Diane Yung
Partner and CFO
Get their honest, personalized take on your startup.
Sign in to pitch Diane →At a glance
- Full Name
- Diane H. Yung
- Title
- Partner & Chief Financial Officer
- Firm
- RockPort Capital Partners LLC
- Firm Type
- Multi-stage venture capital firm (cleantech / energy-focused); note that some contact aggregators list her under "Angel Investors," but RockPort is an institutional VC firm, not an angel group
- Investment Stage
- Multi-stage (seed through growth), per the firm's own description as "a multi-stage venture capital firm"
- Check Size
- Not publicly disclosed
- Target Company Profile
- Industrial and consumer-facing companies whose technologies and products provide innovative solutions to large worldwide markets
- Sector Focus
- Alternative and traditional energy, mobility, and sustainability (cleantech)
- Geographic Focus
- Global, with a U.S. base; offices historically in Boston and San Francisco
- Location
- Boston, Massachusetts (resides in Southborough, MA)
Background
Diane H. Yung is Partner and Chief Financial Officer at RockPort Capital Partners, a Boston-based venture capital firm founded in 1998 that focuses on energy, mobility, and sustainability technologies. As CFO she is responsible for the firm's financial operations, fund administration, and risk management, supporting a portfolio that spans roughly 40+ clean-technology companies and more than $850 million in assets under management across five funds.
Before joining RockPort, Yung built a career at the intersection of finance, administration, and the energy sector. She served as Director of Finance & Administration at Harvard University (including work associated with Harvard Magazine), and as Regional VP of Finance & Administration at Edison Mission Marketing & Trading, where she focused on electricity trading and risk management. Earlier, she progressed through senior finance roles at the Citizens Energy family of companies (including Citizens Power / Citizens Lehman Power), rising to Senior VP of Finance & Administration and Controller.
Yung holds a degree from the Questrom School of Business at Boston University. Her professional expertise spans venture capital, private equity, mergers and acquisitions, and startup finance — a background that positions her as the operational and financial backbone of RockPort's investment platform rather than as a front-line deal sourcer.
Investment Thesis & Focus
- RockPort invests in "industrial and consumer facing companies whose technologies and products provide innovative solutions" across three core domains: alternative energy, mobility, and sustainability.
- The firm describes itself as "a multi-stage venture capital firm" with "deep domain expertise" and a "collaborative approach to investing" in cleantech and energy.
- Emphasis on companies addressing large worldwide markets — power generation, grid infrastructure, transportation/mobility, and resource-efficiency applications.
- As CFO, Yung's role centers on fund finance, portfolio administration, and risk management; investment decisions are made at the partnership/firm level rather than by her individually.
Notable Investments
- Qnovo — battery software/analytics for EVs and mobile devices; Series C, $24M (January 2022), alongside BorgWarner and Constellation Technology Ventures.
- GaN Systems — gallium-nitride power semiconductors; acquired by Infineon Technologies (March 2023).
- NewLeaf Symbiotics — agricultural biologicals/microbial technology; multiple rounds including ~$20M and ~$22M Series D financings (2020).
- Ratio.City — urban-planning/geospatial software; acquired by Esri Canada (September 2023).
- Broncus Medical — medical device company; IPO (September 2021).
Unlock the full research
Get how to approach them, recent activity, sources, contact links — plus pitch their AI twin for a candid read on your raise.
One-time. Stays unlocked for you.