CoStar Group

By person

24 insiders · 118 transactions

55.5×

Andrew C. Florance holds 55.5 times base salary in stock. $55.59M of shares against $1.00M in salary for 2025.

Salary from the company's own proxy. The shares are what Andrew C. Florance last reported holding, valued at $30.78, the price Common Stock, par value $0.01 per share was last bought or sold at on the open market here, on 7 Aug 2026.

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

FLORANCE ANDREW C

Founder and CEO

$8.58M (5)

$186.93M (14) scheduled

−$178.35M

1,806,165

0.4457%

$55.59M

+133.2%

Wheeler Scott T

Chief Financial Officer

—

$45.17M (12) scheduled

−$45.17M

304,958

0.0753%

$9.39M

+25.0%

KLEIN MICHAEL R

Director

—

$38.50M (7)

−$38.50M

1,848,592

0.4562%

$56.90M

−23.0%

CARCHEDI FRANCIS

Executive VP, Corp. Dev.

—

$20.86M (5) scheduled

−$20.86M

6,540

0.0016%

$201.30K

−72.7%

Linnington Matthew

Executive VP, Sales

—

$18.78M (9) scheduled

−$18.78M

19,766

0.0049%

$608.40K

−8.1%

SAINT FREDERICK G.

President, Marketplaces

$906.60K (1)

$15.76M (6)

−$14.85M

278,415

0.0687%

$8.57M

+18.5%

Ruggles Lisa

Senior VP, Global Operations

—

$13.23M (5)

−$13.23M

174,915

0.0432%

$5.38M

+18.6%

SIMURO FRANK

Chief Technology Officer

—

$10.74M (2)

−$10.74M

414,491

0.1023%

$12.76M

+38.7%

Hill John W

Director

—

$4.28M (17)

−$4.28M

22,993

0.0057%

$707.72K

−39.4%

Kaplan Laura Cox

Director

—

$1.60M (3)

−$1.60M

17,835

0.0044%

$548.96K

+114.2%

DESMARAIS MICHAEL J

Chief Human Resources Officer

—

$1.50M (6)

−$1.50M

87,725

0.0216%

$2.70M

+87.4%

NASSETTA CHRISTOPHER J

Director

—

$967.73K (7)

−$967.73K

275,715

0.0680%

$8.49M

+3.6%

Cann Cynthia Cammett

Chief Accounting Officer

—

$797.04K (6)

−$797.04K

18,822

0.0046%

$579.34K

−3.9%

Steinberg David Jay

Director

—

$606.90K (1)

−$606.90K

6,456

0.0016%

$198.72K

+10.5%

Sams Louise S

Director

$48.36K (1)

—

+$48.36K

28,671

0.0071%

$882.49K

+1,273%

Glaser Rachel C

Director

$44.94K (1)

—

+$44.94K

12,419

0.0031%

$382.26K

+88,607%

LOWN CHRISTIAN M.

Chief Financial Officer

—

129,653

0.0320%

$3.99M

+3,731%

HABER WARREN H

Director

—

121,049

0.0299%

$3.73M

+1.0%

Glosserman Michael J

Director

—

101,465

0.0250%

$3.12M

+12.9%

Boxer Gene

General Counsel and Secretary

—

95,517

0.0236%

$2.94M

+2,139%

Musslewhite Robert W

Director

—

26,539

0.0065%

$816.87K

+1,278%

Brunner Angelique G.

Director

—

18,428

0.0045%

$567.21K

—

McCarthy Christine M

Director

—

11,585

0.0029%

$356.59K

+3,210%

BERISFORD JOHN L

Director

—

11,235

0.0028%

$345.81K

—

Individual transactions

Insider

Date

Role

Action

Price

Amount

SIMURO FRANK

17 Mar 2023

Chief Technology Officer

Exercised, kept

2,920

$34.21

$99.89K

SIMURO FRANK

17 Mar 2023

Chief Technology Officer

Exercised, kept

4,880

$20.49

$99.99K

SIMURO FRANK

17 Mar 2023

Chief Technology Officer

Exercised, kept

5,470

$18.28

$99.99K

SIMURO FRANK

17 Mar 2023

Chief Technology Officer

Exercised, kept

10,320

$19.37

$199.90K

Wheeler Scott T

29 Feb 2020

Chief Financial Officer

Exercised, kept

3,600

$342.13

$1.23M

FLORANCE ANDREW C

31 Dec 2019

President and CEO

Exercised, kept

547

$182.75

$99.96K

FLORANCE ANDREW C

31 Dec 2019

President and CEO

Exercised, kept

1,032

$193.69

$199.89K

FLORANCE ANDREW C

29 Dec 2016

President and CEO

Exercised, kept

978

$102.16

$99.91K

FLORANCE ANDREW C

29 Dec 2016

President and CEO

Exercised, kept

1,696

$58.95

$99.98K

FLORANCE ANDREW C

29 Dec 2016

President and CEO

Exercised, kept

499

$57.16

$28.52K

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