Richard William Scalzo

CIK: 0001789545

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)11 (52.4%)

Position reduction

Option Exercises (M)7 (33.3%)

Derivative conversions

Awards (A)3 (14.3%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (2)

CBIO

CRESCENT BIOPHARMA, INC.

Officer

DYN

Dyne Therapeutics, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (21 total)

CBIO
CRESCENT BIOPHARMA, INC.
Sep 16, 2026
Sale(S)
Direct
568 shares at avg. $17.90$10K
CBIO
CRESCENT BIOPHARMA, INC.
Jun 22, 2026
Sale(S)
Direct
1.1K shares at avg. $17.99$20K
CBIO
CRESCENT BIOPHARMA, INC.
Dec 15, 2025
Award(A)
Direct
5K shares-
CBIO
CRESCENT BIOPHARMA, INC.
Dec 15, 2025
Award(A)
Direct
14.4K shares-
DYN
Dyne Therapeutics, Inc.
Mar 11, 2025
Sale(S)
Direct
1.3K shares at avg. $11.38$15K
DYN
Dyne Therapeutics, Inc.
Mar 5, 2025
Sale(S)
Direct
917 shares at avg. $11.83$11K
DYN
Dyne Therapeutics, Inc.
Feb 18, 2025
Sale(S)
Direct
2.5K shares at avg. $13.95$35K
DYN
Dyne Therapeutics, Inc.
Dec 11, 2024
Sale(S)
Direct
1.5K shares at avg. $28.12$41K
DYN
Dyne Therapeutics, Inc.
Dec 4, 2024
Award(A)
Direct
32.7K shares-
DYN
Dyne Therapeutics, Inc.
Nov 18, 2024
Sale(S)
Direct
2.7K shares at avg. $28.20$77K
DYN
Dyne Therapeutics, Inc.
Sep 18, 2024
Sale(S)
Direct
1.4K shares at avg. $34.55$48K
DYN
Dyne Therapeutics, Inc.
Sep 11, 2024
Sale(S)
Direct
1.5K shares at avg. $31.89$47K
DYN
Dyne Therapeutics, Inc.
Sep 6, 2024
Exercise(M)
Direct
6.6K shares at avg. $10.88$71K
DYN
Dyne Therapeutics, Inc.
Sep 6, 2024
Sale(S)
Direct
124.4K shares at avg. $32.14$4.0M
DYN
Dyne Therapeutics, Inc.
Sep 6, 2024
Exercise(M)
Direct
3.4K shares at avg. $5.54$19K
DYN
Dyne Therapeutics, Inc.
Sep 6, 2024
Exercise(M)
Direct
6.5K shares at avg. $5.54$36K
DYN
Dyne Therapeutics, Inc.
Sep 6, 2024
Sale(S)
Direct
1.7K shares at avg. $32.63$55K
DYN
Dyne Therapeutics, Inc.
Sep 6, 2024
Exercise(M)
Direct
34.8K shares at avg. $19.00$662K
DYN
Dyne Therapeutics, Inc.
Sep 6, 2024
Exercise(M)
Direct
16.7K shares at avg. $13.12$219K
DYN
Dyne Therapeutics, Inc.
Sep 6, 2024
Exercise(M)
Direct
29.8K shares at avg. $8.58$256K
DYN
Dyne Therapeutics, Inc.
Sep 6, 2024
Exercise(M)
Direct
18.8K shares at avg. $10.72$201K

		Type	Shares	Price		Ownership
Sep 16, 2026	CBIO CRESCENT BIOPHARMA, INC.	Sale(S)	568	$17.90	$10,167	Direct
Jun 22, 2026	CBIO CRESCENT BIOPHARMA, INC.	Sale(S)	1,112	$17.99	$20,005	Direct
Dec 15, 2025	CBIO CRESCENT BIOPHARMA, INC.	Award(A)	5,000	-	-	Direct
Dec 15, 2025	CBIO CRESCENT BIOPHARMA, INC.	Award(A)	14,422	-	-	Direct
Mar 11, 2025	DYN Dyne Therapeutics, Inc.	Sale(S)	1,343	$11.38	$15,283	Direct
Mar 5, 2025	DYN Dyne Therapeutics, Inc.	Sale(S)	917	$11.83	$10,848	Direct
Feb 18, 2025	DYN Dyne Therapeutics, Inc.	Sale(S)	2,488	$13.95	$34,708	Direct
Dec 11, 2024	DYN Dyne Therapeutics, Inc.	Sale(S)	1,455	$28.12	$40,915	Direct
Dec 4, 2024	DYN Dyne Therapeutics, Inc.	Award(A)	32,700	-	$0	Direct
Nov 18, 2024	DYN Dyne Therapeutics, Inc.	Sale(S)	2,735	$28.20	$77,127	Direct
Sep 18, 2024	DYN Dyne Therapeutics, Inc.	Sale(S)	1,390	$34.55	$48,024	Direct
Sep 11, 2024	DYN Dyne Therapeutics, Inc.	Sale(S)	1,468	$31.89	$46,815	Direct
Sep 6, 2024	DYN Dyne Therapeutics, Inc.	Exercise(M)	6,552	$10.88	$71,286	Direct
Sep 6, 2024	DYN Dyne Therapeutics, Inc.	Sale(S)	124,374	$32.14	$3,997,380	Direct
Sep 6, 2024	DYN Dyne Therapeutics, Inc.	Exercise(M)	3,353	$5.54	$18,576	Direct
Sep 6, 2024	DYN Dyne Therapeutics, Inc.	Exercise(M)	6,502	$5.54	$36,021	Direct
Sep 6, 2024	DYN Dyne Therapeutics, Inc.	Sale(S)	1,700	$32.63	$55,471	Direct
Sep 6, 2024	DYN Dyne Therapeutics, Inc.	Exercise(M)	34,833	$19.00	$661,827	Direct
Sep 6, 2024	DYN Dyne Therapeutics, Inc.	Exercise(M)	16,696	$13.12	$219,052	Direct
Sep 6, 2024	DYN Dyne Therapeutics, Inc.	Exercise(M)	29,792	$8.58	$255,615	Direct
Sep 6, 2024	DYN Dyne Therapeutics, Inc.	Exercise(M)	18,750	$10.72	$201,000	Direct

1-21 of 21 transactions

About Scalzo Richard William

Scalzo Richard William (SEC CIK 0001789545) files insider reports with the SEC as Chief Financial Officer of CRESCENT BIOPHARMA, INC. (CBIO) and SVP, Head of Finance & Admin. of Dyne Therapeutics, Inc. (DYN).

Signal8 holds 13 ownership filings by Scalzo Richard William (1 Form 3, 12 Form 4), filed between Sep 10, 2024 and Sep 18, 2026. Those filings report 21 transactions, from Sep 6, 2024 to Sep 16, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Scalzo Richard William's filings is in WALTHAM, MA.

Recent filings by Scalzo Richard William

Sep 16, 2026: Open-market sale of CBIO shares (Form 4, code S).
Jun 22, 2026: Open-market sale of CBIO shares (Form 4, code S).
Dec 15, 2025: Grants or awards of CBIO shares (2 lines, Form 4, code A).
Mar 11, 2025: Open-market sale of DYN shares (Form 4, code S).
Mar 5, 2025: Open-market sale of DYN shares (Form 4, code S).

Other insiders filing for CRESCENT BIOPHARMA, INC. (CBIO)

Lynch Ryan
Pinkas Jan, Chief Scientific Officer
Im Ellie Eunkyung, Chief Medical Officer
Bispham Barbara Harlin
Brumm Joshua T, Chief Executive Officer
McNeill Jonathan, President and COO

How to read Form 4 transaction codes