# Armadin raises $256M Series B led by Andreessen Horowitz

> Armadin, based in United States, has raised $256M in a Series B led by Andreessen Horowitz and Accel, announced on 1 October 2026. 8 other investors joined.

Source: https://millionrounds.com/news/rounds/armadin-series-b-2026-10 (Millionrounds; every figure on the page links to its filing or article)

Raised **$256M** 4 sources reported it

Stage **Series B** 1 earlier round on record

Investors **10** 2 named as lead

Where **US** United States

AI Cybersecurity

## How big is it?

Against every equity round we recorded in the twelve months to 1 October 2026. Ranks count companies, so the same raise reported twice is counted once.

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

**#27** Series B of 395 in that time

**#137** round in United States, of 1,135

This round **$256M**

Median Series B **$50M**

5.1 times the median Series B of the last twelve months.

## Who invested

- [**Andreessen Horowitz** 309 rounds in the last twelve months *Led*](https://millionrounds.com/fund/andreessen-horowitz)
- [**Accel** 121 rounds in the last twelve months *Led*](https://millionrounds.com/fund/accel)

Also in the round

- [8VC](https://millionrounds.com/fund/8vc)
- [Menlo Ventures](https://millionrounds.com/fund/menlo-ventures)
- [Kleiner Perkins](https://millionrounds.com/fund/kleiner-perkins)
- [Google Ventures](https://millionrounds.com/fund/gv)
- [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures)
- [Redpoint](https://millionrounds.com/fund/redpoint)
- [In-Q-Tel](https://millionrounds.com/fund/iqt)
- [Ballistic Ventures](https://millionrounds.com/fund/ballistic-ventures)

## Funding history

- October 2026 Series B **$256M**
- March 2026 Seed **$190M**

$446M raised across the 2 rounds we hold.

## Reported by

- Firms' own news pages
- Leap Ventures 1 October
- TechStartups 1 October
- startupi.com.br 3 November

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

## Other big rounds that week

[**Simple Energy** $180M Series C](https://millionrounds.com/news/rounds/simple-energy-series-c-2026-09)[**EliseAI** $350M Growth](https://millionrounds.com/news/rounds/eliseai-growth-round-2026-09)[**Jeeves** $110M Series C](https://millionrounds.com/news/rounds/jeeves-series-c-2026-09)[**Instinct** $1.0B Series C](https://millionrounds.com/news/rounds/instinct-series-c-2026-09)[**Quartermaster** $140M Series B](https://millionrounds.com/news/rounds/quartermaster-series-b-2026-09)

[The company **Armadin on Millionrounds** *→*](https://millionrounds.com/company/armadin)[Weekly roundup **Week of 28 September** *→*](https://millionrounds.com/news/weekly/2026-09-28)[Monthly roundup **October 2026** *→*](https://millionrounds.com/news/monthly/2026-10)

**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)