Tansel Ismail
Associate
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- Full Name
- Tansel Ismail
- Title
- Vice President (also referenced as Principal on some profiles)
- Firm
- Energy Impact Partners (EIP)
- Firm Type
- Multi-stage venture capital firm (~$3B AUM) — *not an angel investor*
- Investment Stage
- Seed and pre-seed through late/growth stage
- Check Size
- ~$3M–$10M (sweet spot ~$7M), per Signal/NFX
- Target Company Profile
- Early- and growth-stage cybersecurity and enterprise-software companies, often serving critical infrastructure, utilities, and industrial/OT environments
- Sector Focus
- Cybersecurity, enterprise software, energy transition / climate & clean tech; also tracks transportation tech and fintech
- Geographic Focus
- United States (firm based in New York; Ismail based in Miami / Southeast US)
- Location
- Miami, Florida (firm HQ: New York, NY)
Background
Tansel Ismail is a Vice President at Energy Impact Partners (EIP), a multi-stage venture capital firm (roughly $3B in assets) focused on digital transformation and the energy transition. He joined EIP in 2018 and has since become the firm's lead voice on cybersecurity and enterprise-software investing, partnering with 20+ companies across the early-to-late-stage spectrum. He is based in Miami and covers deals across the U.S.
Before EIP, Ismail was an investment banker at Citigroup, where he advised enterprise-software companies on M&A and capital raises — experience that informs his work sourcing and structuring later-stage rounds and exits. He earned a B.S. in Finance from the University of Florida.
Ismail is active on company boards tied to his portfolio. He serves as a Board Member at Xona Systems and a Board Director at SCYTHE, and in February 2025 he was appointed to the Board of Directors of API-security company 42Crunch. He is a recurring participant in the security community, appearing as an expert at the RSAC (RSA) Conference.
Investment Thesis & Focus
- Invests primarily in cybersecurity and enterprise software, with a bias toward companies protecting critical infrastructure, utilities, and industrial/operational-technology (OT) environments — a natural adjacency to EIP's energy-transition mandate.
- Operates across all stages, from seed/pre-seed early bets to late-stage and growth rounds; describes his focus as "early and late-stage investments in cybersecurity & enterprise software."
- Typical check size reported in the ~$3M–$10M range (sweet spot ~$7M), drawing on EIP's large fund base.
- Looks for category-defining products with strong enterprise and developer adoption — e.g., on 42Crunch: *"42Crunch is rapidly emerging as the leading API security testing solution, driven by strong adoption across both Fortune 500 enterprises and a vast developer community."*
- Values a path to scale from "early-stage innovation to global market leadership," and stays hands-on via board seats.
Notable Investments
- Dragos — Industrial/OT cybersecurity platform; EIP portfolio company Ismail has partnered with.
- Corelight — Network detection and response (open-source Zeek-based); EIP portfolio.
- Attivo Networks — Identity/deception-based security; acquired by SentinelOne (2022).
- Swimlane — Security orchestration, automation and response (SOAR).
- Urbint — AI platform for predicting and preventing threats to critical infrastructure and workers (Miami-based); EIP-backed, acquired by Itron for $325M (announced October 2025).
- SCYTHE — Adversary-emulation / breach-and-attack-simulation platform; Ismail serves as Board Director.
- Xona Systems — Secure remote access for critical systems; Ismail serves as Board Member.
- 42Crunch — API security testing; Ismail joined the board in February 2025.
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