Madison Bay Capital Partners

Madison Bay Capital Partners, founded in 2013 and based in New York, is a growth equity firm that focuses on investing in companies within the technology and consumer products sectors in the United States. The firm positions itself as a solution provider for business growth and investment opportunities, aiming to support companies as they expand and develop in their respective markets.

Eugene Song

Co-Founder and Managing Partner

4 past transactions

Aria Systems

Private Equity Round in 2018
Aria Systems, established in 2002 and headquartered in San Francisco, specializes in providing a cloud-based platform for managing and billing recurring revenues. Its core product, Aria, caters to enterprises seeking subscription-based billing solutions, while Aria Crescendo sets industry standards for cloud-based monetization. Aria for Communications serves mobile, multiple system operators, and over-the-top media providers. The company serves diverse industries such as hi-tech, media, telecom, cloud services, and finance worldwide, empowering clients to capitalize on each customer-driven event, engage customers actively, and develop new products swiftly. Aria Systems has a strategic partnership with Ntegra.

Aria Systems

Series F in 2017
Aria Systems, established in 2002 and headquartered in San Francisco, specializes in providing a cloud-based platform for managing and billing recurring revenues. Its core product, Aria, caters to enterprises seeking subscription-based billing solutions, while Aria Crescendo sets industry standards for cloud-based monetization. Aria for Communications serves mobile, multiple system operators, and over-the-top media providers. The company serves diverse industries such as hi-tech, media, telecom, cloud services, and finance worldwide, empowering clients to capitalize on each customer-driven event, engage customers actively, and develop new products swiftly. Aria Systems has a strategic partnership with Ntegra.

Midwestern BioAg

Venture Round in 2016
Midwestern BioAg, Inc. is a biologically-based agricultural company headquartered in Madison, Wisconsin, with additional facilities across several states. Established in 1983, it specializes in manufacturing fertilizers, livestock nutrition, seeds, and organic agricultural products. The company's offerings include a variety of fertilizer blends, both dry and liquid, along with soil amendments and livestock nutrition products tailored for different stages of animal development. Midwestern BioAg also provides mineral products designed for a range of crops, including berries, orchards, and vegetables, as well as organic fertilizers aimed at supporting sustainable farming practices. Beyond product manufacturing, the company serves as an agricultural consulting resource, helping farmers develop tailored management plans that enhance soil health, improve nutrient use efficiency, and increase the overall productivity of their farms, ultimately yielding economic and environmental benefits.

Aria Systems

Series E in 2016
Aria Systems, established in 2002 and headquartered in San Francisco, specializes in providing a cloud-based platform for managing and billing recurring revenues. Its core product, Aria, caters to enterprises seeking subscription-based billing solutions, while Aria Crescendo sets industry standards for cloud-based monetization. Aria for Communications serves mobile, multiple system operators, and over-the-top media providers. The company serves diverse industries such as hi-tech, media, telecom, cloud services, and finance worldwide, empowering clients to capitalize on each customer-driven event, engage customers actively, and develop new products swiftly. Aria Systems has a strategic partnership with Ntegra.
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