InsiderEXECUTIVE CHAIRMAN
Matthew Rabinowitz Insider Trading Activity
Every SEC Form 4 transaction reported by Matthew Rabinowitz, sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Is Matthew Rabinowitz buying or selling?
Matthew Rabinowitz reported 1 open-market buys ($6.3M) and 59 sells ($280.3M) across 60 Form 4 filings at 1 company — a net selling position of $274.0M.
Source: SEC EDGAR Form 4
What stands out
- All 60 of Matthew Rabinowitz's Form 4 filings are for one company, Natera, Inc. (NTRA).
- The most recent Form 4 was accepted on Oct 17, 2026 (2 days ago).
- In the last 12 months: no open-market purchases and 11 sales ($136.2M).
- The largest open-market sale in the last 12 months was $38.3M of Natera, Inc. (NTRA) on Mar 17, 2026. SEC ↗
Key Statistics (as of Oct 17, 2026)
Total Form 4 filings
60
SEC EDGAR
Companies
1
Buys (1)
$6.3M
Sells (59)
$280.3M
Insider sentiment
Net sellingNet insider flow of $274.0M in net selling, filed between Sep 13, 2018 – Oct 17, 2026.
Companies Matthew Rabinowitz files for
| # | Company | Form 4 filings |
|---|---|---|
| 1 | NTRANatera, Inc. | 60 |
Recent Matthew Rabinowitz transactions
| Date | Ticker | Role | Type | Shares | Value | Filing |
|---|---|---|---|---|---|---|
| Oct 17, 2026 | NTRA | EXECUTIVE CHAIRMAN | Sale | 50.0K | $20.1M | SEC ↗ |
| Sep 17, 2026 | NTRA | EXECUTIVE CHAIRMAN | Sale | 102.0K | $34.8M | SEC ↗ |
| Sep 12, 2026 | NTRA | EXECUTIVE CHAIRMAN | Sale | 50.0K | $16.4M | SEC ↗ |
| Aug 8, 2026 | NTRA | EXECUTIVE CHAIRMAN | Sale | 2.0K | $641.8K | SEC ↗ |
| Aug 6, 2026 | NTRA | EXECUTIVE CHAIRMAN | Sale | 731 | $195.9K | SEC ↗ |
| Jul 30, 2026 | NTRA | EXECUTIVE CHAIRMAN | Sale | 1.7K | $447.5K | SEC ↗ |
| Jul 9, 2026 | NTRA | EXECUTIVE CHAIRMAN | Sale | 1.0K | $280.0K | SEC ↗ |
| Jun 17, 2026 | NTRA | EXECUTIVE CHAIRMAN | Sale | 100.0K | $21.4M | SEC ↗ |
| May 7, 2026 | NTRA | EXECUTIVE CHAIRMAN | Sale | 7.7K | $1.6M | SEC ↗ |
| Mar 17, 2026 | NTRA | EXECUTIVE CHAIRMAN | Sale | 200.0K | $38.3M | SEC ↗ |
| Oct 23, 2025 | NTRA | EXECUTIVE CHAIRMAN | Sale | 10.0K | $1.9M | SEC ↗ |
| Sep 20, 2025 | NTRA | EXECUTIVE CHAIRMAN | Sale | 50.0K | $9.0M | SEC ↗ |
| Sep 17, 2025 | NTRA | EXECUTIVE CHAIRMAN | Sale | 5.0K | $852.7K | SEC ↗ |
| Jul 31, 2025 | NTRA | EXECUTIVE CHAIRMAN | Sale | 1.7K | $240.2K | SEC ↗ |
| Jun 21, 2025 | NTRA | EXECUTIVE CHAIRMAN | Sale | 54.0K | $8.4M | SEC ↗ |
| May 1, 2025 | NTRA | EXECUTIVE CHAIRMAN | Sale | 1.7K | $261.4K | SEC ↗ |
| Mar 20, 2025 | NTRA | EXECUTIVE CHAIRMAN | Sale | 1.1K | $164.6K | SEC ↗ |
| Mar 15, 2025 | NTRA | EXECUTIVE CHAIRMAN | Sale | 50.0K | $7.4M | SEC ↗ |
| Feb 1, 2025 | NTRA | EXECUTIVE CHAIRMAN | Sale | 6.0K | $995.7K | SEC ↗ |
| Dec 14, 2024 | NTRA | EXECUTIVE CHAIRMAN | Sale | 160.0K | $26.5M | SEC ↗ |
| Nov 28, 2024 | NTRA | EXECUTIVE CHAIRMAN | Sale | 4.0K | $665.4K | SEC ↗ |
| Mar 8, 2024 | NTRA | EXECUTIVE CHAIRMAN | Sale | 191.0K | $16.7M | SEC ↗ |
| Mar 25, 2023 | NTRA | EXECUTIVE CHAIRMAN | Sale | 2.6K | $146.6K | SEC ↗ |
| Jan 5, 2023 | NTRA | EXECUTIVE CHAIRMAN | Sale | 2.7K | $107.0K | SEC ↗ |
| May 16, 2022 | NTRA | EXECUTIVE CHAIRMAN | Purchase | 219.8K | $6.3M | SEC ↗ |
Showing the 25 most recent filings of 60. Screen every filing.
Matthew Rabinowitz insider trading FAQ
Is Matthew Rabinowitz buying or selling?
Across 60 SEC Form 4 filings, Matthew Rabinowitz reported 1 open-market purchases totaling $6.3M and 59 sales totaling $280.3M — a net selling position of $274.0M.
Which companies does Matthew Rabinowitz file Form 4s for?
Matthew Rabinowitz has reported insider transactions at 1 company, most often Natera, Inc. (NTRA).
How far back does Matthew Rabinowitz's filing history go?
Trabud holds Matthew Rabinowitz's SEC Form 4 filings from Sep 13, 2018 – Oct 17, 2026, sourced directly from SEC EDGAR.
Where does Trabud get Matthew Rabinowitz's insider trading data?
Directly from SEC EDGAR Form 4 filings. Every transaction on this page is a real filing accepted by the SEC, updated as new filings arrive.
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