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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

2

Investments

St. Louis County Port Authority investments
CompanyDateStageLead
SweetSpotSep 2025SeedCo-investor
Plastomics, Inc.Dec 2018Convertible DebtCo-investor
Plastomics, Inc.Sep 2017SeedCo-investor

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

HeadquartersSt. Louis, Missouri
Year Founded1984

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