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St. Louis County Port Authority

St. Louis County Port Authority

St. Louis, Missouristlpartnership.com

Overview

St. Louis County Port Authority is a quasi-governmental economic development agency that encourages private capital investment, issues bonds, and provides grants and seed funding to businesses in St. Louis County.

Year Founded

1984

Portfolio Companies

3

Investments

St. Louis County Port Authority investments
CompanyDateStageLead
SweetSpotSep 2025SeedCo-investor
Plastomics, Inc.Dec 2018Convertible DebtCo-investor
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Sector & Stage Mix

Industry, funding stage, and valuation band breakdowns.

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SeedSeries ASeries BGrowth

Portfolio analytics

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Investment Activity

Yearly cadence, pace, and funding raised over time.

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2021
2022
2023
2024
2025
2026

Portfolio analytics

Caplight clients see yearly investment pace and funding raised over time.

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FAQ

Where is St. Louis County Port Authority based?

St. Louis County Port Authority is headquartered in St. Louis, Missouri, United States.

When was St. Louis County Port Authority founded?

St. Louis County Port Authority was founded in 1984.

How many portfolio companies does St. Louis County Port Authority have?

St. Louis County Port Authority has 3 portfolio companies in Caplight's dataset.

What are some companies in St. Louis County Port Authority's portfolio?

Portfolio companies visible on Caplight include SweetSpot, Plastomics, Inc..

What was St. Louis County Port Authority's most recent investment shown here?

St. Louis County Port Authority's most recent investment in this portfolio sample was in SweetSpot in 2025.

What sectors does St. Louis County Port Authority focus on?

St. Louis County Port Authority focuses on Healthcare & Life Sciences, Healthcare & Life Sciences, Energy & Sustainability, Frontier & Industrial Tech, Frontier & Industrial Tech, Enterprise Software.

What company stages does St. Louis County Port Authority focus on?

St. Louis County Port Authority typically invests at the Early stage.

Firmographic Details

HeadquartersSt. Louis, Missouri
Year Founded1984

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