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Insider Trading

Last Updated: 4 months, 1 week ago

Mark Mason has an estimated net worth of at least $26.5 million*, as of Oct. 29, 2025. They own 233,788 shares of C stock. They have sold 62,092 shares of C stock since 2021, for an estimated $4.9 million.

Mark Mason $C SEC Form 4 Insider Trading

Mark Mason has filed a total of 3 insider trades in $C since 2021. Their most recent trade was a sale of 1,627 shares, made on Feb 20, 2026. Their largest trade was a sale of 58,465 shares, made on Feb 14, 2025. We estimate that they now own 233,788 shares of $C, worth an estimated $21.6 million.



Insider Trading at $C

There have been a total of 38 insider trades reported at $C since 2021, with 0 shares purchased and 471,628 shares sold. The most active insider traders in $C stock have been Syed Shahmir Khaliq, Brent Mcintosh, and Johnbull Okpara. The most recent trade was a sale of 2,000 shares reported by Mark Mason (Chief Financial Officer), made on Feb 20, 2026.



History of Insider Stock Trades by Mark Mason

Company Ticker Purchase / Sale Shares Date Disclosed (EST)
C logo C Sale 1,627 Feb 20, 2026 Feb. 24, 2026, 5:09 p.m.
C logo C Sale 2,000 Feb 20, 2026 Feb. 24, 2026, 5:09 p.m.
C logo C Sale 58,465 Feb 14, 2025 Feb. 18, 2025, 5:30 p.m.




$C Executives and Stock Owners with Insider Trades



*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.