Founder Directory
Built by Keitoto
Founders64
Known for these resultsRole39%Role is parsed from founder titles in yc.db. Known for 39% of these rows — the rest have no title at all, mostly 2019–2023. Those rows stay in the result and are counted as Unknown, never as No.Bio77%Bio coverage: 77% of these founders have a bio on their YC profile. Every bio-derived facet (ex-company, school, credentials, discipline) is Unknown for the rest.Ex-company14%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 14% of these rows have at least one match.School22%School is matched from bios, case-sensitive for acronyms. 22% of these rows have at least one match.
- Eric Nilsson@eric_nilsson_Founder/CTO · MeteoricS26Industrials · San Francisco
- Mete Karslioglu@MeteKarsli0gluFounder/CEO · MeteoricS26Industrials · San Francisco
- George RoseFounder/CEO · Rise ReformingS26Industrials · Chicago
- Jona van OordFounder/COO · Rise ReformingS26Industrials · Chicago
- Lucas ZubillagaFounder/CTO · Rise ReformingS26Industrials · Chicago
- Berkley NobleFounder/CTO · DuraniumS25Industrials · San Francisco
- Brenden Prins-McKinneyFounder/CEO · DuraniumS25Industrials · San Francisco
- Alex FusterFounder/CEO · AstroW25Industrials · New York
- Antonio MonrealFounder/CTO · Revise RoboticsW25Industrials · New York
- Rupesh JeyaramFounder/CEO · Revise RoboticsW25Industrials · New York
- Eric KimFounder/CTO · NetworkOceanS24Industrials · San Francisco
- Sam Mendel@sammendel4Founder/CEO · NetworkOceanS24Industrials · San Francisco
- Derek ModzelewskiFounder/CTO · RewbiS24Industrials · San Francisco
- Thomas MargeFounder/CEO · RewbiS24Industrials · San Francisco
- Dasha CherepennikovaFounder · Line.BuildS23B2B · San Francisco
- Stephanie VasquezFounder · Line.BuildS23B2B · San Francisco
- Jack O'Grady@jack_ogradyFounder · AtmetoW23Industrials · Los Angeles
- Ferhat Babacan@ferhaatbabacaanFounder · BluedotW23Fintech · San Francisco
- Selinay Parlak@selinayfilizpFounder · BluedotW23Fintech · San Francisco
- Arpan RauFounder · OutSail TechnologiesW23Industrials · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Eric NilssonMeteoricFounder/CTOSummer 2026IndustrialsSan Francisco, United States2https://x.com/eric_nilsson_Mete KarsliogluMeteoricFounder/CEOSummer 2026IndustrialsSan Francisco, United States2https://x.com/MeteKarsli0gluGeorge RoseRise ReformingFounder/CEOSummer 2026IndustrialsChicago, United States4—Jona van OordRise ReformingFounder/COOSummer 2026IndustrialsChicago, United States4—Lucas ZubillagaRise ReformingFounder/CTOSummer 2026IndustrialsChicago, United States4—Berkley NobleDuraniumFounder/CTOSummer 2025IndustrialsSan Francisco, United States12—Brenden Prins-McKinneyDuraniumFounder/CEOSummer 2025IndustrialsSan Francisco, United States12—Alex FusterAstroFounder/CEOWinter 2025IndustrialsNew York, United States1—Antonio MonrealRevise RoboticsFounder/CTOWinter 2025IndustrialsNew York, United States3—Rupesh JeyaramRevise RoboticsFounder/CEOWinter 2025IndustrialsNew York, United States3—Eric KimNetworkOceanFounder/CTOSummer 2024IndustrialsSan Francisco, United States4—Sam MendelNetworkOceanFounder/CEOSummer 2024IndustrialsSan Francisco, United States4https://x.com/sammendel4Derek ModzelewskiRewbiFounder/CTOSummer 2024IndustrialsSan Francisco, United States3—Thomas MargeRewbi2× YCFounder/CEOSummer 2024IndustrialsSan Francisco, United States3—Dasha CherepennikovaLine.BuildFounderSummer 2023B2BSan Francisco, United States3—Stephanie VasquezLine.BuildFounderSummer 2023B2BSan Francisco, United States3—Jack O'GradyAtmetoFounderWinter 2023IndustrialsLos Angeles, United States2https://x.com/jack_ogradyFerhat BabacanBluedotFounderWinter 2023FintechSan Francisco, United States15https://x.com/ferhaatbabacaanSelinay ParlakBluedotFounderWinter 2023FintechSan Francisco, United States15https://x.com/selinayfilizpArpan RauOutSail TechnologiesFounderWinter 2023IndustrialsSan Francisco, United States3—
Showing 1–20 of 64 founders
Thomas Marge
Founder·inBalance
PRIMARY INFO
RoleFounder· not in title
Team size10
BatchWinter 2021
LocationSan Francisco, United States
Company statusAcquired
StageEarly
BIO
Thomas is co-founder and CEO of Rewbi, which uses AI to optimize grid-connected battery storage. He previously founded inBalance, a YC W21 company, which was acquired by Stem (NYSE: STEM) in January of 2023. He led battery storage optimization and forecasting for Stem. He completed part of a Pure Mathematics PhD at University of Cambridge, which he left to build inBalance. He holds a Masters in Applied Mathematics and B.S.E. in Pure and Applied Mathematics from Johns Hopkins, graduating early.
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
CredentialsPhD
DisciplineResearcherKeyword match from the bio text, not a classifier.
TRACK RECORD
2× YC founderSerial founder · self-declaredExit mentioned in bio
- W21inBalanceAcquired · this entry
- S24RewbiActive
COMPANY CONTEXT
inBalanceElectricity price forecasts for energy storage, ev charging, etc.
IndustryIndustrials
Websiteinbalanceresearch.com
Team size10
X—
LocationSan Francisco, United States
BatchWinter 2021
Also founded · 1 more YC company
RewbiActiveSummer 2024A stealth mode startup.
IndustrialsSan Francisco, United States3Open this entry
