Mason David W — SEC Form 4 filings
SEC reporting owner CIK 1744907. 17 Form 4 filings on record with FilingPulse; latest filed 2026-04-28.
Transaction summary — filings shown
Covers all 17 filings on record, filed 2024-02-06 to 2026-04-28. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 8 legs across 8 filings — 122,555 shares, $1,454,729 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 12.
- Largest priced transaction: sale of 97,372 shares @ $11.93 ($1,161,648) in SEMrush Holdings, Inc., filed 2026-03-09.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| SEMrush Holdings, Inc. (SEMR) | Chief Legal Officer | 17 | — | 8 legs · 122,555 sh · $1,454,729 | 12 |
Form 4 filings — Mason David W
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-04-28 | 4 | SEMrush Holdings, Inc. (SEMR) | Disposition to issuer (D): 271,248 @ $12 · Disposition to issuer (D): 144,717 (derivative) | EDGAR |
| 2026-03-09 | 4 | SEMrush Holdings, Inc. (SEMR) | Sale (S): 97,372 @ $11.93 | EDGAR |
| 2025-12-17 | 4 | SEMrush Holdings, Inc. (SEMR) | Grant/award (A): 143,338 @ $0 · Tax withholding (F): 26,054 @ $11.86 | EDGAR |
| 2025-12-02 | 4 | SEMrush Holdings, Inc. (SEMR) | Tax withholding (F): 3,592 @ $11.83 | EDGAR |
| 2025-11-03 | 4 | SEMrush Holdings, Inc. (SEMR) | Tax withholding (F): 2,537 @ $7.26 | EDGAR |
| 2025-09-02 | 4 | SEMrush Holdings, Inc. (SEMR) | Tax withholding (F): 2,486 @ $7.90 | EDGAR |
| 2025-08-04 | 4 | SEMrush Holdings, Inc. (SEMR) | Tax withholding (F): 1,751 @ $8.49 | EDGAR |
| 2025-06-04 | 4 | SEMrush Holdings, Inc. (SEMR) | Sale (S): 7,500 @ $10.03 | EDGAR |
| 2025-06-02 | 4 | SEMrush Holdings, Inc. (SEMR) | Tax withholding (F): 2,181 @ $9.84 | EDGAR |
| 2025-05-02 | 4 | SEMrush Holdings, Inc. (SEMR) | Tax withholding (F): 1,541 @ $10.38 | EDGAR |
| 2025-03-05 | 4 | SEMrush Holdings, Inc. (SEMR) | Grant/award (A): 123,636 @ $0 · Sale (S): 9,127 @ $11.14 | EDGAR |
| 2025-02-04 | 4 | SEMrush Holdings, Inc. (SEMR) | Sale (S): 1,875 @ $17.15 | EDGAR |
| 2024-11-05 | 4 | SEMrush Holdings, Inc. (SEMR) | Sale (S): 1,589 @ $13.14 | EDGAR |
| 2024-08-06 | 4 | SEMrush Holdings, Inc. (SEMR) | Sale (S): 1,667 @ $13.47 | EDGAR |
| 2024-05-03 | 4 | SEMrush Holdings, Inc. (SEMR) | Sale (S): 1,549 @ $12.62 | EDGAR |
| 2024-03-05 | 4 | SEMrush Holdings, Inc. (SEMR) | Grant/award (A): 89,171 @ $0 | EDGAR |
| 2024-02-06 | 4 | SEMrush Holdings, Inc. (SEMR) | Sale (S): 1,876 @ $11.27 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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