George Bickerstaff

CIK: 0001329646

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)2 (28.6%)

Position reduction

Option Exercises (M)3 (42.9%)

Derivative conversions

Awards (A)2 (28.6%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

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

Companies & Roles (1)

CDNA

CareDx, Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (7 total)

CDNA
CareDx, Inc.
Aug 5, 2026
Sale(S)
Direct
20K shares at avg. $46.28$926K
CDNA
CareDx, Inc.
Jun 12, 2026
Award(A)
Direct
9.8K shares-
CDNA
CareDx, Inc.
Sep 11, 2025
Exercise(M)
Direct
29.1K shares at avg. $7.96$232K
CDNA
CareDx, Inc.
Jun 13, 2025
Award(A)
Direct
12.1K shares-
CDNA
CareDx, Inc.
Mar 10, 2025
Sale(S)
Direct
20K shares at avg. $18.36$367K
CDNA
CareDx, Inc.
Nov 1, 2024
Exercise(M)
Direct
5.3K shares at avg. $5.85$31K
CDNA
CareDx, Inc.
Nov 1, 2024
Exercise(M)
Direct
2.2K shares at avg. $5.49$12K

		Type	Shares	Price		Ownership
Aug 5, 2026	CDNA CareDx, Inc.	Sale(S)	20,000	$46.28	$925,700	Direct
Jun 12, 2026	CDNA CareDx, Inc.	Award(A)	9,795	-	$0	Direct
Sep 11, 2025	CDNA CareDx, Inc.	Exercise(M)	29,136	$7.96	$231,923	Direct
Jun 13, 2025	CDNA CareDx, Inc.	Award(A)	12,103	-	-	Direct
Mar 10, 2025	CDNA CareDx, Inc.	Sale(S)	20,000	$18.36	$367,102	Direct
Nov 1, 2024	CDNA CareDx, Inc.	Exercise(M)	5,255	$5.85	$30,742	Direct
Nov 1, 2024	CDNA CareDx, Inc.	Exercise(M)	2,226	$5.49	$12,221	Direct

1-7 of 7 transactions

About Bickerstaff George

Bickerstaff George (SEC CIK 0001329646) files insider reports with the SEC as Director of CareDx, Inc. (CDNA).

Signal8 holds 6 ownership filings by Bickerstaff George, all Form 4s, filed between Nov 5, 2024 and Aug 6, 2026. Those filings report 7 transactions, from Nov 1, 2024 to Aug 5, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Bickerstaff George's filings is in BRISBANE, CA.

Recent filings by Bickerstaff George

Aug 5, 2026: Open-market sale of CDNA shares (Form 4, code S).
Jun 12, 2026: Grant or award of CDNA shares (Form 4, code A).
Sep 11, 2025: Option exercise of CDNA shares (Form 4, code M).
Jun 13, 2025: Grant or award of CDNA shares (Form 4, code A).
Mar 10, 2025: Open-market sale of CDNA shares (Form 4, code S).

Other insiders filing for CareDx, Inc. (CDNA)

Novack Jeffrey Adam, Secretary and General Counsel
Hanna John Walter JR, President and CEO
Kennedy Keith, CFO & COO
Meng Jessica, Chief Commercial Officer
Goldberg Michael, Director
COURNOYER CHRISTINE, Director

How to read Form 4 transaction codes