In the other thread about this on here (from the first of four monthly buys) I pointed out this was done under a 10b5-1 trade.
Its perfectly legal, this is how insiders are able to execute buys.
Here's the form with the SEC:
https://www.sec.gov/Archives/edgar/data/1688568/000168856819000068/ml10b5-1.htm
However as @10oT0k4r-tly points out, this happened at the same time as his pre-programmed automated sale of more shares than he bought. The sale is part of the same annual pattern Mikey has run since joining CSC and again is a way of offloading his annual award of shares without it being considered insider trading. He sells the previous year's award over the next 12 months in equal chunks at set intervals to not be accused of insider trading or scaring the market. Perfectly normal.
Two things though:
1) The consistent sale of his shares every year says what about his confidence in the business? I've said this many times, if he is so confident, why not have a significant holding on the table? Why does nobody ever point this out?
2) Mikey has never ever bought CSC/DXC shares with his own money before. This combined with the greater number sold at the same time as this purchase is a clear indicator that he is trying to show "confidence" to the market. The story of him making 4 x monthly buys is reported in the financial press and will be picked up on. Again, $1 million over four months is chicken feed to Mikey - he could afford to have these go down the toilet and still probably have several hundred million in the bank. He joined CSC FY13 and hasn't earned less than about $40 million a year for 7 years, sometimes a lot more than 40 too, especially with the sale of CSC's NPS where he got a massive shareholder payout on top.
As with all attempts to small scale manipulate stock price, its done little to change the price though. Both continuing revenue falls and systemic problems with the stock market caused by the US-China trade war massively offset what his dabbling could ever achieve.