Twist Bioscience Corporation Insider Trading

TWST

Last 12 months

Insiders sold $147M and bought nothing on the open market.

82% of the selling was scheduled in advance under 10b5-1 plans. President and COO Patrick John Finn sold $4.86M on Oct 2, 12% of their stake, outside a plan. The last open-market buy by an executive or director was in May 2023.

Net open-market

−$147M

0 buys · 120 sales

Under a 10b5-1 plan

82%

of the value sold

Insiders who bought / sold

0 / 10

executives and directors

Last open-market buy

May 2023

May 10, 2023

Get an email when TWST's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 23	Patrick John Finn President and COO	SoldNo plan	2,245	$134.59	302K	1.2%	Form 4
Oct 9	Adam Laponis Chief Financial Officer	SoldNo plan	2,462	$156.30	385K	2.4%	Form 4
Oct 5	Emily M. Leproust Chief Executive Officer	Sold10b5-1 plan 8 parts	4,548	$202.15 average	919K	0.8%	Form 4
Oct 2	Adam Laponis Chief Financial Officer	SoldNo plan	8,057	$188.88	$1.52M	7.4%	Form 4
Oct 2	Paula Green SVP of Human Resources	SoldNo plan	10,088	$188.88	$1.91M	8.6%	Form 4
Oct 2	Patrick John Finn President and COO	SoldNo plan	25,714	$188.88	$4.86M	12%	Form 4
Oct 1 – 2	Emily M. Leproust Chief Executive Officer	Sold10b5-1 plan 2 parts	46,391	$189.04 average	$8.77M	7.6%	Form 4
Oct 2	Dennis Cho See Remarks	SoldNo plan	9,514	$188.88	$1.8M	13%	Form 4
Oct 2	Robert F. Werner Chief Accounting Officer	SoldNo plan	1,482	$188.88	280K	3.3%	Form 4
Sep 24	Emily M. Leproust Chief Executive Officer	Sold10b5-1 plan 10 parts	5,203	$177.38 average	923K	0.8%	Form 4
Sep 21	Dennis Cho See Remarks	SoldNo plan	348	$165.49	58K	0.5%	Form 4
Sep 21	Paula Green SVP of Human Resources	SoldNo plan	294	$165.49	49K	0.3%	Form 4
Sep 21	Emily M. Leproust Chief Executive Officer	SoldNo plan	1,687	$165.49	279K	0.3%	Form 4
Sep 17	Emily M. Leproust Chief Executive Officer	Sold10b5-1 plan 13 parts	356,546	$157.99 average	$56.3M	36%	Form 4
Sep 8	Dennis Cho See Remarks	SoldNo plan	412	$122.62	51K	0.6%	Form 4
Sep 8	Paula Green SVP of Human Resources	SoldNo plan	907	$122.62	111K	0.8%	Form 4
Sep 8	Emily M. Leproust Chief Executive Officer	SoldNo plan	2,302	$122.62	282K	0.3%	Form 4
Sep 8	Robert F. Werner Chief Accounting Officer	SoldNo plan	238	$122.62	29K	0.5%	Form 4
Aug 25	Emily M. Leproust Chief Executive Officer	Sold10b5-1 plan 5 parts	41,570	$151.98 average	$6.32M	5.1%	Form 4
Aug 21 – 24	Robert F. Werner Chief Accounting Officer	SoldNo plan 2 parts	1,523	$140.02 average	213K	3.3%	Form 4
Aug 21	Dennis Cho See Remarks	SoldNo plan	1,598	$139.07	222K	2.1%	Form 4
Aug 21	Patrick John Finn President and COO	SoldNo plan	4,046	$139.07	563K	1.9%	Form 4
Aug 21	Paula Green SVP of Human Resources	SoldNo plan	1,360	$139.07	189K	1.1%	Form 4
Aug 21	Adam Laponis Chief Financial Officer	SoldNo plan	1,965	$139.07	273K	1.8%	Form 4
Aug 21	Emily M. Leproust Chief Executive Officer	SoldNo plan	6,639	$139.07	923K	0.8%	Form 4
Aug 19	Dennis Cho See Remarks	Sold10b5-1 plan	14,205	$129.75	$1.84M	16%	Form 4
Aug 18	Patrick John Finn President and COO	Sold10b5-1 plan 7 parts	78,355	$117.64 average	$9.22M	27%	Form 4
Aug 12	Katryn Blake Director	SoldNo plan	2,240	$122.88	275K	12%	Form 4
Aug 12	Emily M. Leproust Chief Executive Officer	Sold10b5-1 plan	19,952	$125.08	$2.5M	2.4%	Form 4
Aug 10	Emily M. Leproust Chief Executive Officer	Sold10b5-1 plan	113,318	$125.16	$14.2M	12%	Form 4
Aug 7	Robert Chess Director	Sold10b5-1 plan	18,417	$110.89	$2.04M	22%	Form 4
Aug 5	Dennis Cho See Remarks	Sold10b5-1 plan	14,205	$109.75	$1.56M	14%	Form 4
Aug 3	Patrick John Finn President and COO	SoldNo plan	2,888	$85.32	246K	1.1%	Form 4
Aug 3	Paula Green SVP of Human Resources	SoldNo plan	1,133	$85.32	97K	0.9%	Form 4
Aug 3	Emily M. Leproust Chief Executive Officer	SoldNo plan	5,101	$85.32	435K	0.6%	Form 4
Aug 3	Robert F. Werner Chief Accounting Officer	SoldNo plan	167	$85.32	14K	0.4%	Form 4
Aug 3	Dennis Cho See Remarks	SoldNo plan	1,070	$85.32	91K	1.0%	Form 4
Jul 23	Patrick John Finn President and COO	SoldNo plan	2,238	$93.89	210K	0.8%	Form 4
Jul 9	Adam Laponis Chief Financial Officer	SoldNo plan	2,399	$94.33	226K	2.1%	Form 4
Jun 25	Emily M. Leproust Chief Executive Officer	Sold10b5-1 plan	18,880	$95.00	$1.79M	2.2%	Form 4

Oct 23No plan
Patrick John Finn
President and COO · sold 2,245 at $134.59
302K
1.2% of stake
Oct 9No plan
Adam Laponis
Chief Financial Officer · sold 2,462 at $156.30
385K
2.4% of stake
Oct 510b5-1 plan
Emily M. Leproust
Chief Executive Officer · sold 4,548 at avg $202.15
919K
0.8% of stake
Oct 2No plan
Adam Laponis
Chief Financial Officer · sold 8,057 at $188.88
$1.52M
7.4% of stake
Oct 2No plan
Paula Green
SVP of Human Resources · sold 10,088 at $188.88
$1.91M
8.6% of stake
Oct 2No plan
Patrick John Finn
President and COO · sold 25,714 at $188.88
$4.86M
12% of stake
Oct 1 – 210b5-1 plan
Emily M. Leproust
Chief Executive Officer · sold 46,391 at avg $189.04
$8.77M
7.6% of stake
Oct 2No plan
Dennis Cho
See Remarks · sold 9,514 at $188.88
$1.8M
13% of stake
Oct 2No plan
Robert F. Werner
Chief Accounting Officer · sold 1,482 at $188.88
280K
3.3% of stake
Sep 2410b5-1 plan
Emily M. Leproust
Chief Executive Officer · sold 5,203 at avg $177.38
923K
0.8% of stake
Sep 21No plan
Dennis Cho
See Remarks · sold 348 at $165.49
58K
0.5% of stake
Sep 21No plan
Paula Green
SVP of Human Resources · sold 294 at $165.49
49K
0.3% of stake
Sep 21No plan
Emily M. Leproust
Chief Executive Officer · sold 1,687 at $165.49
279K
0.3% of stake
Sep 1710b5-1 plan
Emily M. Leproust
Chief Executive Officer · sold 356,546 at avg $157.99
$56.3M
36% of stake
Sep 8No plan
Dennis Cho
See Remarks · sold 412 at $122.62
51K
0.6% of stake
Sep 8No plan
Paula Green
SVP of Human Resources · sold 907 at $122.62
111K
0.8% of stake
Sep 8No plan
Emily M. Leproust
Chief Executive Officer · sold 2,302 at $122.62
282K
0.3% of stake
Sep 8No plan
Robert F. Werner
Chief Accounting Officer · sold 238 at $122.62
29K
0.5% of stake
Aug 2510b5-1 plan
Emily M. Leproust
Chief Executive Officer · sold 41,570 at avg $151.98
$6.32M
5.1% of stake
Aug 21 – 24No plan
Robert F. Werner
Chief Accounting Officer · sold 1,523 at avg $140.02
213K
3.3% of stake
Aug 21No plan
Dennis Cho
See Remarks · sold 1,598 at $139.07
222K
2.1% of stake
Aug 21No plan
Patrick John Finn
President and COO · sold 4,046 at $139.07
563K
1.9% of stake
Aug 21No plan
Paula Green
SVP of Human Resources · sold 1,360 at $139.07
189K
1.1% of stake
Aug 21No plan
Adam Laponis
Chief Financial Officer · sold 1,965 at $139.07
273K
1.8% of stake
Aug 21No plan
Emily M. Leproust
Chief Executive Officer · sold 6,639 at $139.07
923K
0.8% of stake
Aug 1910b5-1 plan
Dennis Cho
See Remarks · sold 14,205 at $129.75
$1.84M
16% of stake
Aug 1810b5-1 plan
Patrick John Finn
President and COO · sold 78,355 at avg $117.64
$9.22M
27% of stake
Aug 12No plan
Katryn Blake
Director · sold 2,240 at $122.88
275K
12% of stake
Aug 1210b5-1 plan
Emily M. Leproust
Chief Executive Officer · sold 19,952 at $125.08
$2.5M
2.4% of stake
Aug 1010b5-1 plan
Emily M. Leproust
Chief Executive Officer · sold 113,318 at $125.16
$14.2M
12% of stake
Aug 710b5-1 plan
Robert Chess
Director · sold 18,417 at $110.89
$2.04M
22% of stake
Aug 510b5-1 plan
Dennis Cho
See Remarks · sold 14,205 at $109.75
$1.56M
14% of stake
Aug 3No plan
Patrick John Finn
President and COO · sold 2,888 at $85.32
246K
1.1% of stake
Aug 3No plan
Paula Green
SVP of Human Resources · sold 1,133 at $85.32
97K
0.9% of stake
Aug 3No plan
Emily M. Leproust
Chief Executive Officer · sold 5,101 at $85.32
435K
0.6% of stake
Aug 3No plan
Robert F. Werner
Chief Accounting Officer · sold 167 at $85.32
14K
0.4% of stake
Aug 3No plan
Dennis Cho
See Remarks · sold 1,070 at $85.32
91K
1.0% of stake
Jul 23No plan
Patrick John Finn
President and COO · sold 2,238 at $93.89
210K
0.8% of stake
Jul 9No plan
Adam Laponis
Chief Financial Officer · sold 2,399 at $94.33
226K
2.1% of stake
Jun 2510b5-1 plan
Emily M. Leproust
Chief Executive Officer · sold 18,880 at $95.00
$1.79M
2.2% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch TWST, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Held by ETFs

TWST is in 85 US ETFs. The largest of them, with TWST's weight in each:

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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