FLORANCE ANDREW C 4

What Happened

• Andrew C. Florance, President, CEO and Director of CoStar Group (CSGP), disposed of 17,482 shares on Feb 15, 2026 as payment for tax withholding related to a prior equity award/exercise. The shares were recorded at $44.99 each, for an aggregate value of approximately $786,515. This filing reports the share withholding (code F), not an open-market sale for investment purposes.

Key Details

• Transaction date: February 15, 2026 (period of report); Form 4 filed Feb 18, 2026.
• Price used: $44.99 per share (footnote indicates this was the Nasdaq closing price on the last preceding business day, Feb 13, 2026).
• Shares disposed (withheld for taxes): 17,482; total value ≈ $786,515.
• Shares owned after transaction: not specified in the provided excerpt of the filing.
• Footnotes/remarks: Footnote F1 notes the $44.99 closing price on Feb 13, 2026; Exhibit 24 (Power of Attorney) is included.
• Timeliness: filing shows report dated Feb 18 for a Feb 15 transaction; no late filing flag is indicated in the excerpt.

Context

• Code F transactions are routine tax-withholding actions when executives exercise options or receive awards; the company retains or cancels shares to cover tax obligations. This is operational (to satisfy taxes), not an open-market sale signaling a trading decision. For retail investors, such withholdings are common and generally not treated as a directional insider buy/sell signal.