There are several SEC filings around the departure of the CEO in Sept 2019[1][2] that line up with with the timeline mentioned in this article. Here's the relevant snippet from the 8-K:

"On September 24, 2019, the Company and Mr. Wenig entered into a letter agreement regarding his departure (the “Wenig Letter”). Pursuant to the terms of the Wenig Letter, in exchange for his execution and non-revocation of a release of claims against the Company, the Company agreed to provide Mr. Wenig with (1) the payments required to be made to him under his letter agreement with the Company dated September 29, 2014 upon a termination without cause, which letter agreement was originally filed with..."

The key bit is that the CEO stepping down triggered a severance agreement for termination without cause. This lines up with the reporting that he engaged in unethical behavior and had to be forced out.

[1] https://www.sec.gov/ix?doc=/Archives/edgar/data/1065088/0001...

[2] https://www.sec.gov/Archives/edgar/data/1065088/000119312519...