Dudediligence.

Twist Bioscience Corporation

TWSTNASDAQ · Biological Products, (No Diagnostic Substances)
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Last 12 months

Sales planned on beside the trades reported on , and whether each names a .

Planned ·

$133.1M

87 notices · 1,042,284 sh

Mar 3 to Oct 4

Reported ·

$28.5M

114 sales · 0 buys

Oct 2025 to Jun 2026

The two figures cover different periods.

31 of 114 reported sales carry the 10b5-1 box. Together they are 0.93% of the shares on issue.

PLANNED · FORM 144Mar 3 to Oct 4REPORTED · FORM 4Oct 2025 to Jun 2026N2025DJ2026FMAMJJASO2026-10-02: Green Paula, Form 1442026-10-02: WERNER ROBERT F., Form 1442026-10-02: Cho Dennis, Form 1442026-10-02: Leproust Emily M., Form 1442026-10-02: Laponis Adam, Form 1442026-10-02: Finn Patrick John, Form 1442026-10-01: Leproust Emily M., Form 1442026-09-24: Leproust Emily M., Form 1442026-09-21: Leproust Emily M., Form 1442026-09-21: Green Paula, Form 1442026-09-21: Cho Dennis, Form 1442026-09-17: Leproust Emily M., Form 1442026-09-17: Leproust Emily M., Form 1442026-09-08: Leproust Emily M., Form 1442026-09-08: Green Paula, Form 1442026-09-08: WERNER ROBERT F., Form 1442026-09-08: Cho Dennis, Form 1442026-08-25: Leproust Emily M., Form 1442026-08-24: WERNER ROBERT F., Form 1442026-08-21: Leproust Emily M., Form 1442026-08-21: Green Paula, Form 1442026-08-21: Laponis Adam, Form 1442026-08-21: Cho Dennis, Form 1442026-08-21: WERNER ROBERT F., Form 1442026-08-21: Finn Patrick John, Form 1442026-08-19: Cho Dennis, Form 1442026-08-18: Finn Patrick John, Form 1442026-08-12: Leproust Emily M., Form 1442026-08-12: BLAKE KATRYN, Form 1442026-08-10: Leproust Emily M., Form 1442026-08-07: CHESS ROBERT, Form 1442026-08-05: Cho Dennis, Form 1442026-08-03: Leproust Emily M., Form 1442026-08-03: Green Paula, Form 1442026-08-03: Cho Dennis, Form 1442026-08-03: Finn Patrick John, Form 1442026-08-03: WERNER ROBERT F., Form 1442026-07-23: Finn Patrick John, Form 1442026-07-09: Laponis Adam, Form 1442026-06-25: Leproust Emily M., Form 1442026-06-24: Cho Dennis, Form 1442026-06-22: Leproust Emily M., Form 1442026-06-22: Cho Dennis, Form 1442026-06-22: Green Paula, Form 1442026-06-15: Green Paula, Form 1442026-06-08: WERNER ROBERT F., Form 1442026-06-08: Cho Dennis, Form 1442026-06-08: WERNER ROBERT F., Form 1442026-06-08: Green Paula, Form 1442026-06-08: Leproust Emily M., Form 1442026-05-29: Cho Dennis, Form 1442026-05-29: Laponis Adam, Form 1442026-05-28: Leproust Emily M., Form 1442026-05-28: Starovasnik Melissa A., Form 1442026-05-27: Leproust Emily M., Form 1442026-05-26: Leproust Emily M., Form 1442026-05-26: WERNER ROBERT F., Form 1442026-05-26: Starovasnik Melissa A., Form 1442026-05-21: Green Paula, Form 1442026-05-21: Laponis Adam, Form 1442026-05-21: Leproust Emily M., Form 1442026-05-21: Cho Dennis, Form 1442026-05-21: WERNER ROBERT F., Form 1442026-05-21: Finn Patrick John, Form 1442026-05-12: JOHANNESSEN JAN, Form 1442026-05-08: WERNER ROBERT F., Form 1442026-05-04: Leproust Emily M., Form 1442026-05-04: Green Paula, Form 1442026-05-04: Finn Patrick John, Form 1442026-05-04: WERNER ROBERT F., Form 1442026-05-04: Cho Dennis, Form 1442026-04-27: Starovasnik Melissa A., Form 1442026-04-23: Finn Patrick John, Form 1442026-04-22: Leproust Emily M., Form 1442026-04-21: Leproust Emily M., Form 1442026-04-17: Laponis Adam, Form 1442026-04-14: Laponis Adam, Form 1442026-04-09: Laponis Adam, Form 1442026-04-01: Starovasnik Melissa A., Form 1442026-03-20: Leproust Emily M., Form 1442026-03-20: Cho Dennis, Form 1442026-03-20: Green Paula, Form 1442026-03-17: CHESS ROBERT, Form 1442026-03-06: WERNER ROBERT F., Form 1442026-03-06: Green Paula, Form 1442026-03-06: Cho Dennis, Form 1442026-03-06: Leproust Emily M., Form 1442025-10-06: Cho Dennis, sold2025-10-06: Finn Patrick John, sold2025-10-06: Green Paula, sold2025-10-06: WERNER ROBERT F., sold2025-10-06: Leproust Emily M., sold2025-10-06: Laponis Adam, sold2025-10-08: Laponis Adam, sold2025-10-23: Finn Patrick John, sold2025-10-30: WERNER ROBERT F., sold2025-10-30: Laponis Adam, sold2025-10-30: Leproust Emily M., sold2025-10-30: Green Paula, sold2025-10-30: Finn Patrick John, sold2025-10-30: Cho Dennis, sold2025-11-03: WERNER ROBERT F., sold2025-11-03: Leproust Emily M., sold2025-11-03: Green Paula, sold2025-11-03: Finn Patrick John, sold2025-11-03: Cho Dennis, sold2025-11-18: JOHANNESSEN JAN, sold2025-11-21: WERNER ROBERT F., sold2025-11-21: Leproust Emily M., sold2025-11-21: Laponis Adam, sold2025-11-21: Green Paula, sold2025-11-21: Finn Patrick John, sold2025-11-21: Cho Dennis, sold2025-12-08: WERNER ROBERT F., sold2025-12-08: Green Paula, sold2025-12-08: Leproust Emily M., sold2025-12-08: Cho Dennis, sold2025-12-22: Leproust Emily M., sold2025-12-22: Cho Dennis, sold2025-12-22: Green Paula, sold2026-01-09: Laponis Adam, sold2026-01-13: Finn Patrick John, sold2026-01-13: Laponis Adam, sold2026-01-23: Finn Patrick John, sold2026-02-03: Cho Dennis, sold2026-02-03: Finn Patrick John, sold2026-02-03: Green Paula, sold2026-02-03: WERNER ROBERT F., sold2026-02-03: Leproust Emily M., sold2026-02-06: JOHANNESSEN JAN, sold2026-02-11: Cho Dennis, sold2026-02-12: Laponis Adam, sold2026-02-12: Finn Patrick John, sold2026-02-13: CHESS ROBERT, sold2026-02-17: Finn Patrick John, sold2026-02-17: Green Paula, sold2026-02-23: Leproust Emily M., sold2026-02-23: Laponis Adam, sold2026-02-23: WERNER ROBERT F., sold2026-02-23: Finn Patrick John, sold2026-02-23: Cho Dennis, sold2026-02-23: Green Paula, sold2026-03-06: Leproust Emily M., sold2026-03-06: Green Paula, sold2026-03-06: Cho Dennis, sold2026-03-06: WERNER ROBERT F., sold2026-03-17: CHESS ROBERT, sold2026-03-20: Leproust Emily M., sold2026-03-20: Green Paula, sold2026-03-20: Cho Dennis, sold2026-04-01: Starovasnik Melissa A., sold2026-04-09: Laponis Adam, sold2026-04-14: Laponis Adam, sold2026-04-17: Laponis Adam, sold2026-04-21: Leproust Emily M., sold2026-04-23: Finn Patrick John, sold2026-04-27: Starovasnik Melissa A., sold2026-05-04: WERNER ROBERT F., sold2026-05-04: Green Paula, sold2026-05-04: Finn Patrick John, sold2026-05-04: Leproust Emily M., sold2026-05-04: Cho Dennis, sold2026-05-08: WERNER ROBERT F., sold2026-05-12: JOHANNESSEN JAN, sold2026-05-21: Cho Dennis, sold2026-05-21: Finn Patrick John, sold2026-05-21: Green Paula, sold2026-05-21: Laponis Adam, sold2026-05-21: Leproust Emily M., sold2026-05-21: WERNER ROBERT F., sold2026-05-26: Starovasnik Melissa A., sold2026-05-26: WERNER ROBERT F., sold2026-05-26: Leproust Emily M., sold2026-05-28: Starovasnik Melissa A., sold2026-05-28: Leproust Emily M., sold2026-05-29: Laponis Adam, sold2026-05-29: Cho Dennis, sold2026-06-08: WERNER ROBERT F., sold2026-06-08: Leproust Emily M., sold2026-06-08: Green Paula, sold2026-06-08: Cho Dennis, sold2026-06-15: Green Paula, sold2026-06-22: Leproust Emily M., sold2026-06-22: Cho Dennis, sold2026-06-22: Green Paula, sold
under a no plan named▼ salesize is dollars

Form 144 notices, newest first

2026-10-02Green Paula, SVP of Human Resources$1,905,460
10,088 shno plan dateForm 4s on file end Jun 23144 ↗
2026-10-02WERNER ROBERT F., Chief Accounting Officer$279,926
1,482 shno plan dateForm 4s on file end Jun 23144 ↗
2026-10-02Cho Dennis, See Remarks$1,797,040
9,514 shno plan dateForm 4s on file end Jun 23144 ↗
2026-10-02Leproust Emily M., Chief Executive Officer$8,638,789
45,736 shno plan dateForm 4s on file end Jun 23144 ↗
2026-10-02Laponis Adam, Chief Financial Officer$1,521,837
8,057 shno plan dateForm 4s on file end Jun 23144 ↗
2026-10-02Finn Patrick John, President and COO$4,856,958
25,714 shno plan dateForm 4s on file end Jun 23144 ↗
2026-10-01Leproust Emily M., Chief Executive Officer$131,000
655 shplan 2026-06-15Form 4s on file end Jun 23144 ↗
2026-09-24Leproust Emily M., Chief Executive Officer$922,906
5,203 shplan 2026-06-15Form 4s on file end Jun 23144 ↗
2026-09-21Leproust Emily M., Chief Executive Officer$279,184
1,687 shno plan dateForm 4s on file end Jun 23144 ↗
2026-09-21Green Paula, SVP of Human Resources$48,654
294 shno plan dateForm 4s on file end Jun 23144 ↗
2026-09-21Cho Dennis, See Remarks$57,591
348 shno plan dateForm 4s on file end Jun 23144 ↗
2026-09-17Leproust Emily M., Chief Executive Officer$44.7M
295,037 shplan 2026-06-15Form 4s on file end Jun 23144 ↗
2026-09-17Leproust Emily M., Chief Executive Officer$9,314,308
61,509 shplan 2026-06-15Form 4s on file end Jun 23144 ↗
2026-09-08Leproust Emily M., Chief Executive Officer$282,280
2,302 shno plan dateForm 4s on file end Jun 23144 ↗
2026-09-08Green Paula, SVP of Human Resources$111,220
907 shno plan dateForm 4s on file end Jun 23144 ↗
2026-09-08WERNER ROBERT F., Chief Accounting Officer$29,184
238 shno plan dateForm 4s on file end Jun 23144 ↗
2026-09-08Cho Dennis, See Remarks$50,521
412 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-25Leproust Emily M., Chief Executive Officer$6,317,761
41,570 shplan 2025-05-27Form 4s on file end Jun 23144 ↗
2026-08-24WERNER ROBERT F., Chief Accounting Officer$120,220
854 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-21Leproust Emily M., Chief Executive Officer$923,262
6,639 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-21Green Paula, SVP of Human Resources$189,130
1,360 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-21Laponis Adam, Chief Financial Officer$273,265
1,965 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-21Cho Dennis, See Remarks$222,228
1,598 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-21WERNER ROBERT F., Chief Accounting Officer$93,035
669 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-21Finn Patrick John, President and COO$562,663
4,046 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-19Cho Dennis, See Remarks$1,843,099
14,205 shplan 2026-02-17Form 4s on file end Jun 23144 ↗
2026-08-18Finn Patrick John, President and COO$9,528,752
78,355 shplan 2026-05-18Form 4s on file end Jun 23144 ↗
2026-08-12Leproust Emily M., Chief Executive Officer$2,495,507
19,952 shplan 2025-05-27Form 4s on file end Jun 23144 ↗
2026-08-12BLAKE KATRYN, Director$275,250
2,240 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-10Leproust Emily M., Chief Executive Officer$14.2M
113,318 shplan 2025-05-27Form 4s on file end Jun 23144 ↗
2026-08-07CHESS ROBERT, Director$2,042,261
18,417 shplan 2026-05-08Form 4s on file end Jun 23144 ↗
2026-08-05Cho Dennis, See Remarks$1,558,999
14,205 shplan 2026-02-17Form 4s on file end Jun 23144 ↗
2026-08-03Leproust Emily M., Chief Executive Officer$435,223
5,101 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-03Green Paula, SVP of Human Resources$96,669
1,133 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-03Cho Dennis, See Remarks$91,294
1,070 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-03Finn Patrick John, President and COO$246,408
2,888 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-03WERNER ROBERT F., Chief Accounting Officer$14,249
167 shno plan dateForm 4s on file end Jun 23144 ↗
2026-07-23Finn Patrick John, President and COO$210,133
2,238 shno plan dateForm 4s on file end Jun 23144 ↗
2026-07-09Laponis Adam, Chief Financial Officer$226,306
2,399 shno plan dateForm 4s on file end Jun 23144 ↗
2026-06-25Leproust Emily M., Chief Executive Officer$1,793,600
18,880 shplan 2026-06-15144 ↗
Form 4, 2026-06-26: sold 18,880 at $95.00 Form 4 ↗
2026-06-24Cho Dennis, See Remarks$1,274,899
14,205 shplan 2026-02-17144 ↗
Form 4, 2026-06-26: sold 14,205 at $89.75 Form 4 ↗
2026-06-22Leproust Emily M., Chief Executive Officer$147,400
1,688 shno plan date144 ↗
Form 4, 2026-06-24: sold 1,688 at $87.32 Form 4 ↗
2026-06-22Cho Dennis, See Remarks$30,214
346 shno plan date144 ↗
Form 4, 2026-06-24: sold 346 at $87.32 Form 4 ↗
2026-06-22Green Paula, SVP of Human Resources$25,411
291 shno plan date144 ↗
Form 4, 2026-06-24: sold 291 at $87.32 Form 4 ↗
2026-06-15Green Paula, SVP of Human Resources$2,134,487
26,137 shno plan date144 ↗
Form 4, 2026-06-17: sold 26,137 at $81.66 Form 4 ↗
2026-06-08WERNER ROBERT F., Chief Accounting Officer$77,842
1,127 shno plan date144 ↗
Form 4, 2026-06-10: sold 1,359 at $69.20 Form 4 ↗
2026-06-08Cho Dennis, See Remarks$28,077
402 shno plan date144 ↗
Form 4, 2026-06-10: sold 402 at $69.84 Form 4 ↗
2026-06-08WERNER ROBERT F., Chief Accounting Officer$16,204
232 shno plan dateForm 4s on file end Jun 23144 ↗
2026-06-08Green Paula, SVP of Human Resources$61,742
884 shno plan date144 ↗
Form 4, 2026-06-10: sold 884 at $69.84 Form 4 ↗
2026-06-08Leproust Emily M., Chief Executive Officer$158,197
2,265 shno plan date144 ↗
Form 4, 2026-06-10: sold 2,265 at $69.84 Form 4 ↗
2026-05-29Cho Dennis, See Remarks$990,799
14,205 shplan 2026-02-17144 ↗
Form 4, 2026-06-02: sold 14,205 at $69.75 Form 4 ↗
2026-05-29Laponis Adam, Chief Financial Officer$280,000
4,000 shplan 2025-05-08144 ↗
Form 4, 2026-06-02: sold 4,000 at $70.00 Form 4 ↗
2026-05-28Leproust Emily M., Chief Executive Officer$1,118,555
16,470 shplan 2025-05-27144 ↗
Form 4, 2026-06-01: sold 16,470 at $67.91 Form 4 ↗
2026-05-28Starovasnik Melissa A., Director$170,000
2,500 shplan 2025-11-22144 ↗
Form 4, 2026-06-01: sold 2,500 at $68.00 Form 4 ↗
2026-05-27Leproust Emily M., Chief Executive Officer$1,633,407
25,017 shplan 2025-05-27Form 4s on file end Jun 23144 ↗
2026-05-26Leproust Emily M., Chief Executive Officer$1,580,247
24,282 shplan 2025-05-27144 ↗
Form 4, 2026-05-28: sold 49,299 at $65.19 Form 4 ↗
2026-05-26WERNER ROBERT F., Chief Accounting Officer$49,987
800 shno plan date144 ↗
Form 4, 2026-05-28: sold 800 at $62.48 Form 4 ↗
2026-05-26Starovasnik Melissa A., Director$30,520
500 shplan 2025-11-22144 ↗
Form 4, 2026-05-28: sold 500 at $61.04 Form 4 ↗
2026-05-21Green Paula, SVP of Human Resources$74,506
1,399 shno plan date144 ↗
Form 4, 2026-05-26: sold 1,399 at $53.26 Form 4 ↗
2026-05-21Laponis Adam, Chief Financial Officer$107,525
2,019 shno plan date144 ↗
Form 4, 2026-05-26: sold 2,019 at $53.26 Form 4 ↗
2026-05-21Leproust Emily M., Chief Executive Officer$366,831
6,888 shno plan date144 ↗
Form 4, 2026-05-26: sold 6,888 at $53.26 Form 4 ↗
2026-05-21Cho Dennis, See Remarks$87,447
1,642 shno plan date144 ↗
Form 4, 2026-05-26: sold 1,642 at $53.26 Form 4 ↗
2026-05-21WERNER ROBERT F., Chief Accounting Officer$36,641
688 shno plan date144 ↗
Form 4, 2026-05-26: sold 688 at $53.26 Form 4 ↗
2026-05-21Finn Patrick John, President and COO$221,547
4,160 shno plan date144 ↗
Form 4, 2026-05-26: sold 4,160 at $53.26 Form 4 ↗
2026-05-12JOHANNESSEN JAN, Director$673,440
12,000 shno plan date144 ↗
Form 4, 2026-05-14: sold 12,000 at $56.12 Form 4 ↗
2026-05-08WERNER ROBERT F., Chief Accounting Officer$282,187
4,961 shno plan date144 ↗
Form 4, 2026-05-12: sold 4,961 at $56.88 Form 4 ↗
2026-05-04Leproust Emily M., Chief Executive Officer$293,002
5,127 shno plan date144 ↗
Form 4, 2026-05-06: sold 5,127 at $57.15 Form 4 ↗
2026-05-04Green Paula, SVP of Human Resources$63,778
1,116 shno plan date144 ↗
Form 4, 2026-05-06: sold 1,116 at $57.15 Form 4 ↗
2026-05-04Finn Patrick John, President and COO$162,531
2,844 shno plan date144 ↗
Form 4, 2026-05-06: sold 2,844 at $57.15 Form 4 ↗
2026-05-04WERNER ROBERT F., Chief Accounting Officer$9,372
164 shno plan date144 ↗
Form 4, 2026-05-06: sold 164 at $57.15 Form 4 ↗
2026-05-04Cho Dennis, See Remarks$112,126
1,962 shno plan date144 ↗
Form 4, 2026-05-06: sold 1,962 at $57.15 Form 4 ↗
2026-04-27Starovasnik Melissa A., Director$30,915
500 shplan 2025-11-22144 ↗
Form 4, 2026-04-29: sold 500 at $61.83 Form 4 ↗
2026-04-23Finn Patrick John, President and COO$141,027
2,321 shno plan date144 ↗
Form 4, 2026-04-27: sold 2,321 at $60.76 Form 4 ↗
2026-04-22Leproust Emily M., Chief Executive Officer$526,290
8,061 shplan 2025-05-27Form 4s on file end Jun 23144 ↗
2026-04-21Leproust Emily M., Chief Executive Officer$104,665
1,610 shplan 2025-05-27144 ↗
Form 4, 2026-04-23: sold 9,671 at $65.25 Form 4 ↗
2026-04-17Laponis Adam, Chief Financial Officer$240,000
4,000 shplan 2025-05-08144 ↗
Form 4, 2026-04-21: sold 4,000 at $60.00 Form 4 ↗
2026-04-14Laponis Adam, Chief Financial Officer$165,000
3,000 shplan 2025-05-08144 ↗
Form 4, 2026-04-16: sold 3,000 at $55.00 Form 4 ↗
2026-04-09Laponis Adam, Chief Financial Officer$129,561
2,597 shno plan date144 ↗
Form 4, 2026-04-13: sold 2,597 at $49.89 Form 4 ↗
2026-04-01Starovasnik Melissa A., Director$51,000
1,000 shplan 2025-11-22144 ↗
Form 4, 2026-04-03: sold 1,000 at $51.00 Form 4 ↗
2026-03-20Leproust Emily M., Chief Executive Officer$76,276
1,742 shno plan date144 ↗
Form 4, 2026-03-24: sold 1,742 at $43.79 Form 4 ↗
2026-03-20Cho Dennis, See Remarks$15,500
354 shno plan date144 ↗
Form 4, 2026-03-24: sold 354 at $43.79 Form 4 ↗
2026-03-20Green Paula, SVP of Human Resources$13,005
297 shno plan date144 ↗
Form 4, 2026-03-24: sold 297 at $43.79 Form 4 ↗
2026-03-17CHESS ROBERT, Director$470,000
10,000 shplan 2025-12-10144 ↗
Form 4, 2026-03-19: sold 10,000 at $47.00 Form 4 ↗
2026-03-06WERNER ROBERT F., Chief Accounting Officer$11,421
246 shno plan date144 ↗
Form 4, 2026-03-10: sold 246 at $46.43 Form 4 ↗
2026-03-06Green Paula, SVP of Human Resources$43,409
935 shno plan date144 ↗
Form 4, 2026-03-10: sold 935 at $46.43 Form 4 ↗
2026-03-06Cho Dennis, See Remarks$19,731
425 shno plan date144 ↗
Form 4, 2026-03-10: sold 425 at $46.43 Form 4 ↗
2026-03-06Leproust Emily M., Chief Executive Officer$112,491
2,423 shno plan date144 ↗
Form 4, 2026-03-10: sold 2,423 at $46.43 Form 4 ↗