Insider · CIK 0001528826

Brumm Joshua T

Reports to the SEC for 6 companies · WALTHAM, MA

sec.gov

Transactions

Companies

Filings

CIK

0001528826

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-09-18	CBIOCRESCENT BIOPHARMA, INC.S Sale	Director, Chief Executive Officer	SSale	−7,837 sh	$16.71	−$131K	271,765
2026-09-16	CBIOCRESCENT BIOPHARMA, INC.S Sale	Director, Chief Executive Officer	SSale	−1,610 sh	$17.90	−$28.8K	279,602
2026-06-22	CBIOCRESCENT BIOPHARMA, INC.S Sale	Director, Chief Executive Officer	SSale	−42.3K sh	$17.99	−$761K	281,212
2025-12-15	CBIOCRESCENT BIOPHARMA, INC. · Stock Option (Right to Buy)A Award	Director, Chief Executive Officer	AAward	+180K sh	—	—	180,467
2025-12-15	CBIOCRESCENT BIOPHARMA, INC.A Award	Director, Chief Executive Officer	AAward	+10K sh	—	—	323,517
2025-12-15	CBIOCRESCENT BIOPHARMA, INC.A Award	Director, Chief Executive Officer	AAward	+45.1K sh	—	—	313,517
2025-12-08	CBIOCRESCENT BIOPHARMA, INC. · Stock Option (Right to Buy)A Award	Director, Chief Executive Officer	AAward	+346K sh	—	—	345,672
2024-03-11	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−7,769 sh	$26.12	−$203K	546,616
2024-03-11	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−40.1K sh	$25.42	−$1.02M	564,313
2024-03-11	DYNDyne Therapeutics, Inc. · Stock option (right to buy)M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	−50K sh	—	—	83,269
2024-03-11	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−8,618 sh	$25.93	−$223K	537,998
2024-03-11	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−9,928 sh	$26.10	−$259K	554,385
2024-03-11	DYNDyne Therapeutics, Inc.M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	+50K sh	$5.54	+$277K	604,385
2024-03-08	DYNDyne Therapeutics, Inc.M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	+209K sh	$5.54	+$1.16M	917,728
2024-03-08	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−161K sh	$26.72	−$4.29M	554,820
2024-03-08	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−202K sh	$25.30	−$5.12M	715,490
2024-03-08	DYNDyne Therapeutics, Inc.M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	+154K sh	$5.54	+$853K	708,316
2024-03-08	DYNDyne Therapeutics, Inc. · Stock option (right to buy)M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	−154K sh	—	—	0
2024-03-08	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−435 sh	$27.38	−$11.9K	554,385
2024-03-08	DYNDyne Therapeutics, Inc. · Stock option (right to buy)M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	−209K sh	—	—	133,269
2024-03-07	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−9,086 sh	$25.85	−$235K	554,385
2024-03-01	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−1,414 sh	$29.70	−$42K	563,471
2024-03-01	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−19K sh	$28.25	−$536K	638,975
2024-03-01	DYNDyne Therapeutics, Inc. · Stock option (right to buy)M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	−57.8K sh	—	—	44,500
2024-03-01	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−74.1K sh	$29.23	−$2.17M	564,885
2024-03-01	DYNDyne Therapeutics, Inc. · Stock option (right to buy)M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	−36.6K sh	—	—	342,681
2024-03-01	DYNDyne Therapeutics, Inc.M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	+94.5K sh	$5.54	+$523K	657,951
2024-02-29	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−5,520 sh	$27.50	−$152K	563,471
2024-02-29	DYNDyne Therapeutics, Inc. · Stock option (right to buy)M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	−5,520 sh	—	—	102,343
2024-02-29	DYNDyne Therapeutics, Inc.M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	+5,520 sh	$5.54	+$30.6K	568,991
2024-01-29	DYNDyne Therapeutics, Inc.G Gift	Director, CEO & President	GGift	−20K sh	—	—	564,971
2024-01-29	DYNDyne Therapeutics, Inc.G Gift	Director, CEO & President	GGift	−1,500 sh	—	—	563,471
2024-01-04	DYNDyne Therapeutics, Inc. · Stock option (right to buy)M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	−200K sh	—	—	107,863
2024-01-04	DYNDyne Therapeutics, Inc. · Stock option (right to buy)M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	−18.5K sh	—	—	0
2024-01-04	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−38.3K sh	$19.05	−$730K	584,971
2024-01-04	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−180K sh	$18.40	−$3.32M	623,272
2024-01-04	DYNDyne Therapeutics, Inc.M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	+200K sh	$5.54	+$1.11M	803,507
2024-01-04	DYNDyne Therapeutics, Inc.M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	+18.5K sh	$1.03	+$19.1K	603,507
2024-01-03	DYNDyne Therapeutics, Inc. · Stock option (right to buy)M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	−51.2K sh	—	—	18,536
2024-01-03	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−16K sh	$20.50	−$329K	584,971
2024-01-03	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−19.8K sh	$19.03	−$376K	600,997
2024-01-03	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−15.4K sh	$18.34	−$282K	620,772
2024-01-03	DYNDyne Therapeutics, Inc.M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	+51.2K sh	$1.03	+$52.7K	636,154
2023-12-11	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−7,585 sh	$10.72	−$81.3K	584,971
2023-11-15	DYNDyne Therapeutics, Inc. · Stock Option (right to buy)A Award	Director, CEO & President	AAward	+140K sh	—	—	139,750
2023-11-15	DYNDyne Therapeutics, Inc.A Award	Director, CEO & President	AAward	+359K sh	—	—	592,556
2023-09-18	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−12K sh	$9.41	−$113K	233,679
2023-09-12	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−7,672 sh	$10.41	−$79.9K	245,711
2023-06-12	DYNDyne Therapeutics, Inc.M Exercise/Conversion	Director, CEO & President	MExercise/Conversion	+171K sh	$1.03	+$177K	441,131
2023-06-12	DYNDyne Therapeutics, Inc.S Sale	Director, CEO & President	SSale	−188K sh	$12.61	−$2.37M	253,383

Recent filings

Accepted (ET)
Sep 184
Brumm Joshua T0001628280-26-062701
SEC(opens sec.gov)
Jun 234
Brumm Joshua T0001628280-26-044884
SEC(opens sec.gov)
Dec 174
Brumm Joshua T0001628280-25-057683
SEC(opens sec.gov)
Dec 104
Brumm Joshua T0001628280-25-056331
SEC(opens sec.gov)
Mar 124
Brumm Joshua T0000950170-24-030479
SEC(opens sec.gov)

Companies

Address

C/O CRESCENT BIOPHARMA, INC. 300 FIFTH AVENUE

WALTHAM, MA, 02451