Insider Transactions last 24 months for CoStar Group, Inc. - NSDQ: CSGP
Transactions
All
Buy
Sell
Option Exercise
Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Mccarthy Christine M Director 09/09/2025 AA Direct COM 2,973 $0.00 $0.00 2,973 Hill John W Director 09/09/2025 AA Direct COM 3,177 $0.00 $0.00 20,481 Musslewhite Robert W Director 09/09/2025 AA Direct COM 3,121 $0.00 $0.00 18,277 Berisford John L Director 09/09/2025 AA Direct COM 2,973 $0.00 $0.00 2,973 Glaser Rachel C Director 09/09/2025 AA Direct COM 3,143 $0.00 $0.00 3,143 Brunner Angelique G. Director 09/09/2025 AA Direct COM 3,143 $0.00 $0.00 10,166 Sams Louise S Director 09/09/2025 AA Direct COM 3,291 $0.00 $0.00 19,409 Saint Frederick G. President, Marketplaces 08/28/2025 DS Direct COM 25,000 $90.33 $2,258,250.00 293,103 Cann Cynthia Cammett Chief Accounting Officer 08/01/2025 DF Direct COM 719 $95.19 $68,441.61 25,052 Saint Frederick G. President, Marketplaces 08/01/2025 DF Direct COM 1,436 $95.19 $136,692.84 318,103 Cann Cynthia Cammett Chief Accounting Officer 07/28/2025 DS Direct COM 2,033 $92.85 $188,764.05 25,771 Saint Frederick G. President, Marketplaces 07/28/2025 DS Direct COM 25,000 $93.23 $2,330,750.00 319,539 Lown Christian M. Chief Financial Officer 07/01/2025 DF Direct COM 4,666 $80.40 $375,146.40 130,157 Cann Cynthia Cammett Chief Accounting Officer 06/15/2025 DF Direct COM 461 $81.16 $37,414.76 27,804 Saint Frederick G. President, Marketplaces 06/11/2025 DS Direct COM 25,000 $81.10 $2,027,500.00 344,539 Ruggles Lisa Senior VP, Global Operations 06/01/2025 DF Direct COM 12 $73.56 $882.72 211,201 Simuro Frank Chief Technology Officer 03/15/2025 DF Direct COM 5,700 $78.73 $448,761.00 483,599 Desmarais Michael J Chief Human Resources Officer 03/15/2025 DF Direct COM 3,641 $78.73 $286,655.93 79,118 Boxer Gene General Counsel and Secretary 03/15/2025 DF Direct COM 481 $78.73 $37,869.13 78,572 Cann Cynthia Cammett Chief Accounting Officer 03/15/2025 DF Direct COM 1,191 $78.73 $93,767.43 28,265 Ruggles Lisa Senior VP, Global Operations 03/15/2025 DF Direct COM 1,958 $78.73 $154,153.34 211,213 Cann Cynthia Cammett Chief Accounting Officer 03/10/2025 DS Direct COM 1,749 $79.90 $139,745.10 29,456 Desmarais Michael J Chief Human Resources Officer 03/05/2025 AA Direct COM 9,026 $0.00 $0.00 82,759 Florance Andrew C President and CEO 03/05/2025 AA Direct COM 76,232 $0.00 $0.00 1,672,832 Boxer Gene General Counsel and Secretary 03/05/2025 AA Direct COM 12,492 $0.00 $0.00 79,053
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Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Mccarthy Christine M Director 09/09/2025 AA Direct COM 2,973 $0.00 $0.00 2,973 Hill John W Director 09/09/2025 AA Direct COM 3,177 $0.00 $0.00 20,481 Musslewhite Robert W Director 09/09/2025 AA Direct COM 3,121 $0.00 $0.00 18,277 Berisford John L Director 09/09/2025 AA Direct COM 2,973 $0.00 $0.00 2,973 Glaser Rachel C Director 09/09/2025 AA Direct COM 3,143 $0.00 $0.00 3,143 Brunner Angelique G. Director 09/09/2025 AA Direct COM 3,143 $0.00 $0.00 10,166 Sams Louise S Director 09/09/2025 AA Direct COM 3,291 $0.00 $0.00 19,409 Desmarais Michael J Chief Human Resources Officer 03/05/2025 AA Direct COM 9,026 $0.00 $0.00 82,759 Florance Andrew C President and CEO 03/05/2025 AA Direct COM 76,232 $0.00 $0.00 1,672,832 Boxer Gene General Counsel and Secretary 03/05/2025 AA Direct COM 12,492 $0.00 $0.00 79,053 Cann Cynthia Cammett Chief Accounting Officer 03/05/2025 AA Direct COM 1,498 $0.00 $0.00 33,715 Boxer Gene General Counsel and Secretary 02/27/2025 AA Direct COM 26,897 $0.00 $0.00 70,205 Cann Cynthia Cammett Chief Accounting Officer 02/27/2025 AA Direct COM 4,035 $0.00 $0.00 33,030 Desmarais Michael J Chief Human Resources Officer 02/27/2025 AA Direct COM 18,828 $0.00 $0.00 77,626 Saint Frederick G. President, Marketplaces 02/20/2025 AA Direct COM 97,600 $0.00 $0.00 377,791 Simuro Frank Chief Technology Officer 02/20/2025 AA Direct COM 130,640 $0.00 $0.00 501,731 Ruggles Lisa Senior VP, Global Operations 02/20/2025 AA Direct COM 65,440 $0.00 $0.00 220,581 Florance Andrew C President and CEO 02/20/2025 AA Direct COM 451,440 $0.00 $0.00 1,637,896 Lown Christian M. Chief Financial Officer 02/20/2025 AA Direct COM 97,600 $0.00 $0.00 134,823 Florance Andrew C President and CEO 10/25/2024 AP Direct COM 14,731 $74.67 $1,099,966.01 1,263,098 Nassetta Christopher J Director 07/17/2024 AA Direct COM 3,781 $0.00 $0.00 231,396 Hill John W Director 07/17/2024 AA Direct COM 3,689 $0.00 $0.00 20,234 Kaplan Laura Cox Director 07/17/2024 AA Direct COM 3,452 $0.00 $0.00 17,835 Musslewhite Robert W Director 07/17/2024 AA Direct COM 3,293 $0.00 $0.00 15,156 Sams Louise S Director 07/17/2024 AA Direct COM 3,491 $0.00 $0.00 16,118
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Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Saint Frederick G. President, Marketplaces 08/28/2025 DS Direct COM 25,000 $90.33 $2,258,250.00 293,103 Cann Cynthia Cammett Chief Accounting Officer 08/01/2025 DF Direct COM 719 $95.19 $68,441.61 25,052 Saint Frederick G. President, Marketplaces 08/01/2025 DF Direct COM 1,436 $95.19 $136,692.84 318,103 Cann Cynthia Cammett Chief Accounting Officer 07/28/2025 DS Direct COM 2,033 $92.85 $188,764.05 25,771 Saint Frederick G. President, Marketplaces 07/28/2025 DS Direct COM 25,000 $93.23 $2,330,750.00 319,539 Lown Christian M. Chief Financial Officer 07/01/2025 DF Direct COM 4,666 $80.40 $375,146.40 130,157 Cann Cynthia Cammett Chief Accounting Officer 06/15/2025 DF Direct COM 461 $81.16 $37,414.76 27,804 Saint Frederick G. President, Marketplaces 06/11/2025 DS Direct COM 25,000 $81.10 $2,027,500.00 344,539 Ruggles Lisa Senior VP, Global Operations 06/01/2025 DF Direct COM 12 $73.56 $882.72 211,201 Simuro Frank Chief Technology Officer 03/15/2025 DF Direct COM 5,700 $78.73 $448,761.00 483,599 Desmarais Michael J Chief Human Resources Officer 03/15/2025 DF Direct COM 3,641 $78.73 $286,655.93 79,118 Boxer Gene General Counsel and Secretary 03/15/2025 DF Direct COM 481 $78.73 $37,869.13 78,572 Cann Cynthia Cammett Chief Accounting Officer 03/15/2025 DF Direct COM 1,191 $78.73 $93,767.43 28,265 Ruggles Lisa Senior VP, Global Operations 03/15/2025 DF Direct COM 1,958 $78.73 $154,153.34 211,213 Cann Cynthia Cammett Chief Accounting Officer 03/10/2025 DS Direct COM 1,749 $79.90 $139,745.10 29,456 Simuro Frank Chief Technology Officer 03/01/2025 DF Direct COM 12,432 $76.25 $947,940.00 489,299 Florance Andrew C President and CEO 03/01/2025 DF Direct COM 41,296 $76.25 $3,148,820.00 1,596,600 Boxer Gene General Counsel and Secretary 03/01/2025 DF Direct COM 3,644 $76.25 $277,855.00 66,561 Cann Cynthia Cammett Chief Accounting Officer 03/01/2025 DF Direct COM 813 $76.25 $61,991.25 32,217 Saint Frederick G. President, Marketplaces 03/01/2025 DF Direct COM 8,252 $76.25 $629,215.00 369,539 Desmarais Michael J Chief Human Resources Officer 03/01/2025 DF Direct COM 3,893 $76.25 $296,841.25 73,733 Ruggles Lisa Senior VP, Global Operations 03/01/2025 DF Direct COM 7,410 $76.25 $565,012.50 213,171 Saint Frederick G. President, Marketplaces 02/15/2025 DF Direct COM 2,349 $74.06 $173,966.94 293,245 Florance Andrew C President and CEO 02/15/2025 DF Direct COM 14,235 $74.06 $1,054,244.10 1,248,863 Ruggles Lisa Senior VP, Global Operations 02/15/2025 DF Direct COM 3,531 $74.06 $261,505.86 169,074
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Filer's Name
Relationship/
Trans.
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Total Shares Owned
Wheeler Scott T Chief Financial Officer 04/26/2024 AM Direct COM 7,133 $76.78 $547,671.74 426,153 Wheeler Scott T Chief Financial Officer 04/26/2024 AM Direct COM 21,933 $67.29 $1,475,871.57 419,020 Wheeler Scott T Chief Financial Officer 04/26/2024 AM Direct COM 51,000 $66.65 $3,399,150.00 397,087 Wheeler Scott T Chief Financial Officer 04/26/2024 AM Direct COM 42,670 $39.82 $1,699,119.40 346,087
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Transaction Type Key A = Acquired, D = Disposed A = Grant, award or other acquisition pursuant to Rule 16b-3(d)
C = Conversion of derivative security |
D = Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e) |
E = Expiration of short derivative position |
F = Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. |
G = Gift |
H = Expiration (or cancellation) of long derivative position with value received |
I = Discretionary transaction in accordance with Rule 16b-3(f) |
J = Other |
L = Small acquisition under Rule 16a-6 |
M = Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 |
O = Exercise of out-of-the-money derivative security |
P = Open market or private purchase |
S = Open market or private sale |
U = Disposition pursuant to a tender of shares in a change of control transaction |
W = Acquisition or disposition by will or the laws of descent and distribution |
X = Exercise of in-the-money or at-the-money derivative security |
Z = Deposit into or withdrawal from voting trust
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