Magnetar Financial LLC and three affiliated reporting persons filed a Schedule 13G with the SEC on November 13, 2026, disclosing beneficial ownership of 980,000 ordinary shares of OceanLight Acquisition Corp as of September 30, 2026.

Key Highlights

  • 980,000 shares: Each of the four reporting persons may be deemed to beneficially own 980,000 ordinary shares of OceanLight Acquisition Corp, par value $0.0001 per share.
  • 5.80% of class: The 980,000 shares represent approximately 5.80% of the approximately 16,882,250 shares outstanding as of September 30, 2026.
  • Shared power only: All 980,000 shares carry shared voting power and shared dispositive power; sole voting and sole dispositive power are each reported as 0.
  • Six underlying funds: The shares are held across six Magnetar funds, led by Constellation Master Fund at 274,400 shares, followed by Structured Credit Fund at 215,600 shares, Alpha Star Fund at 205,800 shares, Xing He Master Fund at 166,600 shares, Lake Credit Fund at 78,400 shares, and Waterfront Series A Fund at 39,200 shares.
  • Reporting persons: The filing covers Magnetar Financial LLC (investment adviser), Magnetar Capital Partners LP (sole member and parent holding company), Supernova Management LLC (general partner), and David J. Snyderman (administrative manager of Supernova Management).

Magnetar Financial's Beneficial Ownership Position in OceanLight Acquisition Corp

According to the filing, Magnetar Financial LLC serves as the investment adviser to the six Magnetar Funds and, in that capacity, exercises voting and investment power over the shares held in those funds' accounts. OceanLight Acquisition Corp, a blank-check acquisition company whose ordinary shares carry a par value of $0.0001 per share, is incorporated with principal executive offices located at 1185 Avenue of the Americas, Suite 349, New York, NY 10036. The CUSIP number for the reported class of securities is G8280M108.

The filing states that the total outstanding share count of approximately 16,882,250 was drawn from the issuer's Form 10-Q filed on October 2, 2026. Magnetar Capital Partners LP is identified as the sole member and parent holding company of Magnetar Financial, while Supernova Management LLC serves as the general partner of Magnetar Capital Partners. David J. Snyderman, a United States citizen, is the administrative manager of Supernova Management and is listed as a reporting person in his capacity as a holding company and individual filer. All four reporting persons share the same principal business address: 1603 Orrington Avenue, 13th Floor, Evanston, Illinois 60201.

The certification included in the filing states that "the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer." The filing was signed by Hayley Stein as attorney-in-fact for David J. Snyderman on November 13, 2026.

What Was Disclosed

The Schedule 13G discloses that Magnetar Financial LLC and three affiliated entities collectively hold beneficial ownership of 980,000 ordinary shares of OceanLight Acquisition Corp, representing approximately 5.80% of the outstanding class, with all voting and dispositive power held on a shared basis as of September 30, 2026.