InsiderTrades

Brumm Joshua T

SEC CIK 1528826 · EDGAR

Buying vs selling by month open-market trades, last 60 months, all 2 companies
BoughtSold

Companies

TickerCompanyTitleHoldingBoughtSoldTradesFirstLast
CBIOCRESCENT BIOPHARMA, INC.CEO, Dir 271.8K — $920.8K 32025-12-152026-09-16
DYNDyne Therapeutics, Inc.See Remarks, Dir 604.4K — $26.68M 302021-09-202024-03-08

Most active insiders at CBIO, 12 months

#InsiderTitleBoughtSold
1 Harwin Peter EvanDir, 10% $18.24M—
2 Fairmount Funds Management LLCDir, 10% $12.38M—
3 Brumm Joshua TCEO, Dir —$920.8K
4 McNeill JonathanPres, COO —$446.9K
5 Pinkas JanCSO —$34.9K
6 Im Ellie EunkyungChief Medical Off —$33.1K
7 Bispham Barbara HarlinSee Remarks —$33.0K
8 Scalzo Richard WilliamCFO —$30.2K
9 Lynch RyanSee Remarks —$12.7K
10 Doughty Christopher GrantChief Business Off ——

Transactions 33

Type
Reset
X Filed Traded Ticker Company Insider Title Type Price Qty Owned ΔOwn Value
MT 2026-09-18 16:02 2026-09-16+ CBIO CRESCENT BIOPHARMA, INC. Brumm Joshua T CEO, Dir S - Sale $16.91 -9,447 271.8K -3% -$159.8K
T 2026-06-23 16:01 2026-06-22 CBIO CRESCENT BIOPHARMA, INC. Brumm Joshua T CEO, Dir S - Sale $17.99 -42.3K 281.2K -13% -$761.1K
DM 2025-12-17 2025-12-15 CBIO CRESCENT BIOPHARMA, INC. Brumm Joshua T CEO, Dir A - Grant — +55.1K 323.5K +21% —
DMT 2024-03-12 2024-03-08+ DYN Dyne Therapeutics, Inc. Brumm Joshua T CEO, Pres, Dir M - OptEx $5.54 +413.3K 604.4K +216% +$2.29M
DMT 2024-03-12 2024-03-08+ DYN Dyne Therapeutics, Inc. Brumm Joshua T CEO, Pres, Dir S - Sale+OE $25.89 -429.7K 554.4K -44% -$11.13M
T 2024-03-11 2024-03-07 DYN Dyne Therapeutics, Inc. Brumm Joshua T CEO, Pres, Dir S - Sale $25.85 -9,086 554.4K -2% -$234.9K
DMT 2024-03-01 2024-02-29+ DYN Dyne Therapeutics, Inc. Brumm Joshua T CEO, Pres, Dir S - Sale+OE $28.96 -100.0K 563.5K -15% -$2.90M
DMT 2024-03-01 2024-02-29+ DYN Dyne Therapeutics, Inc. Brumm Joshua T CEO, Pres, Dir M - OptEx $5.54 +100.0K 569.0K +21% +$554.0K
M 2024-01-31 2024-01-29 DYN Dyne Therapeutics, Inc. Brumm Joshua T CEO, Pres, Dir G - Gift $0.00 -21.5K 563.5K -4% $0
DMT 2024-01-04 2024-01-03+ DYN Dyne Therapeutics, Inc. Brumm Joshua T CEO, Pres M - OptEx $4.37 +269.7K 803.5K +51% +$1.18M
DMT 2024-01-04 2024-01-03+ DYN Dyne Therapeutics, Inc. Brumm Joshua T CEO, Pres S - Sale+OE $18.66 -269.7K 585.0K -32% -$5.03M
2023-12-12 2023-12-11 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir S - Sale $10.72 -7,585 585.0K -1% -$81.3K
D 2023-11-16 2023-11-15 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir A - Grant $0.00 +358.9K 592.6K +154% $0
2023-09-20 2023-09-18 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir S - Sale $9.41 -12.0K 233.7K -5% -$113.2K
2023-09-13 2023-09-12 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir S - Sale $10.41 -7,672 245.7K -3% -$79.9K
DM 2023-06-12 2023-06-08 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir G - Gift $0.00 -21.8K 302.5K -7% $0
DM 2023-06-12 2023-06-08+ DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir M - OptEx $1.03 +278.0K 441.1K +170% +$286.4K
DM 2023-06-12 2023-06-08+ DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir S - Sale+OE $12.90 -325.3K 269.8K -55% -$4.20M
2023-03-15 2023-03-14 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir S - Sale $13.33 -7,318 322.5K -2% -$97.5K
D 2022-12-13 2022-12-12 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir S - Sale $10.87 -3,322 329.8K -1.0% -$36.1K
D 2022-12-13 2022-12-09 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir A - Grant $0.00 +144.0K 333.1K +76% $0
DM 2022-10-11 2022-10-10 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir G - Gift $0.00 -15.5K 191.6K -7% $0
DM 2022-10-11 2022-10-07+ DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir S - Sale+OE $12.52 -210.0K 204.6K -51% -$2.63M
DM 2022-10-11 2022-10-07+ DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir M - OptEx $1.03 +210.0K 218.8K +2,380% +$216.3K
2022-09-21 2022-09-20 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir D - Sale to Iss $13.70 -11.8K 204.6K -5% -$162.2K
2022-09-15 2022-09-15 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir D - Sale to Iss $14.05 -3,480 216.5K -2% -$48.9K
D 2022-07-06 2022-07-06 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir D - Sale to Iss $8.24 -11.0K 219.9K -5% -$90.3K
D 2022-07-06 2022-07-05 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir A - Grant $0.00 +24.1K 230.9K +12% $0
2022-06-15 2022-06-14 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir D - Sale to Iss $4.95 -3,540 206.8K -2% -$17.5K
2022-03-14 2022-03-11 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir S - Sale $8.73 -3,384 210.3K -2% -$29.5K
D 2021-12-14 2021-12-10 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir A - Grant $0.00 +118.2K 213.7K +124% $0
2021-10-04 2021-10-01 DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir G - Gift $0.00 -3,500 95.5K -4% $0
M 2021-09-22 2021-09-20+ DYN Dyne Therapeutics, Inc. Brumm Joshua T See Remarks, Dir S - Sale $15.90 -8,009 99.0K -7% -$127.3K

Purchase Sale Sale after option exercise All abbreviations