Company · Ownership research

Twist Bioscience Corp TWST

CIK 0001581280

Form 4 transactions dated Sep 1, 2023 to Sep 23, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 97 rows; the complete set is available through the API.

Insider filings on file run through 2026-09-10.

Insider purchases & sales

Purchased: $0.00
Sold: $85.48M

Sep 1, 2023 – Sep 10, 2026
Available records · partial months are marked ·

202610 of 30 preview events · 97 available in 2026

Date	Insider	Activity	Trade value (USD)	% of prior holding
2026-09-08	Cho Dennis See Remarks	Sale	$50.52K 412 shares sold	0.56% sold Direct holding	▾
2026-09-08	Green Paula SVP of Human Resources	Sale	$111.22K 907 shares sold	0.77% sold Direct holding	▾
2026-09-08	Leproust Emily M. Chief Executive Officer · Director	Sale	$282.28K 2,302 shares sold	0.30% sold Direct holding	▾
2026-09-08	WERNER ROBERT F. Chief Accounting Officer	Sale	$29.18K 238 shares sold	0.53% sold Direct holding	▾
2026-08-25	Leproust Emily M. Chief Executive Officer · Director	Sale10b5-1 footnote	$6.32M 41,570 shares sold	5.12% sold Direct holding	▾
2026-08-24	WERNER ROBERT F. Chief Accounting Officer	Sale	$120.22K 854 shares sold	1.88% sold Direct holding	▾
2026-08-21	Cho Dennis See Remarks	Sale	$222.23K 1,598 shares sold	2.11% sold Direct holding	▾
2026-08-21	Finn Patrick John President and COO	Sale	$562.66K 4,046 shares sold	1.88% sold Direct holding	▾
2026-08-21	Green Paula SVP of Human Resources	Sale	$189.13K 1,360 shares sold	1.14% sold Direct holding	▾
2026-08-21	Laponis Adam Chief Financial Officer	Sale	$273.26K 1,965 shares sold	1.78% sold Direct holding	▾

Showing 30 / 97 record groups in 2026. The complete set is available through the API.

Twist Bioscience Corp · TWST

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 30 of 97 purchase / sale groups and 30 of 44 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"TWST","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.