Insider Transactions last 24 months for CoStar Group, Inc. - NSDQ: CSGP
Transactions
All
Buy
Sell
Option Exercise
Filer's Name
Relationship/ Title
Trans.
Date
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Value
Total Shares Owned
Cann Cynthia Cammett Chief Accounting Officer 03/15/2026 DF Direct COM 1,194 $43.63 $52,094.22 25,148 Ruggles Lisa Senior VP, Global Operations 03/15/2026 DF Direct COM 2,977 $43.63 $129,886.51 174,915 Boxer Gene General Counsel and Secretary 03/15/2026 DF Direct COM 428 $43.63 $18,673.64 95,517 Desmarais Michael J Chief Human Resources Officer 03/15/2026 DF Direct COM 2,873 $43.63 $125,348.99 87,725 Simuro Frank Chief Technology Officer 03/15/2026 DF Direct COM 11,107 $43.63 $484,598.41 414,491 Florance Andrew C President and CEO 03/10/2026 AA Direct COM 124,162 $0.00 $0.00 1,651,435 Cann Cynthia Cammett Chief Accounting Officer 03/10/2026 AA Direct COM 4,374 $0.00 $0.00 26,342 Lown Christian M. Chief Financial Officer 03/10/2026 AA Direct COM 12,268 $0.00 $0.00 135,250 Boxer Gene General Counsel and Secretary 03/10/2026 AA Direct COM 21,920 $0.00 $0.00 95,945 Desmarais Michael J Chief Human Resources Officer 03/10/2026 AA Direct COM 17,676 $0.00 $0.00 90,598 Sams Louise S Director 03/06/2026 AP Direct COM 1,000 $48.36 $48,360.00 20,409 Glaser Rachel C Director 03/02/2026 AP Direct COM 1,000 $44.94 $44,940.00 4,157 Saint Frederick G. President, Marketplaces 03/02/2026 AP Direct COM 20,000 $45.33 $906,600.00 279,851 Florance Andrew C President and CEO 03/01/2026 DF Direct COM 59,593 $44.63 $2,659,635.59 1,527,273 Cann Cynthia Cammett Chief Accounting Officer 03/01/2026 DF Direct COM 1,385 $44.63 $61,812.55 21,968 Saint Frederick G. President, Marketplaces 03/01/2026 DF Direct COM 11,096 $44.63 $495,214.48 259,851 Lown Christian M. Chief Financial Officer 03/01/2026 DF Direct COM 7,175 $44.63 $320,220.25 122,982 Ruggles Lisa Senior VP, Global Operations 03/01/2026 DF Direct COM 8,931 $44.63 $398,590.53 177,892 Boxer Gene General Counsel and Secretary 03/01/2026 DF Direct COM 4,547 $44.63 $202,932.61 74,025 Desmarais Michael J Chief Human Resources Officer 03/01/2026 DF Direct COM 6,353 $44.63 $283,534.39 72,922 Simuro Frank Chief Technology Officer 03/01/2026 DF Direct COM 18,702 $44.63 $834,670.26 425,598 Florance Andrew C President and CEO 02/27/2026 AP Direct COM 55,720 $44.52 $2,480,654.40 1,586,866 Florance Andrew C President and CEO 02/19/2026 DF Direct COM 19,221 $49.07 $943,174.47 1,531,146 Florance Andrew C President and CEO 02/19/2026 DD Direct COM 104,983 $0.00 $0.00 1,550,367 Saint Frederick G. President, Marketplaces 02/19/2026 DF Direct COM 2,149 $49.07 $105,451.43 270,947
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Filer's Name
Relationship/ Title
Trans.
Date
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Value
Total Shares Owned
Florance Andrew C President and CEO 03/10/2026 AA Direct COM 124,162 $0.00 $0.00 1,651,435 Cann Cynthia Cammett Chief Accounting Officer 03/10/2026 AA Direct COM 4,374 $0.00 $0.00 26,342 Lown Christian M. Chief Financial Officer 03/10/2026 AA Direct COM 12,268 $0.00 $0.00 135,250 Boxer Gene General Counsel and Secretary 03/10/2026 AA Direct COM 21,920 $0.00 $0.00 95,945 Desmarais Michael J Chief Human Resources Officer 03/10/2026 AA Direct COM 17,676 $0.00 $0.00 90,598 Sams Louise S Director 03/06/2026 AP Direct COM 1,000 $48.36 $48,360.00 20,409 Glaser Rachel C Director 03/02/2026 AP Direct COM 1,000 $44.94 $44,940.00 4,157 Saint Frederick G. President, Marketplaces 03/02/2026 AP Direct COM 20,000 $45.33 $906,600.00 279,851 Florance Andrew C President and CEO 02/27/2026 AP Direct COM 55,720 $44.52 $2,480,654.40 1,586,866 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
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Filer's Name
Relationship/ Title
Trans.
Date
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Value
Total Shares Owned
Cann Cynthia Cammett Chief Accounting Officer 03/15/2026 DF Direct COM 1,194 $43.63 $52,094.22 25,148 Ruggles Lisa Senior VP, Global Operations 03/15/2026 DF Direct COM 2,977 $43.63 $129,886.51 174,915 Boxer Gene General Counsel and Secretary 03/15/2026 DF Direct COM 428 $43.63 $18,673.64 95,517 Desmarais Michael J Chief Human Resources Officer 03/15/2026 DF Direct COM 2,873 $43.63 $125,348.99 87,725 Simuro Frank Chief Technology Officer 03/15/2026 DF Direct COM 11,107 $43.63 $484,598.41 414,491 Florance Andrew C President and CEO 03/01/2026 DF Direct COM 59,593 $44.63 $2,659,635.59 1,527,273 Cann Cynthia Cammett Chief Accounting Officer 03/01/2026 DF Direct COM 1,385 $44.63 $61,812.55 21,968 Saint Frederick G. President, Marketplaces 03/01/2026 DF Direct COM 11,096 $44.63 $495,214.48 259,851 Lown Christian M. Chief Financial Officer 03/01/2026 DF Direct COM 7,175 $44.63 $320,220.25 122,982 Ruggles Lisa Senior VP, Global Operations 03/01/2026 DF Direct COM 8,931 $44.63 $398,590.53 177,892 Boxer Gene General Counsel and Secretary 03/01/2026 DF Direct COM 4,547 $44.63 $202,932.61 74,025 Desmarais Michael J Chief Human Resources Officer 03/01/2026 DF Direct COM 6,353 $44.63 $283,534.39 72,922 Simuro Frank Chief Technology Officer 03/01/2026 DF Direct COM 18,702 $44.63 $834,670.26 425,598 Florance Andrew C President and CEO 02/19/2026 DF Direct COM 19,221 $49.07 $943,174.47 1,531,146 Florance Andrew C President and CEO 02/19/2026 DD Direct COM 104,983 $0.00 $0.00 1,550,367 Saint Frederick G. President, Marketplaces 02/19/2026 DF Direct COM 2,149 $49.07 $105,451.43 270,947 Saint Frederick G. President, Marketplaces 02/19/2026 DD Direct COM 17,583 $0.00 $0.00 273,096 Ruggles Lisa Senior VP, Global Operations 02/19/2026 DF Direct COM 3,219 $49.07 $157,956.33 186,823 Ruggles Lisa Senior VP, Global Operations 02/19/2026 DD Direct COM 17,583 $0.00 $0.00 190,042 Simuro Frank Chief Technology Officer 02/19/2026 DF Direct COM 4,421 $49.07 $216,938.47 444,300 Simuro Frank Chief Technology Officer 02/19/2026 DD Direct COM 30,727 $0.00 $0.00 448,721 Florance Andrew C President and CEO 02/15/2026 DF Direct COM 17,482 $44.99 $786,515.18 1,655,350 Saint Frederick G. President, Marketplaces 02/15/2026 DF Direct COM 2,424 $44.99 $109,055.76 290,679 Ruggles Lisa Senior VP, Global Operations 02/15/2026 DF Direct COM 3,576 $44.99 $160,884.24 207,625 Simuro Frank Chief Technology Officer 02/15/2026 DF Direct COM 4,151 $44.99 $186,753.49 479,448
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Filer's Name
Relationship/ Title
Trans.
Date
Trans. Type
Ownership Type
Security Type
Shares
Price
Trans.
Value
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
First letter: A = Acquired, D = Disposed
Second letter:
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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