Golden Angels Investors

Golden Angels Investors is an angel investment group making investments in entrepreneurial ventures. The firm's members bring a track record of business success and a deep commitment to assisting entrepreneurs in building great companies. It leads opportunities directly as well as participates in opportunities led by other investors. Golden Angels Investors was established in 2002 and is headquartered in Brookfield, Wisconsin.

Mary Hannes

Associate Director

Tim Keane

Director

50 past transactions

Flex Biomedical

Venture Round in 2009
Flex Biomedical, a Madison-based company founded in 2007, is developing innovative treatments for orthopedic diseases. The company's lead product, the Flex Polymer™, is a synthetic polymer designed to treat osteoarthritis, an incurable, debilitating joint disease that affects 27 million people in the United States and 100 million people worldwide.

Promentis Pharmaceuticals

Series B in 2014
Promentis Pharmaceuticals, Inc., a biopharmaceutical company, develops therapies for the treatment of neuropsychiatric disorders. The company develops SXC-2023 and other compounds that engage System xc-, a central nervous system (CNS) target addressing glutamatergic imbalance and oxidative stress, to treat impulse control disorders, obsessive-compulsive disorder, and other neuropsychiatric diseases. Promentis Pharmaceuticals, Inc. was founded in 2006 and is based in Milwaukee, Wisconsin.

Realtime Brackets

Venture Round in 2018
Developer of a tournament bracket application designed to simplify the process of managing tournaments. The company's application provides filling out brackets for office pools, facilitates real-time pick switching, tracks two leader-boards and offers real-time score alerts and one-click bracket picks, enabling players to make changes to their brackets during the tournament and even during the games themselves

EmOpti

Private Placement in 2018
EmOpti provides software, hardware, consulting, and telehealth solutions for optimizing emergency medicine. EmOpti partners with hospital systems and existing providers to help them deliver care in new ways resulting in improved performance metrics as well as delighted patients and staff. The team is comprised of experienced clinicians, logistics experts, health business analysts, and innovative software developers.

Abre

Seed Round in 2021
Abre.io Inc. provides an online education management platform that allows teachers, admins, students, and parents to access the information and tools they need. Its platform delivers connected applications that simplify day-to-day activities for schools who use the Web to manage information and deliver instructional content. The company was incorporated in 2017 and is based in Cincinnati, Ohio.

Resonado

Seed Round in 2021
Resonado, Inc. designs and develops audio systems with its patented Flat Core Speaker technology for businesses. It caters to companies in automotive, consumer electronics, home theater, hospitality, and marine industries. The company was founded in 2017 and is headquartered in South Bend, Indiana with additional offices in San Francisco, California; Boston, Massachusetts; and Anyang, South Korea.

Promentis Pharmaceuticals

Venture Round in 2009
Promentis Pharmaceuticals, Inc., a biopharmaceutical company, develops therapies for the treatment of neuropsychiatric disorders. The company develops SXC-2023 and other compounds that engage System xc-, a central nervous system (CNS) target addressing glutamatergic imbalance and oxidative stress, to treat impulse control disorders, obsessive-compulsive disorder, and other neuropsychiatric diseases. Promentis Pharmaceuticals, Inc. was founded in 2006 and is based in Milwaukee, Wisconsin.

OnStation

Seed Round in 2021
OnStation builds an app that provides instant jobsite location, access to plans and design, and a team communication tool. It features an automatic station finder that empowers the user with the quickest and easiest way to know their location on the job. Their Station Finder feature can be converted to operate from the user's statewide milepost network. This allows OnStation to provide value on the numerous smaller jobs where survey data and project documents might be limited.

Immuto Scientific

Seed Round in 2021
Immuto Scientific is a biotechnology services company that provides analytical insights to pharmaceutical companies for drug discovery.

Extraordinary Re

Seed Round in 2017
Extraordinary Re (!Re) is creating a new marketplace where insurance liabilities can be syndicated to investors and then reallocated between investors in real time. Our platform will unlock $20+ trillion of existing liabilities held on insurance company balance sheets, access new sources of reinsurance capacity that is expert in pricing and managing dynamic risks, create price discovery for liabilities that are difficult to value, and enable institutional investors to access diversifying and attractive sources of return. It is the next step in the evolution of insurance linked securities (ILS).

AquaMost

Series B in 2011
AquaMost, a privately held corporation based in Madison, Wisconsin, is the developer of water treatment systems that kill bacteria without the addition of chemicals. The company’s patented SX Reactor platform is designed specifically for the oil and gas industry, and combines multiple bacteria killing forces, including onsite generation of chlorine and hydroxyl radicals, with UV irradiation to provide a 99%+ kill rate. AquaMost has deployed systems in Texas, Colorado, Utah, and Canada.

Fishidy

Series A in 2014
Fishidy is the only authoritative, intelligent, map-based social network that maximizes an angler’s time on the water by presenting and cultivating critical location-based information. Fishidy provides anglers the maps of specific locations to plan their outing for success. The tools to catch their targeted species of fish. And the option to brag using social media.

Codaworx

Funding Round in 2017
Codaworx (formerly The Art Commission) is an online platform that connects artists who create commission projects to those individuals, organizations, and corporations seeking commissioned art. The Art Commission focuses marketing efforts on design and art professionals who represent clients looking for site-specific artwork, but the website is open to any art lover who wants to find artists for unique, one-of-a-kind projects. Through The Art Commission website, its Installments Newsletter and blog, the company champions the importance of design collaborations in bringing creativity and beauty into the places where we live and work.

Ratio

Venture Round in 2010
Ratio, Inc., a medical device company, develops and produces drug delivery pumps. It offers disposable drug delivery pump, a non-electronic and hydrogel-based drug delivery technology that delivers large molecule drugs and various biologics into the skin via microneedles. The company also provides painless and active transdermal products. Ratio, Inc. was founded in 2005 and is based in Monona, Wisconsin..

Promentis Pharmaceuticals

Venture Round in 2016
Promentis Pharmaceuticals, Inc., a biopharmaceutical company, develops therapies for the treatment of neuropsychiatric disorders. The company develops SXC-2023 and other compounds that engage System xc-, a central nervous system (CNS) target addressing glutamatergic imbalance and oxidative stress, to treat impulse control disorders, obsessive-compulsive disorder, and other neuropsychiatric diseases. Promentis Pharmaceuticals, Inc. was founded in 2006 and is based in Milwaukee, Wisconsin.

Bitsbox

Seed Round in 2016
Bitsbox is a provider of a monthly subscription box used to offer increasingly advanced projects that teach children to code. The company's subscription box provides monthly coding projects that teach gradeschoolers how to program application through a website, that runs on phones and tablets, enabling children to learn to code in a hassle free way. It teaches real coding with crazy fun projects that come in the mail every month. Bitsbox was established in 2014 and is headquartered in Boulder, Colorado.

EmOpti

Seed Round in 2015
EmOpti provides software, hardware, consulting, and telehealth solutions for optimizing emergency medicine. EmOpti partners with hospital systems and existing providers to help them deliver care in new ways resulting in improved performance metrics as well as delighted patients and staff. The team is comprised of experienced clinicians, logistics experts, health business analysts, and innovative software developers.

Acorai

Funding Round in 2023
Acorai provides heart failure management through non-invasive intracardiac pressure monitoring. Acorai was founded in 2019 and is headquartered in Skane, Sweden.

Curate

Venture Round in 2019
Curate is a civic intelligence company that empowers organizations to monitor risk and find opportunities in local government discussions at scale. Curate is leveraging artificial intelligence to change the way organizations engage with local government. Government relations professionals and construction industry leaders use Curate’s database and custom weekly reports to track projects, policies, and hot topics in thousands of municipalities across the U.S. Based in Madison, Wisconsin. It was founded in 2016 and is headquartered in Madison, Wisconsin.

Page Vault

Series A in 2016
Page Vault enables legal professionals to easily capture web content for use as evidence in the U.S. courts. It is a cloud-based Software-as-a-Service subscription solution that provides a trusted third party chain of custody for captures with the simplicity of a screenshot. It was incorporated in 2013 and is based in Chicago, Illinois.

Dynamis Software

Angel Round in 2014
Dynamis Software Corporation provides a software solution for insurance brokers to collaborate with their clients. The company offers Dynamic Plan Designer, a solution that models benefit plans in a visual format that is easily understood by customers. Its software tool enables brokers to compare plans, provide real-time cost updates, model funding options, and store medical and Rx plans. Dynamis Software Corporation was incorporated in 2012 and is based in Milwaukee, Wisconsin. As of October 17, 2018, Dynamis Software Corporation operates as a subsidiary of Applied Systems, Inc.

CNote

Angel Round in 2017
CNote is an investment platform that earns a better return while investing in the causes and communities that matters. CNote rewards great savers with alternative financial vehicles that earn more - safely and simply. Their first product, CNote Savings, helps good savers earn up to 2.5% annual return -- that's 35x more than a traditional savings account. The was founded in 2016 by two women with decades of experience working in finance, venture capital, and private equity. CNote is headquartered in Oakland, California.

Promentis Pharmaceuticals

Series A in 2010
Promentis Pharmaceuticals, Inc., a biopharmaceutical company, develops therapies for the treatment of neuropsychiatric disorders. The company develops SXC-2023 and other compounds that engage System xc-, a central nervous system (CNS) target addressing glutamatergic imbalance and oxidative stress, to treat impulse control disorders, obsessive-compulsive disorder, and other neuropsychiatric diseases. Promentis Pharmaceuticals, Inc. was founded in 2006 and is based in Milwaukee, Wisconsin.

EMSystems

Seed Round in 2004
EMSystems, LLC develops Web-based healthcare information management solutions in the United States. It offers EMResource, an inventory and resource management system; EMTrack, a patient and evacuee tracking system; EMCredential, a volunteer registry application that registers, verifies credentials, notifies, and manages volunteers in emergency situations; and EMRecord, an e-patient care record solution that allows users to collect and disseminate critical EMS patient information. The company's solutions also support shelter, dialysis, and mental health status; alert/event notification; and standard and ad-hoc reporting applications. In addition, it provides implementation, training, and customer support services. The company's solutions are used in hospitals, EMS providers, fire departments, law enforcement agencies, and health departments in the event of medical emergencies, mass casualty events, and public health incidents. EMSystems, LLC was formerly known as EMSystem.com LLC and changed its name to EMSystems, LLC in 2002. The company was founded in 1997 and is based in Milwaukee, Wisconsin.

AquaMost

Debt Financing in 2015
AquaMost, a privately held corporation based in Madison, Wisconsin, is the developer of water treatment systems that kill bacteria without the addition of chemicals. The company’s patented SX Reactor platform is designed specifically for the oil and gas industry, and combines multiple bacteria killing forces, including onsite generation of chlorine and hydroxyl radicals, with UV irradiation to provide a 99%+ kill rate. AquaMost has deployed systems in Texas, Colorado, Utah, and Canada.

AquaMost

Venture Round in 2016
AquaMost, a privately held corporation based in Madison, Wisconsin, is the developer of water treatment systems that kill bacteria without the addition of chemicals. The company’s patented SX Reactor platform is designed specifically for the oil and gas industry, and combines multiple bacteria killing forces, including onsite generation of chlorine and hydroxyl radicals, with UV irradiation to provide a 99%+ kill rate. AquaMost has deployed systems in Texas, Colorado, Utah, and Canada.

Promentis Pharmaceuticals

Debt Financing in 2013
Promentis Pharmaceuticals, Inc., a biopharmaceutical company, develops therapies for the treatment of neuropsychiatric disorders. The company develops SXC-2023 and other compounds that engage System xc-, a central nervous system (CNS) target addressing glutamatergic imbalance and oxidative stress, to treat impulse control disorders, obsessive-compulsive disorder, and other neuropsychiatric diseases. Promentis Pharmaceuticals, Inc. was founded in 2006 and is based in Milwaukee, Wisconsin.

Alinea Engage

Seed Round in 2018
Alinea Engage LLC developes a software platform which allows outpatient physical therapy and rehabilitation providers to engage patients and improve care by using automation. It offers a software that allows medical practices to digitize their intake forms and complete the onboarding process before a patient arrives for the appointment. The company was founded in 2015 and is based in Milwaukee, Wisconsin.

Fiveable

Venture Round in 2020
Fiveable, Inc., an educational technology company, provides education services through its platform. It offers Fiveable, an interactive social learning platform for AP students and teachers. The company’s platform provides services in the areas of history and social science, STEM, languages, and others. Fiveable, Inc. was founded in 2018 and is headquartered in Milwaukee, Wisconsin.

PerBlue

Series A in 2010
PerBlue is an independent mobile games studio based in Madison, Wisconsin. PerBlue makes a free-to-play midcore RPG and strategy games played by millions of people around the world. From the company's bootstrapping roots that began in the founder's college apartments in 2008, the company has grown to become a venture-backed mobile gaming studio with a talented team of 40+ employees. Fueled with the passion to build great products and entertain millions of people, PerBlue endeavors to change the world with fun and innovative mobile game play.

AquaMost

Debt Financing in 2012
AquaMost, a privately held corporation based in Madison, Wisconsin, is the developer of water treatment systems that kill bacteria without the addition of chemicals. The company’s patented SX Reactor platform is designed specifically for the oil and gas industry, and combines multiple bacteria killing forces, including onsite generation of chlorine and hydroxyl radicals, with UV irradiation to provide a 99%+ kill rate. AquaMost has deployed systems in Texas, Colorado, Utah, and Canada.

UClass

Seed Round in 2014
As of February 19, 2015, UClass, Inc. was acquired by Renaissance Learning Inc. UClass, Inc. provides a Web-based content repository that enables district, school, and organization personnel to store, tag, organize, share, search, view, and download files. Its curricular management and analytics solution offers students and teachers with access to worldwide education network. The company was founded in 2012 and is based in San Francisco, California.

Alinea Engage

Private Placement in 2018
Alinea Engage LLC developes a software platform which allows outpatient physical therapy and rehabilitation providers to engage patients and improve care by using automation. It offers a software that allows medical practices to digitize their intake forms and complete the onboarding process before a patient arrives for the appointment. The company was founded in 2015 and is based in Milwaukee, Wisconsin.

UtilityAPI

Seed Round in 2015
UtilityAPI is a mission-driven software company that enables standardized data transactions for the new energy economy. Hundreds of companies use this everyday for quote generation, feasibility analyses, and asset management, measurement, and verification. UtilityAPI is based in oakland, California.

EmOpti

Venture Round in 2015
EmOpti provides software, hardware, consulting, and telehealth solutions for optimizing emergency medicine. EmOpti partners with hospital systems and existing providers to help them deliver care in new ways resulting in improved performance metrics as well as delighted patients and staff. The team is comprised of experienced clinicians, logistics experts, health business analysts, and innovative software developers.

Dock Technologies

Angel Round in 2015
Dock Technologies, Inc. develops medical equipment. It offers INSIGHT system, a wristband that automatically activates the timer to start counting up minute-by-minute; collects, review, and record time points; visualize and analyze; and make data ready for reporting needs. The company was incorporated in 2013 and is based in Madison, Wisconsin.

Stir

Seed Round in 2014
Many of us spend a good portion of our waking hours at desks, using computers and other devices to communicate and collaborate with the world around us. At Stir, we feel that there’s an incredible opportunity to reimagine the desk as something that is powerful, life-changing and even lovable. The Stir Kinetic desk is just that. Stir is a smart, connected desk that moves from sitting to standing, learns from you and responds, and tracks extra calories burned.

Vital Sensors

Venture Round in 2006
Vital Sensors, a medical device company, develops a remote cardiac sensor for congestive heart failure patients in the United States. Its remote cardiac sensors provide on-demand data monitoring for patients with cardiovascular diseases in hospitals and homes. The company was formerly known as Vital Sensors GmbH. Vital Sensors, Inc. was founded in 2002 and is headquartered in Richmond, Virginia.

PerBlue

Venture Round in 2012
PerBlue is an independent mobile games studio based in Madison, Wisconsin. PerBlue makes a free-to-play midcore RPG and strategy games played by millions of people around the world. From the company's bootstrapping roots that began in the founder's college apartments in 2008, the company has grown to become a venture-backed mobile gaming studio with a talented team of 40+ employees. Fueled with the passion to build great products and entertain millions of people, PerBlue endeavors to change the world with fun and innovative mobile game play.

EdSurge

Series B in 2018
EdSurge, Inc. owns and operates a community which provides news and information on innovation in education technology. Its product browser enables the members to filter information by subject, audience, product characteristics, standards alignment, and technology platform. The company caters to educators, entrepreneurs, and investors. It also publishes a weekly newsletter and reports. EdSurge, Inc. was founded in 2011 and is based in Burlingame, California.

AgLocal

Venture Round in 2014
AgLocal wants consumers to understand what they eat, where it comes from and teach consumers how they can support these family farms.

Dynamis Software

Debt Financing in 2012
Dynamis Software Corporation provides a software solution for insurance brokers to collaborate with their clients. The company offers Dynamic Plan Designer, a solution that models benefit plans in a visual format that is easily understood by customers. Its software tool enables brokers to compare plans, provide real-time cost updates, model funding options, and store medical and Rx plans. Dynamis Software Corporation was incorporated in 2012 and is based in Milwaukee, Wisconsin. As of October 17, 2018, Dynamis Software Corporation operates as a subsidiary of Applied Systems, Inc.

Tangiblee

Convertible Note in 2014
Tangiblee, Inc. operates a platform that enables online retailers to visually try on merchandise before purchase. The company is based in Chicago, Illinois.

Dynamis Software

Angel Round in 2017
Dynamis Software Corporation provides a software solution for insurance brokers to collaborate with their clients. The company offers Dynamic Plan Designer, a solution that models benefit plans in a visual format that is easily understood by customers. Its software tool enables brokers to compare plans, provide real-time cost updates, model funding options, and store medical and Rx plans. Dynamis Software Corporation was incorporated in 2012 and is based in Milwaukee, Wisconsin. As of October 17, 2018, Dynamis Software Corporation operates as a subsidiary of Applied Systems, Inc.

AquaMost

Debt Financing in 2014
AquaMost, a privately held corporation based in Madison, Wisconsin, is the developer of water treatment systems that kill bacteria without the addition of chemicals. The company’s patented SX Reactor platform is designed specifically for the oil and gas industry, and combines multiple bacteria killing forces, including onsite generation of chlorine and hydroxyl radicals, with UV irradiation to provide a 99%+ kill rate. AquaMost has deployed systems in Texas, Colorado, Utah, and Canada.

Fiveable

Seed Round in 2020
Fiveable, Inc., an educational technology company, provides education services through its platform. It offers Fiveable, an interactive social learning platform for AP students and teachers. The company’s platform provides services in the areas of history and social science, STEM, languages, and others. Fiveable, Inc. was founded in 2018 and is headquartered in Milwaukee, Wisconsin.

Needls.com

Seed Round in 2015
The needls. ad platform allows businesses to automatically create, target and optimize digital ads across Facebook & Instagram. Needls. automatically determines the perfect target audience for these ads by monitoring social media conversations through its proprietary purchase intent engine.

Dynamis Software

Funding Round in 2016
Dynamis Software Corporation provides a software solution for insurance brokers to collaborate with their clients. The company offers Dynamic Plan Designer, a solution that models benefit plans in a visual format that is easily understood by customers. Its software tool enables brokers to compare plans, provide real-time cost updates, model funding options, and store medical and Rx plans. Dynamis Software Corporation was incorporated in 2012 and is based in Milwaukee, Wisconsin. As of October 17, 2018, Dynamis Software Corporation operates as a subsidiary of Applied Systems, Inc.

Abre

Series A in 2024
Abre.io Inc. provides an online education management platform that allows teachers, admins, students, and parents to access the information and tools they need. Its platform delivers connected applications that simplify day-to-day activities for schools who use the Web to manage information and deliver instructional content. The company was incorporated in 2017 and is based in Cincinnati, Ohio.

Transportant

Venture Round in 2023
Transportant, Inc. designs and develops software tools for school bus services providing mobile application. The products include MyBusHopper, an application that assists parents and students to catch bus and get updates; Smart Bus that provides technical support to drivers and students; and Fleet Dashboard, a tool used by school administrators for tracking and locating bus. Transportant, Inc. company was incorporated in 2017 and is based in Shawnee, Kansas.