Mark C. Thurmond

Mark C. Thurmond discloses dealings in Tenable Holdings, Inc. to SEC (Form 4). Over a trading history stretching from 17 November 2022 to 24 August 2026, the count stands at 64 filings.

Sales make up the whole of the open-market record (23 sales, €3.8M). The rest of the record consists of 6 share grants and 35 option exercises.

The latest filing, published on 25 August 2026, reports an option exercise in Tenable Holdings, Inc. Typically, a trade is published a median of 2 days after it takes place. Section 16 rules allow two business days to file each Form 4. 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.