Funding round
Impulse Space Series D
Impulse Space, which works in in-space mobility technology development in Redondo Beach, raised $500M in a Series D round announced on 2 Jun 2026, led by 137 Ventures and Banner VC, at a $4.26B post-money valuation. 5 firms took part, 5 of them already investors. It is Impulse Space's fifth venture round on record; the one before was a Series C in Jun 2025.
$500M
Amount raised
$4.26B
Post-money valuation
$3.76B pre-money
5
Investors
2 leads
12%
Stake sold
new money over the post-money
Valuation
What this round says about the price
This round priced Impulse Space at $4.26B after the new money. The $500M bought investors about 12% of the company. It came 12 months after Impulse Space's Series C. It is 49% of the $1.01B Impulse Space has raised in the venture rounds on record. No later venture round is on record for Impulse Space.
Impulse Space's funding rounds
Impulse Space has 5 venture rounds on record and 1 other deal. This one is highlighted.
- Seed 29 Mar 2022, led by Founders Fund $20M
- Other not a venture round 17 Jun 2022, led by Lux Capital $10M
- Series A 24 Jul 2023, led by RTX $45M
- Series B 1 Oct 2024, led by Founders Fund $150M
- Series C 3 Jun 2025, led by Linse Capital $300M
- Series D this round 2 Jun 2026, led by 137 Ventures and Banner VC $500M$4.26B post-money
Investors
Who put money in
137 Ventures and Banner VC led the round with 3 other firms. 137 Ventures, Banner VC, Founders Fund and Lux Capital and 1 more had backed Impulse Space before.
Lead investors
- 137 Ventures backs 25 venture-backed companies existing investor
- Banner VC existing investor
Also in the round
- Founders Fund backs 368 venture-backed companies existing investor
- Lux Capital backs 194 venture-backed companies existing investor
- backs 13 venture-backed companies existing investor
Use of proceeds
What the money is for
According to the announcement, the money goes to hiring, product development, geographic expansion, scaling operations and working capital.
- Hiring
- Product development
- Geographic expansion
- Scaling operations
- Working capital
Comparable rounds
How it compares
14 Series D rounds in Aerospace and Defence within a year either side disclosed an amount; the median was $505M, and this round was close to the median. The closest in time, other companies' Series D rounds in Aerospace and Defence:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| Isar Aerospace Aerospace and Defence | 9 Jun 2026 | $310M | $2.30B | not named |
| Aerospace and Defence | 19 Jun 2026 | $195M | not disclosed | not named |
| Quantum Systems Aerospace and Defence | 2 Jul 2026 | $1.20B | $8.00B | Blackstone and Noteus |
| K2 Space Aerospace and Defence | 30 Jul 2026 | $500M | $6.80B | Kleiner Perkins and ICONIQ |
| Hadrian Aerospace and Defence | 6 Aug 2026 | $1.37B | $7.87B | WCM Investment Management and Washington Harbour |
| True Anomaly Aerospace and Defence | 28 Apr 2026 | $650M | $2.20B | Eclipse and Riot Ventures |
| Saronic Technologies Aerospace and Defence | 31 Mar 2026 | $1.75B | $9.25B | Kleiner Perkins |
| Varda Space Industries Aerospace and Defence | 30 Sep 2026 | $251M | $1.60B | Lux Capital and Natural Capital |
Sources
Where this comes from
Reported by 6 sources.
Questions
Frequently asked
How much did Impulse Space raise in its Series D round?
Impulse Space raised $500M in its Series D round, announced in Jun 2026.
Who led Impulse Space's Series D round?
137 Ventures and Banner VC led it, with Founders Fund, Lux Capital and Linse Capital.
What was Impulse Space's valuation at the Series D round?
$4.26B post-money ($3.76B pre-money).
How does it compare with other Series D rounds in Aerospace and Defence?
14 Series D rounds in Aerospace and Defence within a year either side disclosed an amount; the median was $505M, and this round was close to the median.