Impulse Space
PrivateLast Round
Series D
Extension
Sep 16, 2026
Est. Valuation
$5.4B
Total Funding Raised
$1.34B
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Impulse Space is an aerospace company that develops in-space transportation technology and services, including orbital transfer vehicles and propulsion systems, to enable satellite delivery to various orbits.
Sector
Frontier & Industrial Tech
Verticals
Space Technology, Defense Tech
Business Model
B2B
Customer Profile
Government Contracts, Usage-Based SaaS, Hardware Sales
AI Layer
Application
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Impulse Space Comparables
Compare Impulse Space with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Momentus | 87% | |
| Firefly Aerospace | 85% | |
| Quantum Space | 80% |
Impulse Space Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series D Extension | Sep 16, 2026 | ||||
| Series D | Jun 2, 2026 | ||||
| Series C | Jun 2, 2025 | ||||
| Series B | Sep 30, 2024 | ||||
| Series A | Jul 24, 2023 | ||||
Seed Extension | Jun 17, 2022 |
Secondary Market Activity
Bids, offers, and trades by month
| Operation | Date | Price | Size | Share Class | Structure |
|---|---|---|---|---|---|
BID |
Impulse Space Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Linse Capital | Series D, Series C |
| Overmatch | Series B |
| Tamar Capital | Series B, Series C |
| GC Capital | Series A |
| Elysium Venture Capital | Series B |
| Balerion Space Ventures | Series B, Series C |
| Founders Fund | Series A, Series D, Series C, Seed, Series B |
Market signals
Structured signals derived from secondary market and firmographic data.
- Oct 5, 2026
Grew 15% QoQ, from 491 to 565 employees.
- Sep 16, 2026
$308M round with participation from Valor Equity Partners and 137 Ventures.
Recent news
Latest coverage and updates
- receives_financingSep 16, 2026
Impulse Space, Inc. received financing of $308M in Series D on Sep 16th '26.
- receives_financingSep 16, 2026
Impulse Space, Inc. received financing of $308M in Series D1 on Sep 16th '26.
- receives_financingSep 16, 2026
Impulse Space, Inc. received financing of $500M in Series D1 on Jun 1st '26.
- has_valuationSep 16, 2026
Impulse Space, Inc. had valuation of $4.26B on Jun 1st '26.
- receives_financingSep 16, 2026
Impulse Space, Inc. received financing of $808M in Series D on Sep 16th '26.
Impulse Space Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
Request accessAppears On
Curated lists and screens where this company is featured.
Frequently Asked Questions
Common questions about Impulse Space's valuation, stock price, and market status.
Is Impulse Space a public or private company?
Impulse Space is a private company.
What is the current stock price of Impulse Space?
Impulse Space is a private company, so its shares have no public market price. Caplight tracks Impulse Space's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Impulse Space worth (valuation)?
Impulse Space's valuation is estimated at $5.4B based on funding round data.
Can I buy Impulse Space stock?
Impulse Space shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Impulse Space's last funding round?
Impulse Space's most recent funding round was Series D Extension on September 16, 2026.
Who are the main investors in Impulse Space?
Key investors in Impulse Space include Linse Capital, Founders Fund, Lux Capital, 137 Ventures, RTX Ventures.
Will Impulse Space IPO soon?
No public IPO plans have been announced for Impulse Space.
How can I track Impulse Space secondary market activity?
Caplight tracks bids, offers, and trades in Impulse Space's shares on secondary markets.