CSGP
CoStar Group Inc
NASDAQ: CSGP · REAL ESTATE · REAL ESTATE SERVICES
$34.14
-5.06% today
Updated 2026-04-29
Market cap
$14.47B
P/E ratio
487.71
P/S ratio
4.46x
EPS (TTM)
$0.07
Dividend yield
—
52W range
$33 – $97
Volume
6.4M
CoStar Group Inc (CSGP) Insider transactions
Net insider activity
Net buying (1,174,792 shares)
Buy transactions
41
Sell transactions
59
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-15 | SIMURO, FRANK | Chief Technology Officer | Sale | 11,107 | $43.63 | $484598.41 |
| 2026-03-15 | RUGGLES, LISA | Senior VP, Global Operations | Sale | 2,977 | $43.63 | $129886.51 |
| 2026-03-15 | DESMARAIS, MICHAEL J | Chief Human Resources Officer | Sale | 2,873 | $43.63 | $125348.99 |
| 2026-03-15 | CANN, CYNTHIA CAMMETT | Chief Accounting Officer | Sale | 1,194 | $43.63 | $52094.22 |
| 2026-03-15 | BOXER, GENE | General Counsel and Secretary | Sale | 482 | $43.63 | $21029.66 |
| 2026-03-15 | BOXER, GENE | General Counsel and Secretary | Sale | 428 | $43.63 | $18673.64 |
| 2026-03-10 | LOWN, CHRISTIAN M. | Chief Financial Officer | Buy | 12,268 | — | — |
| 2026-03-10 | FLORANCE, ANDREW C | Director, President and CEO | Buy | 124,162 | — | — |
| 2026-03-10 | DESMARAIS, MICHAEL J | Chief Human Resources Officer | Buy | 17,676 | — | — |
| 2026-03-10 | CANN, CYNTHIA CAMMETT | Chief Accounting Officer | Buy | 4,374 | — | — |
| 2026-03-10 | BOXER, GENE | General Counsel and Secretary | Buy | 21,920 | — | — |
| 2026-03-06 | SAMS, LOUISE S | Director | Buy | 1,000 | $48.36 | $48360.00 |
| 2026-03-02 | SAINT, FREDERICK G. | President, Marketplaces | Buy | 20,000 | $45.33 | $906600.00 |
| 2026-03-02 | GLASER, RACHEL C | Director | Buy | 1,000 | $44.94 | $44940.00 |
| 2026-03-01 | SIMURO, FRANK | Chief Technology Officer | Sale | 18,702 | $44.63 | $834670.26 |
| 2026-03-01 | SAINT, FREDERICK G. | President, Marketplaces | Sale | 11,096 | $44.63 | $495214.48 |
| 2026-03-01 | RUGGLES, LISA | Senior VP, Global Operations | Sale | 8,931 | $44.63 | $398590.53 |
| 2026-03-01 | LOWN, CHRISTIAN M. | Chief Financial Officer | Sale | 7,175 | $44.63 | $320220.25 |
| 2026-03-01 | FLORANCE, ANDREW C | Director, President and CEO | Sale | 59,593 | $44.63 | $2.66M |
| 2026-03-01 | DESMARAIS, MICHAEL J | Chief Human Resources Officer | Sale | 6,353 | $44.63 | $283534.39 |
| 2026-03-01 | CANN, CYNTHIA CAMMETT | Chief Accounting Officer | Sale | 1,385 | $44.63 | $61812.55 |
| 2026-03-01 | BOXER, GENE | General Counsel and Secretary | Sale | 4,547 | $44.63 | $202932.61 |
| 2026-02-27 | SIMURO, FRANK | Chief Technology Officer | Buy | 52,869 | — | — |
| 2026-02-27 | SAINT, FREDERICK G. | President, Marketplaces | Buy | 39,652 | — | — |
| 2026-02-27 | RUGGLES, LISA | Senior VP, Global Operations | Buy | 28,197 | — | — |
| 2026-02-27 | LOWN, CHRISTIAN M. | Chief Financial Officer | Buy | 39,652 | — | — |
| 2026-02-27 | FLORANCE, ANDREW C | Director, President and CEO | Buy | 83,708 | — | — |
| 2026-02-27 | FLORANCE, ANDREW C | Director, President and CEO | Buy | 55,720 | $44.52 | $2.48M |
| 2026-02-27 | DESMARAIS, MICHAEL J | Chief Human Resources Officer | Buy | 17,926 | — | — |
| 2026-02-27 | CANN, CYNTHIA CAMMETT | Chief Accounting Officer | Buy | 6,834 | — | — |
| 2026-02-27 | BOXER, GENE | General Counsel and Secretary | Buy | 26,888 | — | — |
| 2026-02-19 | SIMURO, FRANK | Chief Technology Officer | Sale | 30,727 | — | — |
| 2026-02-19 | SIMURO, FRANK | Chief Technology Officer | Sale | 4,421 | $49.07 | $216938.47 |
| 2026-02-19 | SAINT, FREDERICK G. | President, Marketplaces | Sale | 17,583 | — | — |
| 2026-02-19 | SAINT, FREDERICK G. | President, Marketplaces | Sale | 2,149 | $49.07 | $105451.43 |
| 2026-02-19 | RUGGLES, LISA | Senior VP, Global Operations | Sale | 17,583 | — | — |
| 2026-02-19 | RUGGLES, LISA | Senior VP, Global Operations | Sale | 3,219 | $49.07 | $157956.33 |
| 2026-02-19 | FLORANCE, ANDREW C | Director, President and CEO | Sale | 104,983 | — | — |
| 2026-02-19 | FLORANCE, ANDREW C | Director, President and CEO | Sale | 19,221 | $49.07 | $943174.47 |
| 2026-02-15 | SIMURO, FRANK | Chief Technology Officer | Sale | 4,151 | $44.99 | $186753.49 |
| 2026-02-15 | SAINT, FREDERICK G. | President, Marketplaces | Sale | 2,424 | $44.99 | $109055.76 |
| 2026-02-15 | RUGGLES, LISA | Senior VP, Global Operations | Sale | 3,576 | $44.99 | $160884.24 |
| 2026-02-15 | FLORANCE, ANDREW C | Director, President and CEO | Sale | 17,482 | $44.99 | $786515.18 |
| 2025-11-13 | HILL, JOHN W | Director | Sale | 2,250 | $68.68 | $154530.00 |
| 2025-11-13 | CANN, CYNTHIA CAMMETT | Chief Accounting Officer | Sale | 1,841 | $68.79 | $126642.39 |
| 2025-09-09 | SAMS, LOUISE S | Director | Buy | 3,291 | — | — |
| 2025-09-09 | MUSSLEWHITE, ROBERT W | Director | Buy | 3,121 | — | — |
| 2025-09-09 | MCCARTHY, CHRISTINE M | Director | Buy | 2,973 | — | — |
| 2025-09-09 | HILL, JOHN W | Director | Buy | 3,177 | — | — |
| 2025-09-09 | GLASER, RACHEL C | Director | Buy | 3,143 | — | — |
| 2025-09-09 | BRUNNER, ANGELIQUE G. | Director | Buy | 3,143 | — | — |
| 2025-09-09 | BERISFORD, JOHN L | Director | Buy | 2,973 | — | — |
| 2025-08-28 | SAINT, FREDERICK G. | President, Marketplaces | Sale | 25,000 | $90.33 | $2.26M |
| 2025-08-01 | SAINT, FREDERICK G. | President, Marketplaces | Sale | 1,436 | $95.19 | $136692.84 |
| 2025-08-01 | CANN, CYNTHIA CAMMETT | Chief Accounting Officer | Sale | 719 | $95.19 | $68441.61 |
| 2025-07-28 | SAINT, FREDERICK G. | President, Marketplaces | Sale | 25,000 | $93.23 | $2.33M |
| 2025-07-28 | CANN, CYNTHIA CAMMETT | Chief Accounting Officer | Sale | 2,033 | $92.85 | $188764.05 |
| 2025-07-01 | LOWN, CHRISTIAN M. | Chief Financial Officer | Sale | 4,666 | $80.40 | $375146.40 |
| 2025-06-15 | CANN, CYNTHIA CAMMETT | Chief Accounting Officer | Sale | 461 | $81.16 | $37414.76 |
| 2025-06-11 | SAINT, FREDERICK G. | President, Marketplaces | Sale | 25,000 | $81.10 | $2.03M |
| 2025-06-01 | RUGGLES, LISA | Senior VP, Global Operations | Sale | 12 | $73.56 | $882.72 |
| 2025-03-15 | SIMURO, FRANK | Chief Technology Officer | Sale | 5,700 | $78.73 | $448761.00 |
| 2025-03-15 | RUGGLES, LISA | Senior VP, Global Operations | Sale | 1,958 | $78.73 | $154153.34 |
| 2025-03-15 | DESMARAIS, MICHAEL J | Chief Human Resources Officer | Sale | 3,641 | $78.73 | $286655.93 |
| 2025-03-15 | CANN, CYNTHIA CAMMETT | Chief Accounting Officer | Sale | 1,191 | $78.73 | $93767.43 |
| 2025-03-15 | BOXER, GENE | General Counsel and Secretary | Sale | 481 | $78.73 | $37869.13 |
| 2025-03-10 | CANN, CYNTHIA CAMMETT | Chief Accounting Officer | Sale | 1,749 | $79.90 | $139745.10 |
| 2025-03-05 | FLORANCE, ANDREW C | Director, President and CEO | Buy | 76,232 | — | — |
| 2025-03-05 | DESMARAIS, MICHAEL J | Chief Human Resources Officer | Buy | 9,026 | — | — |
| 2025-03-05 | CANN, CYNTHIA CAMMETT | Chief Accounting Officer | Buy | 1,498 | — | — |
| 2025-03-05 | BOXER, GENE | General Counsel and Secretary | Buy | 12,492 | — | — |
| 2025-03-01 | SIMURO, FRANK | Chief Technology Officer | Sale | 12,432 | $76.25 | $947940.00 |
| 2025-03-01 | SAINT, FREDERICK G. | President, Marketplaces | Sale | 8,252 | $76.25 | $629215.00 |
| 2025-03-01 | RUGGLES, LISA | Senior VP, Global Operations | Sale | 7,410 | $76.25 | $565012.50 |
| 2025-03-01 | FLORANCE, ANDREW C | Director, President and CEO | Sale | 41,296 | $76.25 | $3.15M |
| 2025-03-01 | DESMARAIS, MICHAEL J | Chief Human Resources Officer | Sale | 3,893 | $76.25 | $296841.25 |
| 2025-03-01 | CANN, CYNTHIA CAMMETT | Chief Accounting Officer | Sale | 813 | $76.25 | $61991.25 |
| 2025-03-01 | BOXER, GENE | General Counsel and Secretary | Sale | 3,644 | $76.25 | $277855.00 |
| 2025-02-27 | DESMARAIS, MICHAEL J | Chief Human Resources Officer | Buy | 18,828 | — | — |
| 2025-02-27 | CANN, CYNTHIA CAMMETT | Chief Accounting Officer | Buy | 4,035 | — | — |
| 2025-02-27 | BOXER, GENE | General Counsel and Secretary | Buy | 26,897 | — | — |
| 2025-02-20 | SIMURO, FRANK | Chief Technology Officer | Buy | 33,000 | — | — |
| 2025-02-20 | SIMURO, FRANK | Chief Technology Officer | Buy | 130,640 | — | — |
| 2025-02-20 | SAINT, FREDERICK G. | President, Marketplaces | Buy | 24,600 | — | — |
| 2025-02-20 | SAINT, FREDERICK G. | President, Marketplaces | Buy | 97,600 | — | — |
| 2025-02-20 | RUGGLES, LISA | Senior VP, Global Operations | Buy | 16,500 | — | — |
| 2025-02-20 | RUGGLES, LISA | Senior VP, Global Operations | Buy | 65,440 | — | — |
| 2025-02-20 | LOWN, CHRISTIAN M. | Chief Financial Officer | Buy | 24,600 | — | — |
| 2025-02-20 | LOWN, CHRISTIAN M. | Chief Financial Officer | Buy | 97,600 | — | — |
| 2025-02-20 | FLORANCE, ANDREW C | Director, President and CEO | Buy | 114,000 | — | — |
| 2025-02-20 | FLORANCE, ANDREW C | Director, President and CEO | Buy | 451,440 | — | — |
| 2025-02-15 | SIMURO, FRANK | Chief Technology Officer | Sale | 5,485 | $74.06 | $406219.10 |
| 2025-02-15 | SAINT, FREDERICK G. | President, Marketplaces | Sale | 2,349 | $74.06 | $173966.94 |
| 2025-02-15 | RUGGLES, LISA | Senior VP, Global Operations | Sale | 3,531 | $74.06 | $261505.86 |
| 2025-02-15 | FLORANCE, ANDREW C | Director, President and CEO | Sale | 14,235 | $74.06 | $1.05M |
| 2025-02-13 | SIMURO, FRANK | Chief Technology Officer | Sale | 7,476 | $73.27 | $547766.52 |
| 2025-02-13 | SIMURO, FRANK | Chief Technology Officer | Sale | 6,452 | — | — |
| 2025-02-13 | SAINT, FREDERICK G. | President, Marketplaces | Sale | 6,602 | $73.27 | $483728.54 |
| 2025-02-13 | SAINT, FREDERICK G. | President, Marketplaces | Sale | 6,452 | — | — |
| 2025-02-13 | RUGGLES, LISA | Senior VP, Global Operations | Sale | 7,481 | $73.27 | $548132.87 |