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Pioneer Square Labs

Pioneer Square Labs

Seattle, Washingtonpsl.com

Overview

Pioneer Square Labs is a Seattle-based startup studio and venture capital firm that partners with entrepreneurs to conceive, launch, and scale early-stage technology companies.

Year Founded

2015

Portfolio Companies

26

Website

psl.com

Investments

Pioneer Square Labs investments
CompanyDateStageLead
SageOxMay 2026SeedCo-investor
CertivoFeb 2026SeedCo-investor
Tin CanDec 2025SeedCo-investor
CaseraDec 2025SeedCo-investor
BluePillNov 2025SeedCo-investor

Key People

Cynthia Mason

Retained Executive Recruiting Partner - Hiring Founders CEOs CTOs

Geoff Entress

Co-Founder and Managing Director

Greg Gottesman

Managing Director, Co-Founder

Julie Sandler

Venture Partner, Co-founder & General Partner, PSL Ventures, Managing Director, PSL

Vivek Ladsariya

Managing Director

Ben Gilbert

Venture Partner

David Zager

Partner

Palvi Mehta

CFO And Operating Partner

Alex Ray

Principal

Shilpa Kannan

Principal

Anthony Bontrager

Investor (PSL Studio III)

Sada K.

Partner Venture Capital

Sector & Stage Mix

Industry, funding stage, and valuation band breakdowns.

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SeedSeries ASeries BGrowth

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Investment Activity

Yearly cadence, pace, and funding raised over time.

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2021
2022
2023
2024
2025
2026

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FAQ

Firmographic Details

HeadquartersSeattle, Washington
Year Founded2015

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