William M. Byerley

William M. Byerley is a declared insider of Matador Resources Co (board member), with filings sourced from SEC (Form 4). Over a trading history stretching from 4 June 2021 to 11 June 2026, the count stands at 8 filings.

On the market, this insider has only ever bought: 2 purchases, €16k in total. A purchase on the market is a deliberate choice to commit personal money, which is why it draws more attention than a grant. The rest of the record consists of 6 share grants.

Most recently, on 15 June 2026, the filings show a share grant in Matador Resources Co. The last insider purchase was made public on 13 September 2023, 1,131 days ago. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 4 days. Section 16 rules allow two business days to file each Form 4. This summary is built from SEC (Form 4) disclosures alone and does not predict where the share price will go.