Robert B. Chess's most recent trade in Twist Bioscience Corp was a trade of 18,417 Common Stock done at an average price of $110.9 . Disclosure was reported to the exchange on Aug. 7, 2026.
| Stock | Client Name | Client Category | Action | Reported to Exchange | Quantity | Post Transaction Holding | Traded % | Avg. Price | Value | Security Type |
|---|---|---|---|---|---|---|---|---|---|---|
| Twist Bioscience Corp | Robert B. Chess | Director | Sale of securities on an exchange or to another person at price $ 110.89 per share. | 07 Aug 2026 | 18,417 | 21,084 (0%) | 0% | 110.9 | 2,042,261 | Common Stock |
| Twist Bioscience Corp | Robert B. Chess | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 11.89 per share. | 07 Aug 2026 | 18,417 | 39,501 (0%) | 0% | 11.9 | 218,978 | Common Stock |
| Twist Bioscience Corp | Robert B. Chess | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 07 Aug 2026 | 18,417 | 0 | - | - | Stock Option (right to buy) | |
| Twist Bioscience Corp | Robert B. Chess | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 17 Mar 2026 | 10,000 | 18,417 | - | - | Stock Option (right to buy) | |
| Twist Bioscience Corp | Robert B. Chess | Director | Sale of securities on an exchange or to another person at price $ 47.00 per share. | 17 Mar 2026 | 10,000 | 21,084 (0%) | 0% | 47 | 470,000 | Common Stock |
| Twist Bioscience Corp | Robert B. Chess | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 11.89 per share. | 17 Mar 2026 | 10,000 | 31,084 (0%) | 0% | 11.9 | 118,900 | Common Stock |
| Twist Bioscience Corp | Robert B. Chess | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 05 Feb 2026 | 5,095 | 23,268 (0%) | 0% | 0 | Common Stock | |
| Nektar Therapeutics | Robert B. Chess | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 30 Sep 2025 | 8,000 | 8,000 | - | - | Stock Option | |
| Twist Bioscience Corp | Robert B. Chess | Director | Sale of securities on an exchange or to another person at price $ 53.14 per share. | 07 Feb 2025 | 2,940 | 18,173 (0%) | 0% | 53.1 | 156,217 | Common Stock |
| Twist Bioscience Corp | Robert B. Chess | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 05 Feb 2025 | 4,472 | 21,113 (0%) | 0% | 0 | Common Stock | |
| Nektar Therapeutics | Robert B. Chess | Director | 31 Dec 2024 | 120,000 | 120,000 | - | - | Stock Option | ||
| Twist Bioscience Corp | Chess Robert B. | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 05 Dec 2024 | 3,504 | 0 | - | - | Stock Option (right to buy) | |
| Twist Bioscience Corp | B. Chess Robert | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 8.82 per share. | 05 Dec 2024 | 3,504 | 25,145 (0%) | 0% | 8.8 | 30,905 | Common Stock |
| Twist Bioscience Corp | B. Chess Robert | Director | Sale of securities on an exchange or to another person at price $ 51.70 per share. | 05 Dec 2024 | 2,795 | 22,350 (0%) | 0% | 51.7 | 144,508 | Common Stock |
| Twist Bioscience Corp | B. Chess Robert | Director | Sale of securities on an exchange or to another person at price $ 52.45 per share. | 05 Dec 2024 | 709 | 21,641 (0%) | 0% | 52.5 | 37,188 | Common Stock |
| Twist Bioscience Corp | Robert B. Chess | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 8.82 per share. | 11 Nov 2024 | 3,600 | 25,241 (0%) | 0% | 8.8 | 31,752 | Common Stock |
| Twist Bioscience Corp | Robert B. Chess | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 11 Nov 2024 | 3,600 | 3,504 | - | - | Stock Option (right to buy) | |
| Twist Bioscience Corp | Robert B. Chess | Director | Sale of securities on an exchange or to another person at price $ 46.99 per share. | 11 Nov 2024 | 2,324 | 22,917 (0%) | 0% | 47.0 | 109,203 | Common Stock |
| Twist Bioscience Corp | Robert B. Chess | Director | Sale of securities on an exchange or to another person at price $ 47.75 per share. | 11 Nov 2024 | 1,276 | 21,641 (0%) | 0% | 47.8 | 60,935 | Common Stock |
| Nektar Therapeutics | Robert B. Chess | Director | Sale of securities on an exchange or to another person at price $ 1.20 per share. | 14 Jun 2024 | 19,500 | 255,273 (0%) | 0% | 1.2 | 23,400 | Common Stock |
| Twist Bioscience Corp | Robert B. Chess | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 06 Feb 2024 | 5,815 | 68,279 (0%) | 0% | 0 | Common Stock | |
| Twist Bioscience Corp | Robert Chess B. | Director | Sale of securities on an exchange or to another person at price $ 34.98 per share. | 06 Feb 2024 | 4,110 | 64,169 (0%) | 0% | 35.0 | 143,784 | Common Stock |
| Twist Bioscience Corp | Robert B. Chess | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 07 Feb 2023 | 8,212 | 62,464 (0%) | 0% | 0 | Common Stock | |
| Nektar Therapeutics | Robert B. Chess | Director | Sale of securities on an exchange or to another person at price $ 3.19 per share. | 22 Sep 2022 | 5,100 | 228,179 (0%) | 0% | 3.2 | 16,269 | Common Stock |
| Nektar Therapeutics | Robert B. Chess | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 16 Sep 2022 | 20,400 | 20,400 | - | - | Stock Option | |
| Nektar Therapeutics | Robert B. Chess | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 16 Sep 2022 | 10,200 | 233,279 (0%) | 0% | 0 | Common Stock | |
| Twist Bioscience Corp | Robert B. Chess | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 08 Feb 2022 | 3,491 | 54,252 (0%) | 0% | 0 | Common Stock | |
| Twist Bioscience Corp | Robert B. Chess | Director | Sale of securities on an exchange or to another person at price $ 58.88 per share. | 04 Feb 2022 | 253 | 50,761 (0%) | 0% | 58.9 | 14,896 | Common Stock |
| Twist Bioscience Corp | Robert B. Chess | Director | Sale of securities on an exchange or to another person at price $ 120.15 per share. | 01 Nov 2021 | 4,000 | 51,014 (0%) | 0% | 120.2 | 480,614 | Common Stock |
| Twist Bioscience Corp | Robert B. Chess | Director | Sale of securities on an exchange or to another person at price $ 120.15 per share. | 21 Oct 2021 | 3,700 | 55,014 (0%) | 0% | 120.1 | 444,540 | Common Stock |
| Twist Bioscience Corp | Robert B. Chess | Director | Sale of securities on an exchange or to another person at price $ 120.00 per share. | 19 Oct 2021 | 300 | 58,714 (0%) | 0% | 120 | 36,000 | Common Stock |
| Nektar Therapeutics | Robert B. Chess | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 22 Sep 2021 | 20,400 | 20,400 | - | - | Stock Option | |
| Nektar Therapeutics | Robert B. Chess | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 22 Sep 2021 | 10,200 | 284,473 (0%) | 0% | 0 | Common Stock | |
| Nektar Therapeutics | Robert B. Chess | Director | Sale of securities on an exchange or to another person at price $ 17.94 per share. | 22 Sep 2021 | 4,600 | 279,873 (0%) | 0% | 17.9 | 82,524 | Common Stock |