$ Value
$0
Shares
10,000
Price
$0
Filed
Mar 19
Insider
Name
CHESS ROBERT
Title
—
CIK
0001227886
Roles
Transaction Details
Transaction Date
2026-03-17
Code
M
Table
Derivative
Ownership
Direct
Equity Swap
No
Shares After
18,417
Footnotes
The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person on December 10, 2025. | The Reporting Person and his spouse are the sole trustees and the sole beneficiaries of the Chess 1997 Trust. | The option is immediately exercisable. 10% of the shares subject to the option vested on September 13, 2018, 15% of the shares subject to the option vested on March 24, 2019, and 1/48th of the shares subject to the option vested on each monthly anniversary thereafter, subject to the Reporting Person's continuous service through each vesting date.
Filing Info
CHESS ROBERT's History
| Date | Ticker | Type | Value |
|---|---|---|---|
| 2026-03-17 | TWST | M | $119K |
| 2026-03-17 | TWST | ▼ | $470K |
| 2026-03-17 | TWST | M | $0 |
| 2026-02-13 | TWST | ▼ | $105K |
| 2026-02-05 | TWST | A | $0 |
| 2025-09-30 | NKTR | A | $0 |
Other Insiders at TWST (90d)
| Insider | Bought | Sold | Last |
|---|---|---|---|
| CRANDELL KEITH | — | — | 2026-02-05 |
| RAGUSA ROBERT P | — | — | 2026-02-05 |
| JOHANNESSEN JAN | — | $105K | 2026-02-06 |
| CHESS ROBERT | — | $575K | 2026-03-17 |
| Chan Nelson | — | — | 2026-02-05 |
| BLAKE KATRYN | — | — | 2026-02-05 |
|
WERNER ROBERT F.
Chief Accounting Officer
|
— | $418K | 2026-03-06 |
|
Leproust Emily M.
Chief Executive Officer
|
— | $1.4M | 2026-04-22 |
|
Green Paula
SVP of Human Resources
|
— | $2.2M | 2026-03-20 |
|
Finn Patrick John
President and COO
|
— | $4.3M | 2026-02-23 |
|
Laponis Adam
Chief Financial Officer
|
— | $982K | 2026-04-17 |
| Starovasnik Melissa A. | — | $51K | 2026-04-01 |
|
Cho Dennis
See Remarks
|
— | $375K | 2026-03-20 |