Insiders / Mason David W
Mason David W
CIK 1744907personinsider
Companies
1
First seen
Mar 9, 2026
Last activity
Mar 9, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| SEMrush Holdings, Inc. · SEMR | 271,248 | — |
All securities held
1 position · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| SEMrush Holdings, Inc. | Class A Common Stock | 271,248 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Mar 5, 2026 | Sell | SEMR SEMrush Holdings, Inc. Class A Common Stock | $1.16M | -97K -26.42% | 271,248 0.18% of shares | medium |