Michael Burkes Brophy Insider Trading Activity
Every SEC Form 4 transaction reported by Michael Burkes Brophy, sourced directly from SEC EDGAR and updated as new filings are accepted.
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 Michael Burkes Brophy buying or selling?
Michael Burkes Brophy reported 0 open-market buys ($0) and 132 sells ($83.3M) across 132 Form 4 filings at 1 company — a net selling position of $83.3M.
Source: SEC EDGAR Form 4
What stands out
- All 132 of Michael Burkes Brophy's Form 4 filings are for one company, Natera, Inc. (NTRA).
- The most recent Form 4 was accepted on Aug 6, 2026 (2 months ago).
- In the last 12 months: no open-market purchases and 11 sales ($21.7M).
- The largest open-market sale in the last 12 months was $14.6M of Natera, Inc. (NTRA) on Jan 23, 2026. SEC ↗
Key Statistics (as of Aug 6, 2026)
Insider sentiment
Net sellingNet insider flow of $83.3M in net selling, filed between Mar 28, 2018 – Aug 6, 2026.
Companies Michael Burkes Brophy files for
| # | Company | Form 4 filings |
|---|---|---|
| 1 | NTRANatera, Inc. | 132 |
Recent Michael Burkes Brophy transactions
| Date | Ticker | Role | Type | Shares | Value | Filing |
|---|---|---|---|---|---|---|
| Aug 6, 2026 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 795 | $216.0K | SEC ↗ |
| Jul 30, 2026 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 5.1K | $1.3M | SEC ↗ |
| May 6, 2026 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 795 | $166.0K | SEC ↗ |
| Apr 30, 2026 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 5.1K | $1.0M | SEC ↗ |
| Mar 12, 2026 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 785 | $160.2K | SEC ↗ |
| Feb 5, 2026 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 6.9K | $1.6M | SEC ↗ |
| Jan 30, 2026 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 5.1K | $1.2M | SEC ↗ |
| Jan 23, 2026 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 61.1K | $14.6M | SEC ↗ |
| Oct 30, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 5.1K | $967.8K | SEC ↗ |
| Oct 25, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 2.2K | $413.0K | SEC ↗ |
| Oct 23, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 602 | $113.1K | SEC ↗ |
| Oct 2, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 2.5K | $403.7K | SEC ↗ |
| Jul 31, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 5.1K | $700.7K | SEC ↗ |
| Jul 25, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 2.2K | $303.7K | SEC ↗ |
| Jul 23, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 602 | $83.9K | SEC ↗ |
| May 1, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 5.1K | $776.6K | SEC ↗ |
| Apr 25, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 2.2K | $321.8K | SEC ↗ |
| Apr 23, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 610 | $88.8K | SEC ↗ |
| Apr 2, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 2.6K | $354.6K | SEC ↗ |
| Mar 20, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 792 | $115.7K | SEC ↗ |
| Feb 5, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 43.9K | $7.8M | SEC ↗ |
| Feb 1, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 6.2K | $1.1M | SEC ↗ |
| Jan 30, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 1.4K | $233.4K | SEC ↗ |
| Jan 25, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 1.4K | $247.4K | SEC ↗ |
| Jan 23, 2025 | NTRA | CHIEF FINANCIAL OFFICER | Sale | 25.9K | $4.3M | SEC ↗ |
Showing the 25 most recent filings of 132. Screen every filing.
Michael Burkes Brophy insider trading FAQ
Is Michael Burkes Brophy buying or selling?
Across 132 SEC Form 4 filings, Michael Burkes Brophy reported 0 open-market purchases totaling $0 and 132 sales totaling $83.3M — a net selling position of $83.3M.
Which companies does Michael Burkes Brophy file Form 4s for?
Michael Burkes Brophy has reported insider transactions at 1 company, most often Natera, Inc. (NTRA).
How far back does Michael Burkes Brophy's filing history go?
Trabud holds Michael Burkes Brophy's SEC Form 4 filings from Mar 28, 2018 – Aug 6, 2026, sourced directly from SEC EDGAR.
Where does Trabud get Michael Burkes Brophy'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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