Mark Mason

Mark Mason serves as officer: Chief Financial Officer at Citigroup Inc. (C). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

8 trades

$15.27M

Net Position

Net Seller

$15.27M

Companies Traded

Active Period

May 2021 – Feb 2026

8 total trades

Most Recent

Sell C

Feb 24, 2026 · $416.0K

Mark Mason's Insider Trading at Citigroup Inc. (C)

Buys

0 · $0.00

Sells

8 · $15.27M

Total Shares Bought

Total Shares Sold

192,776

C Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Feb 24, 2026	Sell	3,627	$114.71	$416.0K	235,789
Jan 20, 2026	Sell	29,210	$118.04	$3.45M	0
Feb 13, 2025	Sell	58,465	$83.21	$4.86M	0
Jan 20, 2025	Sell	28,711	$79.99	$2.30M	0
Jan 20, 2024	Sell	24,230	$51.52	$1.25M	0
Jan 20, 2023	Sell	18,125	$49.37	$894.8K	0
Jan 20, 2022	Sell	15,042	$64.24	$966.3K	0
May 7, 2021	Sell	15,366	$74.03	$1.14M	0