Jack Pierse
Angel Investor
Dublin, Ireland
Jack Pierse is a pre-seed investor in Dublin focused on Software and Wellness. Jack Pierse is based out of Ireland and is the Co-Founder of HappyStack. Jack previously worked at Wayflyer as a Co-Founder and CFO. Jack Pierse attended Chartered Accountants Ireland.
- Total investments:
- 5
- Last investment:
- Lead investor:
- 20%
Last updated:
For AI agents: llms.txt
Industries Jack Pierse invests in
Stages Jack Pierse invests in
Countries Jack Pierse invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Pre-Seed
- $1M–$2M
Investment Focus
Industry
- Software 2 (40%)
- Wellness 1 (20%)
- Marketing 1 (20%)
- Nutrition 1 (20%)
- Agentic AI 1 (20%)
Stage
- Pre-Seed 3 (60%)
- Seed 1 (20%)
- Angel 1 (20%)
Country
- Ireland 2 (40%)
- United States 1 (20%)
- United Kingdom 1 (20%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| MARC is an AI startup dedicated to real estate asset management. | $1M / Pre-Seed / Feb 10, 2026 | ||
| Moshi is an AI-powered conversational commerce platform that transforms messaging engagement into revenue. We enable e-commerce brands and services to scale personalized customer interactions from acquisition through conversion to retention. This is all within a single, intelligent conversation across the most precious communication channels. | $1M / Pre-Seed / Nov 01, 2025 | ||
| Onform is a nutrition startup that provides a food supplement for brain and gut health. | $615.3K / Angel / Jan 11, 2025 | ||
| Retrograde is a Software Development company. | $2M / Pre-Seed / Sep 02, 2024 | ||
| Solidroad is an innovative AI-powered platform dedicated to revolutionizing hiring, onboarding, and training for enterprises and its a training tool for sales teams. | $1.2M / Seed / Jul 04, 2024 |
Co-Investors
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FAQ
What does Jack Pierse invest in?
Jack Pierse invests primarily in Software, Wellness and Marketing startups, most often at Pre-Seed and Seed stage. Most of the 5 investments tracked by Shizune back companies in Ireland. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Jack Pierse's check size?
Jack Pierse typically joins rounds of $1M–$2M 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 Jack Pierse participates in.
How do I contact Jack Pierse?
Public channels for Jack Pierse include LinkedIn, the website linked on this profile and Facebook. 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 Jack Pierse last invest?
The most recent investment recorded for Jack Pierse closed in Feb 2026. Shizune tracks 5 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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