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Twist Bioscience (TWST) Insider Trading & Ownership

Twist Bioscience logo
$188.67 +0.62 (+0.33%)
Closing price 10/2/2026 04:00 PM Eastern
Extended Trading
$189.10 +0.44 (+0.23%)
As of 10/2/2026 07:46 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

Twist Bioscience (NASDAQ:TWST) Insider Buying and Selling Activity

Current
Insider Ownership
Percentage
3.08%
Number Of
Insiders Buying
(Last 12 Months)
0
Number Of
Insiders Selling
(Last 12 Months)
8
Amount Of
Insider Selling
(Last 12 Months)
$89.67M
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TWST Insider Buying and Selling by Quarter

Twist Bioscience Insider and Congressional Trades History

Transaction DateInsiderBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails
9/24/2026Sell5,203$177.38$922,908.14  
9/21/2026
Dennis Cho
Insider
Sell348$165.49$57,590.52  
9/21/2026Sell1,687$165.49$279,181.63  
9/21/2026Sell294$165.49$48,654.06  
9/17/2026Sell356,546$157.99$56,330,702.54  
9/8/2026
Dennis Cho
Insider
Sell412$122.62$50,519.44  
8/25/2026Sell41,570$151.98$6,317,808.60  
8/10/2026Sell113,318$125.16$14,182,880.88  
7/9/2026Sell2,399$94.33$226,297.67  
6/25/2026Sell18,880$95.00$1,793,600.00  
6/24/2026
Dennis Cho
Insider
Sell14,205$89.75$1,274,898.75  
6/22/2026
Dennis Cho
Insider
Sell346$87.32$30,212.72  
6/22/2026Sell1,688$87.32$147,396.16  
6/22/2026Sell291$87.32$25,410.12  
6/8/2026
Dennis Cho
Insider
Sell402$69.84$28,075.68  
5/12/2026Sell12,000$56.12$673,440.00  
4/27/2026
Melissa A Starovasnik
Director
Sell500$61.83$30,915.00  
4/22/2026Sell8,061$65.29$526,302.69  
4/21/2026Sell1,610$65.01$104,666.10  
4/17/2026Sell4,000$60.00$240,000.00  
4/14/2026Sell3,000$55.00$165,000.00  
4/9/2026Sell2,597$49.89$129,564.33  
4/1/2026
Melissa A Starovasnik
Director
Sell1,000$51.00$51,000.00  
3/17/2026
Robert Chess
Robert Chess
Director
Sell10,000$47.00$470,000.00  
3/6/2026
Dennis Cho
Insider
Sell425$46.43$19,732.75  
3/6/2026Sell2,423$46.43$112,499.89  
3/6/2026Sell935$46.43$43,412.05  
2/12/2026Sell7,000$50.00$350,000.00  
2/11/2026
Dennis Cho
Insider
Sell5,000$49.93$249,650.00  
2/6/2026Sell2,200$47.91$105,402.00  
2/4/2026Sell7,000$45.65$319,550.00  
2/3/2026
Dennis Cho
Insider
Sell1,099$46.58$51,191.42  
2/3/2026Sell5,001$46.58$232,946.58  
2/3/2026Sell1,194$46.58$55,616.52  
2/3/2026Sell175$46.58$8,151.50  
1/13/2026Sell3,000$40.00$120,000.00  
1/9/2026Sell2,738$35.26$96,541.88  
12/22/2025
Dennis Cho
Insider
Sell324$34.56$11,197.44  
12/22/2025Sell1,605$34.56$55,468.80  
12/22/2025Sell273$34.56$9,434.88  
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11/3/2025
Dennis Cho
Insider
Sell1,019$32.08$32,689.52  
11/3/2025Sell4,887$32.08$156,774.96  
11/3/2025Sell1,084$32.08$34,774.72  
11/3/2025Sell160$32.08$5,132.80  
10/30/2025Sell5,517$31.44$173,454.48  
10/30/2025
Dennis Cho
Insider
Sell6,515$31.44$204,831.60  
10/30/2025Sell31,379$31.44$986,555.76  
10/30/2025Sell6,920$31.44$217,564.80  
10/30/2025Sell1,016$31.44$31,943.04  
10/9/2025Sell2,517$32.92$82,859.64  
10/8/2025Sell3,000$31.15$93,450.00  
10/6/2025Sell5,875$32.19$189,116.25  
10/6/2025
Dennis Cho
Insider
Sell3,876$32.19$124,768.44  
10/6/2025Sell31,348$32.19$1,009,092.12  
10/6/2025Sell9,724$32.19$313,015.56  
10/6/2025Sell2,041$32.19$65,699.79  
(Data available from 1/1/2013 forward)

TWST Insider Trading Activity - Frequently Asked Questions

The list of insiders at Twist Bioscience includes Adam Laponis, Dennis Cho, Emily M Leproust, Jan Johannessen, Melissa A Starovasnik, Patrick John Finn, Paula Green, Robert Chess, Robert F Werner, and William Banyai. Learn more on insiders at TWST.

3.08% of Twist Bioscience stock is owned by insiders. Learn more on TWST's insider holdings.

The following insiders have sold TWST shares in the last 24 months: Adam Laponis ($2,463,513.32), Dennis Cho ($2,420,802.59), Emily M Leproust ($85,499,288.97), Jan Johannessen ($778,842.00), Melissa A Starovasnik ($81,915.00), Patrick John Finn ($1,507,319.40), Paula Green ($1,386,936.03), Robert Chess ($1,228,020.60), and Robert F Werner ($575,058.42).

Insiders have sold a total of 901,867 Twist Bioscience shares in the last 24 months for a total of $95,941,696.33 sold.



Insider trading data for NASDAQ:TWST was last updated on 9/24/2026, the date of the most recent reported insider or congressional trade. New trades are added as they're reported.
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