Net shares · 365d
-97.4K
0 buy · 97.4K sell
Net value · 365d
-$1.2M
$0 in · $1.2M out
Sentiment · 365d
Net selling
0% buying · 100% selling
Open-market trades · 365d
1
0 buy · 97.4K sell
Trading track record · all companies
Not enough open-market trades to chart a track record yet.
Running net of open-market buys − sells across every company. Tap the line or a marker for details. ▲ buy · ▼ sell.
Transactions · 365d
-
SEMR Other·D
Chief Legal Officer
—
144.7K sh
Own -100%
-
SEMR Other·D
Chief Legal Officer
$3.3M
271.2K sh · $12.00
Own -100%
-
SEMR Sell·S
Chief Legal Officer
$1.2M
97.4K sh · $11.93
Own -26%
-
SEMR Grant·A
Chief Legal Officer
$0
143.3K sh
Own +57%
-
SEMR Other·F
Chief Legal Officer
$309.0K
26.1K sh · $11.86
Own -7%
-
SEMR Other·F
Chief Legal Officer
$42.5K
3.6K sh · $11.83
Own -1%
-
SEMR Other·F
Chief Legal Officer
$18.4K
2.5K sh · $7.26
Own -1%
-
SEMR Other·F
Chief Legal Officer
$19.6K
2.5K sh · $7.90
Own -1%
-
SEMR Other·F
Chief Legal Officer
$14.9K
1.8K sh · $8.49
Own -1%
| Date▾ | Ticker | Type | Shares | Value |
|---|---|---|---|---|
| Apr 28, 2026 | SEMR | Other D | 144.7K | — |
| Apr 28, 2026 | SEMR | Other D | 271.2K | $3.3M |
| Mar 5, 2026 | SEMR | Sell S | 97.4K | $1.2M |
| Dec 15, 2025 | SEMR | Grant A | 143.3K | $0 |
| Dec 15, 2025 | SEMR | Other F | 26.1K | $309.0K |
| Dec 1, 2025 | SEMR | Other F | 3.6K | $42.5K |
| Nov 1, 2025 | SEMR | Other F | 2.5K | $18.4K |
| Sep 1, 2025 | SEMR | Other F | 2.5K | $19.6K |
| Aug 1, 2025 | SEMR | Other F | 1.8K | $14.9K |
Buy Sell Non-market (grant · exercise · gift)
About Mason David W
This profile aggregates every SEC Form 4 insider transaction reported by Mason David W across all companies they trade. Open-market purchases (code P) and sales (code S) are the highest-signal, discretionary trades; grants (A), option exercises (M) and gifts (G) reflect compensation rather than conviction and carry no market price. Figures cover the selected period and update as new filings are ingested.