How Mosaic ETA leverages Carta precision to create highly strategic funds

Mosaic ETA, a New York City-based private equity firm founded in 2024, partners with underserved entrepreneurs to acquire and grow lower middle-market companies. Fund managers Eduardo Zaldivar and Julien Ham-Ying provide differentiated support to entrepreneurs as hands-on advisors, connecting them with senior leaders who act as mentors post-investment.

Carta helps Mosaic ETA by streamlining its fund administration and supporting its investor onboarding, accounting, and taxes with accuracy and precision. By reducing taskwork, Zaldivar and Ham-Ying can focus on investing and company-building, allowing them to scale the firm while staying on mission.

“We’ve been quite intentional about who we’ve brought into the fund. Specifically, we wanted a group of limited partners who could give their expertise to support us as we build the firm and our searchers,” says Zaldivar. “At the same time, we’re aware of the administrative burden. Carta helps us get the best of both worlds. We can pursue a greater number of value-add LPs without dealing with all the processes of onboarding and managing.”

Carta takes some of the sting away from scaling with clear, efficient fund formation. In Carta, prospective limited partners are invited to join or log into the platform to sign subscription documents. Fund managers can countersign, set access levels for structured portfolio data, and make capital calls immediately.

Precise fund management is paying off. As Mosaic ETA evolves, individual investors are increasing their investments, partly due to the ease of working in Carta. The platform makes compliance and control as effortless as possible, letting the Mosaic team and its investors simplify re-investment.

“We have approximately twenty investors, and Carta has done a great job of helping us rinse and repeat without taking a bunch of time,” says Ham-Ying. “It’s very easy for folks to double down on Mosaic. It’s the work we’re doing, but it’s also a very straightforward process for them to expand partnership with us. We’re really excited about subsequent funds.”

Because Mosaic ETA gets more involved than traditional investors, Zaldivar and Ham-Ying have to be highly efficient at all times. With centralized fund administration, the Mosaic team trusts they’re getting exactly what they need in Carta.

“It’s great to have our back office in one place. It’s nice to simplify our communications and know that our firm’s information is centrally housed so there can be natural synergies between accounting and taxes,” says Ham-Ying. “The time savings from things like having templates ready to go—instead of creating our own capital calls and individually emailing and tracking them—is difficult to quantify, but is certainly substantial.”

In Carta, templates are tailor-made for multiple scenarios. Select customizations allow fund administrators to keep tasks moving forward without taking the time to create documentation from scratch.

Carta’s capital call system supports precision and speed, too. The system calculates individual investor contributions based on total amounts or commitment percentages, including when investors join or change commitments. Integration with limited partnership agreements ensures compliance and accuracy. Calls are automatically populated with details like investor information and due dates, letting Ham-Ying reclaim valuable time.

“Every moment of time we save allows us to focus on what matters most, which is helping our entrepreneurs. We are leaning in to do everything we can. That might be making introductions or helping with deal work or helping create a searcher’s tech stack. It’s imperative to free up as much of our time as we can to focus on growth and help our searchers acquire businesses.”