TWST insider trading

SEC Form 4 transactions reported by Twist Bioscience Corporation insiders, officers, directors, and 10%+ beneficial owners. Sourced from EDGAR.

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Recent TWST insider transactions

The 20 most recent non-derivative Form 4 transactions reported by Twist Bioscience Corporation insiders. Buys are highlighted; the transaction code column matches SEC Form 4 codes (P = open-market purchase, S = sale, A = grant, M = option exercise, F = tax withholding).

Date	Code	Insider	Role	Shares	Price	Value
2026-06-25	S	Leproust Emily M.	Chief Executive Officer, Director	18,880	$95	$1.8M
2026-06-24	S	Cho Dennis	See Remarks	14,205	$90	$1.3M
2026-06-22	S	Green Paula	SVP of Human Resources	291	$87	$25K
2026-06-22	S	Cho Dennis	See Remarks	346	$87	$30K
2026-06-22	S	Leproust Emily M.	Chief Executive Officer, Director	1,688	$87	$147K
2026-06-15	S	Green Paula	SVP of Human Resources	2,028	$82	$167K
2026-06-15	M	Green Paula	SVP of Human Resources	26,137	$23	$610K
2026-06-15	S	Green Paula	SVP of Human Resources	24,109	$82	$2.0M
2026-06-08	S	WERNER ROBERT F.	Chief Accounting Officer	232	$70	$16K
2026-06-08	G	WERNER ROBERT F.	Chief Accounting Officer	500	n/a
2026-06-08	S	Cho Dennis	See Remarks	402	$70	$28K
2026-06-08	S	Leproust Emily M.	Chief Executive Officer, Director	2,265	$70	$158K
2026-06-08	S	WERNER ROBERT F.	Chief Accounting Officer	1,127	$69	$78K
2026-06-08	S	Green Paula	SVP of Human Resources	884	$70	$62K
2026-05-29	S	Laponis Adam	Chief Financial Officer	4,000	$70	$280K
2026-05-29	S	Cho Dennis	See Remarks	14,205	$70	$991K
2026-05-28	S	Leproust Emily M.	Chief Executive Officer, Director	7,623	$68	$518K
2026-05-28	S	Leproust Emily M.	Chief Executive Officer, Director	900	$67	$60K
2026-05-28	S	Starovasnik Melissa A.	Director	2,500	$68	$170K
2026-05-28	S	Leproust Emily M.	Chief Executive Officer, Director	1,482	$65	$97K

Why TWST filings on EdgarKit beat the alternatives

Real-time, not batched. Yahoo Finance and most aggregators batch the SEC daily index. EdgarKit polls EDGAR every 30 seconds, so new TWST filings appear here within a minute of SEC acceptance.
Developer-ready JSON. Whalewisdom and OpenInsider give you HTML tables you can read but not parse cleanly. Every transaction shown above is also available as structured JSON via the API.
Full transaction codes. Yahoo collapses Form 4 lines into 'Buy' / 'Sell'. We keep the raw transaction code (P, S, A, M, F, etc.) so you can filter compensation noise out of trading signal.
Footnote text preserved. Rule 10b5-1 plan references, indirect ownership disclosures, and gift transfers are all retained in the API response, not stripped.
Free tier covers it. 1,000 API calls/month, no credit card. Most ticker-specific workflows fit comfortably in free.

What insider trading data covers for TWST

Twist Bioscience Corporation (CIK 1581280) reports Section 16 insider transactions on Form 4 within two business days. Each filing carries the transaction date, transaction code (P for open-market purchase, S for sale, M for option exercise, F for tax withholding), shares, price, and post-transaction holdings. Optional footnotes disclose Rule 10b5-1 plan references and indirect ownership relationships.

How to interpret TWST insider activity

Treat each filing line through three filters: the transaction code, the role of the filer (officer carries more signal than director), and the dollar value relative to the company's market cap. Open-market purchases (P) by C-suite officers carry the strongest bullish signal. Sales (S) referencing a Rule 10b5-1 plan in the footnotes are pre-arranged and should be discounted. See how to read a Form 4 for the full walkthrough.

Get TWST insider data via API

Pull recent TWST Form 4 filings, filtered to open-market purchases above $100k:

curl "https://api.edgarkit.com/v1/filings?ticker=TWST&form_type=4&transaction_code=P&min_value=100000&limit=20" \
  -H "Authorization: Bearer YOUR_API_KEY"

Subscribe via webhook to receive every new TWST Form 4 in real time:

curl -X POST "https://api.edgarkit.com/v1/webhooks" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "url": "https://your-server.com/edgarkit-events",
    "filters": {"form_types": ["4"], "tickers": ["TWST"]}
  }'

Cluster buying detection for TWST

The strongest insider signal at the issuer level is cluster buying: three or more distinct insiders placing open-market purchases within a 7-14 day window. For the complete pattern detector, see how to detect insider cluster buying.