undamentalytics Newsletter

Twist Bioscience Corp insider trading

Every open-market purchase and sale by Twist Bioscience Corp's officers, directors and largest shareholders since November 4, 2021, and what the share price did next.

No insider has bought shares on the open market in five years.

Insider purchase Insider sale Marker size reflects trade value. Weekly closes adjusted for splits; may be delayed.
Twist Bioscience Corp insider open-market trades
DateInsiderTrade SharesPriceValue 1M after 3M after 6M after

From insiders' Form 4 filings with the SEC: open-market purchases and sales only (awards, option exercises and shares withheld for tax are excluded), combined to one line per insider per day. "Plan" marks trades the filing says were made under a pre-set Rule 10b5-1 trading plan, which are scheduled in advance. Price changes run from the close on the trade date; hover a figure for the change relative to the S&P 500. Past moves don't predict future ones.

Does following Twist Bioscience Corp’s insiders pay?

From August 20, 2019 to October 27, 2026, 17 insiders reported 2 open-market purchases and 258 sales not made under a pre-set plan in Twist Bioscience Corp. Twelve months after each purchase was reported, the shares were +81.6% against the S&P 500 on average (median +81.6%), over 2 purchases with a full year of prices; 50% beat the index. After sales, the shares moved +46.8% against the index over 12 months (a negative figure means selling was the right call). That rests on fewer than 20 purchases, too few to read much into. Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on May 16, 2022 into $12,804 by November 2, 2026, +5.7% a year. It held shares 41% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $14,746 (+9.1% a year), and held throughout $20,083 (+17.0%).

$0$10.0k$20.0k 20222023202420252026 $20.1k$14.7k$12.8k
Copying Twist Bioscience Corp's insidersS&P 500, same days investedS&P 500, held throughout $10,000 copying every open-market purchase by Twist Bioscience Corp's insiders from May 16, 2022, before costs and taxes, marked weekly. Uninvested money earns the Treasury bill rate; the portfolio held shares 41% of the time.
Twist Bioscience Corp: each insider's record
InsiderRolePurchases12 months after their purchasesBeat the S&P 500Sales12 months after their salesLatest report
Leproust Emily M. Chief Executive Officer 0 — — 53 +61.7% (36) September 23, 2026
Green Paula SVP of Human Resources 0 — — 50 +41.3% (31) October 5, 2026
Cho Dennis See Remarks 1 +228.6% (1) 100% 40 +32.3% (22) October 5, 2026
Finn Patrick John President and COO 0 — — 38 +57.4% (24) October 27, 2026
Werner Robert F. Chief Accounting Officer 0 — — 23 +57.0% (10) October 5, 2026
Laponis Adam Chief Financial Officer 0 — — 21 +79.8% (11) October 13, 2026
Daniels Mark See Remarks 0 — — 5 +86.4% (5) August 18, 2020
Johannessen Jan Director 0 — — 5 −3.2% (2) May 14, 2026
Thorburn James M Chief Financial Officer 0 — — 5 +15.3% (5) August 18, 2022
Banyai William See Remark 0 — — 4 −4.0% (4) May 7, 2024
Chess Robert Director 0 — — 4 −22.6% (3) February 18, 2026
Weiss Patrick Chief Operating Officer 0 — — 4 +85.2% (4) December 16, 2020
Barthelemy Nicolas Director 1 −65.4% (1) 0% 1 −80.3% (1) May 13, 2022
Crandell Keith Director 0 — — 2 −59.8% (2) August 13, 2021
Blake Katryn Director 0 — — 1 — August 14, 2026
Ragusa Robert P Director 0 — — 1 −66.2% (1) March 5, 2021
Starovasnik Melissa A. Director 0 — — 1 +47.5% (1) February 13, 2023

Moves are the shares’ return including dividends minus the S&P 500’s, from the close on the first trading day after each report; the number of trades with a finished 12-month window is in brackets. Green means the trade went the insider’s way (a purchase ahead of the index, a sale followed by the shares trailing it). A trade reported both by a director or officer and by a fund or company they are linked to counts once here, under the person. Purchases count only where the share price actually traded was at least $5. These figures describe what the shares did, not why anyone traded. Insiders across all companies.

When several insiders traded Twist Bioscience Corp

Months when 2 or more insiders became net buyers, or 3 or more net sellers, of Twist Bioscience Corp in reports dated in the 91 days before the month end, and how the stock did against the S&P 500 from that month end. After 3 selling crowds, +83.3%. One company's history is too short to judge by; the test across every company is the better guide.

MonthCrowd3 months on, vs S&P 5006 months12 months
March 28, 20245 selling+39.3%+25.3%+4.9%
June 30, 20203 selling+65.7%+184.4%+153.3%
September 30, 20193 selling−20.5%+40.3%+215.8%

Colours show whether the crowd was right: green when buyers were followed by a rise above the index, or sellers by a fall below it. Total returns from the month end; past patterns are not a forecast.

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