JR

Johannes Risseeuw

Damstra Holdings Limited | Executive Chairman, Executive Director
Mr Risseeuw has leadership and corporate experience. His previous experience includes roles such as Director of Shell Australia and Vice-President of Mergers & Acquisitions. He also served as Chief Investment Officer at Questus Energy, where he focused on acquiring oil and gas assets, and as Chief Operating Officer at Skilled Group Limited.

Companies and Roles

Company
Title
Tenure
Since
DTC
DTC
Damstra Holdings Limited
  • Executive Chairman
  • Executive Director
10yrs, 2mthApr 2016
SOP
SOP
Synertec Corporation Limited
  • Non-Executive Director
1yrs, 7mthOct 2024
SDV
SDV
SciDev Ltd
  • Non-Executive Director
1yrs, 2mthApr 2025

Holdings

Company
Last Notice
Direct Shares
Indirect Shares
Options
Convertibles
SDV
SDV
SciDev Ltd
29/04/26N/A250,000N/AN/A
SOP
SOP
Synertec Corporation Limited
10/04/262,426,2574,019,7004,000,000N/A
DTC
DTC
Damstra Holdings Limited
26/02/24N/A19,417,9927,477,895N/A

Transactions

Company
Date
Type
Amount
Price
Value
Notes
SDV
SDV
SciDev Ltd
29/04/26
Buy
100,000$0.996$99,613On-market trade
SOP
SOP
Synertec Corporation Limited
10/04/26
Buy
176,257$0.029$5,111On-market trade
SOP
SOP
Synertec Corporation Limited
08/04/26
Buy
500,000$0.029$14,410On-market trade
SDV
SDV
SciDev Ltd
26/02/26
Buy
80,000$0.239$19,112On-market trade
SDV
SDV
SciDev Ltd
15/12/25
Buy
70,000$0.430$30,100On-market trade