Massivemarkets

SEC Form 4

Natera, Inc. (NTRA) insider trading

In the 12 months to Oct 26, 2026, 11 NTRA insiders reported open-market sales of $331.3M across 76 filings; no open-market purchases were filed.

Latest filing · Last 12 months · Source: SEC EDGAR · How we count

Open-market sales
$331.3M
76 filings · 11 insiders
Open-market purchases
$0
0 filings
Pre-arranged sales (10b5-1)
70 of 76
$280.8M of $331.3M sold (85%)

Who traded NTRA, and when

  • Sale
  • Sale, pre-arranged (10b5-1)

NTRA daily close from Oct 27, 2025 to Oct 26, 2026, between $182.65 and $425.64, last $403.99. 76 sale and 0 purchase filings by 11 insiders, marked at their filing dates. Matthew Rabinowitz, EXECUTIVE CHAIRMAN: sold $140.0M across 9 filings, first filed Nov 3, 2025, last Oct 16, 2026. Steven Leonard Chapman, CEO AND PRESIDENT: sold $65.2M across 9 filings, first filed Nov 3, 2025, last Oct 2, 2026. Roelof Botha, Director: sold $34.9M across 2 filings, first filed Nov 26, 2025, last Jun 3, 2026. Jonathan Sheena, Director: sold $29.6M across 22 filings, first filed Nov 4, 2025, last Oct 23, 2026. Daniel Rabinowitz, SEC. AND CHIEF LEGAL OFFICER: sold $16.4M across 4 filings, first filed Mar 10, 2026, last Jul 6, 2026. Herm Rosenman, Director: sold $15.1M across 2 filings, first filed Dec 16, 2025, last Jun 26, 2026. 5 others: sold $30.1M across 28 filings, first filed Oct 29, 2025, last Oct 2, 2026.

Largest mark · tap a row for others

Matthew Rabinowitz · EXECUTIVE CHAIRMAN

Filing 1 of 2 within a week · $51,195,538 total

Sale $16,398,267

50,000 shares at $327.97 avg

Filed Sep 11, 2026

Pre-arranged (10b5-1) · close on filing date $328.93

NTRA daily closelast $403.99

Matthew Rabinowitz · EXECUTIVE CHAIRMAN

$140.0M sold

Steven Leonard Chapman · CEO AND PRESIDENT

$65.2M sold

Roelof Botha · Director

$34.9M sold

Jonathan Sheena · Director

$29.6M sold

Daniel Rabinowitz · SEC. AND CHIEF LEGAL OFFICER

$16.4M sold

Herm Rosenman · Director

$15.1M sold

5 others

$30.1M sold
One row per insider, smaller filers combined; marks sit at the SEC filing date, sized by dollar value.

Open-market trades

76 filings in the last 12 months
Other insider activity (not market trades) · 190 records
  • Option exercises25 records
  • Tax withholding1 record
  • Tax withholding (sold to cover)96 records
  • Grants and awards63 records
  • Gifts5 records

Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.

How to read this page

Open-market purchase or sale
A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
Pre-arranged (10b5-1)
The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
Filing date
Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.

Frequently asked questions

Has Natera, Inc.'s CEO sold stock?

Yes. Steven Leonard Chapman (CEO) sold 304,189 shares ($65.2M) between Nov 2025 and Oct 2026, all under a pre-arranged 10b5-1 plan.

How current is NTRA’s insider data?

These are NTRA Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.

What counts as an open-market buy or sell?

Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.

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Track NTRA insider trades with your agent

This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:

Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for NTRA every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.

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