Big round · 16 September 2026

Impulse Space raises $308M Series D led by Emergence Capital

By Millionrounds ResearchPublished 17 September 2026Updated 22 October 2026

Impulse Space, based in United States, has raised $308M in a Series D led by Emergence Capital, announced on 16 September 2026. 6 other investors joined. It is the 166th largest equity round we recorded in the twelve months to that date, and the 20th largest Series D of 82. The median Series D over the same period was $158M, so this one is 2.0 times that. Its previous round on record was a Series D of $500M in June 2026, 3 months earlier.

Raised$308M4 sources reported it
StageSeries D3 earlier rounds on record
Investors71 named as lead
Where USUnited States

Aerospace & SpaceLogistics

How big is it?

Against every equity round we recorded in the twelve months to 16 September 2026. Ranks count companies, so the same raise reported twice is counted once.

#166equity round of the last twelve months
#20Series D of 82 in that time
#115round in United States, of 1,126
This round$308M
Median Series D$158M

2.0 times the median Series D of the last twelve months.

Who invested

Also in the round

Funding history

  1. September 2026Series D$308M
  2. June 2026Series D$500M
  3. June 2025Growth$300M
  4. October 2024Series B$150M

$1.3B raised across the 4 rounds we hold.

Reported by

  1. TechStartups16 September
  2. bizwnews.com22 October
  3. mobile.newsis.com22 October
  4. ajunews.com22 October

The round's figures come from these reports; each link opens the original.

Other big rounds that week

DD-Robotics$400M Series Cbarq$330M Series AExein$270M GrowthEUCLYD$231M Series AFactory$200M GrowthPProfound$180M Series D
The companyImpulse Space on Millionrounds→Weekly roundupWeek of 14 September→Monthly roundupSeptember 2026→