Investor · Warrenville, IL
Chad Martinson
Open Chad in the network graph →Filings
24
SEC Form D
Connections
106
co-filers
Capital
$31.1M
across filings
Active
Sep 2017
to Nov 2025
Most-connected co-filers (106)
Dina Colombo · New York, NY17 sharedEli Nagler · New York, NY16 sharedMarat Molyboga, Ph.D · Warrenville, IL14 sharedEllen Rosenberg · New York, NY9 sharedKelly Wannop · New York, NY9 sharedMartin G. Brand · New York, NY7 sharedRobert S. Hillman · San Diego, CA5 sharedFrederic S. Garcia · New York, NY5 sharedCurtis W. Bradshaw · Warrenville, IL5 sharedErnest Jaffarian · Warrenville, IL5 sharedEfficient Capital Management, Llc · Warrenville, IL5 sharedEfficient Capital Management, Llc · Warrenville, IL5 sharedAlex Konanykhin · New York, NY5 sharedSteve Kurz · New York, NY5 sharedEfficient Capital Management, Llc · Warrenville, IL5 sharedJohannes P. Huth · New York, NY4 sharedJames L. Field · Warrenville, IL4 sharedRonald S. Weiss · Stickney, IL4 sharedMark Schlageter · Chicago, IL4 sharedHala Zeine · New York, NY4 sharedFaheem M. Hasnain · San Diego, CA4 sharedChristopher Savoie · Cambridge, MA4 sharedKerina Natasha Gopaul · New York, NY4 sharedRonald L. Davis · Warrenville, IL4 shared
Recent filings (24)
Joule Midco LLCNov 2025 · 11 co-filersJoule Employee Holdco LPNov 2025 · 11 co-filersJoule Employee Holdco LPNov 2025 · 11 co-filersJoule Midco LLCNov 2025 · 11 co-filersBlackthorne Sentiment Enhanced Fund, LLCSep 2024 · 13 co-filersSpark Topco Inc.Nov 2023 · 26 co-filersBlackthorne Sentiment Enhanced Fund, LLCSep 2023 · 13 co-filersSpark Topco Inc.Nov 2022 · 26 co-filersBlackthorne Sentiment Enhanced Fund, LLCSep 2022 · 13 co-filersCamelback Corp.Apr 2022 · 15 co-filersSpark Topco Inc.Feb 2022 · 23 co-filersTahoe Topco, Inc.Oct 2021 · 32 co-filersBlackthorne Sentiment Enhanced Fund, LLCSep 2021 · 16 co-filersSpark Topco Inc.Sep 2021 · 19 co-filersTahoe Topco, Inc.Sep 2021 · 7 co-filersSpark Topco Inc.Sep 2021 · 5 co-filersNexus Parent LLCMay 2021 · 22 co-filersNexus Management Aggregator LLCMay 2021 · 15 co-filersBlackthorne Sentiment Enhanced Fund, LLCOct 2020 · 16 co-filersClickLease, LLCJun 2020 · 10 co-filers$6.9MNexus Management Aggregator LLCMar 2020 · 6 co-filersClickLease, LLCOct 2019 · 10 co-filers$5.0MNexus Parent LLCOct 2019 · 6 co-filersTempo Holding Company, LLCSep 2017 · 14 co-filers
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Chad in the interactive graph →