9B	$3.1B – $9.1B	$7.9B (0%)	after a round	1,800	flat	B	0%
1 Aug 2025	$4.6B	$2.7B – $7.2B	$3.3B (-27%)	after a round	1,518	down	B	88%
1 Sep 2025	$4.5B	$2.5B – $7.3B	$3.3B (-27%)	after a round	1,517	down	B	88%
1 Oct 2025	$4.3B	$2.4B – $7.5B	$3.0B (-32%)	after a round	1,517	flat	B	81%
1 Nov 2025	$4.4B	$2.3B – $7.6B	$3.1B (-31%)	after a round	1,447	flat	C	75%
1 Dec 2025	$3.9B	$2.1B – $7.4B	$2.5B (-36%)	after a round	1,363	down	C	89%
1 Jan 2026	$3.8B	$2.0B – $7.5B	$2.4B (-37%)	after a round	1,363	down	C	89%
1 Feb 2026	$3.7B	$1.9B – $7.7B	$2.3B (-37%)	after a round	1,363	down	C	89%
1 Mar 2026	$3.6B	$1.8B – $7.8B	$2.2B (-38%)	after a round	1,363	down	C	89%
6 Mar 2026	$8.0B	$7.0B – $9.5B	$8.2B (+3%)	after a round	1,363	down	A	89%
1 Apr 2026	$8.0B	$7.0B – $9.5B	$8.1B (+1%)	after a round	1,363	down	A	89%
1 May 2026	$8.0B	$7.0B – $9.5B	$7.9B (-1%)	after a round	1,363	down	A	89%
1 Jun 2026	$8.1B	$7.0B – $9.5B	$7.9B (-3%)	after a round	1,290	down	A	86%
1 Jul 2026	$8.1B	$7.0B – $9.5B	$7.7B (-5%)	after a round	1,290	down	A	86%
1 Aug 2026	$8.1B	$7.0B – $9.5B	$7.6B (-7%)	after a round	1,290	down	A	86%
1 Sep 2026	$8.1B	$7.0B – $9.5B	$7.4B (-9%)	after a round	1,290	down	A	86%
1 Oct 2026	$8.3B	$7.0B – $9.7B	$7.6B (-9%)	after a round	1,356	down	A	79%
24 Oct 2026	$8.4B	$7.0B – $9.9B	$7.7B (-9%)	after a round	1,356	down	A	73%

Key facts about Sierra Space

Founded: 2021
Headquarters: Louisville, United States
Employees: about 1,360 -6% in a year
Total raised: $2.24B
Funding rounds: 3
Last round: Series C Mar 2026

Sierra Space funding history

Sierra Space has 3 funding rounds on record, from Nov 2021 to Mar 2026, $2.24B in total. The latest disclosed valuation is $8.00B post-money (Series C, Mar 2026).

Series C 5 Mar 2026
Led by LuminArx Capital Management; with General Atlantic, Coatue, Moore Strategic Ventures, Andalusian Private Capital.
Sources: washingtontechnology.com, sierraspace.com, spacenews.com and 3 more
$550M
$8.00B post-money
Series B 26 Sep 2023
Led by MUFG Bank, Kanematsu, Tokio Marine & Nichido Fire Insurance, Tokio Marine; with General Atlantic, Coatue, Moore Strategic Ventures, Sierra Holding Company, BlackRock Private Equity Partners, AE Industrial Partners, Vice Family Trust.
Sources: sierraspace.com, satellitetoday.com, payloadspace.com and 1 more
$290M
$5.30B post-money
Series A 19 Nov 2021
Led by General Atlantic, Coatue, Moore Strategic Ventures; with BlackRock Private Equity Partners, AE Industrial Partners, BlackRock, Stanley Druckenmiller, Vincent Viola.
Sources: sierraspace.com, axios.com
$1.40B
$4.50B post-money

Sierra Space investors

16 investors have backed Sierra Space; Coatue, General Atlantic and Moore Strategic Ventures and 5 more led at least one round.

Coatue lead, 3 rounds
General Atlantic lead, 3 rounds
Moore Strategic Ventures lead, 3 rounds
Kanematsu lead
MUFG Bank lead
Tokio Marine lead
Tokio Marine & Nichido Fire Insurance lead
BlackRock Private Equity Partners 2 rounds
Andalusian Private Capital
BlackRock
Sierra Holding Company
Stanley Druckenmiller
Vice Family Trust
Vincent Viola

What Sierra Space does

Sierra Space works in aerospace and defence, with 15 recorded offerings and customers in aerospace, defense and space exploration.

Sierra Space Corporation is an American aerospace and space technologies company engaged in the development of satellites, subsystems, spaceplanes, hypersonics, and infrastructure for national security and commercial space applications. The company also operates as a rocket engine manufacturer and private spaceflight company, with activities including the design and production of spaceflight hardware, the development of reusable spaceplanes, and the provision of propulsion systems. Sierra Space collaborates with government agencies and launch providers, and its operations include multiple facilities across the United States and a testing site at the Marshall Space Flight Center in Alabama.

Description from Veridion's company data.

Products and services

Space Systems and Subsystems Manufacturing
Satellite Manufacturing
Spaceplane Manufacturing
Hypersonics Technology Development
Propulsion System Engineering
Space Infrastructure Development
Microgravity Platform Development
On-Orbit Servicing Solutions
Environmental Systems Integration
Space Transportation Services
Space Destination Development
Space Applications Development
Surface Mount Technology Solar Array Manufacturing
Space Technology Innovation Services
Space Defense Solutions

Markets

Aerospace
Defense
Space Exploration

Technology

Surface Mount Technology for Solar Array Construction

Business model

Business-to-Business
Manufacturing
Enterprise

Industry codes (NAICS)

336414 Guided Missile and Space Vehicle Manufacturing 50% match
336411 Aircraft Manufacturing 30% match
336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing 20% match

Questions about Sierra Space

What is Sierra Space worth?

Valuation $8.4B (range $7.0B to $9.9B), as of 24 Oct 2026. The last disclosed valuation was $8.00B (Series C, Mar 2026).

Has Sierra Space raised money?

Sierra Space has 3 funding rounds on record, from Nov 2021 to Mar 2026, $2.24B in total. The latest disclosed valuation is $8.00B post-money (Series C, Mar 2026).

Who has invested in Sierra Space?

Coatue, General Atlantic, Moore Strategic Ventures, Kanematsu, LuminArx Capital Management and MUFG Bank, and 10 more. Lead investors include Coatue, General Atlantic, Moore Strategic Ventures and Kanematsu.

How many people work at Sierra Space?

About 1,360, down 6% over the last year. Headcount rose from 780 in Feb 2022 to 1,800 in Oct 2023, then fell to 1,356 in Sep 2026.

What does Sierra Space do?

Sierra Space works in aerospace and defence, with 15 recorded offerings and customers in aerospace, defense and space exploration. Its main offerings are space systems and subsystems manufacturing, satellite manufacturing and spaceplane manufacturing.

When was Sierra Space founded, and where is it based?

Sierra Space was founded in 2021 and is based in Louisville, United States. It has about 1,360 employees, down 6% over the last year.

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