Insider trades › Matthew Reade Miller
Matthew Reade Miller
A corporate insider: an officer, director or owner of more than 10% of a company. Insiders report their trades to the SEC on Form 4The form insiders use to report each purchase or sale of their company's stock. It is due within two business days of the trade. · Last filing Sep 14, 2026
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Using 13F.ai, list Matthew Reade Miller's open-market buys and sells across companies in the last two years, with the Form 4 links.
Using 13F.ai, how did the stocks Matthew Reade Miller bought perform after the purchase compared with the S&P 500?
Using 13F.ai, are other insiders at the same companies buying or selling at the same time as Matthew Reade Miller?
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Buying and selling by quarter
Dollars bought and sold on the open market over the last two years.
Bought Sold
By trade date, using the shares and price reported for each trade. Stock grants, option exercises and shares withheld for tax are left out.
Roles
The companies where this person reports as an insider, and their position at each, most recent first.
| Company | Role | Last filed |
|---|---|---|
| GRNT Granite Ridge Resources, Inc. | Director | Sep 14, 2026 |
Roles come from the filings themselves and can change over time.
Latest open-market trades
Purchases and sales at every company, most recent filing first.
| How the stock has done since the trade date, measured against the S&P 500 over the same days. It describes the stock, not the trader's actual gain or loss. | Filing | ||||||
|---|---|---|---|---|---|---|---|
| Sep 11, 2026 | GRNT Granite Ridge Resources, Inc. | Buy | 10,000 | $5.03 | $50.3K | +24.6% | Form 4 ↗ |
| Jun 12, 2026 | GRNT Granite Ridge Resources, Inc. | Buy | 696 | $4.97 | $3,459 | +26.3% | Form 4 ↗ |
| Jun 9, 2026 | GRNT Granite Ridge Resources, Inc. | Buy | 10,600 | $4.75 | $50.4K | +28.4% | Form 4 ↗ |
| May 13, 2026 | GRNT Granite Ridge Resources, Inc. | Buy | 18,180 | $5.21 | $94.7K | +20.5% | Form 4 ↗ |
| Mar 13, 2026 | GRNT Granite Ridge Resources, Inc. | Buy | 658 | $5.15 | $3,389 | +7.7% | Form 4 ↗ |
| Mar 10, 2026 | GRNT Granite Ridge Resources, Inc. | Buy | 10,000 | $5.10 | $51.0K | +14.1% | Form 4 ↗ |
| Dec 15, 2025 | GRNT Granite Ridge Resources, Inc. | Buy | 648 | $5.13 | $3,324 | +15.9% | Form 4 ↗ |
| Dec 4, 2025 | GRNT Granite Ridge Resources, Inc. | Buy | 9,388 | $5.33 | $50.0K | +8.0% | Form 4 ↗ |
| Sep 15, 2025 | GRNT Granite Ridge Resources, Inc. | Buy | 600 | $5.35 | $3,210 | +3.6% | Form 4 ↗ |
| Aug 12, 2025 | GRNT Granite Ridge Resources, Inc. | Buy | 18,700 | $5.36 | $100.2K | -0.3% | Form 4 ↗ |
| Jun 13, 2025 | GRNT Granite Ridge Resources, Inc. | Buy | 544 | $5.98 | $3,253 | -21.0% | Form 4 ↗ |
| Jun 16, 2025 | GRNT Granite Ridge Resources, Inc. | Buy | 17,000 | $5.98 | $101.7K | -20.2% | Form 4 ↗ |
| Mar 14, 2025 | GRNT Granite Ridge Resources, Inc. | Buy | 562 | $5.77 | $3,243 | -24.9% | Form 4 ↗ |
| Dec 16, 2024 | GRNT Granite Ridge Resources, Inc. | Buy | 506 | $6.03 | $3,051 | -19.8% | Form 4 ↗ |
| Dec 6, 2024 | GRNT Granite Ridge Resources, Inc. | Buy | 41,000 | $6.10 | $250.1K | -22.0% | Form 4 ↗ |
| Nov 21, 2024 | GRNT Granite Ridge Resources, Inc. | Buy | 20,327 | $6.60 | $134.2K | -31.8% | Form 4 ↗ |
| Nov 20, 2024 | GRNT Granite Ridge Resources, Inc. | Buy | 18,173 | $6.49 | $117.9K | -31.1% | Form 4 ↗ |
Each row links to its Form 4. Since trade compares the stock’s move from the close on the trade date (or the next trading day) to its latest close with the S&P 500 over the same days, adjusted for splits and excluding dividends. It describes the stock, not what the trader made: we don’t know their purchase price, position size or later sales. A dash means the trade isn’t matched to a listed stock, or there is no closing price after it yet.
When several people report on the same filing, we list it under the first one named, so trades by someone usually listed second may be missing here. Information, not investment advice: see the disclaimer.