# Adam Back, CEO at Blockstream

> Adam Back, CEO at Blockstream. 2 investments on record. The rounds they were named in and the filings that name them, each with its source.

Source: https://millionrounds.com/person/adam-back (Millionrounds; every figure on the page links to its filing or article)

MT · Angel

# Adam Back

CEO at Blockstream

Latest rounds

- **Capital B** Round · $17.8M May 2026
- **Capital B** Round · $2.6M Aug 2025 · led

Backs *Big Data & Analytics* *AI* *Web3 & Crypto*

Profile summary

- **Rounds named:** 2 last May 2026
- **Filings:** 1 with regulators
- **Podcasts:** 1 mentions

What this record rests on

- ✓ **Named in rounds** 2 rounds name them
- ✓ **On filings** 1 filing with a regulator
- **Linked to a firm** No firm on record
- **Claimed** Not claimed yet

Titles come from filings their firm signed.

[Correct or remove](https://millionrounds.com/corrections?person=adam-back)[Is this you? Claim it](https://millionrounds.com/claim?person=adam-back)

## Rounds they were named in

- **Rounds:** 2
- **Led:** 1
- **Disclosed:** $20.4M
- **Active:** 2025–26

2026

- [Capital B](https://millionrounds.com/company/capital-b) *Round* **$17.8M** *FR* May 2026 Joined · +4 investors

2025

- [Capital B](https://millionrounds.com/company/capital-b) *Round* **$2.6M** *FR* Aug 2025 Led

By stage

- Round **2**

What they backed

Big Data & Analytics **2** AI **2** Web3 & Crypto **2**

Alongside

- [Blockstream Capital Partners *1*](https://millionrounds.com/fund/blockstream-capital-partners)
- [Marex *1*](https://millionrounds.com/fund/marex)
- [Maxim Group *1*](https://millionrounds.com/fund/maxim-group)
- [TOBAM *1*](https://millionrounds.com/fund/tobam)

Rounds where a report named this person rather than a firm, matched on name: read it as a strong hint, not proof, since people share names.

## Where they are named on record

Filings

- SEC Form D · Company raising **BlockStream Corp** Director and Chief Scientist since 2014

Each row is a document a firm filed with a regulator: somebody signed it, and it carries a date.

## Hear them before you pitch them

### Mentioned in

Episodes that name Adam Back in their description, which is not the same as being on them.

- [TBPN](https://millionrounds.com/podcasts/tbpn) · 9 Apr 2026 · 2h 30m Jassy's Shareholder Letter, The Next AI Capability, 𝕏 Timeline Reactions | Saagar Enjeti, Joe Weisenthal, Kesava Kirupa Dinakaran, Brian Manning, Cobi Blumenfeld-Gantz, Changpeng Zhao, Tal Hoffman With [Brian Manning](https://millionrounds.com/person/brian-manning) Mentions [Adam Back](https://millionrounds.com/person/adam-back) About this episode (01:25) - Jassy's Shareholder Letter (23:24) - AI in CyberSecurity (27:56) - 𝕏 Timeline Reactions (40:41) - Saagar Enjeti, an American journalist and political commentator, co-hosts the independent news program "Breaking Points" alongside Krystal Ball. In the conversation, he discusses… More on the show's page Listen on Apple PodcastsThe show's page

Episodes of [the shows we follow](https://millionrounds.com/podcasts), matched by name. Not them? [Tell us](https://millionrounds.com/corrections?person=adam-back).

## Find people like Adam

Filter every partner and angel by firm, kind, market and whether we watched them invest. Free with an account.

Search people[How we know what we know](https://millionrounds.com/methodology)