Updated Jul 16, 2026
Mason David W has filed 1 SEC Form 4 filing across 1 company in the last 90 days — selling. Lifetime open-market sales: $1.18M.
David W. Mason serves as the General Counsel and Chief Legal Officer at SEMrush Holdings, Inc., where he oversees legal matters for the company. He has been involved in multiple SEC filings related to his role.
| Role | Chief Legal Officer |
|---|---|
| Notability | 20/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-04-29 | SEMR | SEMrush Holdings, Inc. | D — Derivative transaction | 271.2K | $12.00 | $3.25M |
| 2026-03-09 | SEMR | SEMrush Holdings, Inc. | S — Open-market sale | 97.4K | $11.93 | $1.16M |
| 2025-09-01 | SEMR | SEMrush Holdings, Inc. | F — Tax withholding / forfeiture | 2.5K | $7.90 | $20K |
| 2025-08-01 | SEMR | SEMrush Holdings, Inc. | F — Tax withholding / forfeiture | 1.8K | $8.49 | $15K |
| 2024-11-05 | SEMR | SEMrush Holdings, Inc. | S — Open-market sale | 1.6K | $13.14 | $21K |
David W. Mason serves as the General Counsel and Chief Legal Officer at SEMrush Holdings, Inc., where he oversees legal matters for the company. He has been involved in multiple SEC filings related to his role.…
1 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases () and 2 open-market sales ($1.18M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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