# MacBrennan Peet

> MacBrennan Peet is a seed investor in New York backing Web3 and Blockchain. See 4 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: Angel Investor
- Location: New York, United States
- Total investments: 4
- Last investment: May 2025
- Lead investor: 0%
- Last updated: Aug 2026
- X (Twitter): https://twitter.com/mrgnalt
- Website: https://macbrennan.cc

MacBrennan Peet is a seed investor in New York focused on Web3 and Blockchain. MacBrennan Peet is the Co-Founder of MRGN Group.

## Contacts

5 contacts available for MacBrennan Peet: work email, personal email, work phone, personal phone and socials. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-email/macbrennan-peet?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $2.1M–$5.5M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Web3 | 2 | 50% |
| Blockchain | 2 | 50% |
| Finance | 1 | 25% |
| Financial Services | 1 | 25% |
| Decentralized Finance (DeFi) | 1 | 25% |

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 3 | 75% |
| Pre-Seed | 1 | 25% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Fermi Labs | Fermi Labs is a studio that focuses on researching and developing Web3 technologies. | $1.2M | Pre-Seed | May 21, 2025 | https://x.com/FermiLabs |
| Exponent Finance | Exponent Finance is a Solana Network DeFi fixed price market that creates time-locked tokens that can generate set returns or be traded for yield. | $2.1M | Seed | Nov 21, 2024 | https://x.com/exponentfinance?mx=2 |
| Arcium | Arcium is a parallelized confidential computing network that provides trustless, verifiable and efficient encrypted computation. Arcium implements Multiparty Computation Execution Environments (MXEs) that combine MPC, homomorphic encryption, zero-knowledge proofs, and more to enable computation on encrypted data. | $5.5M | Seed | May 09, 2024 | https://arcium.com |
| Sanctum | Sanctum offers the ability to launch millions of new LSTs utilizing solana. |  | Seed | Apr 03, 2024 | https://www.sanctum.so |

4 of 4 investments shown.

## Co-investors
- [Solana Ventures](https://shizune.co/investors/profile/solana-capital) — VC Fund, 2 deals together
- [Big Brain Holdings](https://shizune.co/investors/profile/big-brain-holdings) — VC Fund, 1 deal together
- [BOOGLE Syndicate](https://shizune.co/investors/profile/boogle-syndicate) — VC Fund, 1 deal together
- [Cherry Ventures](https://shizune.co/investors/profile/cherry-ventures) — VC Fund, 1 deal together
- [CMS Holdings](https://shizune.co/investors/profile/cms-holdings) — VC Fund, 1 deal together
- [Coinbase Ventures](https://shizune.co/investors/profile/coinbase-ventures) — VC Fund, 1 deal together

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## FAQ

### What does MacBrennan Peet invest in?

MacBrennan Peet invests primarily in Web3, Blockchain and Finance startups, most often at Seed and Pre-Seed stage. Most of the 4 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is MacBrennan Peet's check size?

MacBrennan Peet typically joins rounds of $2.1M–$5.5M at Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds MacBrennan Peet participates in.

### How do I contact MacBrennan Peet?

Public channels for MacBrennan Peet include X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### When did MacBrennan Peet last invest?

The most recent investment recorded for MacBrennan Peet closed in May 2025. Shizune tracks 4 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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