Twist Bioscience Corporation
A maker of synthetic DNA, Twist Bioscience writes custom genes and gene fragments on tiny silicon chips, shrinking the synthesis process dramatically. Its tools help researchers and drug developers discover and optimize antibodies, while its NGS products—target enrichment probes, library prep kits, and synthetic controls—are used in diagnostic tests for cancer, rare disease, and infectious disease. The company serves over 3,800 customers worldwide.
Bought 75.0K
Granted 1.33M · Sold 992.9K
Granted 17.8K · Sold 60.0K
Granted 196.1K · Sold 531.4K
Granted 832.6K · Sold 573.9K
Granted 332.3K · Sold 204.5K
Granted 179.4K · Sold 70.3K
Granted 27.6K · Bought 75.0K · Sold 120.0K
Granted 335.2K · Sold 223.4K
Granted 172.8K · Bought 10.0K · Sold 91.6K
Granted 183.1K · Sold 133.9K
Granted 44.7K · Sold 52.3K
Granted 268.9K · Sold 265.1K
Granted 83.0K · Sold 35.5K
Granted 5.1K
Granted 31.1K
Granted 59.6K · Sold 43.2K
Granted 38.2K · Sold 10.6K
Granted 25.2K
Granted 18.1K · Bought 8.6K · Sold 5.0K
Granted 28.5K · Sold 6.2K
Granted 20.3K
Granted 19.4K
Granted 9.5K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Ever Alpha Fund L.P.10% owner · 1 transaction | — | 3.29Mas of Nov 2018 | — | — | — |
| Bybee Clinton +6 co-filers10% owner · 7 transactions | — | 1.90Mas of Nov 2018 | — | 75.0K | — |
| Leproust Emily M.Chief Executive Officer, Director · 333 transactions | — | 770.7K | 1.33M | — | 992.9K |
| Peck BillChief Technology Officer · 12 transactions | — | 646.1Kas of Nov 2019 | 17.8K | — | 60.0K |
| Banyai WilliamSee Remark · 238 transactions | — | 345.2Kas of May 2024 | 196.1K | — | 531.4K |
| Finn Patrick JohnPresident and COO · 233 transactions | — | 210.8K | 832.6K | — | 573.9K |
| Green PaulaSVP of Human Resources · 142 transactions | — | 117.9K | 332.3K | — | 204.5K |
| Laponis AdamChief Financial Officer · 31 transactions | — | 108.6K | 179.4K | — | 70.3K |
| Crandell KeithDirector · 42 transactions | — | 103.6K | 27.6K | 75.0K | 120.0K |
| Thorburn James MChief Financial Officer · 142 transactions | — | 86.3Kas of Jan 2024 | 335.2K | — | 223.4K |
| Cho DennisSee Remarks · 94 transactions | — | 74.1K | 172.8K | 10.0K | 91.6K |
| Craves Fred BDirector · 3 transactions | — | 66.8Kas of Nov 2018 | — | — | — |
| Daniels MarkSee Remarks · 90 transactions | — | 66.7Kas of Apr 2021 | 183.1K | — | 133.9K |
| Chess RobertDirector · 31 transactions | — | 63.6K | 44.7K | — | 52.3K |
| Weiss PatrickChief Operating Officer · 212 transactions | — | 47.4Kas of Apr 2022 | 268.9K | — | 265.1K |
| Werner Robert F.Chief Accounting Officer · 52 transactions | — | 44.6K | 83.0K | — | 35.5K |
| Chan NelsonDirector · 1 transaction | — | 33.3K | 5.1K | — | — |
| Mai XiaoyingDirector · 4 transactions | — | 31.1Kas of Feb 2024 | 31.1K | — | — |
| Johannessen JanDirector · 20 transactions | — | 29.8K | 59.6K | — | 43.2K |
| Ragusa Robert PDirector · 14 transactions | — | 29.0K | 38.2K | — | 10.6K |
| Chan Nelson CDirector · 7 transactions | — | 28.2Kas of Feb 2025 | 25.2K | — | — |
| Barthelemy NicolasDirector · 6 transactions | — | 23.0Kas of Nov 2022 | 18.1K | 8.6K | 5.0K |
| Starovasnik Melissa A.Director · 11 transactions | — | 22.2K | 28.5K | — | 6.2K |
| Kunz MartinSVP, Operations · 2 transactions | — | 20.3Kas of Oct 2019 | 20.3K | — | — |
| Blake KatrynDirector · 2 transactions | — | 19.4K | 19.4K | — | — |
| Yankton Kevin BruceChief Accounting Officer · 18 transactions | — | 9.1Kas of May 2023 | 9.5K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over all recorded history: -3.25M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.