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

> 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.

Source: https://millionrounds.com/news/rounds/island-series-f-2026-09 (Millionrounds; every figure on the page links to its filing or article)

Raised **$400M** 7 sources reported it

Stage **Series F** 2 earlier rounds on record

Investors **14** 1 named as lead

Where **US** United States

AI Cybersecurity Enterprise 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.

**#136** equity round of the last twelve months

**#7** Series F of 20 in that time

**#95** round 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

- [**Evolution Equity Partners** 6 rounds in the last twelve months *Led*](https://millionrounds.com/fund/evolution-equity-partners)

Also in the round

- [Sequoia Capital](https://millionrounds.com/fund/sequoia-capital)
- [Insight Partners](https://millionrounds.com/fund/insight-venture-partners)
- [Coatue](https://millionrounds.com/fund/coatue-management)
- [Georgian](https://millionrounds.com/fund/georgian)
- [Geodesic Capital](https://millionrounds.com/fund/geodesic-capital)
- [Cisco Investments](https://millionrounds.com/fund/cisco-investments)
- [Prysm Capital](https://millionrounds.com/fund/prysm-capital)
- [G Squared](https://millionrounds.com/fund/g-squared)
- [J.P. Morgan Growth Equity Partners](https://millionrounds.com/fund/j-p-morgan-growth-equity-partners)
- [Alta Park Capital, LP](https://millionrounds.com/fund/alta-park-capital-lp)
- [Ajvc](https://millionrounds.com/fund/ajvc)
- [Squarepoint Capital](https://millionrounds.com/fund/squarepoint-capital)
- [Dmitri Alperovitch](https://millionrounds.com/fund/dmitri-alperovitch)

## Funding history

- September 2026 Series F **$400M**
- September 2025 Venture **Undisclosed**
- March 2025 Series E **$250M**

$650M raised across the 3 rounds we hold.

## Reported by

- Evolution Equity Partners 24 September
- TechStartups 24 September
- Crunchbase News 25 September
- Entrackr 29 October
- Indian Startup News 29 October
- Indian Startup Times 29 October
- Bharat Fast 30 October

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

## Other big rounds that week

[**Basecamp Research** $140M Series C](https://millionrounds.com/news/rounds/basecamp-research-series-c-2026-09)[V **Verda** $189M Series B](https://millionrounds.com/news/rounds/verda-series-b-2026-09)[**Angle Health** $600M Series C](https://millionrounds.com/news/rounds/angle-health-series-c-2026-09)[**Rainmaker** $100M Series B](https://millionrounds.com/news/rounds/rainmaker-series-b-2026-09)

[The company **Island on Millionrounds** *→*](https://millionrounds.com/company/island)[Weekly roundup **Week of 21 September** *→*](https://millionrounds.com/news/weekly/2026-09-21)[Monthly roundup **September 2026** *→*](https://millionrounds.com/news/monthly/2026-09)

**How this article is made**

We write one for every equity round of $100M or more that at least two sources reported. It is put together from our record of rounds, not rewritten from the reports: the ranks and medians count every equity round we read in the twelve months to the round's date. [How we read rounds](https://millionrounds.com/methodology) · [Report a mistake](https://millionrounds.com/corrections)