Andrew C. Florance
President and CEO at CoStar Group Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: CoStar Group Inc., 3 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
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CoStar Group Inc. June 23, 202699.5%
-
CoStar Group Inc. June 26, 202599.9%
-
CoStar Group Inc. June 6, 202498.9%
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CoStar Group Inc. June 8, 202398.6%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Aug 4, 2026 | CoStar Group Inc. | Open-market purchase | +83,300 | $29.89 | $2,489,837 |
| May 1, 2026 | CoStar Group Inc. | Open-market purchase | +68,330 | $35.17 | $2,403,166 |
| May 1, 2026 | CoStar Group Inc. | Open-market purchase | +3,100 | $35.82 | $111,042 |
| Mar 10, 2026 | CoStar Group Inc. | Grant or award | +124,162 | — | — |
| Mar 1, 2026 | CoStar Group Inc. | Shares withheld for tax | −59,593 | $44.63 | $2,659,636 |
| Feb 27, 2026 | CoStar Group Inc. | Open-market purchase | +55,720 | $44.52 | $2,480,654 |
| Feb 19, 2026 | CoStar Group Inc. | Sold back to the company | −104,983 | — | — |
| Feb 19, 2026 | CoStar Group Inc. | Shares withheld for tax | −19,221 | $49.07 | $943,174 |
| Feb 15, 2026 | CoStar Group Inc. | Shares withheld for tax | −17,482 | $44.99 | $786,515 |
| Mar 5, 2025 | CoStar Group Inc. | Grant or award | +76,232 | — | — |
| Mar 1, 2025 | CoStar Group Inc. | Shares withheld for tax | −41,296 | $76.25 | $3,148,820 |
| Feb 20, 2025 | CoStar Group Inc. | Grant or award | +451,440 | — | — |
| Feb 15, 2025 | CoStar Group Inc. | Shares withheld for tax | −14,235 | $74.06 | $1,054,244 |
| Feb 13, 2025 | CoStar Group Inc. | Sold back to the company | −28,896 | — | — |
| Feb 13, 2025 | CoStar Group Inc. | Shares withheld for tax | −33,511 | $73.27 | $2,455,351 |
Questions about Andrew C. Florance
What boards is Andrew C. Florance on?
Andrew C. Florance sits on the board of CoStar Group Inc.
What company is Andrew C. Florance the CEO of?
Andrew C. Florance is President and CEO of CoStar Group Inc.
How long has Andrew C. Florance served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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