Iridium promotes Vincent O'Neill to CFO and Timothy Last to executive vice president-sales and marketing, effective Jan. 1; they succeed, respectively, Thomas Fitzpatrick and Bryan Hartin, both retiring year-end … Davis Wright taps patent lawyer Alexander Hadjis, ex-Jenner & Block, as partner … Simon Gooch, ex-Accenture, joins Saviynt, cloud security provider, as senior vice president-expert services … Red River hires General Dynamics’ James Matney as senior vice president-solutions and chief technology officer-Government Technology Services … YourSix cloud security company appoints Ryan Gregory, former Axis Communications, as vice president-sales and growth … AppSentinels application programming interface security platform appoints Quick Heal Technologies’ Vishal Salvi as adviser to board.