Mark Mason
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
Award(A)DirectRestricted Stock Units
1 shares- - Sep 5, 2026MSFT
MICROSOFT CORP
Award(A)DirectRestricted Stock Units
195 shares- - Jun 11, 2026MSFT
MICROSOFT CORP
Award(A)DirectRestricted Stock Units
1 shares- - Jun 5, 2026MSFT
MICROSOFT CORP
Award(A)DirectRestricted Stock Units
231 shares- - Feb 20, 2026C
CITIGROUP INC
Sale(S)Direct2K shares at avg. $114.96$230K - Feb 20, 2026C
CITIGROUP INC
Sale(S)Direct1.6K shares at avg. $114.40$186K - Feb 20, 2026C
CITIGROUP INC
Award(A)DirectPerformance Share Units
39.3K shares- - Feb 11, 2026C
CITIGROUP INC
Award(A)Direct52.4K shares- - Jan 30, 2026MSFT
MICROSOFT CORP
Award(A)Direct145 shares- - Jan 20, 2026C
CITIGROUP INC
Tax Payment(F)Direct29.2K shares at avg. $118.04$3.4M - Dec 4, 2025MSFT
MICROSOFT CORP
Award(A)Direct130 shares- - Sep 10, 2025MSFT
MICROSOFT CORP
Award(A)Direct125 shares- - Jun 10, 2025MSFT
MICROSOFT CORP
Award(A)Direct132 shares- - Feb 21, 2025C
CITIGROUP INC
Award(A)DirectPerformance Share Unit
34.8K shares- - Feb 14, 2025C
CITIGROUP INC
Sale(S)Direct58.5K shares at avg. $83.21$4.9M - Feb 14, 2025C
CITIGROUP INC
Gift(G)Direct3.1K shares- - Feb 13, 2025C
CITIGROUP INC
Award(A)Direct51.9K shares- - Jan 31, 2025MSFT
MICROSOFT CORP
Award(A)Direct151 shares- - Jan 20, 2025C
CITIGROUP INC
Tax Payment(F)Direct28.7K shares at avg. $79.99$2.3M - Dec 9, 2024MSFT
MICROSOFT CORP
Award(A)Direct132 shares- - Sep 6, 2024MSFT
MICROSOFT CORP
Award(A)Direct146 shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 10, 2026 |  MSFT MICROSOFT CORP | Award(A) Restricted Stock Units | 1 | - | - | Direct |
| Sep 5, 2026 | MSFT MICROSOFT CORP | Award(A) Restricted Stock Units | 195 | - | - | Direct |
| Jun 11, 2026 | MSFT MICROSOFT CORP | Award(A) Restricted Stock Units | 1 | - | - | Direct |
| Jun 5, 2026 | MSFT MICROSOFT CORP | Award(A) Restricted Stock Units | 231 | - | - | Direct |
| Feb 20, 2026 |  C CITIGROUP INC | Sale(S) | 2,000 | $114.96 | $229,917 | Direct |
| Feb 20, 2026 | C CITIGROUP INC | Sale(S) | 1,627 | $114.40 | $186,128 | Direct |
| Feb 20, 2026 | C CITIGROUP INC | Award(A) Performance Share Units | 39,347 | - | - | Direct |
| Feb 11, 2026 | C CITIGROUP INC | Award(A) | 52,367 | - | $0 | Direct |
| Jan 30, 2026 | MSFT MICROSOFT CORP | Award(A) | 145 | - | $0 | Direct |
| Jan 20, 2026 | C CITIGROUP INC | Tax Payment(F) | 29,210 | $118.04 | $3,447,915 | Direct |
| Dec 4, 2025 | MSFT MICROSOFT CORP | Award(A) | 130 | - | - | Direct |
| Sep 10, 2025 | MSFT MICROSOFT CORP | Award(A) | 125 | - | - | Direct |
| Jun 10, 2025 | MSFT MICROSOFT CORP | Award(A) | 132 | - | - | Direct |
| Feb 21, 2025 | C CITIGROUP INC | Award(A) Performance Share Unit | 34,761 | - | - | Direct |
| Feb 14, 2025 | C CITIGROUP INC | Sale(S) | 58,465 | $83.21 | $4,864,791 | Direct |
| Feb 14, 2025 | C CITIGROUP INC | Gift(G) | 3,073 | - | - | Direct |
| Feb 13, 2025 | C CITIGROUP INC | Award(A) | 51,872 | - | - | Direct |
| Jan 31, 2025 | MSFT MICROSOFT CORP | Award(A) | 151 | - | - | Direct |
| Jan 20, 2025 | C CITIGROUP INC | Tax Payment(F) | 28,711 | $79.99 | $2,296,612 | Direct |
| Dec 9, 2024 | MSFT MICROSOFT CORP | Award(A) | 132 | - | $0 | Direct |
| Sep 6, 2024 | MSFT MICROSOFT CORP | Award(A) | 146 | - | $0 | Direct |
1-21 of 21 transactions
About Mason Mark
Mason Mark (SEC CIK 0001487290) files insider reports with the SEC as Director of MICROSOFT CORP (MSFT) and Chief Financial Officer of CITIGROUP INC (C).
Signal8 holds 17 ownership filings by Mason Mark, all Form 4s, filed between Sep 9, 2024 and Sep 11, 2026. Those filings report 21 transactions, from Sep 6, 2024 to Sep 10, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Mason Mark's filings is in REDMOND, WA.
Recent filings by Mason Mark
- Sep 10, 2026: Grant or award of MSFT derivative securities (Form 4, code A).
- Sep 5, 2026: Grant or award of MSFT derivative securities (Form 4, code A).
- Jun 11, 2026: Grant or award of MSFT derivative securities (Form 4, code A).
- Jun 5, 2026: Grant or award of MSFT derivative securities (Form 4, code A).
- Feb 20, 2026: Open-market sales of C shares (2 lines, Form 4, code S).
Other insiders filing for MICROSOFT CORP (MSFT)
- Coleman Amy, EVP, Chief Human Resources Off
- Hood Amy, EVP, Chief Financial Officer
- SMITH BRADFORD L, Vice Chair and President
- Numoto Takeshi, EVP, Chief Marketing Officer
- Althoff Judson, EVP, Chief Commercial Officer
- Jolla Alice L., Chief Accounting Officer