Oisin Hanrahan
Angel Investor
New York, United States
Oisin Hanrahan is a seed investor in New York focused on SaaS and FinTech. Oisin Hanrahan is based out of New York, New York and is the CEO and Founder of Keychain. Oisin previously worked at Angi as a Chief Executive Officer. Oisin Hanrahan attended the Trinity College Dublin.
- Total investments:
- 7
- Last investment:
- Lead investor:
- 14%
Last updated:
For AI agents: llms.txt
Industries Oisin Hanrahan invests in
Stages Oisin Hanrahan invests in
Countries Oisin Hanrahan invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $1.8M–$4M
- Pre-Seed
- $500k–$1M
Investment Focus
Industry
- SaaS 1 (14%)
- FinTech 1 (14%)
- Internet 1 (14%)
- Software 1 (14%)
- Insurance 1 (14%)
Stage
- Seed 3 (43%)
- Pre-Seed 2 (29%)
- Series C 1 (14%)
Country
- United States 4 (57%)
- Ireland 1 (14%)
- United Kingdom 1 (14%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Block Renovation is a renovation platform that combines architect-grade design, construction labor, and materials into a streamlined renovation experience. Block’s mission is to give homeowners a better way to improve the spaces they live in, and to give contractors a better way to work. Founded by Koda Wang and Luke Sherwin, Block simplifies acomplex and convoluted process and delivers an intuitive experience for completing a beautiful home renovation. | $50M / Series C / Nov 09, 2021 | ||
| CheckStep provides a AI-powered Trust & Safety and UGC management software to online platform worldwide. It enables company to manage the full policy management life-cycle. | $1.8M / Seed / Jun 28, 2021 | ||
| LuckyTruck is a modern, all-in-one solution that puts buying, selling, and managing commercial trucking insurance into a simple and elegant digital platform experience. | $500K / Pre-Seed / Feb 22, 2021 | ||
| Harness Wealth is the next generation wealth management solution created for builders - individuals founding, scaling, and investing in businesses. It is a holistic wealth platform that seeks to make bespoke financial advice accessible, intuitive, and valuable through a combination of innovative technology and exceptional advisory firms. | $4M / Seed / Dec 14, 2018 | ||
| Advisable is a freelance marketplace that helps skilled and ambitious people find work. The company's platform matches organizations with freelance marketing specialists, allowing clients to identify, screen, and hire marketing specialists. | $1M / Pre-Seed / Oct 04, 2018 | ||
| Hyperscience is a technology company that develops AI-based enterprise software designed to automate office work processes.The software uses machine learning to process structured and semi-structured documents, automate data entry, extract key details from invoices, and reconcile compliance-driven data to enable businesses to streamline complexprocesses automatically and increase productivity. It aims to modernize mission-critical processes and operations for organizations and governments.Krasimir Marinov, Peter Brodsky, and Vladimir Tzankov founded the company in 2014 and headquartered in New York, New York. | Seed / Jun 01, 2014 | ||
| See all 7 investments → | |||
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FAQ
What does Oisin Hanrahan invest in?
Oisin Hanrahan invests primarily in SaaS, FinTech and Internet startups, most often at Seed and Pre-Seed stage. Most of the 7 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 Oisin Hanrahan's check size?
Oisin Hanrahan typically joins rounds of $1.8M–$4M at Seed and $500k–$1M 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 Oisin Hanrahan participates in.
How do I contact Oisin Hanrahan?
Public channels for Oisin Hanrahan include LinkedIn, 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 Oisin Hanrahan last invest?
The most recent investment recorded for Oisin Hanrahan closed in Nov 2021. Shizune tracks 7 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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