Transactions
8
Insider / STATE STREET CORP
TAHIRI MOSTAPHA
EVP and COO at STATE STREET CORP
- Company
- STATE STREET CORP
- Ticker
- STT
- First filing on record
- November 18, 2025
- Latest trade on record
- August 14, 2026
- SEC filings
- EDGAR ↗
TAHIRI MOSTAPHA, EVP and COO at STATE STREET CORP, has disclosed 8 transactions in STT since November 18, 2025: 0 purchases (0 open-market buys) and 6 sales, worth about $2.0M at the reported prices. The latest was filed August 18, 2026, 4 days after the trade; 3 filings were late against the 2-business-day Form 4 deadline.
Open-market buys
0
Sales
6
Avg. disclosure lag
4.1d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months TAHIRI MOSTAPHA made no purchases and 6 sales worth $2.0M, plus 2 other transactions. Dot size is the dollar amount.
Portfolio mix
Which stocks does this person trade most? Tile size is dollars traded, all time on record.
TAHIRI MOSTAPHA has traded 1 stock on record; the largest by dollars is STT.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
1 of 6 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| F | Shares withheld for tax | 5 | 4,127 | $533K |
| A | Grant or award | 2 | 24,452 | — |
| S | Open-market sale | 1 | 9,611 | $1.5M |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 7 | 0 | 5 · $2.0M |
| 2025 | 1 | 0 | 1 · $8,646 |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| STT | Sell F | August 14, 2026 | August 18, 2026 | 4d | 54 | $192 | $10K | Form 4 ↗ | ||
| STT | Sell F | May 15, 2026 | May 19, 2026 | 4d | 91 | $153 | $14K | Form 4 ↗ | ||
| STT | Sell S | April 22, 2026 | April 24, 2026 | 2d | 9,611 | $153 | $1.5M | Form 4 ↗ | ||
| STT | Other A | February 26, 2026 | March 2, 2026 | 4d | 14,259 | — | — | Form 4 ↗ | ||
| STT | Sell F | February 13, 2026 | February 18, 2026 | 5d | 2,269 | $128 | $290K | late | Form 4 ↗ | |
| STT | Sell F | February 13, 2026 | February 18, 2026 | 5d | 1,639 | $128 | $210K | late | Form 4 ↗ | |
| STT | Other A | February 13, 2026 | February 18, 2026 | 5d | 10,193 | — | — | late | Form 4 ↗ | |
| STT | Sell F | November 14, 2025 | November 18, 2025 | 4d | 74 | $117 | $8,646 | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| August 18, 2026 | Form 4 | 0000093751-26-000571 | 1 | published | EDGAR ↗ |
| May 19, 2026 | Form 4 | 0000093751-26-000324 | 1 | published | EDGAR ↗ |
| April 24, 2026 | Form 4 | 0000093751-26-000192 | 1 | published | EDGAR ↗ |
| March 2, 2026 | Form 4 | 0000093751-26-000144 | 1 | published | EDGAR ↗ |
| February 18, 2026 | Form 4 | 0000093751-26-000120 | 3 | published | EDGAR ↗ |
| November 18, 2025 | Form 4 | 0000093751-25-000659 | 1 | published | EDGAR ↗ |
Other insiders at STATE STREET CORP
- O HANLEY RONALD P Chairman, CEO and President 29 rows
- Meaney William L Director 17 rows
- Gordon Susan M. Director 15 rows
- RICHARDS MICHAEL L EVP and Senior Advisor 12 rows
- Horgan Kathryn M Executive Vice President 8 rows
- AMBROSIUS JOERG Executive Vice President 7 rows
- Hu W. Bradford EVP and Chief Risk Officer 6 rows
- PLANSKY JOHN Executive Vice President 6 rows
- Schaefer Elizabeth SVP, Chief Accounting Officer 6 rows
- Hung Yie-Hsin EVP; President and CEO of SSGA 3 rows
Everyone on file, with contracts and lobbying under the company's name: STATE STREET CORP.
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 6 | 8 | November 18, 2025 | August 18, 2026 | Form 4 list on EDGAR |
Site built October 27, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.