# Gainline Capital Partners

Gainline Capital Partners is a Private Equity based in Stamford, United States.

## Overview

- **Organization type:** Private Equity
- **Headquarters:** Stamford, United States
- **Region:** North America
- **Address:** Stamford, CT, United States
- **Founded:** 2016
- **Assets under management:** $150M - $500M (Altss estimate)
- **Website:** www.gainlinecapital.com
- **LinkedIn:** https://www.linkedin.com/company/gainline-capital-partners-lp

## Regulatory record

- **CRD number:** 285325
- **SEC file number:** 801-117953
- **Registration status:** APPROVED
- **Latest Form ADV filing:** 2026-03-31T05:00:00.000Z
- **Reports private funds:** Yes
- **Private funds reported:** 0
- **IAPD record:** https://adviserinfo.sec.gov/firm/summary/285325

## About

Gainline Capital Partners is an SEC-registered investment adviser in Stamford, CT, established in 2020. The firm manages $1.2 billion in regulatory assets. It has 20 employees and 16 investment advisers.

## Sectors

- Industrial Tech
- Enterprise Software
- Consumer
- Healthcare Services

## People

- Rick Sullivan — Managing Partner
- Allan Weinstein — Managing Partner

## Questions

### Who leads investment decisions at Gainline Capital Partners?

Rick Sullivan and Allan Weinstein jointly lead investment decisions as Managing Partners. Sullivan brings operational CEO experience from manufacturing, while Weinstein contributes structuring and deal-execution expertise from investment banking. The two partners share investment committee authority and personally oversee each portfolio company's operational improvement plan.

### What kind of control does Gainline seek in its investments?

Gainline targets control buyouts where it can install operational leadership and implement restructuring plans directly. The firm does not make passive minority investments. Its model depends on securing board and management control to execute the operational transformations that define the strategy.

### Does Gainline participate in competitive auctions or source deals differently?

Gainline sources a substantial portion of its deal flow through proprietary and intermediary-driven channels focused on complex situations — corporate carve-outs, founder transitions without succession, and underperforming divisions. While the firm does participate in limited auctions, its operational turnaround thesis positions it to compete where financial buyers without operating expertise are less effective.

### What is the geographic scope of Gainline's investments?

Gainline invests exclusively in North America, with a focus on the United States. The firm's operating-partner model requires physical proximity to portfolio companies, making international expansion unlikely without a dedicated regional presence. Current portfolio companies are located across the Midwest, Northeast, and Southeast.

## Related profiles

- [Gaingels](https://altss.com/profile/gaingels)
- [Gains Associates](https://altss.com/profile/gains-associates)

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Last updated: 2026-06-03T20:00:00.000Z

Canonical page: https://altss.com/profile/gainline-capital-partners

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