Brumm Joshua T — SEC Form 4 filings
SEC reporting owner CIK 1528826. 8 Form 4 filings on record with FilingPulse; latest filed 2026-09-18.
Transaction summary — filings shown
Covers all 8 filings on record, filed 2024-01-31 to 2026-09-18. 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): 15 legs across 5 filings — 590,568 shares, $15,177,010 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 17.
- Largest priced transaction: sale of 202,238 shares @ $25.30 ($5,116,621) in Dyne Therapeutics, Inc., filed 2024-03-12.
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 |
|---|---|---|---|---|---|
| Dyne Therapeutics, Inc. (DYN) | CEO & President, Director | 4 | — | 12 legs · 538,816 sh · $14,256,168 | 13 |
| CRESCENT BIOPHARMA, INC. (CBIO) | Chief Executive Officer, Director | 4 | — | 3 legs · 51,752 sh · $920,842 | 4 |
Form 4 filings — Brumm Joshua T
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-18 | 4 | CRESCENT BIOPHARMA, INC. (CBIO) | Sale (S): 1,610 @ $17.90 · Sale (S): 7,837 @ $16.71 | EDGAR |
| 2026-06-23 | 4 | CRESCENT BIOPHARMA, INC. (CBIO) | Sale (S): 42,305 @ $17.99 | EDGAR |
| 2025-12-17 | 4 | CRESCENT BIOPHARMA, INC. (CBIO) | Grant/award (A): 45,117 · Grant/award (A): 10,000 · Grant/award (A): 180,467 (derivative) @ $0 | EDGAR |
| 2025-12-10 | 4 | CRESCENT BIOPHARMA, INC. (CBIO) | Grant/award (A): 345,672 (derivative) @ $0 | EDGAR |
| 2024-03-12 | 4 | Dyne Therapeutics, Inc. (DYN) | Option exercise (M): 153,931 @ $5.54 · Option exercise (M): 209,412 @ $5.54 · Sale (S): 202,238 @ $25.30 · Sale (S): 160,670 @ $26.72 · Sale (S): 435 @ $27.38 · Option exercise (M): 50,000 @ $5.54 · +7 more | EDGAR |
| 2024-03-11 | 4 | Dyne Therapeutics, Inc. (DYN) | Sale (S): 9,086 @ $25.85 | EDGAR |
| 2024-03-01 | 4 | Dyne Therapeutics, Inc. (DYN) | Option exercise (M): 5,520 @ $5.54 · Sale (S): 5,520 @ $27.50 · Option exercise (M): 94,480 @ $5.54 · Sale (S): 18,976 @ $28.25 · Sale (S): 74,090 @ $29.23 · Sale (S): 1,414 @ $29.70 · +3 more | EDGAR |
| 2024-01-31 | 4 | Dyne Therapeutics, Inc. (DYN) | Gift (G): 20,000 @ $0 · Gift (G): 1,500 @ $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.
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