TAHIRI MOSTAPHA
SEC insider (Form 3/4/5 filer). CIK 0001818588. EVP and COO at STATE STREET CORP (STT). 16 reported Form 4/5 transactions since Sep 2024; latest on Aug 14, 2026. Located in BOSTON, MA.
Companies TAHIRI MOSTAPHA has filed insider reports for
- STATE STREET CORP (STT): Officer, EVP and COO
TAHIRI MOSTAPHA
CIK: 0001818588
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)2 (12.5%)
Position reduction
Option Exercises (M)0 (0.0%)
Derivative conversions
Awards (A)4 (25.0%)
Compensation grants
Other (G, F, J, C, D, …)10 (62.5%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
STT
STATE STREET CORP
Officer
Discretionary Trading P&L
Holdings
Transaction History (16 total)
- Aug 14, 2026STT
STATE STREET CORP
Tax PaymentDirect54 shares at avg. $191.74$10K - May 15, 2026STT
STATE STREET CORP
Tax PaymentDirect91 shares at avg. $152.85$14K - Apr 22, 2026STT
STATE STREET CORP
SaleDirect9.6K shares at avg. $152.93$1.5M - Feb 26, 2026STT
STATE STREET CORP
AwardDirect14.3K shares- - Feb 13, 2026STT
STATE STREET CORP
AwardDirect10.2K shares- - Feb 13, 2026STT
STATE STREET CORP
Tax PaymentDirect2.3K shares at avg. $127.97$290K - Feb 13, 2026STT
STATE STREET CORP
Tax PaymentDirect1.6K shares at avg. $127.97$210K - Nov 14, 2025STT
STATE STREET CORP
Tax PaymentDirect74 shares at avg. $116.84$9K - Aug 15, 2025STT
STATE STREET CORP
Tax PaymentDirect70 shares at avg. $111.07$8K - May 15, 2025STT
STATE STREET CORP
Tax PaymentDirect50 shares at avg. $98.20$5K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Aug 14, 2026 | STT STATE STREET CORP | Tax Payment | 54 | $191.74 | $10,354 | Direct |
| May 15, 2026 | STT STATE STREET CORP | Tax Payment | 91 | $152.85 | $13,909 | Direct |
| Apr 22, 2026 | STT STATE STREET CORP | Sale | 9,611 | $152.93 | $1,469,810 | Direct |
| Feb 26, 2026 | STT STATE STREET CORP | Award | 14,259 | - | $0 | Direct |
| Feb 13, 2026 | STT STATE STREET CORP | Award | 10,193 | - | $0 | Direct |
| Feb 13, 2026 | STT STATE STREET CORP | Tax Payment | 2,269 | $127.97 | $290,364 | Direct |
| Feb 13, 2026 | STT STATE STREET CORP | Tax Payment | 1,639 | $127.97 | $209,743 | Direct |
| Nov 14, 2025 | STT STATE STREET CORP | Tax Payment | 74 | $116.84 | $8,646 | Direct |
| Aug 15, 2025 | STT STATE STREET CORP | Tax Payment | 70 | $111.07 | $7,775 | Direct |
| May 15, 2025 | STT STATE STREET CORP | Tax Payment | 50 | $98.20 | $4,910 | Direct |
1-10 of 16 transactions