BRILLIANT HEATHER E 4

What Happened
Heather E. Brilliant, Chief Executive Officer of Diamond Hill Investment Group (DHIL), had 2,809 shares disposed on April 1, 2026 as shares were withheld to satisfy tax withholding obligations tied to a restricted stock award. The shares were valued at $172.10 each, totaling about $483,429. This was a tax-withholding disposition (code F), not an open-market sale or purchase.

Key Details

• Transaction date and price: April 1, 2026 — 2,809 shares @ $172.10 each.
• Total value of shares withheld: approximately $483,429.
• Shares owned after transaction: Not disclosed in the provided filing.
• Footnote: F1 — Represents shares withheld to pay taxes associated with restricted stock that vested on April 1, 2026.
• Filing timeliness: Form 4 filed April 6, 2026 — appears to be filed after the typical 2-business-day deadline for Form 4s.

Context
This was a routine tax-withholding action tied to vesting of restricted stock, where the company retains (or “withholds”) shares to cover the insider’s tax liability. Such withholdings are administrative and do not necessarily signal the insider’s view of the company’s stock; purchases are generally considered more informative about insider sentiment.