Twist Bioscience Corp (TWST) insider trading.
In Q3 2026, insiders at Twist Bioscience Corp reported 68 non-derivative transactions on 30 Forms 3, 4 and 5: 0 open-market purchases and 62 sales worth $99.8M.
- Transactions
- 68
- Purchases (P)
- 0
- Sales (S)
- 62
- Net shares, P minus S
- -702,326
- Insiders
- 8
- Last filed
- 2026-09-25
Insiders
| Insider | Relationship | Transactions | Buys | Sales |
|---|---|---|---|---|
| Leproust Emily M. | Director, Officer · Chief Executive Officer | 38 | 0 | 34 |
| Finn Patrick John | Officer · President and COO | 11 | 0 | 10 |
| Cho Dennis | Officer · See Remarks | 6 | 0 | 6 |
| Green Paula | Officer · SVP of Human Resources | 4 | 0 | 4 |
| Werner Robert F. | Officer · Chief Accounting Officer | 4 | 0 | 4 |
| Laponis Adam | Officer · Chief Financial Officer | 2 | 0 | 2 |
| Chess Robert | Director | 2 | 0 | 1 |
| Blake Katryn | Director | 1 | 0 | 1 |
Transactions
| Date | Insider | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-09-24 | Leproust Emily M. | S (D) | 16 | $182.5 | 614,283 | Form 4 |
| 2026-09-24 | Leproust Emily M. | S (D) | 501 | $183.76 | 613,782 | Form 4 |
| 2026-09-24 | Leproust Emily M. | S (D) | 21 | $181.45 | 614,299 | Form 4 |
| 2026-09-24 | Leproust Emily M. | S (D) | 515 | $180.39 | 614,320 | Form 4 |
| 2026-09-24 | Leproust Emily M. | S (D) | 143 | $179.93 | 614,835 | Form 4 |
| 2026-09-24 | Leproust Emily M. | S (D) | 330 | $178.67 | 614,978 | Form 4 |
| 2026-09-24 | Leproust Emily M. | S (D) | 164 | $177.17 | 615,308 | Form 4 |
| 2026-09-24 | Leproust Emily M. | S (D) | 945 | $176.39 | 615,472 | Form 4 |
| 2026-09-24 | Leproust Emily M. | S (D) | 2,485 | $175.23 | 616,417 | Form 4 |
| 2026-09-24 | Leproust Emily M. | S (D) | 83 | $184.6 | 613,699 | Form 4 |
| 2026-09-21 | Leproust Emily M. | S (D) | 1,687 | $165.49 | 618,902 | Form 4 |
| 2026-09-21 | Green Paula | S (D) | 294 | $165.49 | 116,720 | Form 4 |
| 2026-09-21 | Cho Dennis | S (D) | 348 | $165.49 | 73,303 | Form 4 |
| 2026-09-17 | Leproust Emily M. | S (D) | 4,175 | $154.17 | 960,477 | Form 4 |
| 2026-09-17 | Leproust Emily M. | S (D) | 2,565 | $162.31 | 621,458 | Form 4 |
| 2026-09-17 | Leproust Emily M. | S (D) | 11,169 | $161.49 | 624,023 | Form 4 |
| 2026-09-17 | Leproust Emily M. | M (A) | 133,269 | $26.66 | 901,696 | Form 4 |
| 2026-09-17 | Leproust Emily M. | M (A) | 75,439 | $8.82 | 977,135 | Form 4 |
| 2026-09-17 | Leproust Emily M. | S (D) | 2,440 | $151.46 | 974,695 | Form 4 |
| 2026-09-17 | Leproust Emily M. | S (D) | 6,644 | $152.21 | 968,051 | Form 4 |
| 2026-09-17 | Leproust Emily M. | S (D) | 3,399 | $153.4 | 964,652 | Form 4 |
| 2026-09-17 | Leproust Emily M. | S (D) | 869 | $163.39 | 620,589 | Form 4 |
| 2026-09-17 | Leproust Emily M. | S (D) | 13,378 | $155.46 | 947,099 | Form 4 |
| 2026-09-17 | Leproust Emily M. | S (D) | 9,097 | $156.47 | 938,002 | Form 4 |
| 2026-09-17 | Leproust Emily M. | S (D) | 32,260 | $157.49 | 905,742 | Form 4 |
| 2026-09-17 | Leproust Emily M. | S (D) | 232,173 | $158.09 | 673,569 | Form 4 |
| 2026-09-17 | Leproust Emily M. | S (D) | 23,884 | $159.53 | 649,685 | Form 4 |
| 2026-09-17 | Leproust Emily M. | S (D) | 14,493 | $160.44 | 635,192 | Form 4 |
| 2026-09-08 | Werner Robert F. | S (D) | 238 | $122.62 | 44,399 | Form 4 |
| 2026-09-08 | Leproust Emily M. | S (D) | 2,302 | $122.62 | 768,427 | Form 4 |
| 2026-09-08 | Green Paula | S (D) | 907 | $122.62 | 117,014 | Form 4 |
| 2026-09-08 | Cho Dennis | S (D) | 412 | $122.62 | 73,651 | Form 4 |
| 2026-08-25 | Leproust Emily M. | S (D) | 9,181 | $153.93 | 771,822 | Form 4 |
| 2026-08-25 | Leproust Emily M. | S (D) | 6,412 | $152.75 | 781,003 | Form 4 |
| 2026-08-25 | Leproust Emily M. | S (D) | 12,236 | $151.36 | 787,415 | Form 4 |
| 2026-08-25 | Leproust Emily M. | S (D) | 12,648 | $150.56 | 799,651 | Form 4 |
| 2026-08-25 | Leproust Emily M. | S (D) | 1,093 | $154.45 | 770,729 | Form 4 |
| 2026-08-24 | Werner Robert F. | S (D) | 854 | $140.77 | 44,637 | Form 4 |
| 2026-08-21 | Werner Robert F. | S (D) | 669 | $139.07 | 45,491 | Form 4 |
| 2026-08-21 | Leproust Emily M. | S (D) | 6,639 | $139.07 | 812,299 | Form 4 |
| 2026-08-21 | Laponis Adam | S (D) | 1,965 | $139.07 | 108,633 | Form 4 |
| 2026-08-21 | Green Paula | S (D) | 1,360 | $139.07 | 117,921 | Form 4 |
| 2026-08-21 | Finn Patrick John | S (D) | 4,046 | $139.07 | 210,802 | Form 4 |
| 2026-08-21 | Cho Dennis | S (D) | 1,598 | $139.07 | 74,063 | Form 4 |
| 2026-08-19 | Cho Dennis | S (D) | 14,205 | $129.75 | 75,661 | Form 4 |
| 2026-08-18 | Finn Patrick John | S (D) | 2,000 | $122.58 | 214,678 | Form 4 |
| 2026-08-18 | Finn Patrick John | S (D) | 6,296 | $121.01 | 216,678 | Form 4 |
| 2026-08-18 | Finn Patrick John | S (D) | 12,917 | $119.86 | 222,974 | Form 4 |
| 2026-08-18 | Finn Patrick John | S (D) | 4,500 | $119.04 | 235,891 | Form 4 |
| 2026-08-18 | Finn Patrick John | S (D) | 8,868 | $117.7 | 240,391 | Form 4 |
| 2026-08-18 | Finn Patrick John | S (D) | 10,420 | $116.82 | 249,259 | Form 4 |
| 2026-08-18 | Finn Patrick John | M (A) | 23,355 | $67.85 | 293,033 | Form 4 |
| 2026-08-18 | Finn Patrick John | S (D) | 33,354 | $115.9 | 259,679 | Form 4 |
| 2026-08-12 | Leproust Emily M. | M (A) | 19,952 | $26.66 | 838,890 | Form 4 |
| 2026-08-12 | Leproust Emily M. | S (D) | 19,952 | $125.08 | 818,938 | Form 4 |
| 2026-08-12 | Blake Katryn | S (D) | 2,240 | $122.88 | 17,208 | Form 4 |
| 2026-08-10 | Leproust Emily M. | S (D) | 113,318 | $125.16 | 818,938 | Form 4 |
| 2026-08-10 | Leproust Emily M. | M (A) | 113,318 | $26.66 | 932,256 | Form 4 |
| 2026-08-07 | Chess Robert | M (A) | 18,417 | $11.89 | 39,501 | Form 4 |
| 2026-08-07 | Chess Robert | S (D) | 18,417 | $110.89 | 21,084 | Form 4 |
| 2026-08-05 | Cho Dennis | S (D) | 14,205 | $109.75 | 89,866 | Form 4 |
| 2026-08-03 | Cho Dennis | S (D) | 1,070 | $85.32 | 104,071 | Form 4 |
| 2026-08-03 | Werner Robert F. | S (D) | 167 | $85.32 | 46,160 | Form 4 |
| 2026-08-03 | Leproust Emily M. | S (D) | 5,101 | $85.32 | 818,938 | Form 4 |
| 2026-08-03 | Green Paula | S (D) | 1,133 | $85.32 | 119,281 | Form 4 |
| 2026-08-03 | Finn Patrick John | S (D) | 2,888 | $85.32 | 269,678 | Form 4 |
| 2026-07-23 | Finn Patrick John | S (D) | 2,238 | $93.89 | 272,566 | Form 4 |
| 2026-07-09 | Laponis Adam | S (D) | 2,399 | $94.33 | 110,276 | Form 4 |
Transaction codes in this quarter
Get TWST insider transactions through the API
Request with your API key
curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=1581280&limit=100" \
-H "Authorization: Bearer $SEC_API_KEY"Insider trading API guide · TWST company page · Twist Bioscience Corp on SEC.gov
Questions
Are insiders buying or selling Twist Bioscience Corp (TWST)?
In Q3 2026, insiders at Twist Bioscience Corp reported 68 non-derivative transactions on 30 Forms 3, 4 and 5: 0 open-market purchases and 62 sales worth $99.8M. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.
Where do these Twist Bioscience Corp insider trades come from?
From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.
Source: SEC Insider Transactions Data Sets, Q3 2026, retrieved 2026-10-27. Footnotes, derivative holdings and amendments are in the linked filings. Not investment advice.
Plain-text version for agents and LLMs: /insider-trading/twst.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.