$SNDK

$1,304.94 +$49.36 (3.93%) Live

$SNDK Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 146.4M shares outstanding

Who owns SNDK?

By type of holder

Institutions 74.9% Insiders 5.6% Everyone else 19.6%

Concentration Top 10 holders own 41.6%

FMR LLC 5.4% · BlackRock, Inc. 7.0%

Institutional ownership

74.9%

-2.5 pts vs last qtr

Institutional holders

1,819

+638 vs last qtr

Net shares bought

−3.6M

by institutions in Q2 2026

New / sold out

742 / 104

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Invesco Ltd. +4.4M
Jpmorgan Chase & Co +2.5M

Biggest sellers in Q2 2026

FMR LLC −5.5M
Situational Awareness Partners LP SOLD OUT −1.1M

Who is planning to sell?

Notices of proposed sale, last 12 months

$152M

24 notices from 10 people

Shares covered

119.4K

0.08% of the company

Arranged in advance

87%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

David Goeckeler Director 10b5-1 $107M
Alper Ilkbahar Officer $13.3M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2023–FY2026

+6.9%

+2.25% a year

Each share's claim on the business

−6.5%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$4.52B vs $728M

over 4 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years76% Under 1 year24%

Quarterly turnover

23.0%

of institutional shares changed hands

Top 10 managers, median time held

1.3 years

Super Investors

Investment managers reporting SNDK on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
F FMR LLC	7.9M	5.37%	−5.5M (−41.3%)	2025	0.8%
Shares held by quarter Peak holding21.8M (Q3'25) Change over 8 quarters+7.9M Share of the company5.370% FMR LLC's full portfolio →
B BlackRock, Inc.	10.3M	7.03%	−108.2K (−1.0%)	2025	0.4%
Shares held by quarter Peak holding16.8M (Q2'25) Change over 8 quarters+10.3M Share of the company7.030% BlackRock, Inc.'s full portfolio →

FMR LLC

7.9M

% of company

5.37%

Change vs last qtr

−5.5M (−41.3%)

Held since

2025

BlackRock, Inc.

10.3M

% of company

7.03%

Change vs last qtr

−108.2K (−1.0%)

Held since

2025

28 more super investors behind a free account

See every manager holding SanDisk Corporation, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting SNDK on Form N-PORT; together they hold 33.1% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$10.7B	4.7M	3.21%	0.47%	June 30, 2026
V5 Vanguard 500 Index Fund Vanguard Index Funds	$8.72B	3.8M	2.62%	0.52%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$10.7B

% of company

3.21%

% of the fund

0.47%

As of

June 30, 2026

Vanguard 500 Index Fund

Vanguard Index Funds

Position value

$8.72B

% of company

2.62%

% of the fund

0.52%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding SanDisk Corporation and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
WD Western Digital Corp Insider	7.5M	5.13%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company5.130% Western Digital Corp's insider activity →
GD Goeckeler David Insider	382.9K	0.26%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.260% Goeckeler David's insider activity →

Western Digital Corp

Insider

7.5M

% of company

5.13%

Change vs last qtr

—

Held since

—

Goeckeler David

Insider

382.9K

% of company

0.26%

Change vs last qtr

—

Held since

—

13 more holders behind a free account

See every insider and 5%+ holder of SanDisk Corporation.

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