Mason Mark
SEC insider (Form 3/4/5 filer). CIK 0001487290. Director at MICROSOFT CORP (MSFT) and 1 other issuer. 21 reported Form 4/5 transactions since Sep 2024; latest on Sep 10, 2026. Located in REDMOND, WA.
Companies Mason Mark has filed insider reports for
- MICROSOFT CORP (MSFT): Director
- CITIGROUP INC (C): Officer, Chief Financial Officer
Mason Mark
CIK: 0001487290
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (21 total)
- Sep 10, 2026MSFT
MICROSOFT CORP
AwardDirectRestricted Stock Units
1 shares- - Sep 5, 2026MSFT
MICROSOFT CORP
AwardDirectRestricted Stock Units
195 shares- - Jun 11, 2026MSFT
MICROSOFT CORP
AwardDirectRestricted Stock Units
1 shares- - Jun 5, 2026MSFT
MICROSOFT CORP
AwardDirectRestricted Stock Units
231 shares- - Feb 20, 2026C
CITIGROUP INC
AwardDirectPerformance Share Units
39.3K shares- - Feb 20, 2026C
CITIGROUP INC
SaleDirect2K shares at avg. $114.96$230K - Feb 20, 2026C
CITIGROUP INC
SaleDirect1.6K shares at avg. $114.40$186K - Feb 11, 2026C
CITIGROUP INC
AwardDirect52.4K shares- - Jan 30, 2026MSFT
MICROSOFT CORP
AwardDirect145 shares- - Jan 20, 2026C
CITIGROUP INC
Tax PaymentDirect29.2K shares at avg. $118.04$3.4M
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 10, 2026 |  MSFT MICROSOFT CORP | Award Restricted Stock Units | 1 | - | - | Direct |
| Sep 5, 2026 | MSFT MICROSOFT CORP | Award Restricted Stock Units | 195 | - | - | Direct |
| Jun 11, 2026 | MSFT MICROSOFT CORP | Award Restricted Stock Units | 1 | - | - | Direct |
| Jun 5, 2026 | MSFT MICROSOFT CORP | Award Restricted Stock Units | 231 | - | - | Direct |
| Feb 20, 2026 |  C CITIGROUP INC | Award Performance Share Units | 39,347 | - | - | Direct |
| Feb 20, 2026 | C CITIGROUP INC | Sale | 2,000 | $114.96 | $229,917 | Direct |
| Feb 20, 2026 | C CITIGROUP INC | Sale | 1,627 | $114.40 | $186,128 | Direct |
| Feb 11, 2026 | C CITIGROUP INC | Award | 52,367 | - | $0 | Direct |
| Jan 30, 2026 | MSFT MICROSOFT CORP | Award | 145 | - | $0 | Direct |
| Jan 20, 2026 | C CITIGROUP INC | Tax Payment | 29,210 | $118.04 | $3,447,915 | Direct |
1-10 of 21 transactions