Investor · Miami, FL

Frank B. Mattner

Open Frank in the network graph →

Filings

12

SEC Form D

Connections

44

co-filers

Capital

$24.2M

across filings

Active

Jan 2021

to Jul 2025

Most-connected co-filers (44)

David B. Buchsbaum · Miami, FL6 shared J. Michael Tierney, Iii · Bethlehem, PA5 shared David Powell · Boston, MA5 shared Yuan Cheng · Boston, MA5 shared Richard Rothfeld · Bethlehem, PA5 shared Dimitrios T. Koukoulomatis · WILMINGTON, NC5 shared Keith K. Caldwell · Bethlehem, PA5 shared Richard K. Thompson · Bethlehem, PA5 shared Garry J. Cooper, Jr · Chicago, IL5 shared Henry Kaestner · Durham, NC5 shared Matt Gustafson · West Des Moines, IA4 shared Agustin B. Fernandez Santana Iii · Miami, FL4 shared Jeffrey B. Madden · Miami, FL4 shared James J. Kattan · Grand Cayman, Cayman Islands4 shared Tim K. Pollack · Bethlehem, PA4 shared Charles Song · New York, NY4 shared Matthew Jung · New York, NY4 shared Walter B. Schmidt · Miami, FL4 shared Tim T. Burke · Waltham, MA3 shared Brad Nichol · Vancouver, British Columbia, Canada3 shared George A. Spears · Jackson, WY3 shared Mark J. Holst-Knudsen · Carolina Beach, NC3 shared Travis J. Sherbine · Carolina Beach, NC3 shared Kevin Kreisler · VIRGINIA CITY, NV3 shared

Recent filings (12)

ADvantage Therapeutics, Inc.Jul 2025 · 8 co-filers$25.4M ADvantage Therapeutics, Inc.Jul 2023 · 10 co-filers$25.4M Mikey's LLCApr 2023 · 14 co-filers$4.3M ADvantage Therapeutics, Inc.Jun 2022 · 8 co-filers$7.5M Stride Family Investments, L.P.Apr 2022 · 14 co-filers Mikey's LLCOct 2021 · 14 co-filers$1.3M ADvantage Therapeutics, Inc.Jun 2021 · 7 co-filers$10.0M ADvantage Therapeutics, Inc.Jun 2021 · 7 co-filers$10.0M Mikey's LLCApr 2021 · 14 co-filers$1.5M Mikey's LLCApr 2021 · 14 co-filers$1.0M Stride Family Investments, L.P.Apr 2021 · 14 co-filers Mikey's LLCJan 2021 · 13 co-filers$2.3M Stride Consumer Fund I Coinvest, L.P.Jan 2021 · 15 co-filers

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