Frank M. Semple

Frank M. Semple is a declared insider at 2 companies (board member); the most frequent names are MPLX LP and Marathon Petroleum Corp. In total, 60 filings cover trades dated from 3 May 2021 to 14 August 2026.

On the market, this insider has only sold: 2 sales, €1.6M in total. Besides market trades, the filings include 58 share grants.

On 18 August 2026 came the latest disclosure, a share grant in MPLX LP. 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. Keep in mind that insiders sell for many reasons unrelated to the outlook, from tax bills to estate planning. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.