Robert Chess 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
51 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 7, 2026 | TWST | ↓ Sell | 18,417 | $110.89 | $2.0M | Direct | Aug 11, 2026 (4d) |
| Mar 17, 2026 | TWST | ↓ Sell | 10,000 | $47.00 | $470K | Direct | Mar 19, 2026 (2d) |
| Feb 13, 2026 | TWST | ↓ Sell | 2,184 | $48.26 | $105K | Direct | Feb 18, 2026 (5d) |
| Feb 7, 2025 | TWST | ↓ Sell | 2,940 | $53.13 | $156K | Direct | Feb 11, 2025 (4d) |
| Jan 7, 2025 | TWST | ↓ Sell10b5-1 | 5,000 | $50.00 | $250K | Direct | Jan 10, 2025 (3d) |
| Dec 5, 2024 | TWST | ↓ Sell10b5-1 | 3,504 | $51.85 | $182K | Direct | Dec 30, 2024 (25d) |
| Nov 11, 2024 | TWST | ↓ Sell | 3,600 | $47.26 | $170K | Direct | Nov 13, 2024 (2d) |
| Jun 14, 2024 | NKTR | ↓ Sell | 19,500 | $1.20 | $23K | Direct | Jun 14, 2024 (0d) |
| Feb 8, 2024 | TWST | ↓ Sell | 4,110 | $34.98 | $144K | Direct | Feb 9, 2024 (1d) |
| Sep 22, 2022 | NKTR | ↓ Sell | 10,200 | $0.67 | $7K | Direct | Sep 20, 2023 (363d) |
| Sep 22, 2022 | NKTR | ↓ Sell | 5,100 | $3.19 | $16K | Direct | Sep 26, 2022 (4d) |
| Feb 4, 2022 | TWST | ↓ Sell | 253 | $58.88 | $15K | Direct | Feb 8, 2022 (4d) |
| Nov 1, 2021 | TWST | ↓ Sell | 4,000 | $120.15 | $481K | Direct | Nov 3, 2021 (2d) |
| Oct 21, 2021 | TWST | ↓ Sell | 3,700 | $120.15 | $445K | Direct | Oct 25, 2021 (4d) |
| Oct 19, 2021 | TWST | ↓ Sell | 300 | $120.00 | $36K | Direct | Oct 21, 2021 (2d) |
| Sep 22, 2021 | NKTR | ↓ Sell | 4,600 | $17.94 | $83K | Direct | Sep 24, 2021 (2d) |
| Sep 10, 2021 | TWST | ↓ Sell | 4,000 | $120.23 | $481K | Direct | Sep 14, 2021 (4d) |
| Sep 9, 2021 | NKTR | ↓ Sell | 18,279 | $16.01 | $293K | Direct | Sep 10, 2021 (1d) |
| Jul 22, 2021 | NKTR | ↓ Sell | 5,721 | $16.81 | $96K | Direct | Jul 22, 2021 (0d) |
| Jul 12, 2021 | TWST | ↓ Sell | 4,000 | $125.91 | $504K | Direct | Jul 14, 2021 (2d) |
| Jun 23, 2021 | TWST | ↓ Sell | 4,000 | $120.10 | $480K | Direct | Jun 25, 2021 (2d) |
| May 12, 2021 | NKTR | ↓ Sell | 8,000 | $19.34 | $155K | Direct | May 14, 2021 (2d) |
| Apr 14, 2021 | NKTR | ↓ Sell | 8,000 | $18.98 | $152K | Direct | Apr 16, 2021 (2d) |
| Feb 5, 2021 | TWST | ↓ Sell | 706 | $159.54 | $113K | Direct | Feb 9, 2021 (4d) |
| Sep 25, 2020 | NKTR | ↓ Sell | 5,500 | $17.75 | $98K | Direct | Sep 25, 2020 (0d) |
| Sep 8, 2020 | NKTR | ↓ Sell | 8,000 | $18.53 | $148K | Direct | Sep 10, 2020 (2d) |
| Jul 8, 2020 | NKTR | ↓ Sell | 8,000 | $24.58 | $197K | Direct | Jul 10, 2020 (2d) |
| Apr 15, 2020 | NKTR | ↓ Sell | 8,000 | $18.38 | $147K | Direct | Apr 17, 2020 (2d) |
| Mar 11, 2020 | NKTR | ↓ Sell | 8,000 | $16.79 | $134K | Direct | Mar 13, 2020 (2d) |
| Feb 12, 2020 | NKTR | ↓ Sell | 8,000 | $23.50 | $188K | Direct | Feb 14, 2020 (2d) |
| Sep 27, 2019 | NKTR | ↓ Sell | 4,000 | $17.99 | $72K | Direct | Oct 1, 2019 (4d) |
| Sep 19, 2018 | NKTR | ↓ Sell | 4,500 | $56.81 | $256K | Direct | Sep 21, 2018 (2d) |
| Jun 5, 2018 | NKTR | ↓ Sell | 10,000 | $55.16 | $552K | Direct | Jun 7, 2018 (2d) |
| May 3, 2018 | NKTR | ↓ Sell | 25,000 | $82.80 | $2.1M | Direct | May 4, 2018 (1d) |
| Apr 6, 2018 | NKTR | ↓ Sell | 25,000 | $92.14 | $2.3M | Direct | Apr 9, 2018 (3d) |
| Sep 21, 2017 | NKTR | ↓ Sell | 6,400 | $21.72 | $139K | Direct | Sep 25, 2017 (4d) |
| May 15, 2017 | NKTR | ↓ Sell | 5,000 | $19.79 | $99K | Direct | May 17, 2017 (2d) |
| Apr 17, 2017 | NKTR | ↓ Sell | 5,000 | $18.72 | $94K | Direct | Apr 19, 2017 (2d) |
| Mar 14, 2017 | NKTR | ↓ Sell | 5,000 | $15.41 | $77K | Direct | Mar 16, 2017 (2d) |
| Sep 15, 2016 | NKTR | ↓ Sell | 12,000 | $19.21 | $231K | Direct | Sep 19, 2016 (4d) |
| Aug 1, 2016 | NKTR | ↓ Sell | 5,000 | $17.26 | $86K | Direct | Aug 3, 2016 (2d) |
| Jul 1, 2016 | NKTR | ↓ Sell | 5,000 | $14.10 | $71K | Direct | Jul 5, 2016 (4d) |
| Jun 1, 2016 | NKTR | ↓ Sell | 5,000 | $15.50 | $78K | Direct | Jun 3, 2016 (2d) |
| Jun 19, 2015 | NKTR | ↓ Sell | 15,000 | $11.81 | $177K | Direct | Jun 23, 2015 (4d) |
| Dec 29, 2014 | NKTR | ↓ Sell | 29,500 | $15.34 | $453K | Direct | Dec 31, 2014 (2d) |
| Jul 13, 2012 | NKTR | ↓ Sell | 24,001 | $8.50 | $204K | Direct | Jul 17, 2012 (4d) |
| Mar 8, 2011 | NKTR | ↓ Sell | 4,500 | $9.00 | $41K | Direct | Mar 9, 2011 (1d) |
| May 10, 2010 | NKTR | ↓ Sell | 35,000 | $13.95 | $488K | Direct | May 12, 2010 (2d) |
| Mar 22, 2007 | NKTR | ↓ Sell10b5-1 | 17,700 | $12.23 | $216K | Direct | Mar 22, 2007 (0d) |
| Jan 8, 2007 | NKTR | ↓ Sell | 3,592 | $14.51 | $52K | Direct | Jan 9, 2007 (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 Chess's insider trades
Robert Chess is an insider at Twist Bioscience (TWST). Since Mar 7, 2006, Robert has reported no open-market purchases and 51 sales worth $15.6M on SEC Form 4. In the last 12 months: 3 sales ($2.6M).
3 sales (4% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.
Their filings also include grants and awards (36 filings), option exercises (29 filings), shares returned to the company (4 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.