Richard Brudnick

CIK: 0001692359

Transaction Breakdown

Open Market Buys (P)1 (14.3%)

High conviction signal

Open Market Sales (S)2 (28.6%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (57.1%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

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

Companies & Roles (3)

SRRK

Scholar Rock Holding Corp

Director

IFRX

InflaRx N.V.

Director

PRME

Prime Medicine, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (7 total)

SRRK
Scholar Rock Holding Corp
Jun 4, 2026
Award(A)
Direct
6.8K shares-
SRRK
Scholar Rock Holding Corp
May 29, 2025
Sale(S)
Direct
4.7K shares at avg. $29.63$139K
SRRK
Scholar Rock Holding Corp
May 29, 2025
Sale(S)
Direct
1.4K shares at avg. $30.00$42K
SRRK
Scholar Rock Holding Corp
May 22, 2025
Award(A)
Direct
7.6K shares-
PRME
Prime Medicine, Inc.
May 20, 2025
Purchase(P)
Direct
20K shares at avg. $1.19$24K
PRME
Prime Medicine, Inc.
Feb 27, 2025
Award(A)
Stock Option (right to buy)
Direct
225K shares-
PRME
Prime Medicine, Inc.
Dec 5, 2024
Award(A)
Stock Option (right to buy)
Direct
19.3K shares-

		Type	Shares	Price		Ownership
Jun 4, 2026	SRRK Scholar Rock Holding Corp	Award(A)	6,839	-	$0	Direct
May 29, 2025	SRRK Scholar Rock Holding Corp	Sale(S)	4,675	$29.63	$138,526	Direct
May 29, 2025	SRRK Scholar Rock Holding Corp	Sale(S)	1,400	$30.00	$42,004	Direct
May 22, 2025	SRRK Scholar Rock Holding Corp	Award(A)	7,632	-	-	Direct
May 20, 2025	PRME Prime Medicine, Inc.	Purchase(P)	20,000	$1.19	$23,790	Direct
Feb 27, 2025	PRME Prime Medicine, Inc.	Award(A) Stock Option (right to buy)	225,000	-	-	Direct
Dec 5, 2024	PRME Prime Medicine, Inc.	Award(A) Stock Option (right to buy)	19,300	-	-	Direct

1-7 of 7 transactions

About Brudnick Richard

Brudnick Richard (SEC CIK 0001692359) files insider reports with the SEC as Director of Scholar Rock Holding Corp (SRRK), Director of InflaRx N.V. (IFRX) and Chief Business Officer of Prime Medicine, Inc. (PRME).

Signal8 holds 7 ownership filings by Brudnick Richard (1 Form 3, 6 Form 4), filed between Dec 9, 2024 and Jun 8, 2026. Those filings report 7 transactions, from Dec 5, 2024 to Jun 4, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Brudnick Richard's filings is in CAMBRIDGE, MA.

Recent filings by Brudnick Richard

Jun 4, 2026: Grant or award of SRRK shares (Form 4, code A).
May 29, 2025: Open-market sales of SRRK shares (2 lines, Form 4, code S).
May 22, 2025: Grant or award of SRRK shares (Form 4, code A).
May 20, 2025: Open-market purchase of PRME shares (Form 4, code P).
Feb 27, 2025: Grant or award of PRME derivative securities (Form 4, code A).

Other insiders filing for Scholar Rock Holding Corp (SRRK)

AKKARAJU SRINIVAS, Director
Woods Keith, Chief Operating Officer
Hallal David, Chief Executive Officer
FLIER JEFFREY S., Director
Gilman Michael, Director
Burow Kristina, Director

How to read Form 4 transaction codes