Jane Street Group, LLC and four affiliated entities filed an amended beneficial ownership statement with the SEC on November 6, 2026, disclosing a combined position in the common stock of Sandisk Corp, a flash memory storage company headquartered in Milpitas, California.

Key Highlights

  • Top-level position: Jane Street Group, LLC reported aggregate beneficial ownership of 5,478,633 shares, representing 3.7% of Sandisk Corp's outstanding common stock.
  • Primary operating entity: Jane Street Capital, LLC, classified as a broker-dealer, reported shared voting and dispositive power over 5,225,211 shares, equal to 3.6% of the class.
  • No sole control: All reporting persons showed 0 shares with sole voting or sole dispositive power; all holdings are reported as shared voting and shared dispositive power.
  • Triggering event date: The filing identifies September 30, 2026 as the date of the event requiring this amended statement.
  • Five reporting persons: The filing covers Jane Street Group, LLC; Jane Street Capital, LLC; Jane Street Global Trading, LLC; Leonard Street Holdings, LP; and Jane Street Singapore Pte. Limited.
  • Purpose of holdings: The filers certified that the securities "were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer."

Jane Street's Disclosed Position Across Five Affiliated Entities

According to the filing, Jane Street Group, LLC serves as the parent holding company and is classified as type "HC" under the reporting framework. Its subsidiary Jane Street Capital, LLC, organized in Delaware and classified as a broker-dealer, holds the largest share of the reported position at 5,225,211 shares with shared voting and dispositive power, amounting to 3.6% of Sandisk Corp's common stock (NASDAQ:SNDK, CUSIP 80004C200, $0.01 par value per share).

Two additional subsidiaries contribute smaller portions to the aggregate. Jane Street Global Trading, LLC reported shared power over 15,293 shares, representing 0.0% of the class, while Leonard Street Holdings, LP reported shared power over 238,102 shares, or 0.2% of the class. Jane Street Singapore Pte. Limited, organized in Singapore and the only non-U.S. entity among the filers, reported shared power over just 27 shares. All five entities listed 250 Vesey Street, 3rd Floor, New York, NY 10281 as their principal address, except the Singapore entity, which is located at 2 Central Boulevard, IOI Central Boulevard Towers, Singapore 018916.

Sandisk Corp, the issuer, is a flash memory storage company with principal executive offices at 951 Sandisk Drive, Milpitas, California 95035. The filing is designated Amendment No. 1, indicating a prior statement was on record. Jeremy Kahn signed as authorized signatory on behalf of all five reporting persons on November 6, 2026. Item 6 of the filing states that ownership on behalf of another person is "Not Applicable," and Item 8 indicates the group identification provisions do not apply.

What Was Disclosed

Jane Street Group, LLC and four affiliated entities filed an amended ownership statement disclosing aggregate beneficial ownership of 5,478,633 shares, or 3.7%, of Sandisk Corp common stock, with all voting and dispositive power held on a shared basis as of September 30, 2026.