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Sean Blanchfield, Angel Investor

Sean Blanchfield

Angel Investor

Dublin, Ireland

Sean Blanchfield is a convertible note investor in Dublin focused on Software and Analytics. Sean Blanchfield studied at Trinity College, Dublin and Trinity College, Dublin.

Total investments:
1
Last investment:
Lead investor:
0%

Last updated:

Industries Sean Blanchfield invests in

SoftwareAnalyticsAdvertisingDigital Media

Stages Sean Blanchfield invests in

Convertible Note

Countries Sean Blanchfield invests in

Ireland

Contacts

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Investment Focus

Industry

  • Software 1 (100%)
  • Analytics 1 (100%)
  • Advertising 1 (100%)
  • Digital Media 1 (100%)

Investments

CompanyDescriptionRoundLinks
PageFair’s mission is to sustain the open web by re-establishing a fair deal between users and content creators. The company does this by helping website owners and publishers detect and measure adblock, and protecting advertising inventory from being blocked.The company has two products: 1) PageFair Analytics, which is used by thousands ofpublishers for free, and measures adblock on over 11 billion pageviews per month, and 2) PageFair Ads, which serves advertising in a manner that adblockers are unable to circumvent, and solves the speed, privacy, and UX issues that cause adblocking in the first place.PageFair's founders personally experienced the damage adblocking can do to a website. While they recognize that visitors need to defend themselves from distracting, intrusive, inappropriate, disingenuous or malicious advertising, the rise of adblocking is now leading to the death of quality free websites.PageFair is an international startup based in Dublin, Ireland. Founded in 2012, the company was initially funded by its founders with additional seed capital from Tribal Ventures, Frontline Ventures, and Enterprise Ireland. Thoudands of publishers now use PageFair to measure the extent to which they are affected by adblocking and to display advertising to adblockers.PageFair is the global authority on adblocking trends, cited in The New York Times, The Financial Times, The Economist, Advertising Age, and others. $88K / Convertible Note / Sep 08, 2014

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Hospitality
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CleanTech
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Artificial Intelligence
Social Impact
Energy
SaaS
Mobile
Consumer
Health Care
Enterprise Software
Local
Platforms
Travel
InsurTech
Oil and Gas
Retail
Film
Payments
Marketplace
Organic Food
Fitness
Machine Learning
Agriculture (AgTech)
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B2B
Social Network
Wellness
Education
Medical Device
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Sports
Legal
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Software
Medical
Web3
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Fashion
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Climate
Cannabis
Wine and Spirits
Mobile Apps
Life Science
Food and Beverage
Publishing
Art
Music
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Sporting Goods
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Finance
Digital Media
Manufacturing
Social Media
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FAQ

What does Sean Blanchfield invest in?

Sean Blanchfield invests primarily in Software, Analytics and Advertising startups, most often at Convertible Note stage. Most of the 1 investments tracked by Shizune back companies in Ireland. The Investment Focus section breaks down every industry, stage and country in the portfolio.

How do I contact Sean Blanchfield?

Public channels for Sean Blanchfield 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 Sean Blanchfield last invest?

The most recent investment recorded for Sean Blanchfield closed in Sep 2014. Shizune tracks 1 investment 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 Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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