Big round · 24 September 2026

Island raises $400M Series F led by Evolution Equity Partners

By Millionrounds ResearchPublished 25 September 2026Updated 30 October 2026

Island, based in United States, has raised $400M in a Series F led by Evolution Equity Partners, announced on 24 September 2026. 13 other investors joined. It is the 136th largest equity round we recorded in the twelve months to that date, and the 7th largest Series F of 20. Its previous round on record was a venture round in September 2025, 13 months earlier.

Raised$400M7 sources reported it
StageSeries F2 earlier rounds on record
Investors141 named as lead
Where USUnited States

AICybersecurityEnterprise Software

How big is it?

Against every equity round we recorded in the twelve months to 24 September 2026. Ranks count companies, so the same raise reported twice is counted once.

#136equity round of the last twelve months
#7Series F of 20 in that time
#95round in United States, of 1,133
This round$400M
Median Series F$300M

1.3 times the median Series F of the last twelve months.

Who invested

Also in the round

Funding history

  1. September 2026Series F$400M
  2. September 2025VentureUndisclosed
  3. March 2025Series E$250M

$650M raised across the 3 rounds we hold.

Reported by

  1. Evolution Equity Partners24 September
  2. TechStartups24 September
  3. Crunchbase News25 September
  4. Entrackr29 October
  5. Indian Startup News29 October
  6. Indian Startup Times29 October
  7. Bharat Fast30 October

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

Other big rounds that week

Basecamp Research$140M Series CVVerda$189M Series BAngle Health$600M Series CRainmaker$100M Series B
The companyIsland on Millionrounds→Weekly roundupWeek of 21 September→Monthly roundupSeptember 2026→