Sandisk SNDK Insider Ownership

NASDAQ SNDK

$1,238.03 -22.90 (-1.82%)

At close: Oct 23, 2026 · 4:00 PM EDT

Insider Holdings by Owner

8.16Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

5.56%

▼-0.080% pp QoQ

Shares Held by Insiders

8.17Mn

filed for Sep 2026

▼-2.09% QoQ

Shares Outstanding

147.00Mn

147,000,000 shares

Direct Holdings

8.16Mn

Indirect: 13.41K

Net Shares Traded (QoQ)

-174.11K

net selling in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 23, 2026

Over the past year, SNDK insiders sold $133.77 million of stock (88.89K shares) on the open market and bought none.

Behind Sandisk's open-market sales in the past 12 months were 7 insiders, and no insider bought.
David Goeckeler (Chairman & CEO) sold the most Sandisk stock on the open market over the past 12 months, $104.97 million (67.68K shares), most recently on September 17, 2026.
The newest open-market trade among Sandisk insiders came on October 1, 2026, when Bernard Shek (Chief Legal Officer and Secretary) made a sale of 600 shares for $1.04 million.
Outside the open market, Sandisk insiders received 10.99K shares in stock awards, acquired 276 shares through option exercises and conversions, gave up 132.9K shares to cover taxes or exercise prices and gave away 26.86K shares as gifts over the past 12 months.
Per Business Quant, SNDK insiders together hold 8.17Mn shares based on their latest Form 4 filings, down 2.10% from 8.35Mn shares at the end of Q2 2026 and down 2.61% from 8.39Mn shares at the end of Q3 2025.
Sandisk insiders hold 8.16Mn shares directly (99.84% of their total) and 13.41K shares (0.16%) indirectly, through entities such as trusts and partnerships.
The insider holdings in Sandisk belong to 15 insiders who have reported on Form 4 within the past two years.
SNDK's three largest insider shareholders, per their latest Form 4 filings, are Western Digital Corp (10% owner, 7.51Mn shares), David Goeckeler (Chairman & CEO, 382.87K shares) and Luis Felipe Visoso (EVP & CFO, 132.61K shares).
The holding of Western Digital Corp makes up 91.94% of all shares held by Sandisk insiders.
Institutional holders reported 74.27% of Sandisk's outstanding shares for Q2 2026; insiders' latest Form 4 filings put their stake at about 5.56%, and other investors, including the public, hold the remaining 20.17%.
Over the past 12 months, 12 insiders reported transactions in Sandisk stock in 69 Form 4 filings.
This summary of Sandisk insider activity covers Form 4 filings through October 22, 2026.

Form 4 Holdings

Insiders Holding SNDK

Insiders 15

Shares held 8.16Mn

Of outstanding 5.55%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Digital Corp Western	TenPercentOwner	7,513,019	0	7,513,019	92.1%	09 Jun, 2025
2	David Goeckeler	Chairman Ceo	382,865	0	382,865	4.7%	21 Sep, 2026
3	Luis Felipe Visoso	Evp Cfo	132,611	0	132,611	1.6%	21 Sep, 2026
4	Alper Ilkbahar	Evp Chief Technology Officer	42,109	0	42,109	0.5%	21 Sep, 2026
5	Bernard Shek	Chief Legal Officer And Secty	25,266	0	25,266	0.3%	22 Oct, 2026
6	Michael Pokorny	Vp, Chief Accounting Officer	21,550	0	21,550	0.3%	21 Sep, 2026
7	Miyuki Suzuki	Director	9,907	0	9,907	0.1%	26 Feb, 2026
8	Kimberly Alexy	Director	5,401	0	5,401	0.1%	04 Mar, 2025
9	Richard B. Ii Cassidy	Director	4,914	0	4,914	0.1%	19 Nov, 2025
10	Matthew E Massengill	Director	4,840	0	4,840	0.1%	04 Mar, 2025
11	Thomas Caulfield	Director	0	4,834	4,834	0.1%	14 May, 2026
12	Devinder Kumar	Director	4,769	0	4,769	0.1%	19 Nov, 2025
13	Ellyn Shook	Director	4,750	0	4,750	0.1%	19 Nov, 2025
14	Necip Sayiner	Director	2,900	0	2,900	0.0%	11 May, 2026
15	Alexander R. Bradley	Director	863	0	863	0.0%	02 Jan, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

212 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
20 Oct, 2026	Bernard Shek	Chief Legal Officer And Secty	Disposed F	322	$1,365.38	$439.65K	25,266	Direct
01 Oct, 2026	Bernard Shek	Chief Legal Officer And Secty	Disposed S	600	$1,734.94	$1.04Mn	25,588	Direct
17 Sep, 2026	David Goeckeler	Chairman Ceo	Acquired A	3,296	$0.00	$0	416,706	Direct
17 Sep, 2026	Alper Ilkbahar	Evp Chief Technology Officer	Acquired A	1,619	$0.00	$0	42,109	Direct
17 Sep, 2026	Bernard Shek	Chief Legal Officer And Secty	Acquired A	1,001	$0.00	$0	26,306	Direct
17 Sep, 2026	Michael Pokorny	Vp, Chief Accounting Officer	Acquired A	458	$0.00	$0	21,550	Direct
17 Sep, 2026	Luis Felipe Visoso	Evp Cfo	Acquired A	1,635	$0.00	$0	132,611	Direct
17 Sep, 2026	David Goeckeler	Chairman Ceo	Disposed S	40	$1,567.26	$62.69K	416,666	Direct
20 Sep, 2026	Bernard Shek	Chief Legal Officer And Secty	Disposed F	118	$1,791.82	$211.43K	26,188	Direct
17 Sep, 2026	David Goeckeler	Chairman Ceo	Disposed S	9,604	$1,569.00	$15.07Mn	407,062	Direct
17 Sep, 2026	David Goeckeler	Chairman Ceo	Disposed S	910	$1,570.04	$1.43Mn	406,152	Direct
17 Sep, 2026	David Goeckeler	Chairman Ceo	Disposed S	4,558	$1,571.21	$7.16Mn	401,594	Direct
17 Sep, 2026	David Goeckeler	Chairman Ceo	Disposed S	1,157	$1,572.60	$1.82Mn	400,437	Direct
17 Sep, 2026	David Goeckeler	Chairman Ceo	Disposed S	306	$1,573.15	$481.39K	400,131	Direct
17 Sep, 2026	David Goeckeler	Chairman Ceo	Disposed S	2,588	$1,574.57	$4.07Mn	397,543	Direct
17 Sep, 2026	David Goeckeler	Chairman Ceo	Disposed S	2,778	$1,575.58	$4.38Mn	394,765	Direct
17 Sep, 2026	David Goeckeler	Chairman Ceo	Disposed S	4,139	$1,576.82	$6.53Mn	390,626	Direct
17 Sep, 2026	David Goeckeler	Chairman Ceo	Disposed S	2,876	$1,578.34	$4.54Mn	387,750	Direct
17 Sep, 2026	David Goeckeler	Chairman Ceo	Disposed S	640	$1,579.41	$1.01Mn	387,110	Direct
17 Sep, 2026	David Goeckeler	Chairman Ceo	Disposed S	1,480	$1,580.25	$2.34Mn	385,630	Direct

Showing 1 to 20 of 212 transactions