Twist Bioscience Corporation TWST NASDAQ

NASDAQ Global Select • Healthcare • Medical - Diagnostics & Research • US • USD

SharesGrow Score

55/100

3/7 Pass

SharesGrow Intrinsic Value

Twist Bioscience Corporation (TWST) has 20 known insider and institutional holders on record. The largest holder is Leproust Emily M. with 858,887 shares. Other notable holders include Banyai William and Finn Patrick John.

Over the last 12 months, insiders have made 105 transactions in TWST stock — 19 buys (valued at RSU Award) and 79 sells (valued at $10.07M). Insider selling has exceeded buying during this period.

TWST Insider Ownership

Top Holder

Leproust Emily M.

858,887 shares

Buys (12 mo)

$0.00 value

Sells (12 mo)

$10.07M value

12-Month Transaction Activity

Buy 18%

Sell 75%

Top Insider Holders

#	Name	Role	Shares Owned	Last Filed	Relative Size
1	Leproust Emily M.	Chief Executive Officer	858,887	2026-03-24	100%
2	Banyai William	See Remark	345,188	2024-05-07	40%
3	Finn Patrick John	President and COO	284,129	2026-02-25	33%
4	Cho Dennis	See Remarks	137,903	2026-03-24	16%
5	Laponis Adam	Chief Financial Officer	128,291	2026-02-25	15%
6	Green Paula	SVP of Human Resources	124,104	2026-03-24	14%
7	Thorburn James M	Chief Financial Officer	86,334	2024-01-04	10%
8	Daniels Mark	Officer	66,736	2021-04-07	8%
9	Werner Robert F.	Chief Accounting Officer	54,799	2026-03-10	6%
10	Weiss Patrick	Chief Operating Officer	47,401	2022-04-05	6%
11	Chan Nelson	Director	33,251	2026-02-09	4%
12	Mai Xiaoying	Director	31,057	2024-02-09	4%
13	Ragusa Robert P	Director	28,983	2026-02-09	3%
14	Chan Nelson C	Director	28,156	2025-02-07	3%
15	Crandell Keith	Director	27,571	2026-02-09	3%
16	Starovasnik Melissa A.	Director	25,722	2026-04-03	3%
17	Johannessen Jan	Director	19,954	2026-02-09	2%
18	Blake Katryn	Director	19,448	2026-02-09	2%
19	Chess Robert	Director	18,417	2026-03-19	2%
20	Barthelemy Nicolas	Director	11,279	2022-11-23	1%

Recent Transactions (last 12 months)

Date	Name	Role	Type	Shares	Price	Value
2026-04-01	Starovasnik Melissa A.	Director	Informative Sell	1,000	$51.00	$51K
2026-03-20	Cho Dennis	See Remarks	Informative Sell	354	$43.79	$15.5K
2026-03-20	Green Paula	SVP of Human Resources	Informative Sell	297	$43.79	$13K
2026-03-20	Leproust Emily M.	Chief Executive Officer	Informative Sell	1,742	$43.79	$76.28K
2026-03-17	Chess Robert	Director	Option Exercise (Sell)	10,000	$11.89	$118.9K
2026-03-06	Cho Dennis	See Remarks	Informative Sell	425	$46.43	$19.73K
2026-03-06	Green Paula	SVP of Human Resources	Informative Sell	935	$46.43	$43.41K
2026-03-06	Leproust Emily M.	Chief Executive Officer	Informative Sell	2,423	$46.43	$112.49K
2026-03-06	Werner Robert F.	Chief Accounting Officer	Informative Sell	246	$46.43	$11.42K
2026-02-23	Cho Dennis	See Remarks	Informative Sell	844	$46.71	$39.42K
2026-02-23	Laponis Adam	Chief Financial Officer	Informative Sell	2,085	$46.71	$97.39K
2026-02-23	Finn Patrick John	President and COO	Informative Sell	4,294	$46.71	$200.57K
2026-02-23	Green Paula	SVP of Human Resources	Informative Sell	1,465	$46.71	$68.43K
2026-02-23	Leproust Emily M.	Chief Executive Officer	Informative Sell	7,205	$46.71	$336.54K
2026-02-23	Werner Robert F.	Chief Accounting Officer	Informative Sell	1,693	$46.71	$79.08K
2026-02-17	Finn Patrick John	President and COO	Option Exercise (Sell)	18,205	$23.33	$424.72K
2026-02-17	Green Paula	SVP of Human Resources	Informative Sell	39,404	$52.40	$2.06M
2026-02-13	Chess Robert	Director	Informative Sell	2,184	$48.26	$105.4K
2026-02-13	Finn Patrick John	President and COO	Option Exercise (Sell)	500	$23.33	$11.67K
2026-02-12	Finn Patrick John	President and COO	Option Exercise (Sell)	1,000	$23.33	$23.33K
2026-02-11	Cho Dennis	See Remarks	Informative Sell	5,000	$49.93	$249.65K
2026-02-12	Laponis Adam	Chief Financial Officer	Informative Sell	7,000	$50.00	$350K
2026-02-09	Werner Robert F.	Chief Accounting Officer	Gift (Given)	2,000	-	-
2026-02-05	Starovasnik Melissa A.	Director	RSU Award	5,095	-	-
2026-02-05	Blake Katryn	Director	RSU Award	5,095	-	-