Sierra Space Stock for Accredited Investors

Aerospace & Defense
By UpMarket Research  |  Last updated: July 2026
Founded 2021 HQ Louisville, US

Sierra Space is a privately held aerospace and space technology company focused on satellites, reusable spaceplanes, hypersonics, and space infrastructure. It was launched as an independent commercial space company in 2021 and is headquartered in Louisville, Colorado.

Access to pre-IPO shares is available to accredited investors through UpMarket.

Latest Price
$8B
Series C, Mar 2026, Perplexity
UpMarket Estimate
$9.4B
Based on UpMarket valuation model
Previous Price
$290M
Private financing Sep 2023

How to Invest in Sierra Space Through UpMarket

Sierra Space shares are not on public exchanges. UpMarket provides accredited investors access through secondary market transactions.

Step 01

Verify accredited investor status

Confirm eligibility under SEC Rule 501 of Regulation D. Income or net worth threshold applies.

Step 02

Create an UpMarket account

Complete KYC/AML onboarding. Typically 1–2 business days. Licensed rep assigned on signup.

Step 03

Review available Sierra Space offerings

Full offering memoranda and risk disclosures provided before any commitment is required.

Step 04

Complete subscription documents

Review and sign subscription agreement. All documents handled digitally through the platform.

Step 05

Fund your investment

Wire transfer or ACH. $50K minimum. Funds held in custodial account until close.

Pre-IPO investments are illiquid, speculative, and involve risk of total loss of capital.

$1.3B+
UpMarket has brokered over $1.3 billion in alternative investments*
*Includes principal invested and appreciation of investments originated via the UpMarket platform based on historical trade volume and valuation estimates through March 31, 2026. Of the total, approximately $301 million is managed by UpMarket Management, with the remaining originated investments managed by affiliates. Past performance is not predictive of future results.

Valuation Growth Over Time

Post-money valuation by round
Previous rounds Most recent
DateRoundPPS (split-adj.)Valuation
Mar 2026 Series C $8B
Sep 2023 Private financing $290M

Sierra Space Revenue and Growth

Annual revenue

Why Investors Are Watching Sierra Space

Growth Signal

Sierra Space raised $550M, lifting valuation to $8B

In March 2026, Sierra Space closed a $550 million Series C led by LuminArx Capital, with existing investors joining the round. The deal valued the company at $8 billion post-money and lifted total capital raised since 2021 above $2 billion.

Market Opportunity

Sierra Space says it has $3.4B in active customer contracts

In September 2023, Sierra Space said it had $3.4 billion in active contracts as a pureplay commercial space company. The company also reported the round brought total capital raised to $1.7 billion and valuation to $5.3 billion.

Competitive Moat

Sierra Space cites 30+ years of space heritage, 500+ missions

When announcing its $1.4 billion Series A in 2021, Sierra Space said it had 1,100 employees, more than 500 missions, and over 30 years of space flight heritage. The round was described as the second-largest private capital raise globally in aerospace and defense at the time.

Interested in Sierra Space stock? Fill out the form above or sign up directly. Subject to availability. Accredited investors only.

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Sierra Space Leadership Team

Tom Vice
CEO
Janet Kavandi
President
Jeff Babione
COO

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Sierra Space Stock FAQ

No. As of March 2026, Sierra Space is a private company and does not trade on any public stock exchange. Accredited investors can access Sierra Space shares through UpMarket, a FINRA-registered broker-dealer that specializes in pre-IPO investments.

Sierra Space does not have a public stock price because it is privately held. The most recent known share price comes from its last funding round. Pre-IPO share prices on the secondary market may differ from the last round price depending on supply, demand, and market conditions.

Yes. Accredited investors can indicate interest in Sierra Space shares through UpMarket by filling out the form on this page or creating an account at upmarket.co. All pre-IPO offerings are subject to availability and require a $50,000 minimum investment. UpMarket is a FINRA-registered broker-dealer and has brokered more than $500M in alternative investments since 2019.

Pre-IPO investments carry significant risks. Sierra Space shares are illiquid, meaning there is no public market to sell them quickly. There is no guaranteed exit timeline or return. The investment is speculative in nature, and investors should be prepared for the possibility of total loss. Valuations of private companies can fluctuate substantially between funding rounds. Investors should consult their financial advisor and review all offering documents before investing.

In a pre-IPO transaction, accredited investors purchase shares from existing shareholders (such as employees, early investors, or other holders) through secondary market platforms. The company itself does not issue new shares in these transactions. UpMarket facilitates these trades as a FINRA-registered broker-dealer, handling compliance, documentation, and settlement on behalf of both parties.

There are two primary exit paths for pre-IPO holdings: selling your shares on the secondary market to another buyer, or holding until the company completes an IPO or is acquired. Both paths are subject to transfer restrictions, company approval (right of first refusal), and market conditions. The timing of any exit is unpredictable, and investors should plan for a multi-year holding period.

The minimum investment for most pre-IPO offerings on UpMarket is $50,000. This amount may vary depending on the specific offering and share availability. There are no fees to create an UpMarket account or browse available investments. Investors only pay transaction-related fees when they complete an investment.

UpMarket's valuation estimate of is derived from a proprietary model that incorporates multiple data sources: funding round data (Caplight), revenue estimates (Sacra), secondary market pricing, and public company comparables. The model applies a private company discount to the public comp multiple to account for illiquidity and information asymmetry. This estimate is not investment advice and may differ substantially from the price at which shares actually trade.

Sierra Space develops satellites, reusable spaceplanes, hypersonics, and space infrastructure, with $748.6M in 2025 revenue and an $8B valuation after its $550M Series C — accredited investors can access Sierra Space stock through UpMarket.

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