About William Johnson
William Johnson is a director at Nisource.
Form D filings name William Johnson as a director at Terrestrial Energy.
William Johnson reports to the SEC as a director or officer of 6 public companies, including Terrestrial Energy (IMSR), Pg&e (PCG) and Pacific Gas & Electric.
William Johnson first appears on SEC filings in 2006.
Experience
This experience comes from SEC filings. The years are when the filings name William Johnson in the role, so the role may have started earlier or lasted longer.
NI
Nisource Inc.
Director
2022 – 2026 · Public company (NI)
PC
Pg&e Corp.
CEO and President
2019 – 2020 · Public company (PCG)
PC
Pacific Gas & Electric Co.
Director
2019 · Public company
DC
Duke Energy CORP
President & CEO; Director
2012 · Public company (DUK)
PI
Progress Energy Inc.
Chairman, President & CEO
2006 – 2012 · Public company (PGN)
Key Colleagues at Startups
The people William Johnson works with at each company, as listed on that company's latest Form D.
Terrestrial Energy Inc. · Form D, Jul 15, 2025
BT
Brian Thrasher
Executive officer
DL
David Leblanc
Executive officer and director
SI
Simon Irish
Chief Executive Officer and director
DH
David Hill
Director
RJ
Robert Jones
Director
FB
Fred Buckman
Director
HM
Hugh Macdiarmid
Director
CP
Charles Pardee
Director