FLORANCE ANDREW C 4

What Happened
Andrew C. Florance (President, CEO and Director) disposed of a total of 124,204 CoStar (CSGP) shares on Feb 19, 2026. Of those, 104,983 shares were forfeited from a February 14, 2023 performance restricted stock grant (no cash proceeds). An additional 19,221 shares were withheld to satisfy tax liability, valued at $49.07 per share (closing Nasdaq price), amounting to approximately $943,174.

Key Details

• Transaction date: 2026-02-19 (reported on Form 4 filed 2026-02-23; filing was timely).
• Dispositions reported:
  • D (Disposition to issuer): 104,983 shares @ $0.00 — forfeiture of PRS shares (footnote F1).
  • F (Payment of exercise price or tax liability): 19,221 shares @ $49.07 — shares withheld for taxes, $943,174 (footnote F2).
• Shares owned after transaction: not specified in the provided excerpt; see the full Form 4 for post-transaction holdings.
• Footnotes: F1 = forfeiture upon certification of performance goal; F2 = $49.07 is the Feb 19, 2026 Nasdaq close.

Context
This was not an open-market sale. The larger item (104,983 shares) was a forfeiture of a performance award after performance was certified; the smaller item (19,221 shares) was a share-withholding to cover tax obligations — a common administrative step that does not necessarily signal a CEO decision to sell stock into the market.