Matt Zmigrosky

Matt Zmigrosky, listed as senior executive, has filed trades across 3 companies (mainly through SEC (Form 4)), most often in Diamondback Energy, Inc., Rattler Midstream LP and Viper Energy Partners LP. Between 1 March 2019 and 15 September 2026, the trades on record add up to 46 filings.

Both buying and selling appear: 1 purchase worth €47k, against 15 sales worth €10.9M. The net balance comes to €10.8M on the selling side. Unlike grants, an open-market purchase is paid for by the insider, at the market price. The rest of the record consists of 28 share grants. So far in 2026, the count stands at no purchases and 6 sales.

Most recently, on 17 September 2026, the filings show an open-market sale worth €244k in Diamondback Energy, Inc. The latest purchase dates back some time: it was published 2,704 days ago, on 29 May 2019. Filings reach the SEC (Form 4) feed a median of 2 days after the trade. US insiders must file a Form 4 within two business days of a trade. Selling is not necessarily a view on the stock: liquidity needs and diversification are common motives. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.