Mosbrooker Eric — SEC Form 4 filings
SEC reporting owner CIK 1715283. 6 Form 4 filings on record with FilingPulse; latest filed 2026-02-27.
Transaction summary — filings shown
Covers all 6 filings on record, filed 2025-01-08 to 2026-02-27. 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): 4 legs across 3 filings — 143,932 shares, $6,370,403 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 14.
- Largest priced transaction: sale of 124,687 shares @ $44.06 ($5,494,033) in Avidity Biosciences, Inc., filed 2025-08-08.
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 |
|---|---|---|---|---|---|
| Avidity Biosciences, Inc. (RNAM) | Chief Commercial Officer | 6 | — | 4 legs · 143,932 sh · $6,370,403 | 14 |
Form 4 filings — Mosbrooker Eric
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-02-27 | 4 | Avidity Biosciences, Inc. (RNAM) | Disposition to issuer (D): 79,413 · Disposition to issuer (D): 177,188 (derivative) · Disposition to issuer (D): 50,000 (derivative) | EDGAR |
| 2025-12-19 | 4 | Avidity Biosciences, Inc. (RNA) | Grant/award (A): 72,000 @ $0 · Tax withholding (F): 36,564 @ $71.87 · Tax withholding (F): 11,426 @ $71.87 | EDGAR |
| 2025-10-07 | 4 | Avidity Biosciences, Inc. (RNA) | Option exercise (M): 6,562 @ $9.05 · Sale (S): 6,562 @ $45.38 · Option exercise (M): 6,562 (derivative) @ $0 | EDGAR |
| 2025-09-05 | 4 | Avidity Biosciences, Inc. (RNA) | Option exercise (M): 6,563 @ $9.05 · Sale (S): 6,563 @ $47.07 · Option exercise (M): 6,563 (derivative) @ $0 | EDGAR |
| 2025-08-08 | 4 | Avidity Biosciences, Inc. (RNA) | Option exercise (M): 124,687 @ $9.05 · Sale (S): 124,687 @ $44.06 · Sale (S): 6,120 @ $44.06 · Option exercise (M): 124,687 (derivative) @ $0 | EDGAR |
| 2025-01-08 | 4 | Avidity Biosciences, Inc. (RNA) | Grant/award (A): 25,000 @ $0 · Grant/award (A): 50,000 (derivative) @ $0 | 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.
Need this as JSON?
GET https://api.filingpulse.io/v1/insider-trades?owner_cik=1715283 returns every filing on this page — normalized, with footnotes and derivative legs — and webhooks push new filings to you in seconds. API docs →