Impulse Space Stock for Accredited Investors

Aerospace & Defense
By UpMarket Research  |  Last updated: September 2026
CEO Tom Mueller Founded 2021 HQ Redondo Beach, California, US

Impulse Space is a private aerospace company that builds in-space mobility systems, including orbital transfer vehicles and propulsion hardware. It serves commercial, civil, and government missions for moving payloads between orbits quickly and reliably. In September 2026, Impulse Space raised $308 million in its Series D at a $5.4 billion post-money valuation, led by 137 Ventures, BANNER VC, DFJ Growth, Linse Capital, Lux Capital and Valor Equity Partners (Reuters and Bloomberg).

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

Last Reported Valuation
$5.4B
Series D, 09/16/26, Reuters and Bloomberg
UpMarket Estimate
$6.35B
Based on UpMarket valuation model
Previous Round Valuation
$4.26B
Series D, Jun 2026

How to Invest in Impulse Space Through UpMarket

Impulse 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 Impulse 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.

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Valuation Growth Over Time

Post-money valuation by round
Previous rounds Most recent
DateRoundAmount raisedValuation
Sep 2026 Series D $308M $5.4B
Jun 2026 Series D $4.26B

Impulse Space's most recent reported round is its Series D extension, announced September 16, 2026. It raised $308 million at a reported post-money valuation of $5.4 billion, led by 137 Ventures, BANNER VC, DFJ Growth and Linse Capital. Source: Reuters and Bloomberg. Data as of September 27, 2026.

Impulse Space Revenue and Growth

Annual revenue

Why Investors Are Watching Impulse Space

Growth Signal

Impulse Space raises $500M Series D to scale hiring

Impulse Space announced a $500 million Series D on June 2, 2026, co-led by 137 Ventures and BANNER VC. The company said the capital will expand team size and manufacturing capacity as demand for post-launch mobility grows.

Competitive Moat

Total capital tops $1B as Impulse builds vertical stack

The June 2026 Series D brought Impulse Space's total capital raised to over $1 billion. The company positions itself as an in-space mobility leader, supporting its stack of transfer vehicles, propulsion, and manufacturing.

Market Opportunity

Impulse targets post-launch mobility in a growing space economy

Impulse says its vehicles move payloads across and between orbits, enabling rapid, reliable, affordable mobility for satellites after launch. The company frames this as infrastructure for the broader space economy and a rapidly growing demand base.

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

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Impulse Space Leadership Team

Tom Mueller
CEO

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Impulse Space Stock FAQ

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

Impulse 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 Impulse 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 alternative investments since 2019.

Pre-IPO investments carry significant risks. Impulse 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 $6.35B 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.

Impulse Space was valued at $5.4B in its September 2026 Series D. Accredited investors can request Impulse Space access through UpMarket.

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