The A/S (Authorized Share Count) is a FIXED number of shares that the company can tap into (sell privately to raise cash, or use as leverage in lieu of cash)
Whenever shares are taken from the A/S and distributed, this increases the O/S (Outstanding Share Count)
A REVERSE split is a mathematical maneuver that increases the share price (in DRIO's case by a factor of 5) but REDUCES the amount of OUTSTANDING SHARES (also by a factor of 5)
So, the A/S remains the same as the O/S decreases.
This affords the company the ability to dilute even more shares from the A/S into the O/S
R/S , dilute , R/S, dilute etc
This is the precise reason we have so many stocks trading in the .000x range