Highest-materiality recent filing
Director Andrew Liang resigns from Graphene & Solar board effective June 21, 2026
Andrew Liang resigned as Board member effective June 21, 2026.
GSTX subsidiary awarded $45M California tax credit for solar wafer manufacturing
Wholly owned subsidiary QSM USA received $45 million California Competes Tax Credit.
CFO David Halstead resigns; Kristine Woo appointed interim CFO
David Halstead resigned as CFO and board member effective April 21, 2026, with no disagreement over operations.
Graphene & Solar Technologies appoints Russell Krause to Board of Directors
Russell Krause appointed to the Board of Directors of Graphene & Solar Technologies effective April 14, 2026.
Graphene & Solar Technologies signs non-binding MOU for JV to manufacture silicon wafers
GSTX will own 75% equity in JV; ASMC owns 25%; GSTX funds $10M initial working capital.
GSTX signs non-binding MOU to acquire Henosis shares in Ausquartz Group
MOU with Henosis Ltd for GSTX to acquire Henosis' shareholding in Ausquartz Group Holdings.
Graphene & Solar Technologies moves principal executive offices to Phoenix, AZ
Moved principal executive offices to 11201 North Tatum Boulevard, Suite 300, Phoenix, AZ 85028 effective November 7, 2023.
CEO Roger Thomas May dies; Andrew Liang appointed interim CEO
CEO Roger Thomas May passed away on August 24, 2022.
Graphene & Solar appoints Rodney Young as Chairman, Roger May remains CEO
Rodney Young appointed Chairman of the Board effective December 20, 2021.
the family of Roger Thomas May, CEO, advised board members of his sudden passing late in the evening of August 24, 2022.
the board of directors approved the appointment of Dr. Andrew Liang as interim CEO, while the company commences identifying a permanent replacement to this position.
Roger May who he replaces as Chairman will continue in his role as CEO for the Company.
Rodney Young of Sydney, Australia, has been appointed as the new Chairman of the Company effective December 20th, 2021, until further notice.
Max materiality 0.85 · Median 0.50 · Most common event leadership