TWST insider transaction filings
Twist Bioscience Corp — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-09-21. Screen TWST transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 31 Form 4 filings. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 54 legs across 31 filings by 8 insiders — 730,204 shares, $101,713,068 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 12.
- Largest priced transaction: sale of 232,173 shares @ $158.09 ($36,703,672) by Leproust Emily M., filed 2026-09-21.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| Leproust Emily M. — Chief Executive Officer, Director | 9 | — | 25 legs · 565,996 sh · $82,908,806 | 8 |
| Finn Patrick John — President and COO | 4 | — | 10 legs · 87,527 sh · $10,236,808 | 2 |
| Cho Dennis — See Remarks | 7 | — | 7 legs · 46,041 sh · $5,071,252 | — |
| CHESS ROBERT — Director | 1 | — | 1 leg · 18,417 sh · $2,042,261 | 2 |
| Laponis Adam — Chief Financial Officer | 2 | — | 2 legs · 4,364 sh · $499,572 | — |
| Green Paula — SVP of Human Resources | 4 | — | 4 legs · 3,691 sh · $422,429 | — |
| BLAKE KATRYN — Director | 1 | — | 1 leg · 2,240 sh · $275,251 | — |
| WERNER ROBERT F. — Chief Accounting Officer | 3 | — | 4 legs · 1,928 sh · $256,688 | — |
Recent Form 4 filings — Twist Bioscience Corp
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-21 | 4 | Leproust Emily M. — Chief Executive Officer, Director | Option exercise (M): 133,269 @ $26.66 · Option exercise (M): 75,439 @ $8.82 · Sale (S): 2,440 @ $151.46 · Sale (S): 6,644 @ $152.21 · Sale (S): 3,399 @ $153.40 · Sale (S): 4,175 @ $154.17 · +11 more | EDGAR |
| 2026-09-10 | 4 | WERNER ROBERT F. — Chief Accounting Officer | Sale (S): 238 @ $122.62 | EDGAR |
| 2026-09-10 | 4 | Leproust Emily M. — Chief Executive Officer, Director | Sale (S): 2,302 @ $122.62 | EDGAR |
| 2026-09-10 | 4 | Green Paula — SVP of Human Resources | Sale (S): 907 @ $122.62 | EDGAR |
| 2026-09-10 | 4 | Cho Dennis — See Remarks | Sale (S): 412 @ $122.62 | EDGAR |
| 2026-08-27 | 4 | Leproust Emily M. — Chief Executive Officer, Director | Sale (S): 12,648 @ $150.56 · Sale (S): 12,236 @ $151.35 · Sale (S): 6,412 @ $152.75 · Sale (S): 9,181 @ $153.93 · Sale (S): 1,093 @ $154.45 | EDGAR |
| 2026-08-25 | 4 | WERNER ROBERT F. — Chief Accounting Officer | Sale (S): 669 @ $139.07 · Sale (S): 854 @ $140.77 | EDGAR |
| 2026-08-25 | 4 | Leproust Emily M. — Chief Executive Officer, Director | Sale (S): 6,639 @ $139.07 | EDGAR |
| 2026-08-25 | 4 | Laponis Adam — Chief Financial Officer | Sale (S): 1,965 @ $139.07 | EDGAR |
| 2026-08-25 | 4 | Green Paula — SVP of Human Resources | Sale (S): 1,360 @ $139.07 | EDGAR |
| 2026-08-25 | 4 | Finn Patrick John — President and COO | Sale (S): 4,046 @ $139.07 | EDGAR |
| 2026-08-25 | 4 | Cho Dennis — See Remarks | Sale (S): 1,598 @ $139.07 | EDGAR |
| 2026-08-21 | 4 | Cho Dennis — See Remarks | Sale (S): 14,205 @ $129.75 | EDGAR |
| 2026-08-20 | 4 | Finn Patrick John — President and COO | Option exercise (M): 23,355 @ $67.85 · Sale (S): 33,354 @ $115.90 · Sale (S): 10,420 @ $116.82 · Sale (S): 8,868 @ $117.70 · Sale (S): 4,500 @ $119.04 · Sale (S): 12,917 @ $119.86 · +3 more | EDGAR |
| 2026-08-14 | 4 | BLAKE KATRYN — Director | Sale (S): 2,240 @ $122.88 | EDGAR |
| 2026-08-14 | 4 | Leproust Emily M. — Chief Executive Officer, Director | Option exercise (M): 19,952 @ $26.66 · Sale (S): 19,952 @ $125.08 · Option exercise (M): 19,952 (derivative) @ $0 | EDGAR |
| 2026-08-12 | 4 | Leproust Emily M. — Chief Executive Officer, Director | Option exercise (M): 113,318 @ $26.66 · Sale (S): 113,318 @ $125.16 · Option exercise (M): 113,318 (derivative) @ $0 | EDGAR |
| 2026-08-11 | 4 | CHESS ROBERT — Director | Option exercise (M): 18,417 @ $11.89 · Sale (S): 18,417 @ $110.89 · Option exercise (M): 18,417 (derivative) @ $0 | EDGAR |
| 2026-08-07 | 4 | Cho Dennis — See Remarks | Sale (S): 14,205 @ $109.75 | EDGAR |
| 2026-08-05 | 4 | Cho Dennis — See Remarks | Sale (S): 1,070 @ $85.32 | EDGAR |
| 2026-08-05 | 4 | WERNER ROBERT F. — Chief Accounting Officer | Sale (S): 167 @ $85.32 | EDGAR |
| 2026-08-05 | 4 | Leproust Emily M. — Chief Executive Officer, Director | Sale (S): 5,101 @ $85.32 | EDGAR |
| 2026-08-05 | 4 | Green Paula — SVP of Human Resources | Sale (S): 1,133 @ $85.32 | EDGAR |
| 2026-08-05 | 4 | Finn Patrick John — President and COO | Sale (S): 2,888 @ $85.32 | EDGAR |
| 2026-07-27 | 4 | Finn Patrick John — President and COO | Sale (S): 2,238 @ $93.89 | EDGAR |
| 2026-07-13 | 4 | Laponis Adam — Chief Financial Officer | Sale (S): 2,399 @ $94.33 | EDGAR |
| 2026-06-26 | 4 | Leproust Emily M. — Chief Executive Officer, Director | Sale (S): 18,880 @ $95 | EDGAR |
| 2026-06-26 | 4 | Cho Dennis — See Remarks | Sale (S): 14,205 @ $89.75 | EDGAR |
| 2026-06-24 | 4 | Green Paula — SVP of Human Resources | Sale (S): 291 @ $87.32 | EDGAR |
| 2026-06-24 | 4 | Cho Dennis — See Remarks | Sale (S): 346 @ $87.32 | EDGAR |
| 2026-06-24 | 4 | Leproust Emily M. — Chief Executive Officer, Director | Sale (S): 1,688 @ $87.32 | EDGAR |
| 2026-06-17 | 4 | Green Paula — SVP of Human Resources | Option exercise (M): 26,137 @ $23.33 · Sale (S): 24,109 @ $81.62 · Sale (S): 2,028 @ $82.17 · Option exercise (M): 26,137 (derivative) @ $0 | EDGAR |
| 2026-06-10 | 4 | Cho Dennis — See Remarks | Sale (S): 402 @ $69.84 | EDGAR |
| 2026-06-10 | 4 | Green Paula — SVP of Human Resources | Sale (S): 884 @ $69.84 | EDGAR |
| 2026-06-10 | 4 | Leproust Emily M. — Chief Executive Officer, Director | Sale (S): 2,265 @ $69.84 | EDGAR |
| 2026-06-10 | 4 | WERNER ROBERT F. — Chief Accounting Officer | Sale (S): 232 @ $69.84 · Sale (S): 1,127 @ $69.07 · Gift (G): 500 @ $0 | EDGAR |
| 2026-06-02 | 4 | Cho Dennis — See Remarks | Sale (S): 14,205 @ $69.75 | EDGAR |
| 2026-06-02 | 4 | Laponis Adam — Chief Financial Officer | Sale (S): 4,000 @ $70 | EDGAR |
| 2026-06-01 | 4 | Leproust Emily M. — Chief Executive Officer, Director | Option exercise (M): 16,470 @ $8.82 · Sale (S): 1,482 @ $65.33 · Sale (S): 900 @ $66.85 · Sale (S): 7,623 @ $67.95 · Sale (S): 6,465 @ $68.61 · Option exercise (M): 16,470 (derivative) @ $0 | EDGAR |
| 2026-06-01 | 4 | Starovasnik Melissa A. — Director | Sale (S): 2,500 @ $68 | EDGAR |
| 2026-05-28 | 4 | Leproust Emily M. — Chief Executive Officer, Director | Option exercise (M): 24,282 @ $8.82 · Sale (S): 24,282 @ $65.08 · Option exercise (M): 25,017 @ $8.82 · Sale (S): 23,752 @ $65.24 · Sale (S): 1,265 @ $66.28 · Option exercise (M): 24,282 (derivative) @ $0 · +1 more | EDGAR |
| 2026-05-28 | 4 | WERNER ROBERT F. — Chief Accounting Officer | Sale (S): 800 @ $62.48 | EDGAR |
| 2026-05-28 | 4 | Starovasnik Melissa A. — Director | Sale (S): 500 @ $61.04 | EDGAR |
| 2026-05-26 | 4 | WERNER ROBERT F. — Chief Accounting Officer | Sale (S): 688 @ $53.26 | EDGAR |
| 2026-05-26 | 4 | Leproust Emily M. — Chief Executive Officer, Director | Sale (S): 6,888 @ $53.26 | EDGAR |
| 2026-05-26 | 4 | Laponis Adam — Chief Financial Officer | Sale (S): 2,019 @ $53.26 | EDGAR |
| 2026-05-26 | 4 | Green Paula — SVP of Human Resources | Sale (S): 1,399 @ $53.26 | EDGAR |
| 2026-05-26 | 4 | Finn Patrick John — President and COO | Sale (S): 4,160 @ $53.26 | EDGAR |
| 2026-05-26 | 4 | Cho Dennis — See Remarks | Sale (S): 1,642 @ $53.26 | EDGAR |
| 2026-05-14 | 4 | JOHANNESSEN JAN — Director | Option exercise (M): 12,000 @ $14 · Sale (S): 12,000 @ $56.12 · Option exercise (M): 12,000 (derivative) @ $0 | EDGAR |
Recent 8-K events — Twist Bioscience Corp
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-08-19 | 8-K | 7.01 — Regulation FD Disclosure | EDGAR |
| 2026-08-19 | 8-K | 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-08-05 | 8-K | 1.01 — Entry into a Material Definitive Agreement 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-08-03 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-04 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-02-17 | 8-K | 3.02 — Unregistered Sales of Equity Securities 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-02-06 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
| 2026-02-02 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-01-12 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-11-14 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
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