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Who

David Goeckeler

Chairman & CEO

Company insider

Files Form 4 as: Chairman & CEO, Sandisk; Director, Automatic Data Processing; Chief Executive Officer, Western Digital; EVP, Networking and Security, Cisco Systems.

In numbers

Trades disclosed
180
Buys
0
Sells
10
Bought
$0
Sold
$233.0M
Companies
4
Companies where not an officer
1
First trade
11 Sep 2017
Last trade
17 Sep 2026
Last filed
21 Sep 2026

Companies traded

Where they are an officer
SNDK SandiskDirector, Officer · Hardware, Devices & Storage · last 17 Sep 20260 buys · 2 sells
WDC Western DigitalDirector, Officer · Hardware, Devices & Storage · last 27 Nov 20240 buys · 2 sells
CSCO Cisco SystemsOfficer · Hardware, Devices & Storage · last 19 Feb 20200 buys · 6 sells
Everywhere else they filed: board seats, 10% stakes, other companies
ADP Automatic Data ProcessingDirector · Payments & Processors · last 12 Nov 20250 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
20Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Code A—3,296 at $0.00filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$6.5M4,139 at $1,576.82filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$4.5M2,876 at $1,578.34filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$1.0M640 at $1,579.41filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$2.3M1,480 at $1,580.25filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$1.7M1,080 at $1,583.80filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$2.4M1,520 at $1,585.85filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$262K165 at $1,587.00filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$63K40 at $1,567.26filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$15.1M9,604 at $1,569.00filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$1.4M910 at $1,570.04filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$7.2M4,558 at $1,571.21filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$1.8M1,157 at $1,572.60filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$481K306 at $1,573.15filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$4.1M2,588 at $1,574.57filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$4.4M2,778 at $1,575.58filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Code A—3,296 at $0.00filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$63K40 at $1,567.26filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$15.1M9,604 at $1,569.00filing
17 Sep 2026filed 21 Sep 2026SNDK SandiskHardware, Devices & StorageSEC FORM 4 Sold$1.4M910 at $1,570.04filing

Sectors

Technology10

Buys in green, sells in red, by the company’s sector.

Related people

Bernard ShekChief Legal Officer and Secty · Chief Legal Officer and Secty at Sandisk, filing Form 4 there in the last year
Cynthia L. TregillisChief Legal Officer & Corp Sec · Chief Legal Officer & Corp Sec at Western Digital, filing Form 4 there in the last year
Girish D. RishiDirector · Director at Cisco Systems, filing Form 4 there in the last year
Oliver TuszikEVP, Global Sales · EVP, Global Sales at Cisco Systems, filing Form 4 there in the last year
Stephanie A. StreeterDirector · Director at Western Digital, filing Form 4 there in the last year
John BoozmanSenator, AR · Also traded CSCO in the last 90 days
Maria Elvira SalazarRepresentative, FL-27 · Also traded CSCO in the last 90 days
Gilbert Ray Cisneros, Jr.Representative, CA-31 · Also traded WDC in the last 90 days