Company · CIK 0001581280 · SIC 2836 — Biological Products, (No Diagnostic Substances) · Nasdaq
Twist Bioscience Corp · TWST
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 24, 2026 SForm 4 → | Sep 25, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 5,203 | $177.38 | $922,907 | 613,699 | −0.84% | 10b5-1 |
| Sep 21, 2026 SForm 4 → | Sep 23, 4:08 pm EDT | Dennis ChoSee Remarks | 348 | $165.49 | $57,591 | 73,303 | −0.47% | |
| Sep 21, 2026 SForm 4 → | Sep 23, 4:07 pm EDT | Paula GreenSVP of Human Resources | 294 | $165.49 | $48,654 | 116,720 | −0.25% | |
| Sep 21, 2026 SForm 4 → | Sep 23, 4:07 pm EDT | Emily M. LeproustChief Executive Officer, Director | 1,687 | $165.49 | $279,183 | 618,902 | −0.27% | |
| Sep 17, 2026 SForm 4 → | Sep 21, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 356,546 | $157.99 | $56,330,724 | 620,589 | −36.5% | 10b5-1 |
| Sep 17, 2026 MForm 4 → | Sep 21, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 208,708 | $20.21 | $4,218,324 | 977,135 | — | 10b5-1 |
| Sep 8, 2026 SForm 4 → | Sep 10, 4:00 pm EDT | Dennis ChoSee Remarks | 412 | $122.62 | $50,521 | 73,651 | −0.56% | |
| Sep 8, 2026 SForm 4 → | Sep 10, 4:00 pm EDT | Paula GreenSVP of Human Resources | 907 | $122.62 | $111,220 | 117,014 | −0.77% | |
| Sep 8, 2026 SForm 4 → | Sep 10, 4:00 pm EDT | Emily M. LeproustChief Executive Officer, Director | 2,302 | $122.62 | $282,280 | 768,427 | −0.30% | |
| Sep 8, 2026 SForm 4 → | Sep 10, 4:00 pm EDT | Robert F. WernerChief Accounting Officer | 238 | $122.62 | $29,185 | 44,399 | −0.53% | |
| Aug 25, 2026 SForm 4 → | Aug 27, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 41,570 | $151.98 | $6,317,760 | 770,729 | −5.12% | 10b5-1 |
| Aug 21, 2026 SForm 4 → | Aug 25, 4:05 pm EDT | Dennis ChoSee Remarks | 1,598 | $139.07 | $222,227 | 74,063 | −2.11% | |
| Aug 21, 2026 SForm 4 → | Aug 25, 4:05 pm EDT | Patrick John FinnPresident and COO | 4,046 | $139.07 | $562,661 | 210,802 | −1.88% | |
| Aug 21, 2026 SForm 4 → | Aug 25, 4:05 pm EDT | Paula GreenSVP of Human Resources | 1,360 | $139.07 | $189,130 | 117,921 | −1.14% | |
| Aug 21, 2026 SForm 4 → | Aug 25, 4:05 pm EDT | Adam LaponisChief Financial Officer | 1,965 | $139.07 | $273,265 | 108,633 | −1.78% | |
| Aug 21, 2026 SForm 4 → | Aug 25, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 6,639 | $139.07 | $923,259 | 812,299 | −0.81% | |
| Aug 21, 2026 SForm 4 → | Aug 25, 4:05 pm EDT | Robert F. WernerChief Accounting Officer | 1,523 | $140.02 | $213,255 | 44,637 | −3.30% | |
| Aug 19, 2026 SForm 4 → | Aug 21, 4:05 pm EDT | Dennis ChoSee Remarks | 14,205 | $129.75 | $1,843,099 | 75,661 | −15.8% | 10b5-1 |
| Aug 18, 2026 SForm 4 → | Aug 20, 4:05 pm EDT | Patrick John FinnPresident and COO | 78,355 | $117.64 | $9,217,607 | 214,678 | −26.7% | 10b5-1 |
| Aug 18, 2026 MForm 4 → | Aug 20, 4:05 pm EDT | Patrick John FinnPresident and COO | 23,355 | $67.85 | $1,584,637 | 293,033 | — | 10b5-1 |
| Aug 12, 2026 SForm 4 → | Aug 14, 4:12 pm EDT | Katryn BlakeDirector | 2,240 | $122.88 | $275,251 | 17,208 | −11.5% | |
| Aug 12, 2026 SForm 4 → | Aug 14, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 19,952 | $125.08 | $2,495,508 | 818,938 | −2.38% | 10b5-1 |
| Aug 12, 2026 MForm 4 → | Aug 14, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 19,952 | $26.66 | $531,920 | 838,890 | — | 10b5-1 |
| Aug 10, 2026 SForm 4 → | Aug 12, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 113,318 | $125.16 | $14,183,051 | 818,938 | −12.2% | 10b5-1 |
| Aug 10, 2026 MForm 4 → | Aug 12, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 113,318 | $26.66 | $3,021,058 | 932,256 | — | 10b5-1 |
| Aug 7, 2026 SForm 4 → | Aug 11, 4:05 pm EDT | Robert ChessDirector | 18,417 | $110.89 | $2,042,261 | 21,084 | −46.6% | 10b5-1 |
| Aug 7, 2026 MForm 4 → | Aug 11, 4:05 pm EDT | Robert ChessDirector | 18,417 | $11.89 | $218,978 | 39,501 | — | 10b5-1 |
| Aug 5, 2026 SForm 4 → | Aug 7, 4:05 pm EDT | Dennis ChoSee Remarks | 14,205 | $109.75 | $1,558,999 | 89,866 | −13.6% | 10b5-1 |
| Aug 3, 2026 SForm 4 → | Aug 5, 4:05 pm EDT | Patrick John FinnPresident and COO | 2,888 | $85.32 | $246,408 | 269,678 | −1.06% | |
| Aug 3, 2026 SForm 4 → | Aug 5, 4:05 pm EDT | Paula GreenSVP of Human Resources | 1,133 | $85.32 | $96,669 | 119,281 | −0.94% | |
| Aug 3, 2026 SForm 4 → | Aug 5, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 5,101 | $85.32 | $435,223 | 818,938 | −0.62% | |
| Aug 3, 2026 SForm 4 → | Aug 5, 4:05 pm EDT | Robert F. WernerChief Accounting Officer | 167 | $85.32 | $14,249 | 46,160 | −0.36% | |
| Aug 3, 2026 SForm 4 → | Aug 5, 4:05 pm EDT | Dennis ChoSee Remarks | 1,070 | $85.32 | $91,294 | 104,071 | −1.02% | |
| Jul 23, 2026 SForm 4 → | Jul 27, 4:05 pm EDT | Patrick John FinnPresident and COO | 2,238 | $93.89 | $210,133 | 272,566 | −0.81% | |
| Jul 9, 2026 SForm 4 → | Jul 13, 4:05 pm EDT | Adam LaponisChief Financial Officer | 2,399 | $94.33 | $226,307 | 110,276 | −2.13% | |
| Jun 25, 2026 SForm 4 → | Jun 26, 4:41 pm EDT | Emily M. LeproustChief Executive Officer, Director | 18,880 | $95.00 | $1,793,600 | 824,039 | −2.24% | 10b5-1 |
| Jun 24, 2026 SForm 4 → | Jun 26, 4:05 pm EDT | Dennis ChoSee Remarks | 14,205 | $89.75 | $1,274,899 | 105,141 | −11.9% | 10b5-1 |
| Jun 22, 2026 SForm 4 → | Jun 24, 4:05 pm EDT | Paula GreenSVP of Human Resources | 291 | $87.32 | $25,411 | 120,414 | −0.24% | |
| Jun 22, 2026 SForm 4 → | Jun 24, 4:05 pm EDT | Dennis ChoSee Remarks | 346 | $87.32 | $30,214 | 119,346 | −0.29% | |
| Jun 22, 2026 SForm 4 → | Jun 24, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 1,688 | $87.32 | $147,400 | 842,919 | −0.20% | |
| Jun 15, 2026 SForm 4 → | Jun 17, 4:05 pm EDT | Paula GreenSVP of Human Resources | 26,137 | $81.67 | $2,134,488 | 120,705 | −17.8% | |
| Jun 15, 2026 MForm 4 → | Jun 17, 4:05 pm EDT | Paula GreenSVP of Human Resources | 26,137 | $23.33 | $609,776 | 146,842 | — | |
| Jun 8, 2026 SForm 4 → | Jun 10, 4:05 pm EDT | Dennis ChoSee Remarks | 402 | $69.84 | $28,077 | 119,692 | −0.33% | |
| Jun 8, 2026 SForm 4 → | Jun 10, 4:05 pm EDT | Paula GreenSVP of Human Resources | 884 | $69.84 | $61,742 | 120,705 | −0.73% | |
| Jun 8, 2026 SForm 4 → | Jun 10, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 2,265 | $69.84 | $158,197 | 844,607 | −0.27% | |
| Jun 8, 2026 GForm 4 → | Jun 10, 4:05 pm EDT | Robert F. WernerChief Accounting Officer | 500 | — | — | 46,327 | — | |
| Jun 8, 2026 SForm 4 → | Jun 10, 4:05 pm EDT | Robert F. WernerChief Accounting Officer | 1,359 | $69.20 | $94,046 | 46,827 | −2.82% | |
| Feb 4, 2019 AForm 4 → | Feb 5, 5:26 pm EST | Martin KunzSVP, Operations | 12,936 | — | — | 12,936 | — | plan? |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:46 pm EST | Patrick WeissSVP, R&D GM Data Storage | 50,760 | — | — | 105,287 | — | plan? |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:45 pm EST | James M ThorburnChief Financial Officer | 39,002 | — | — | 39,002 | — | plan? |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:45 pm EST | Bill PeckChief Technology Officer | 15,002 | — | — | 723,332 | — | plan? |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:44 pm EST | Emily M. LeproustPresident & CEO, Director | 114,231 | — | — | 822,561 | — | plan? |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:42 pm EST | Paula GreenVP of Human Resources | 15,003 | — | — | 15,003 | — | plan? |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:42 pm EST | Patrick John FinnSVP, Commercial Operations | 39,002 | — | — | 39,002 | — | plan? |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:41 pm EST | Mark DanielsSVP, Chief Legal Officer | 30,000 | — | — | 51,355 | — | plan? |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:40 pm EST | William BanyaiChief Operating Officer, Director | 39,002 | — | — | 747,332 | — | plan? |
| Nov 2, 2018 CForm 4 → | Nov 6, 5:02 pm EST | Ever Alpha Fund L.P.10% Owner | 3,294,961 | — | — | 3,294,961 | — | plan? |
| Nov 2, 2018 CForm 4 → | Nov 6, 5:01 pm EST | Robert P RagusaDirector | 1,702,101 | — | — | 1,702,101 | — | plan? |
| Nov 2, 2018 CForm 4 → | Nov 6, 5:01 pm EST | Fred B CravesDirector | 66,771 | — | — | 66,771 | — | plan? |
| Nov 2, 2018 PForm 4 → | Nov 6, 5:00 pm EST | Keith CrandellDirector, 10% Owner | 75,000 | $14.00 | $1,050,000 | 954,146 | +8.53% | plan? |
| Nov 2, 2018 CForm 4 → | Nov 6, 5:00 pm EST | Keith CrandellDirector, 10% Owner | 3,286,568 | — | — | 894,146 | — | plan? |
| Nov 2, 2018 PForm 4 → | Nov 6, 4:31 pm EST | ARCH Venture Partners VIII, LLC +610% Owner | 75,000 | $14.00 | $1,050,000 | 954,146 | +8.53% | plan? |
| Nov 2, 2018 CForm 4 → | Nov 6, 4:31 pm EST | ARCH Venture Partners VIII, LLC +610% Owner | 3,286,568 | — | — | 894,146 | — | plan? |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 17, 2026 MForm 4 → | Sep 21, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 208,708 | — | — | 0 | — | 10b5-1 |
| Aug 18, 2026 MForm 4 → | Aug 20, 4:05 pm EDT | Patrick John FinnPresident and COO | 23,355 | — | — | 0 | — | 10b5-1 |
| Aug 12, 2026 MForm 4 → | Aug 14, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 19,952 | — | — | 133,269 | — | 10b5-1 |
| Aug 10, 2026 MForm 4 → | Aug 12, 4:05 pm EDT | Emily M. LeproustChief Executive Officer, Director | 113,318 | — | — | 153,221 | — | 10b5-1 |
| Aug 7, 2026 MForm 4 → | Aug 11, 4:05 pm EDT | Robert ChessDirector | 18,417 | — | — | 0 | — | 10b5-1 |
| Jun 15, 2026 MForm 4 → | Jun 17, 4:05 pm EDT | Paula GreenSVP of Human Resources | 26,137 | — | — | 0 | — | |
| Feb 4, 2019 AForm 4 → | Feb 5, 5:26 pm EST | Martin KunzSVP, Operations | 60,371 | — | — | 60,371 | — | |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:46 pm EST | Patrick WeissSVP, R&D GM Data Storage | 118,439 | — | — | 118,439 | — | |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:45 pm EST | James M ThorburnChief Financial Officer | 91,004 | — | — | 91,004 | — | |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:45 pm EST | Bill PeckChief Technology Officer | 35,004 | — | — | 35,004 | — | |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:44 pm EST | Emily M. LeproustPresident & CEO, Director | 266,539 | — | — | 266,539 | — | |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:42 pm EST | Paula GreenVP of Human Resources | 35,004 | — | — | 35,004 | — | |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:42 pm EST | Patrick John FinnSVP, Commercial Operations | 91,004 | — | — | 91,004 | — | |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:41 pm EST | Mark DanielsSVP, Chief Legal Officer | 70,000 | — | — | 70,000 | — | |
| Nov 19, 2018 AForm 4 → | Nov 21, 5:40 pm EST | William BanyaiChief Operating Officer, Director | 91,004 | — | — | 91,004 | — | |
| Nov 2, 2018 CForm 4 → | Nov 6, 5:02 pm EST | Ever Alpha Fund L.P.10% Owner | 3,294,961 | — | — | 0 | — | |
| Nov 2, 2018 CForm 4 → | Nov 6, 5:01 pm EST | Robert P RagusaDirector | 1,702,101 | — | — | 0 | — | |
| Nov 2, 2018 CForm 4 → | Nov 6, 5:01 pm EST | Fred B CravesDirector | 66,771 | — | — | 0 | — | |
| Nov 2, 2018 CForm 4 → | Nov 6, 5:00 pm EST | Keith CrandellDirector, 10% Owner | 3,286,568 | — | — | 0 | — | |
| Nov 2, 2018 CForm 4 → | Nov 6, 4:31 pm EST | ARCH Venture Partners VIII, LLC +610% Owner | 3,286,568 | — | — | 0 | — | |
| Oct 30, 2018 AForm 4 → | Nov 1, 6:49 pm EDT | Jan JohannessenDirector | 42,304 | — | — | 42,304 | — |