Charles Thomas McMillen

Charles Thomas McMillen is a declared insider at 3 companies (board member); the most frequent names are Nexstar Media Group, Inc., Castellum, Inc. and FingerMotion, Inc. We count 48 filings; the first trade dates from 14 April 2017 and the latest from 25 March 2026.

On the open market, the record shows 3 purchases worth €137k and 16 sales worth €2.1M. Sales outweigh purchases by €2.0M. Unlike grants, an open-market purchase is paid for by the insider, at the market price. Besides market trades, the filings include 29 option exercises. 2026 to date brings no purchases and 2 sales.

Half of the purchases are above €14k and half below. Clusters matter here: 3 out of 3 purchases overlapped with buying by a colleague within 30 days. A cluster is several different insiders buying the same stock within a short window, a pattern studied more closely than a single purchase.

Most recently, on 27 March 2026, the filings show an open-market sale worth €18k in Castellum, Inc. The clock since the last published purchase (23 March 2023) now reads 1,311 days. Filings reach the SEC (Form 4) feed a median of 2 days after the trade. The legal deadline for a Form 4 is two business days after the transaction. A sale on its own says little: insiders also sell to pay tax, fund a purchase or diversify. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.