# Jeff Crusey > Jeff Crusey is a pre-seed investor at Blacklake backing Manufacturing and Artificial Intelligence. See 42 investments, check sizes, portfolio. Updated Aug 2026. - Type: Angel Investor - Fund: [Blacklake](https://shizune.co/investors/profile/blacklake-4b87) - Location: London, United Kingdom - Total investments: 42 - Last investment: Apr 2026 - Lead investor: 5% - Last updated: Aug 2026 - LinkedIn: https://www.linkedin.com/in/jeffcrusey/ - X (Twitter): https://twitter.com/JeffCrusey - Website: https://seraphim.vc/ Jeff Crusey is a pre-seed investor at Blacklake in London focused on Manufacturing and Artificial Intelligence. Jeff Crusey ## Round sizes | Stage | Round size | | --- | --- | | Seed | $1M–$9M | | Pre-Seed | $2.8M–$5.4M | ## Investment focus ### Industry | Industry | Investments | Share | | --- | --- | --- | | Manufacturing | 10 | 24% | | Artificial Intelligence | 8 | 19% | | Information Technology | 7 | 17% | | Software | 6 | 14% | | Robotics | 4 | 10% | 75 industries tracked in total. ### Stage | Stage | Investments | Share | | --- | --- | --- | | Pre-Seed | 10 | 24% | | Seed | 9 | 21% | | Series A | 7 | 17% | | Funding Round | 5 | 12% | | Series C | 2 | 5% | 10 stages tracked in total. ### Country | Country | Investments | Share | | --- | --- | --- | | United States | 26 | 62% | | United Kingdom | 9 | 21% | | Italy | 1 | 2% | | Denmark | 1 | 2% | ## Investments | Company | Description | Amount | Stage | Date | Website | | --- | --- | --- | --- | --- | --- | | Mulberry Industries | Mulberry Industries manufactures and supplies permanent magnets and advanced electrical systems for automotive and robotics industries. | | Seed | Apr 02, 2026 | | | Femtovox | Surgical platform | | Pre-Seed | Mar 01, 2026 | | | Seasats | Seasats autonomous ocean vehicles provide remote monitoring and data collection for defense and commercial customers at a fraction of the cost, logistics, and risk compared to traditional methods. | $20M | Series A | Feb 17, 2026 | | | Monumental Labs | Monumental Labs is building AI-enabled robotic stone carving factories. | $9M | Seed | Jul 08, 2025 | | | OpenLight | OpenLight is a manufacturing industry. | $3.5M | Seed | Feb 04, 2025 | | | Portal Space Systems | Portal Space Systems is a full-service space manoeuvrability solution that delivers tactical response and dynamic space. | | Seed | Feb 04, 2025 | | | Amali Systems | Nuclear | | Pre-Seed | Nov 30, 2024 | | | Bea Fertility | Bea Fertility is a monthly subscription program that provides users with at-home fertility treatment and ovulation tracking. The kits offered by Bea Fertility include an intracervical insemination device, as well as pregnancy tests, fertility trackers, and sperm donation pots. Bea Fertility democratizes effective and affordable fertility treatmentfor individuals and couples who are having difficulty conceiving. | | Convertible Note | Aug 31, 2024 | | | Perceptive Space | Perceptive Space is developing an AI-powered space weather platform that delivers predictions and decision intelligence to ensure safe and reliable operations in challenging space environments. By providing hyperlocal space weather forecasts and asset-specific insights into space weather impacts, Perceptive Space aims to help satellite operatorsand launch providers extend mission lifetimes and reduce operational downtimes and service interruptions. | $2.8M | Pre-Seed | Aug 06, 2024 | | | Perceptive Space | Perceptive Space is developing an AI-powered space weather platform that delivers predictions and decision intelligence to ensure safe and reliable operations in challenging space environments. By providing hyperlocal space weather forecasts and asset-specific insights into space weather impacts, Perceptive Space aims to help satellite operatorsand launch providers extend mission lifetimes and reduce operational downtimes and service interruptions. | | Pre-Seed | Jul 01, 2024 | | 10 of 42 investments shown. ## Co-investors - [Space.VC](https://shizune.co/investors/profile/space-vc) — VC Fund, 3 deals together - [MaC Venture Capital](https://shizune.co/investors/profile/mac-venture-capital) — VC Fund, 2 deals together - [Mythos Ventures](https://shizune.co/investors/profile/mythos-ventures) — VC Fund, 2 deals together - [AIN Ventures](https://shizune.co/investors/profile/academy-investor-network) — VC Fund, 1 deal together - [BlueYard Capital](https://shizune.co/investors/profile/blueyard-capital) — VC Fund, 1 deal together - [Bossa Invest](https://shizune.co/investors/profile/bossanova-investimentos) — VC Fund, 1 deal together ## About Blacklake VC Fund 1 contacts available at Blacklake. | Name | Title | Profile | | --- | --- | --- | | Jeff Crusey | EVP of Technology & Acquisition | https://shizune.co/investors/profile/jeff-crusey | ## Similar investors ### Similar industry - [SOSV](https://shizune.co/investors/profile/sosv) — VC Fund - [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund - [Bpifrance](https://shizune.co/investors/profile/bpifrance) — VC Fund ### Similar stage - [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund - [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund - [Everywhere Ventures](https://shizune.co/investors/profile/everywhere-ventures) — VC Fund ### Similar country - [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund - [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund - [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund ## Featured in investor lists - [Manufacturing Angel Investors in United States](https://shizune.co/investors/manufacturing-angel-investors-united-states) - [Manufacturing Angel Investors](https://shizune.co/investors/manufacturing-angel-investors) - [Climate Angel Investors in United States](https://shizune.co/investors/climate-angel-investors-united-states) ## FAQ ### What does Jeff Crusey invest in? Jeff Crusey invests primarily in Manufacturing, Artificial Intelligence and Information Technology startups, most often at Pre-Seed and Seed stage. Most of the 42 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 Jeff Crusey's check size? Jeff Crusey typically joins rounds of $1M–$9M at Seed and $2.8M–$5.4M at Pre-Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Jeff Crusey participates in. ### When did Jeff Crusey last invest? The most recent investment recorded for Jeff Crusey closed in Apr 2026. Shizune tracks 42 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. # About Shizune Shizune.co is an investor database. Core features: - 48,091 startup investors (angels, VCs, accelerators, and others) - Email, phone, LinkedIn (for intros), socials, and other contact data - Updated daily from public funding news - CSV and Excel export The User can access the full database FOR FREE after signing up: shizune.co