R. Don Elsey

Chief Financial Officer, Emergent BioSolutions.

Companies

BullFrog AI Holdings, Inc.Board member Apr 18, 2023 to now¹
OpGen (United States)Board member Feb 25, 2019 to Jun 9, 2023²
REGENERX BIOPHARMACEUTICALS INCBoard member Sep 3, 2010 to May 19, 2022³
Lyra Therapeutics, Inc.Chief financial officer Apr 30, 2020 to Feb 10, 2021⁴
Senseonics (United States)Chief financial officer Mar 17, 2016 to Feb 5, 2018⁵
Emergent BioSolutionsChief financial officer Nov 14, 2006 to Mar 16, 2012⁶

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

OpGen (United States) CFOR3,075 shares⁷$10.8K at $3.50Jun 7, 2023
BullFrog AI Holdings, Inc. BFRG8,523 shares⁸$4.6K at $0.54Aug 22, 2025
REGENERX BIOPHARMACEUTICALS INC104,456 shares⁹May 19, 2022

As of each latest filing. The line shows shares held over time.

Recent filings

Aug 22, 2025Granted 2,813 shares of BullFrog AI Holdings, Inc.⁸
Aug 22, 2025Granted 5,710 shares of BullFrog AI Holdings, Inc.⁸
Jun 7, 2023Granted 1,500 shares of OpGen (United States)⁷
Jun 9, 2022Granted 15,000 shares of OpGen (United States)¹⁰

Sources

The numbers on this page point here. Each one links to the record it came from.

1
SEC EDGARBullFrog AI Holdings, Inc., Board member
2
SEC EDGAROpGen (United States), Board member
3
SEC EDGARREGENERX BIOPHARMACEUTICALS INC, Board member
4
SEC EDGARLyra Therapeutics, Inc., Chief financial officer
5
SEC EDGARSenseonics (United States), Chief financial officer
6
SEC EDGAREmergent BioSolutions, Chief financial officer
7
SEC EDGAROpGen (United States) shares after the filing of Jun 7, 2023
8
SEC EDGARBullFrog AI Holdings, Inc. shares after the filing of Aug 22, 2025
9
SEC EDGARREGENERX BIOPHARMACEUTICALS INC shares after the filing of May 19, 2022
10
SEC EDGARForm 4 filed Jun 10, 2022