Investor · Janesville, WI

Gregory R. Piefer

Open Gregory in the network graph →

Filings

82

SEC Form D

Connections

314

co-filers

Capital

$318.9M

across filings

Active

Apr 2016

to Mar 2022

Most-connected co-filers (314)

Thomas R. Mackie · Middleton, WI32 shared Donald Whelley · Monona, WI25 shared William Phillips · Monona, WI19 shared Terry Kelly · Monona, WI19 shared Evan Sengbusch · Monona, WI19 shared Anton M. Asmuth · Janesville, WI18 shared Darin R. Janecek · Janesville, WI16 shared Robert J. O'Shea · Greenwich, CT14 shared Gregory A. Smith · Janesville, WI14 shared Lime Rock Management Lp · Westport, CT14 shared Lime Rock Management Lp · Westport, CT14 shared Jonathan M. Farber · Westport, CT13 shared Susan M. Oswald · Westport, CT13 shared Edward A. Mule · Greenwich, CT13 shared John T. Reynolds · Westport, CT13 shared Eric G. Schutt · JANESVILLE, WI13 shared David A. Newberg · White Plains, NY12 shared Katrina M. Pitas · Janesville, WI12 shared Jason M. Williams · London, United Kingdom11 shared Chih Cheung · New York, NY11 shared William A. Landman · Wynnewood, PA10 shared Ross Radel · Monona, WI10 shared Ramez F. Sousou · New York, NY10 shared Julia J. Ji · New York, NY10 shared

Recent filings (82)

Illuminated Holdings, Inc.Apr 2025 · 36 co-filers$125.0M Tempo Income Fund LLCJun 2024 · 13 co-filers$50.0M Illuminated Holdings, Inc.Oct 2023 · 33 co-filers$125.0M Tempo Income Fund LLCJun 2023 · 13 co-filers$100.0M Triumvira Immunologics Inc.Sep 2022 · 32 co-filers$59.7M Illuminated Holdings, Inc.Sep 2022 · 36 co-filers Tempo Income Fund LLCJun 2022 · 13 co-filers$100.0M Triumvira Immunologics Inc.Apr 2022 · 32 co-filers$35.8M Lime Rock Resources V-A, L.P.Mar 2022 · 25 co-filers Triumvira Immunologics Inc.Jan 2022 · 32 co-filers$26.8M Lime Rock Partners VI AF, L.P.Nov 2021 · 12 co-filers Lime Rock Partners VI AF-C, L.P.Nov 2021 · 12 co-filers LR-San Jacinto Minerals III Coinvestment, L.P.Nov 2021 · 12 co-filers LRR Pecos Valley Coinvestment, L.P.Oct 2021 · 24 co-filers Tempo Income Fund LLCJul 2021 · 13 co-filers$50.0M Tempo Income Fund LLCJul 2021 · 13 co-filers$50.0M Illuminated Holdings, Inc.Jun 2021 · 33 co-filers$150.0M Tempo Income Fund LLCMay 2021 · 13 co-filers$100.0M Triumvira Immunologics Inc.May 2021 · 29 co-filers$16.2M Illuminated Holdings, Inc.Apr 2021 · 32 co-filers$131.7M Lime Rock Resources V-A, L.P.Jan 2021 · 25 co-filers Illuminated Holdings, Inc.Nov 2020 · 32 co-filers$50.0M Illuminated Holdings, Inc.Jul 2020 · 32 co-filers$40.0M Illuminated Holdings, Inc.May 2020 · 32 co-filers$40.0M PHOENIX NUCLEAR HOLDING CoMar 2020 · 33 co-filers$10.0M

Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Gregory in the interactive graph →