AQR Arbitrage LLC 4

What Happened

• AQR Capital Management Holdings, LLC (a reported 10% owner) sold 4,619 shares of IB Acquisition Corp. (IBAC) on 2026-03-20. The shares were disposed at $10.75 each for total proceeds of $49,654. The Form 4 lists the transaction as an open market or private sale (code S). This was a sale (not a purchase), which is often routine for institutional holders.

Key Details

• Transaction date and price: 2026-03-20 — 4,619 shares at $10.75 per share.
• Total proceeds: $49,654.
• Shares owned after transaction: not reported in the provided filing details.
• Footnotes of note:
  • F1: AQR Capital Management, LLC is a wholly owned subsidiary of AQR Capital Management Holdings, LLC; AQR Arbitrage, LLC is deemed controlled by AQR Capital Management, LLC; those entities act as investment manager to AQR DELTA Master Account, L.P.
  • F2: AQR Capital Management III, LLC is the general partner of AQR DELTA Master Account, L.P.
• Filing timing: The Form 4 was filed on 2026-03-24 (four days after the trade). Form 4s are generally due within two business days, so this filing date is later than the typical 2-business-day window.

Context

• This filing reports institutional owner activity (a 10% holder), not an individual officer or director trade; institutional sales can reflect portfolio rebalancing or liquidity needs rather than a view on company fundamentals. No options, awards, or gifts were involved in this transaction.