ALT5Sigma Appoints Former GSR Executive as Chief Financial Officer BlockBeats News: On August 15th, ALT5 Sigma (ALTS), a US listed company that raised $1.5 billion to launch WLFI Treasury, announced the appointment of Jonathan Hugh as Chief Financial Officer. Jonathan has over 25 years of senior financial and business leadership experience in digital asset, technology, energy, and commodity trading, having served as the Chief Financial Officer of global market maker GSR International and institutional custodian Zodia Custody.