Robert F. Werner insider trades: Twist Bioscience (TWST) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Robert reports to the SEC
Open-market buys and sales
49 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Nov 3, 2026 | TWST | ↓ Sell | 148 | $135.40 | $20K | Direct | Nov 5, 2026 (2d) |
| Oct 2, 2026 | TWST | ↓ Sell | 1,482 | $188.88 | $280K | Direct | Oct 5, 2026 (3d) |
| Aug 24, 2026 | TWST | ↓ Sell | 1,523 | $140.02 | $213K | Direct | Aug 25, 2026 (1d) |
| Aug 3, 2026 | TWST | ↓ Sell | 167 | $85.32 | $14K | Direct | Aug 5, 2026 (2d) |
| Jun 8, 2026 | TWST | ↓ Sell | 1,359 | $69.20 | $94K | Direct | Jun 10, 2026 (2d) |
| May 26, 2026 | TWST | ↓ Sell | 800 | $62.48 | $50K | Direct | May 28, 2026 (2d) |
| May 21, 2026 | TWST | ↓ Sell | 688 | $53.26 | $37K | Direct | May 26, 2026 (5d) |
| May 8, 2026 | TWST | ↓ Sell | 4,961 | $56.88 | $282K | Direct | May 12, 2026 (4d) |
| May 4, 2026 | TWST | ↓ Sell | 164 | $57.15 | $9K | Direct | May 6, 2026 (2d) |
| Mar 6, 2026 | TWST | ↓ Sell | 246 | $46.43 | $11K | Direct | Mar 10, 2026 (4d) |
| Feb 23, 2026 | TWST | ↓ Sell | 1,693 | $46.71 | $79K | Direct | Feb 25, 2026 (2d) |
| Feb 4, 2026 | TWST | ↓ Sell | 7,175 | $45.67 | $328K | Direct | Feb 5, 2026 (1d) |
| Dec 8, 2025 | TWST | ↓ Sell | 230 | $32.88 | $8K | Direct | Dec 10, 2025 (2d) |
| Nov 24, 2025 | TWST | ↓ Sell | 1,051 | $28.23 | $30K | Direct | Nov 25, 2025 (1d) |
| Nov 3, 2025 | TWST | ↓ Sell | 160 | $32.08 | $5K | Direct | Nov 5, 2025 (2d) |
| Oct 30, 2025 | TWST | ↓ Sell | 1,016 | $31.44 | $32K | Direct | Nov 3, 2025 (4d) |
| Oct 6, 2025 | TWST | ↓ Sell | 2,041 | $32.19 | $66K | Direct | Oct 8, 2025 (2d) |
| Sep 8, 2025 | TWST | ↓ Sell | 235 | $25.76 | $6K | Direct | Sep 10, 2025 (2d) |
| Aug 25, 2025 | TWST | ↓ Sell | 853 | $27.69 | $24K | Direct | Aug 27, 2025 (2d) |
| Aug 21, 2025 | TWST | ↓ Sell | 238 | $25.96 | $6K | Direct | Aug 25, 2025 (4d) |
| Aug 4, 2025 | TWST | ↓ Sell | 186 | $28.36 | $5K | Direct | Aug 6, 2025 (2d) |
| Jun 6, 2025 | TWST | ↓ Sell | 225 | $31.75 | $7K | Direct | Jun 10, 2025 (4d) |
| May 23, 2025 | TWST | ↓ Sell | 839 | $27.73 | $23K | Direct | May 28, 2025 (5d) |
| May 21, 2025 | TWST | ↓ Sell | 242 | $29.75 | $7K | Direct | May 23, 2025 (2d) |
| May 5, 2025 | TWST | ↓ Sell | 162 | $37.65 | $6K | Direct | May 7, 2025 (2d) |
| Mar 6, 2025 | TWST | ↓ Sell | 241 | $40.91 | $10K | Direct | Mar 10, 2025 (4d) |
| Feb 24, 2025 | TWST | ↓ Sell | 1,183 | $42.27 | $50K | Direct | Feb 25, 2025 (1d) |
| Feb 3, 2025 | TWST | ↓ Sell | 185 | $49.35 | $9K | Direct | Feb 5, 2025 (2d) |
| Dec 6, 2024 | TWST | ↓ Sell | 226 | $52.70 | $12K | Direct | Dec 10, 2024 (4d) |
| Nov 25, 2024 | TWST | ↓ Sell | 789 | $44.20 | $35K | Direct | Nov 27, 2024 (2d) |
| Nov 6, 2024 | TWST | ↓ Sell | 1,448 | $44.60 | $65K | Direct | Nov 8, 2024 (2d) |
| Nov 4, 2024 | TWST | ↓ Sell | 156 | $41.56 | $6K | Direct | Nov 6, 2024 (2d) |
| Sep 6, 2024 | TWST | ↓ Sell | 240 | $39.16 | $9K | Direct | Sep 10, 2024 (4d) |
| Aug 23, 2024 | TWST | ↓ Sell | 813 | $43.14 | $35K | Direct | Aug 27, 2024 (4d) |
| Aug 5, 2024 | TWST | ↓ Sell | 168 | $39.93 | $7K | Direct | Aug 7, 2024 (2d) |
| Jun 6, 2024 | TWST | ↓ Sell | 242 | $51.33 | $12K | Direct | Jun 10, 2024 (4d) |
| May 23, 2024 | TWST | ↓ Sell | 3,361 | $42.32 | $142K | Direct | May 28, 2024 (5d) |
| May 3, 2024 | TWST | ↓ Sell | 132 | $37.13 | $5K | Direct | May 7, 2024 (4d) |
| Mar 6, 2024 | TWST | ↓ Sell | 181 | $37.43 | $7K | Direct | Mar 8, 2024 (2d) |
| May 16, 2023 | NVTA | ↓ Sell | 21,559 | $1.20 | $26K | Direct | May 18, 2023 (2d) |
| Aug 25, 2022 | NVTA | ↓ Sell10b5-1 | 1,350 | $3.45 | $5K | Direct | Aug 29, 2022 (4d) |
| Aug 16, 2022 | NVTA | ↓ Sell | 3,252 | $4.55 | $15K | Direct | Aug 18, 2022 (2d) |
| May 19, 2022 | NVTA | ↓ Sell | 10,102 | $3.70 | $37K | Direct | May 19, 2022 (0d) |
| Aug 19, 2021 | NVTA | ↓ Sell | 15,337 | $24.86 | $381K | Direct | Aug 20, 2021 (1d) |
| Aug 16, 2021 | NVTA | ↓ Sell | 3,012 | $25.42 | $77K | Direct | Aug 18, 2021 (2d) |
| May 20, 2021 | NVTA | ↓ Sell | 7,116 | $27.62 | $197K | Direct | May 24, 2021 (4d) |
| Nov 24, 2020 | NVTA | ↓ Sell | 2,427 | $48.92 | $119K | Direct | Nov 27, 2020 (3d) |
| Sep 10, 2020 | NVTA | ↓ Sell | 246 | $33.87 | $8K | Direct | Sep 14, 2020 (4d) |
| Aug 19, 2020 | NVTA | ↓ Sell | 1,740 | $32.10 | $56K | Direct | Aug 20, 2020 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other TWST insiders
Open-market trades in the last 12 months
About Robert F. Werner's insider trades
Robert F. Werner is Chief Accounting Officer at Twist Bioscience (TWST). Since Aug 19, 2020, Robert has reported no open-market purchases and 49 sales worth $3.0M on SEC Form 4. In the last 12 months: 14 sales ($1.5M).
1 sale (0% of the value sold) was made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so it says little about how the insider sees the stock today.
Their filings also include grants and awards (14 filings), shares withheld for taxes (2 filings), gifts (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every TWST insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.