Transaction · 0001242648-26-000028

Ilkbahar Alper

Ilkbahar Alper, EVP, CTO, reported an open-market or private sale at Sandisk Corp involving 80.000000 shares for an estimated $124622.80. Reported holdings after the transaction were 44174.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SEVP, CTO
SNDKSandisk Corp
Trade date
Sep 03, 2026
Filing date
Sep 09, 2026
View on SEC Insider profile
Estimated value-$124kShares × reported price
Shares traded80$1,557.79 per share
Holdings after44.1kDirect
% of reported position traded0.18%This security and ownership context
How reported position traded is calculated

Shares sold ÷ (holdings after + shares sold). Estimated position before: 44,254 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

Filing warnings

Notes recorded with this filing
1 warning
delayed filingThe filing was reported 6 calendar days after the transaction date.

SNDK price since this filing

Daily closing prices, with the filing date and available return windows
SNDK · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago -19.1%1w ago -15.8%1d ago -11.9%
Returns since7d -13.8%30d -8.8%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001242648-26-000028
Common Stock
Transaction date
Sep 03, 2026
Filed Sep 09, 2026, 12:49 AM · 6d delay
Shares
80 sh
$1,557.79 per share
Estimated value
-$124k
Computed from shares × price
Holdings after
44,174 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Cluster Selling Delayed Filing Direct Ownership Repeat Seller 10b5-1 Detected
Filing-only score

-10 points

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

How this score is calculated
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • tenb5_1_detected-10 points

    is_10b5_1 = true

    Stored filing content includes detected 10b5-1 language.
  • delayed_filing-6 points

    reporting_delay_days = 6

    Filing delay exceeds the configured threshold.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

EVP & Chief Technology Officer

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 4, 2026.

  2. F2

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1514.89 to a high of $1515.20. The Reporting Person undertakes to…

  3. F3

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1517.68 to a high of $1517.69. The Reporting Person undertakes to…

  4. F4

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1518.79 to a high of $1519.54. The Reporting Person undertakes to…

  5. F5

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1520.47 to a high of $1521.39. The Reporting Person undertakes to…

  6. F6

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1523.40 to a high of $1523.81 The Reporting Person undertakes to…

  7. F7

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1526.57 to a high of $1527.05. The Reporting Person undertakes to…

  8. F8

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1529.22 to a high of $1530.19. The Reporting Person undertakes to…

  9. F9

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1530.45 to a high of $1530.59. The Reporting Person undertakes to…

  10. F10

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1533.17 to a high of $1534.14. The Reporting Person undertakes to…

  11. F11

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1534.17 to a high of $1534.79. The Reporting Person undertakes to…

  12. F12

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1535.28 to a high of $1536.03. The Reporting Person undertakes to…

  13. F13

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1537.18 to a high of $1537.90. The Reporting Person undertakes to…

  14. F14

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1538.34 to a high of $1538.48. The Reporting Person undertakes to…

  15. F15

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1539.46 to a high of $1539.76. The Reporting Person undertakes to…

  16. F16

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1540.85 to a high of $1541.16. The Reporting Person undertakes to…

  17. F17

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1542.65 to a high of $1542.70. The Reporting Person undertakes to…

  18. F18

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1543.75 to a high of $1544.62. The Reporting Person undertakes to…

  19. F19

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1545.94 to a high of $1546.10. The Reporting Person undertakes to…

  20. F20

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1547.04 to a high of $1547.88. The Reporting Person undertakes to…

  21. F21

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1552.99 to a high of $1553.86. The Reporting Person undertakes to…

  22. F22

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1555.48 to a high of $1555.66. The Reporting Person undertakes to…

  23. F23

    Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1557.62 to a high of $1557.95. The Reporting Person undertakes to…

Original filing · 0001242648-26-000028
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