Marcus Gail Boxer Insider Trading Activity
Marcus Gail Boxer has been net-selling over the last 12 months with 0 purchases and 7 sales across 1 company.
NTRA is the most-traded position with 7 trades. The largest single transaction was a sale of NTRA for $559K on Jun 10, 2025.
Performance Scorecard
Forward stock performance after each transaction by Marcus Gail Boxer. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | — | -4.6% | 57% | 7 |
| 90 days | — | -15.0% | 29% | 7 |
| 120 days | — | -27.9% | 0% | 7 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersNTRA · Natera, Inc.
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | ROLE |
|---|---|---|---|---|---|---|
| Nov 3, 2025 | NTRA | Sell | 122 | $198.71 | $24K | Director |
| Aug 1, 2025 | NTRA | Sell | 1,313 | $132.73 | $174K | Director |
| Aug 1, 2025 | NTRA | Sell | 1,183 | $133.66 | $158K | Director |
| Jul 1, 2025 | NTRA | Sell | 1,648 | $167.05 | $275K | Director |
| Jul 1, 2025 | NTRA | Sell | 2,651 | $167.56 | $444K | Director |
| Jun 10, 2025 | NTRA | Sell | 3,400 | $164.33 | $559K | Director |
| Jun 10, 2025 | NTRA | Sell | 600 | $165.04 | $99K | Director |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| NTRA | Natera, Inc. | 7 | $1.7M |
Other insiders at Natera, Inc.
10 other tracked filers at NTRA.
Director
115
Trades
President
61
Trades
CEO
48
Trades
EXECUTIVE CHAIRMAN
45
Trades
CFO
44
Trades
SEC. AND CHIEF LEGAL OFFICER
28
Trades
President
18
Trades
Director
11
Trades
Director
8
Trades
Director
4
Trades