Latest filingAug 21, 2026Most recent Form 4
TWST
Twist Bioscience Corp
NasdaqHealthcareBiological Products, (No Diagnostic Substances)
Insider activity for last month from 08/03 to 09/03. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$00 buys
Total selling$1.10B8 sells
Net open-market-$1.10B2 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period10transactions
- S · Open-market sells · dominant8 · 80%
- M · Option exercise2 · 20%
Activity by reported role
A joint filing can contribute to multiple roles10transactions
- PRES · dominant9 · 90%
- SR1 · 10%
Distinct insiders active
Reporting-owner CIKs by month · peak Aug 2026 (2)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeFinn Patrick JohnCommon Stock · Direct
214,678Aug 18, 2026
Finn Patrick JohnStock Option (right to buy) · Direct
0Aug 18, 2026
Cho DennisCommon Stock · Direct
75,661Aug 19, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 03 → Sep 03
LessMore
Top insiders
By absolute net value across the selected period- FJ-$7.6M
- CD-$1.8M
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
TWST transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| TWST | Cho Dennis | SR | sale10b5-1 | 14.2k | -$184M | S | −2.9% | 08/21 | 08/19 | |
| TWST | Finn Patrick John | PRES | exercise10b5-1 | 23.3k | $0 | M | −3.1% | 08/20 | 08/18 | |
| TWST | Finn Patrick John | PRES | sale10b5-1 | 2.00k | -$24.5M | S | −3.1% | 08/20 | 08/18 | |
| TWST | Finn Patrick John | PRES | sale10b5-1 | 6.29k | -$76.1M | S | −3.1% | 08/20 | 08/18 | |
| TWST | Finn Patrick John | PRES | sale10b5-1 | 12.9k | -$154M | S | −3.1% | 08/20 | 08/18 | |
| TWST | Finn Patrick John | PRES | sale10b5-1 | 4.50k | -$53.5M | S | −3.1% | 08/20 | 08/18 | |
| TWST | Finn Patrick John | PRES | sale10b5-1 | 8.86k | -$104M | S | −3.1% | 08/20 | 08/18 | |
| TWST | Finn Patrick John | PRES | sale10b5-1 | 10.4k | -$121M | S | −3.1% | 08/20 | 08/18 | |
| TWST | Finn Patrick John | PRES | sale10b5-1 | 33.3k | -$386M | S | −3.1% | 08/20 | 08/18 | |
| TWST | Finn Patrick John | PRES | exercise10b5-1 | 23.3k | $158M | M | −3.1% | 08/20 | 08/18 |
Twist Bioscience Corp Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at Twist Bioscience Corp?
Cho Dennis, Finn Patrick John.
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
Cho Dennis reported a sale on Aug 19, 2026 valued at $184M. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $11,060,705.34. Sales can occur for many non-investment reasons.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.