CEO Tom MuellerFounded 2021HQ 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.
Access to pre-IPO shares is available to accredited investors through UpMarket.
Latest Price
$1.8B
Series C, Jun 2025, Perplexity
UpMarket Estimate
$2.0B
Based on UpMarket valuation model
Previous Price
Series B Oct 2024
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 roundsMost recent
Date
Round
PPS (split-adj.)
Valuation
Jun 2025
Series C
$1.8B
Oct 2024
Series B
Jul 2023
Series A
Jun 2022
Note
2022
Seed
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.
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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 $2.0B 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 builds in-space mobility systems, including orbital transfer vehicles and propulsion hardware, with $34.5M in 2024 revenue and a $2.0B valuation, after raising a $500M Series D to scale hiring. Accredited investors can access Impulse Space stock through UpMarket.