Cecilia Lenk didn't become CEO of VSTR until 2017
As to the shares, the 10k released in August says for ownership:
Vaxstar LLC 271,371,454
Cecilia Lenk 20,000,000
Total for the two is 291,371,454
Now add the 25,000,000 Cecilia was awarded for salary and the total is 316,371,454 which is what the SC 13D filing says Vaxstar holds.
So it seems to me that she has combined her 45,000,000 shares with Vaxstar's. Seems logical to me that she's now the majority owner of Vaxstar, and the largest shareholder in VSTR