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Capital For What’s Next

We provide the capital and the operational expertise that founders and managers need to accelerate into their next phase of growth.

About Us

At Turn/River, we believe that the new breed of technology and SaaS companies we see today — capital efficient, data-driven, high velocity — requires a new kind of investor. Turn/River was purpose-built for these companies, combining flexible capital with an incredibly deep operational team that helps founders and managers impact their business.


This unique operational team is the core of our strategy. Turn/River combines an internal growth-focused agency comprised of SEO, SEM, go-to-market, and recruiting experts with a frontline team that can provide Sales Directors as a Service, Marketing Directors as a Service, and Customer Success Directors as a Service to implement best practices and scale operations as quickly and efficiently as possible.


Turn/River is focused on helping these companies across many formats, whether they be founder-driven, bootstrapped businesses, unloved divisions of larger companies, or even fundamentally sound former venture-funded companies looking for a new direction. We can help buy out these businesses or spin out these divisions, as well as provide liquidity for founders or former owners and growth capital for acceleration or acquisitions.


How can we help you?

Portfolio Companies

Mailgun is the leading email automation platform built for developers. Mailgun provides a powerful set of APIs that allows users to send, receive, and track email easily from within their applications.

Netsparker provides a dead-accurate, easy-to-use security scanner for enterprises to automatically find security flaws across thousands of websites, web applications, and web services. Its unique proof-based scanning technology yields industry-leading detection rates with false positive-free results every time.

Huddle is the industry-leading enterprise document collaboration platform that helps over 100,000 teams, enterprises, and government organizations collaborate intelligently.

Trakstar is a global performance management company that provides performance appraisal software to help organizations manage feedback, goals, and reviews.

Reviewsnap is an all-in-one performance management system that manages performance reviews, 360 degree feedback, compensation, and learning content.

Recruiterbox is an easy-to-use recruiting software and applicant tracking system to help growing companies manage their hiring process.

Test IO is a test management system to implement explorative and test case-based testing in just a few minutes. Test IO leverages a large group of international testers providing coverage across all devices.

Airbrake bug tracker is an error reporting application that provide insights into the health of your application and an organized platform to help teams squash bugs faster.

Magnus Health is the leading provider of a cloud-based student medical record solution designed specifically for schools. It equips schools with tools to save time and money while remaining in compliance with HIPAA, FERPA, and state regulations.

Sucuri is the leader in website security with their malware & blacklist removal and CloudProxy Firewall (WAF) product. Sucuri was acquired by GoDaddy in 2017.

Bookfresh is an online scheduling tool for SMBs. Bookfresh was acquired by Square in 2014.

Plum District is an e-commerce platform that offers products, activities, and inspiration for all mothers. Plum District was acquired by nCrowd in 2014.

Our Team

Dominic Ang Dominic Ang
Managing Partner

Dominic is the Founder and Managing Partner of Turn/River Capital. In addition to managing the firm, Dominic also leads the firm’s investment process and led recent investments in Mailgun, NetSparker, and Applied Training Systems, as well as prior investments in Sucuri (acquired by GoDaddy) and BookFresh (acquired by Square). Prior to founding Turn/River Capital, Dominic led the buyout and became CEO of My Perfect Sale (later acquired by Sugar, Inc). Prior to that, he was a Vice President at Vector Capital and an Associate at Advent International. Dominic graduated from the University of California at Berkeley, where he received a B.S. in Business Administration.


Evan Ginsburg Evan Ginsburg

Evan joined Turn/River Capital in 2015 and serves on the boards of Huddle, Magnus, Mailgun, Applied Training Systems, and Airbrake. He was part of the Turn/River team that led the BookFresh investment. As CEO of BookFresh, he drove significant growth, leading to its successful acquisition by Square in 2014. At Square, Evan led product marketing for Square Appointment (formerly BookFresh). Prior to BookFresh, he spent over a decade in enterprise software sales and sales management.


Chase Sorgel Chase Sorgel
Operating Partner

Chase joined Turn/River in 2016 and is focused on driving growth at the Turn/River portfolio companies. He leads the operations team that partners with the leadership at portfolio companies to execute and optimize proven growth strategies. Prior to joining Turn/River, Chase spent 11 years building high-performance marketing and sales teams in start-ups and large organizations. At PayPal, he led the global growth team that drove profitable customer acquisition across 100 countries. At the solar start-up RePower, Chase built the marketing and sales engines that generated 6x in revenue growth.


Saied Amiry Saied Amiry
Operating Principal

Saied joined Turn/River in 2018 and is focused on driving growth at the Turn/River portfolio companies. Prior to joining Turn/River, Saied led high performing marketing teams at both scaled businesses and growing startups such as LinkedIn, QuinStreet, and Apollo Education Group. At LinkedIn, he led the global marketing team for LinkedIn’s verticalized business lines focused on their Marketing & Sales Solutions business units. At Apollo Education Group, he led customer acquisition, lifecycle marketing, and retention efforts. Saied holds an M.B.A. from the Wharton School at University of Pennsylvania and a B.A. in Economics from University of California, Los Angeles.


Joanne Yuan Joanne Yuan
VP of Investment

Joanne joined Turn/River in 2017 and is responsible for sourcing and executing new investments and working strategically with companies post-investment. She has nearly a decade of experience investing in, scaling, acquiring, and selling enterprise software companies at Hellman & Friedman, Morgan Stanley, and Google. Prior to joining Turn/River, Joanne was an investment partner at Cowboy Ventures, a seed stage venture fund. She has an MBA from Stanford GSB and graduated magna cum laude with dual B.S./B.A. degrees from the University of Pennsylvania.


Alvin Ang Alvin Ang (no relation)
VP of Operations

Alvin joined Turn/River in 2014 and is responsible for operations, marketing and retention across the portfolio companies. Before joining the operations team, he was part of the investment team where he quarterbacked a number of investments including Netsparker, Recruiterbox, Mailgun, Trakstar, Magnus Health, Test IO, Airbrake and Reviewsnap. Prior to joining Turn/River, Alvin worked as a programmer and marketer on several projects, ran a small web agency and was an engineer at Bechtel. Alvin graduated from Purdue University where he received a B.S. in Chemical Engineering.


Jeff Kline Jeff Kline
VP of Sales

Jeff joined Turn/River in 2018 and is responsible for driving revenue and customer success at Turn/River’s portfolio companies. Jeff has over a decade of experience in sales, strategy, and operations. Prior to Turn/River, he built and scaled the sales development function and established sales operations at ThoughtSpot. At Twitter, he led business operations, the team that drove global revenue strategy. Prior to that, he was a management consultant with Bain & Company in San Francisco. Jeff holds an MBA from Stanford Graduate School of Business and graduated summa cum laude from Mississippi State University.


Jarrett Stringfellow Jarrett Stringfellow
Director of Sales and
Customer Success

Jarrett joined Turn/River in 2017 and is focused on driving sales and customer retention across the portfolio companies. Jarrett has spent the last 13 years working in a myriad of pre- and post-sales functions on the frontlines and in leadership roles. After building and leading SquareTrade’s channel sales team, Jarrett joined Impact Radius where he led the account management group to deliver best-in-class revenue growth and customer retention.


Micah Fisher-Kirshner Micah Fisher-Kirshner
Director of SEO & Content

Micah joined Turn/River in 2018 and manages SEO and content across the portfolio companies. He’s been in the SEO field for 10 years having previously worked at Zendesk, Zazzle, Become, and Balsam Brands. Within the industry he is the President of the SF SEO meetup association BayAreaSearch.org, is an advisor for SEORadar, and is a weekly panelist for Dumb SEO Questions. Micah has a Master’s in Pacific International Affairs from UCSD and a B.A. in International Affairs from The George Washington University.


Natalie Levy Natalie Levy
Director of Investment Development

Natalie joined Turn/River in 2017 and is focused on driving sourcing efforts for the firm. She was previously a top enterprise seller and participated in business development efforts across several financial, real estate, and sales enablement SaaS businesses based out of San Francisco and New York City. Prior to technology sales, Natalie was a trader at Citigroup. She graduated magna cum laude and holds a B.S.E. of Industrial Engineering and a minor in Mathematics from the University of Michigan.


Danny Zhang Danny Zhang
Director of Paid Media

Danny joined Turn/River in 2016 and manages all paid marketing efforts across the portfolio companies. Prior to joining Turn/River, Danny worked at 3Q Digital, a leading digital marketing agency, driving revenue growth for SaaS clients via paid search, paid social, and CRO testing. Danny has doubled the number of paid leads for Turn/River portfolio companies within 30 days of taking over their accounts. Danny graduated from Purdue University, where he received a B.S. in Economics.


Ben Holloway Ben Holloway
Senior Associate

Ben has worked on Turn/River’s investments in Netsparker, Huddle, and Mailgun and is also actively involved with Applied Training Systems and Magnus Health. Prior to joining Turn/River in 2016, Ben worked at Intuit in a variety of positions including corporate development and product management, and at Morgan Stanley as a private equity analyst. Ben graduated from Hamilton College, where he received a B.A. in Political Economics.


Maggie Miller Maggie Miller
Investment Development Analyst

Maggie joined Turn/River in 2017 and is focused on sourcing new investment opportunities for the firm. Prior to joining Turn/River, she worked in sales and marketing at various Y Combinator-backed startups. Maggie graduated magna cum laude from the University of North Carolina at Chapel Hill, where she received a B.A. in Political Science and a minor in Advertising.


Contact Us

535 Mission St.
San Francisco, CA 94105