Pioneer Square Labs

📍 Seattle, United States🗓 Founded 2015👥 37 employees💰 Last funded 2025
Software Development🌐 psl.com
Website LinkedIn
Pioneer Square Labs is a Seattle-based studio that creates and launches technology startups. We are funded by 14 VCs and 50 angel investors from Seattle, Silicon Valley, Colorado and other parts of the country. Companies created: - LumaTax (http://lumatax.com) allows small business owners to file their sales tax with ease. - Ad Lightning (http://adlightning.com) has a complete set of Ad Quality tools to save time, improve page performance and eliminate costly user experience problems for Publishers and Ad Platforms. - JetClosing (http://jetclosing.com) uses technology to create a better, more human, real estate title and settlement experience. - Boundless (http://boundless.com) is a new technology company providing immigrants with the tools, information, and personalized support to navigate their immigration journey with confidence.
3
Total investors
1
Early stage
0
Mid stage
2
Late stage
2015
Founded

Investors

3 investors
All
Early stage
Mid stage
Late stage
Investor geography1 country
United States
3
Investor activity2015–2025 · investors recorded per year
201512023120251
Recent (last 2y)Earlier
Frequently asked questions
Who invested in Pioneer Square Labs?
Pioneer Square Labs has 3 investors on record on gritt.io, including 1 early-stage backers and 2 late-stage investors.
When did Pioneer Square Labs last raise funding?
The most recent investment in Pioneer Square Labs recorded on gritt.io was in 2025.
When was Pioneer Square Labs founded?
Pioneer Square Labs was founded in 2015.
What industry is Pioneer Square Labs in?
Pioneer Square Labs operates in Software Development. Find similar Software Development investors on gritt.io.
Where is Pioneer Square Labs based?
Pioneer Square Labs is headquartered in Seattle, United States.