Brumm Joshua T
- SEC CIK
- 0001528826
In the past year, 2 open-market sale filings worth $920.8K and no purchases.
Current role at each company
- CBIO Crescent Biopharma, Inc.Chief Executive Officeras of Sep 18, 2026
- DYN Dyne Therapeutics, Inc.CEO & Presidentas of Mar 12, 2024
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- –
- 0 filings
- Sold
- $920.8K
- 2 filings
- Net
- −$920.8K
- Bought minus sold
- Companies
- 1
- With open-market trades
Trades
Every Form 4 that lists Brumm Joshua T as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
CBIO Crescent Biopharma, Inc.
Chief Executive Officer2 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jun 23, 2026 (view filing) | Jun 22 | 1 day | Brumm Joshua TChief Executive Officer | SSale | −42.3K | $17.99 | −$761.1K | −13.1%281.2K after | 10b5-1 |
| Sep 18, 2026 (view filing)4:02 PM ET | Sep 16-18 | 2 days | Brumm Joshua TChief Executive Officer | SSale | −9.45K | $16.91 | −$159.8K | −3.4%271.8K after | 2 lots10b5-1 |
DYN Dyne Therapeutics, Inc.
CEO & President13 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 22, 2021 (view filing) | Sep 20-21 | 2 days | Brumm Joshua TSee Remarks | SSale | −8.01K | $15.90 | −$127.3K | −7.5%99.0K after | 2 lots |
| Mar 14, 2022 (view filing) | Mar 11 | 3 days | Brumm Joshua TSee Remarks | SSale | −3.38K | $8.73 | −$29.5K | −1.6%210.3K after | |
| Oct 11, 2022 (view filing) | Oct 7-10 | 4 days | Brumm Joshua TSee Remarks | SSale | −210.0K | $12.52 | −$2.63M | −50.6%204.6K after | 2 lots |
| Dec 13, 2022 (view filing) | Dec 12 | 1 day | Brumm Joshua TSee Remarks | SSale | −3.32K | $10.87 | −$36.1K | −1.0%329.8K after | |
| Mar 15, 2023 (view filing) | Mar 14 | 1 day | Brumm Joshua TSee Remarks | SSale | −7.32K | $13.33 | −$97.5K | −2.2%322.5K after | |
| Jun 12, 2023 (view filing) | Jun 8-12 | 4 days | Brumm Joshua TSee Remarks | SSale | −325.3K | $12.90 | −$4.20M | −56.2%253.4K after | 4 lots |
| Sep 13, 2023 (view filing) | Sep 12 | 1 day | Brumm Joshua TSee Remarks | SSale | −7.67K | $10.41 | −$79.9K | −3.0%245.7K after | |
| Sep 20, 2023 (view filing) | Sep 18 | 2 days | Brumm Joshua TSee Remarks | SSale | −12.0K | $9.41 | −$113.2K | −4.9%233.7K after | |
| Dec 12, 2023 (view filing) | Dec 11 | 1 day | Brumm Joshua TSee Remarks | SSale | −7.58K | $10.72 | −$81.3K | −1.3%585.0K after | |
| Jan 4, 2024 (view filing) | Jan 3-4 | 1 day | Brumm Joshua TCEO & President | SSale | −269.7K | $18.66 | −$5.03M | −31.6%585.0K after | 5 lots10b5-1 |