CSGP CoStar Group
Nasdaq · SEC CIK 1057352 · EDGAR
- Bought, last 12 months
- $8.48M 6 purchases by 4 insiders
- Sold, last 12 months
- $534.3K 4 sales by 2 insiders
- Filings on record
- 223 since 2021-08-11, latest 2026-08-10 16:06
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| FLORANCE ANDREW C | Pres, CEO, Dir | $7.48M | — |
| SAINT FREDERICK G. | Pres, Marketplaces | $906.6K | — |
| Cann Cynthia Cammett | CAO | — | $274.0K |
| Hill John W | Dir | — | $260.3K |
| Sams Louise S | Dir | $48.4K | — |
| Glaser Rachel C | Dir | $44.9K | — |
| SIMURO FRANK | CTO | — | — |
| DESMARAIS MICHAEL J | CHRO | — | — |
| Boxer Gene | GC, Sec | — | — |
| Brunner Angelique G. | Dir | — | — |
Transactions 284
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-08-10 16:06 | 2026-08-07 | CSGP | Cann Cynthia Cammett | CAO | S - Sale | $30.78 | -4,788 | 18.8K | -20% | -$147.4K | |
| 2026-08-10 16:06 | 2026-08-05 | CSGP | Hill John W | Dir | S - Sale | $30.21 | -3,500 | 23.0K | -13% | -$105.7K | |
| 2026-08-05 09:27 | 2026-08-04 | CSGP | FLORANCE ANDREW C | CEO, Founder, Dir | P - Purchase | $29.89 | +83.3K | 1.81M | +5% | +$2.49M | |
| D | 2026-08-04 17:24 | 2026-08-01 | CSGP | Cann Cynthia Cammett | CAO | F - Tax | $28.76 | -1,077 | 23.6K | -4% | -$31.0K |
| 2026-08-04 17:24 | 2026-08-01 | CSGP | SAINT FREDERICK G. | Pres, Marketplaces | F - Tax | $28.76 | -1,436 | 278.4K | -0.5% | -$41.3K | |
| 2026-07-06 16:05 | 2026-07-01 | CSGP | LOWN CHRISTIAN M. | CFO | F - Tax | $29.36 | -5,597 | 129.7K | -4% | -$164.3K | |
| 2026-06-24 21:14 | 2026-06-23 | CSGP | Glaser Rachel C | Dir | A - Grant | $0.00 | +8,262 | 12.4K | +199% | $0 | |
| 2026-06-24 21:13 | 2026-06-23 | CSGP | BERISFORD JOHN L | Dir | A - Grant | $0.00 | +8,262 | 11.2K | +278% | $0 | |
| 2026-06-24 21:13 | 2026-06-23 | CSGP | Hill John W | Dir | A - Grant | $0.00 | +8,262 | 26.5K | +45% | $0 | |
| 2026-06-24 21:13 | 2026-06-23 | CSGP | Brunner Angelique G. | Dir | A - Grant | $0.00 | +8,262 | 18.4K | +81% | $0 | |
| 2026-06-24 21:13 | 2026-06-23 | CSGP | Musslewhite Robert W | Dir | A - Grant | $0.00 | +8,262 | 26.5K | +45% | $0 | |
| 2026-06-24 21:13 | 2026-06-23 | CSGP | Sams Louise S | Dir | A - Grant | $0.00 | +8,262 | 28.7K | +40% | $0 | |
| 2026-06-24 21:12 | 2026-06-23 | CSGP | McCarthy Christine M | Dir | A - Grant | $0.00 | +8,262 | 11.6K | +249% | $0 | |
| 2026-06-16 17:32 | 2026-06-15 | CSGP | Cann Cynthia Cammett | CAO | F - Tax | $32.04 | -461 | 24.7K | -2% | -$14.8K | |
| M | 2026-05-04 06:01 | 2026-05-01 | CSGP | FLORANCE ANDREW C | Pres, CEO, Dir | P - Purchase | $35.20 | +71.4K | 1.72M | +4% | +$2.51M |
| 2026-03-17 | 2026-03-15 | CSGP | Cann Cynthia Cammett | CAO | F - Tax | $43.63 | -1,194 | 25.1K | -5% | -$52.1K | |
| A | 2026-03-17 | 2026-03-15 | CSGP | Boxer Gene | GC, Sec | F - Tax | $43.63 | -482 | 95.5K | -0.5% | -$21.0K |
| 2026-03-17 | 2026-03-15 | CSGP | Ruggles Lisa | Senior VP, Gbl Ops | F - Tax | $43.63 | -2,977 | 174.9K | -2% | -$129.9K | |
| 2026-03-17 | 2026-03-15 | CSGP | Boxer Gene | GC, Sec | F - Tax | $43.63 | -428 | 95.5K | -0.4% | -$18.7K | |
| 2026-03-17 | 2026-03-15 | CSGP | DESMARAIS MICHAEL J | CHRO | F - Tax | $43.63 | -2,873 | 87.7K | -3% | -$125.3K | |
| 2026-03-17 | 2026-03-15 | CSGP | SIMURO FRANK | CTO | F - Tax | $43.63 | -11.1K | 414.5K | -3% | -$484.6K | |
| 2026-03-11 | 2026-03-10 | CSGP | DESMARAIS MICHAEL J | CHRO | A - Grant | — | +17.7K | 90.6K | +24% | — | |
| 2026-03-11 | 2026-03-10 | CSGP | LOWN CHRISTIAN M. | CFO | A - Grant | — | +12.3K | 135.2K | +10% | — | |
| 2026-03-11 | 2026-03-10 | CSGP | FLORANCE ANDREW C | Pres, CEO, Dir | A - Grant | — | +124.2K | 1.65M | +8% | — | |
| 2026-03-11 | 2026-03-10 | CSGP | Boxer Gene | GC, Sec | A - Grant | — | +21.9K | 95.9K | +30% | — | |
| 2026-03-11 | 2026-03-10 | CSGP | Cann Cynthia Cammett | CAO | A - Grant | — | +4,374 | 26.3K | +20% | — | |
| 2026-03-09 | 2026-03-06 | CSGP | Sams Louise S | Dir | P - Purchase | $48.36 | +1,000 | 20.4K | +5% | +$48.4K | |
| D | 2026-03-03 | 2026-03-01 | CSGP | FLORANCE ANDREW C | Pres, CEO, Dir | F - Tax | $44.63 | -59.6K | 1.53M | -4% | -$2.66M |
| D | 2026-03-03 | 2026-03-01 | CSGP | Ruggles Lisa | Senior VP, Gbl Ops | F - Tax | $44.63 | -8,931 | 177.9K | -5% | -$398.6K |
| D | 2026-03-03 | 2026-03-01 | CSGP | LOWN CHRISTIAN M. | CFO | F - Tax | $44.63 | -7,175 | 123.0K | -6% | -$320.2K |
| D | 2026-03-03 | 2026-03-01 | CSGP | SIMURO FRANK | CTO | F - Tax | $44.63 | -18.7K | 425.6K | -4% | -$834.7K |
| 2026-03-03 | 2026-03-02 | CSGP | SAINT FREDERICK G. | Pres, Marketplaces | P - Purchase | $45.33 | +20.0K | 279.9K | +8% | +$906.6K | |
| 2026-03-03 | 2026-03-01 | CSGP | SAINT FREDERICK G. | Pres, Marketplaces | F - Tax | $44.63 | -11.1K | 259.9K | -4% | -$495.2K | |
| 2026-03-03 | 2026-03-02 | CSGP | Glaser Rachel C | Dir | P - Purchase | $44.94 | +1,000 | 4,157 | +32% | +$44.9K | |
| D | 2026-03-03 | 2026-03-01 | CSGP | DESMARAIS MICHAEL J | CHRO | F - Tax | $44.63 | -6,353 | 72.9K | -8% | -$283.5K |
| D | 2026-03-03 | 2026-03-01 | CSGP | Cann Cynthia Cammett | CAO | F - Tax | $44.63 | -1,385 | 22.0K | -6% | -$61.8K |
| D | 2026-03-03 | 2026-03-01 | CSGP | Boxer Gene | GC, Sec | F - Tax | $44.63 | -4,547 | 74.0K | -6% | -$202.9K |
| 2026-03-02 | 2026-02-27 | CSGP | FLORANCE ANDREW C | Pres, CEO, Dir | P - Purchase | $44.52 | +55.7K | 1.59M | +4% | +$2.48M | |
| 2026-02-23 | 2026-02-19 | CSGP | SAINT FREDERICK G. | Pres, Marketplaces | D - Sale to Iss | $0.00 | -17.6K | 273.1K | -6% | $0 | |
| 2026-02-23 | 2026-02-19 | CSGP | SAINT FREDERICK G. | Pres, Marketplaces | F - Tax | $49.07 | -2,149 | 270.9K | -0.8% | -$105.5K | |
| 2026-02-23 | 2026-02-19 | CSGP | FLORANCE ANDREW C | Pres, CEO, Dir | D - Sale to Iss | $0.00 | -105.0K | 1.55M | -6% | $0 | |
| 2026-02-23 | 2026-02-19 | CSGP | FLORANCE ANDREW C | Pres, CEO, Dir | F - Tax | $49.07 | -19.2K | 1.53M | -1% | -$943.2K | |
| 2026-02-23 | 2026-02-19 | CSGP | SIMURO FRANK | CTO | D - Sale to Iss | $0.00 | -30.7K | 448.7K | -6% | $0 | |
| 2026-02-23 | 2026-02-19 | CSGP | SIMURO FRANK | CTO | F - Tax | $49.07 | -4,421 | 444.3K | -1.0% | -$216.9K | |
| 2026-02-23 | 2026-02-19 | CSGP | Ruggles Lisa | Senior VP, Gbl Ops | F - Tax | $49.07 | -3,219 | 186.8K | -2% | -$158.0K | |
| 2026-02-23 | 2026-02-19 | CSGP | Ruggles Lisa | Senior VP, Gbl Ops | D - Sale to Iss | $0.00 | -17.6K | 190.0K | -8% | $0 | |
| 2026-02-18 | 2026-02-15 | CSGP | SAINT FREDERICK G. | Pres, Marketplaces | F - Tax | $44.99 | -2,424 | 290.7K | -0.8% | -$109.1K | |
| 2026-02-18 | 2026-02-15 | CSGP | FLORANCE ANDREW C | Pres, CEO, Dir | F - Tax | $44.99 | -17.5K | 1.66M | -1% | -$786.5K | |
| 2026-02-18 | 2026-02-15 | CSGP | Ruggles Lisa | Senior VP, Gbl Ops | F - Tax | $44.99 | -3,576 | 207.6K | -2% | -$160.9K | |
| 2026-02-18 | 2026-02-15 | CSGP | SIMURO FRANK | CTO | F - Tax | $44.99 | -4,151 | 479.4K | -0.9% | -$186.8K | |
| 2025-11-17 | 2025-11-13 | CSGP | Hill John W | Dir | S - Sale | $68.68 | -2,250 | 18.2K | -11% | -$154.5K | |
| 2025-11-17 | 2025-11-13 | CSGP | Cann Cynthia Cammett | CAO | S - Sale | $68.79 | -1,841 | 23.2K | -7% | -$126.6K | |
| 2025-09-11 | 2025-09-09 | CSGP | Brunner Angelique G. | Dir | A - Grant | $0.00 | +3,143 | 10.2K | +45% | $0 | |
| 2025-09-11 | 2025-09-09 | CSGP | McCarthy Christine M | Dir | A - Grant | $0.00 | +2,973 | 2,973 | New | $0 | |
| 2025-09-11 | 2025-09-09 | CSGP | BERISFORD JOHN L | Dir | A - Grant | $0.00 | +2,973 | 2,973 | New | $0 | |
| 2025-09-11 | 2025-09-09 | CSGP | Sams Louise S | Dir | A - Grant | $0.00 | +3,291 | 19.4K | +20% | $0 | |
| 2025-09-11 | 2025-09-09 | CSGP | Musslewhite Robert W | Dir | A - Grant | $0.00 | +3,121 | 18.3K | +21% | $0 | |
| 2025-09-11 | 2025-09-09 | CSGP | Glaser Rachel C | Dir | A - Grant | $0.00 | +3,143 | 3,143 | New | $0 | |
| 2025-09-11 | 2025-09-09 | CSGP | Hill John W | Dir | A - Grant | $0.00 | +3,177 | 20.5K | +18% | $0 | |
| 2025-09-02 | 2025-08-28 | CSGP | SAINT FREDERICK G. | Pres, Marketplaces | S - Sale | $90.33 | -25.0K | 293.1K | -8% | -$2.26M | |
| 2025-08-05 | 2025-08-01 | CSGP | SAINT FREDERICK G. | Pres, Marketplaces | F - Tax | $95.19 | -1,436 | 318.1K | -0.4% | -$136.7K | |
| 2025-08-05 | 2025-08-01 | CSGP | Cann Cynthia Cammett | CAO | F - Tax | $95.19 | -719 | 25.1K | -3% | -$68.4K | |
| 2025-07-29 | 2025-07-28 | CSGP | Cann Cynthia Cammett | CAO | S - Sale | $92.85 | -2,033 | 25.8K | -7% | -$188.8K | |
| 2025-07-29 | 2025-07-28 | CSGP | SAINT FREDERICK G. | Pres, Marketplaces | S - Sale | $93.23 | -25.0K | 319.5K | -7% | -$2.33M | |
| 2025-07-02 | 2025-07-01 | CSGP | LOWN CHRISTIAN M. | CFO | F - Tax | $80.40 | -4,666 | 130.2K | -3% | -$375.1K | |
| 2025-06-17 | 2025-06-15 | CSGP | Cann Cynthia Cammett | CAO | F - Tax | $81.16 | -461 | 27.8K | -2% | -$37.4K | |
| 2025-06-12 | 2025-06-11 | CSGP | SAINT FREDERICK G. | Pres, Marketplaces | S - Sale | $81.10 | -25.0K | 344.5K | -7% | -$2.03M | |
| 2025-06-03 | 2025-06-01 | CSGP | Ruggles Lisa | Senior VP, Gbl Ops | F - Tax | $73.56 | -12 | 211.2K | -0.0% | -$882.72 | |
| 2025-03-18 | 2025-03-15 | CSGP | SIMURO FRANK | CTO | F - Tax | $78.73 | -5,700 | 483.6K | -1% | -$448.8K | |
| 2025-03-18 | 2025-03-15 | CSGP | DESMARAIS MICHAEL J | CHRO | F - Tax | $78.73 | -3,641 | 79.1K | -4% | -$286.7K | |
| 2025-03-18 | 2025-03-15 | CSGP | Cann Cynthia Cammett | CAO | F - Tax | $78.73 | -1,191 | 28.3K | -4% | -$93.8K | |
| 2025-03-18 | 2025-03-15 | CSGP | Boxer Gene | GC, Sec | F - Tax | $78.73 | -481 | 78.6K | -0.6% | -$37.9K | |
| 2025-03-18 | 2025-03-15 | CSGP | Ruggles Lisa | Senior VP, Gbl Ops | F - Tax | $78.73 | -1,958 | 211.2K | -0.9% | -$154.2K | |
| M | 2025-03-14 | 2024-07-31+ | CSGP | Cann Cynthia Cammett | CAO | S - Sale | $78.48 | -4,259 | 29.5K | -13% | -$334.3K |
| 2025-03-07 | 2025-03-05 | CSGP | Cann Cynthia Cammett | CAO | A - Grant | — | +1,498 | 33.7K | +5% | — | |
| 2025-03-07 | 2025-03-05 | CSGP | DESMARAIS MICHAEL J | CHRO | A - Grant | — | +9,026 | 82.8K | +12% | — | |
| 2025-03-07 | 2025-03-05 | CSGP | Boxer Gene | GC, Sec | A - Grant | — | +12.5K | 79.1K | +19% | — | |
| 2025-03-07 | 2025-03-05 | CSGP | FLORANCE ANDREW C | Pres, CEO, Dir | A - Grant | — | +76.2K | 1.67M | +5% | — | |
| 2025-03-03 | 2025-03-01 | CSGP | Boxer Gene | GC, Sec | F - Tax | $76.25 | -3,644 | 66.6K | -5% | -$277.9K | |
| 2025-03-03 | 2025-02-27 | CSGP | Boxer Gene | GC, Sec | A - Grant | $0.00 | +26.9K | 70.2K | +62% | $0 | |
| 2025-03-03 | 2025-03-01 | CSGP | FLORANCE ANDREW C | Pres, CEO, Dir | F - Tax | $76.25 | -41.3K | 1.60M | -3% | -$3.15M | |
| 2025-03-03 | 2025-02-27 | CSGP | Cann Cynthia Cammett | CAO | A - Grant | $0.00 | +4,035 | 33.0K | +14% | $0 | |
| 2025-03-03 | 2025-03-01 | CSGP | Cann Cynthia Cammett | CAO | F - Tax | $76.25 | -813 | 32.2K | -2% | -$62.0K | |
| 2025-03-03 | 2025-02-27 | CSGP | DESMARAIS MICHAEL J | CHRO | A - Grant | $0.00 | +18.8K | 77.6K | +32% | $0 | |
| 2025-03-03 | 2025-03-01 | CSGP | DESMARAIS MICHAEL J | CHRO | F - Tax | $76.25 | -3,893 | 73.7K | -5% | -$296.8K | |
| 2025-03-03 | 2025-03-01 | CSGP | SIMURO FRANK | CTO | F - Tax | $76.25 | -12.4K | 489.3K | -2% | -$947.9K | |
| 2025-03-03 | 2025-03-01 | CSGP | Ruggles Lisa | Senior VP, Gbl Ops | F - Tax | $76.25 | -7,410 | 213.2K | -3% | -$565.0K | |
| 2025-03-03 | 2025-03-01 | CSGP | SAINT FREDERICK G. | Pres, Marketplaces | F - Tax | $76.25 | -8,252 | 369.5K | -2% | -$629.2K | |
| D | 2025-02-24 | 2025-02-20 | CSGP | FLORANCE ANDREW C | Pres, CEO, Dir | A - Grant | $0.00 | +451.4K | 1.64M | +38% | $0 |
| D | 2025-02-24 | 2025-02-13 | CSGP | FLORANCE ANDREW C | Pres, CEO, Dir | F - Tax | $73.27 | -33.5K | 1.19M | -3% | -$2.46M |
| D | 2025-02-24 | 2025-02-13 | CSGP | FLORANCE ANDREW C | Pres, CEO, Dir | D - Sale to Iss | $0.00 | -28.9K | 1.22M | -2% | $0 |
| D | 2025-02-24 | 2025-02-20 | CSGP | SIMURO FRANK | CTO | A - Grant | $0.00 | +130.6K | 501.7K | +35% | $0 |
| D | 2025-02-24 | 2025-02-13 | CSGP | SIMURO FRANK | CTO | F - Tax | $73.27 | -7,476 | 371.1K | -2% | -$547.8K |
| D | 2025-02-24 | 2025-02-13 | CSGP | SIMURO FRANK | CTO | D - Sale to Iss | $0.00 | -6,452 | 378.6K | -2% | $0 |
| D | 2025-02-24 | 2025-02-13 | CSGP | Ruggles Lisa | Senior VP, Gbl Ops | D - Sale to Iss | $0.00 | -6,452 | 162.6K | -4% | $0 |
| D | 2025-02-24 | 2025-02-13 | CSGP | Ruggles Lisa | Senior VP, Gbl Ops | F - Tax | $73.27 | -7,481 | 155.1K | -5% | -$548.1K |
| D | 2025-02-24 | 2025-02-20 | CSGP | Ruggles Lisa | Senior VP, Gbl Ops | A - Grant | $0.00 | +65.4K | 220.6K | +42% | $0 |
| D | 2025-02-24 | 2025-02-20 | CSGP | SAINT FREDERICK G. | Pres, Marketplaces | A - Grant | $0.00 | +97.6K | 377.8K | +35% | $0 |
| D | 2025-02-24 | 2025-02-13 | CSGP | SAINT FREDERICK G. | Pres, Marketplaces | D - Sale to Iss | $0.00 | -6,452 | 286.8K | -2% | $0 |
| D | 2025-02-24 | 2025-02-13 | CSGP | SAINT FREDERICK G. | Pres, Marketplaces | F - Tax | $73.27 | -6,602 | 280.2K | -2% | -$483.7K |
Purchase Sale Sale after option exercise All abbreviations