Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| COSTAR GROUP, INC.CSGP · Entity 3416 | Senior VP, Global Operations | March 15, 2026 | March 17, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
COSTAR GROUP, INC.
Report date March 15, 2026 · Filed March 17, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common Stock, par value $0.01 per shareSEC Table I · non-derivative | Direct | 174,915 |
Reported balance
After 2026-03-15 transaction · row 1
1 source rowRow 1 · 2026-03-15 · Tax withholding · Disposed 2,977 · Balance 174,915 F1: On March 13, 2026, the last preceding business day, the closing price of the Company's common stock on Nasdaq was $43.63. |
Filing footnotes · ownership attribution and instrument terms
F1: On March 13, 2026, the last preceding business day, the closing price of the Company's common stock on Nasdaq was $43.63.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| September 02, 2020 Filed Sep 3, 2020 21:03 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | SaleCommon Stock, par value $0.01 per share | 7,596 | $870.00 | $6,608,520.00 |
DisclosureSEC source: 0001057352-20-000101 · wf-form4_159916697705362.xml · nonDerivative · entry 2 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 14,464 F2 · balance_after: Represents all shares of Common Stock owned, consisting of 40 shares of Common Stock and 13,706 shares of Common Stock subject to unvested Restricted Stock grants, 359 shares of Deferred Stock Units and 359 shares of unvested Restricted Stock Units. Read SEC document |
| September 02, 2020 Filed Sep 3, 2020 21:03 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Exercise / conversionCommon Stock, par value $0.01 per share | 4,333 | $342.13 | $1,482,449.29 |
DisclosureSEC source: 0001057352-20-000101 · wf-form4_159916697705362.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 22,060 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · balance_after: Represents all shares of Common Stock owned, consisting of 7,636 shares of Common Stock and 13,706 shares of Common Stock subject to unvested Restricted Stock grants, 359 shares of Deferred Stock Units and 359 shares of unvested Restricted Stock Units. Read SEC document |
| May 27, 2020 Filed May 28, 2020 22:11 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 27 | $663.99 | $17,927.73 |
DisclosureSEC source: 0001057352-20-000082 · wf-form4_159070389217605.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 17,727 F1 · balance_after: Represents all shares of Common Stock owned, consisting of 3,303 shares of Common Stock and 13,706 shares of Common Stock subject to unvested Restricted Stock grants, 359 shares of Deferred Stock Units and 359 shares of unvested Restricted Stock Units. Read SEC document |
| March 31, 2020 Filed Apr 2, 2020 22:13 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 275 | $599.99 | $164,997.25 |
DisclosureSEC source: 0001057352-20-000062 · wf-form4_158586561969430.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 17,754 F1 · balance_after: Represents all shares of Common Stock owned, consisting of 3,269 shares of Common Stock and 13,767 shares of Common Stock subject to unvested Restricted Stock grants, 359 shares of Deferred Stock Units and 359 shares of unvested Restricted Stock Units. Read SEC document |
| March 13, 2020 Filed Mar 16, 2020 20:49 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | GrantCommon Stock, par value $0.01 per share | 152 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001057352-20-000052 · wf-form4_158439174881940.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 18,029 F1 · price: Pursuant to the Management Stock Purchase Plan, all or a portion of the reporting person's annual cash incentive amount was converted to Deferred Stock Units (each equivalent to one share of common stock) at $663.93 per unit, and the Company awarded the reporting person Restricted Stock Units that vest in full after four years for an equal number of shares of common stock. F2 · balance_after: Represents all shares of Common Stock owned, consisting of 2,934 shares of Common Stock and 14,377 shares of Common Stock subject to unvested Restricted Stock grants, 359 shares of Deferred Stock Units and 359 shares of unvested Restricted Stock Units. Read SEC document |
| February 29, 2020 Filed Mar 4, 2020 00:20 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 419 | $667.59 | $279,720.21 |
DisclosureSEC source: 0001057352-20-000044 · wf-form4_158328120661915.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 17,877 F1 · balance_after: Represents all shares of Common Stock owned, consisting of 2,934 shares of Common Stock and 14,377 shares of Common Stock subject to unvested Restricted Stock grants, 283 shares of Deferred Stock Units and 283 shares of unvested Restricted Stock Units. Read SEC document |
| February 15, 2020 Filed Feb 19, 2020 22:49 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 276 | $731.37 | $201,858.12 |
DisclosureSEC source: 0001057352-20-000031 · wf-form4_158215257758138.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 18,296 F1 · balance_after: Represents all shares of Common Stock owned, consisting of 2,253 shares of Common Stock and 15,477 shares of Common Stock subject to unvested Restricted Stock grants, 283 shares of Deferred Stock Units and 283 shares of unvested Restricted Stock Units. Read SEC document |
| February 06, 2020 Filed Feb 10, 2020 22:20 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | GrantOption to Acquire Common Stock · Derivative | 3,300 | $0.00 Strike: $666.52 | $0.00 |
DisclosureSEC source: 0001057352-20-000016 · wf-form4_158137323381940.xml · derivative · entry 2 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 3,300 Underlying: Common Stock · 3,300 shares Expires 2030-02-05 F3 · derivative.exercise_date: The option vests in three equal installments on February 15, 2021, February 15, 2022 and February 15, 2023. Read SEC document |
| February 06, 2020 Filed Feb 10, 2020 22:20 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | GrantCommon Stock, par value $0.01 per share | 4,600 | $0.00 | $0.00 |
DisclosureSEC source: 0001057352-20-000016 · wf-form4_158137323381940.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 18,572 F1 · shares: Includes a grant of 2,200 shares of restricted common stock that vest in three equal installments on February 15, 2021, February 15, 2022 and February 15, 2023, and a grant of 2,400 shares of restricted common stock that vest based upon CoStar Group, Inc.'s achievement of a three-year performance goal. F2 · balance_after: Represents all shares of Common Stock owned, consisting of 1,629 shares of Common Stock and 16,377 shares of Common Stock subject to unvested Restricted Stock grants, 283 shares of Deferred Stock Units and 283 shares of unvested Restricted Stock Units. Read SEC document |
| December 31, 2019 Filed Jan 2, 2020 23:07 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 250 | $596.88 | $149,220.00 |
DisclosureSEC source: 0001057352-20-000008 · wf-form4_157800643558104.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 13,972 F1 · balance_after: Represents all shares of Common Stock owned, consisting of 1,629 shares of Common Stock and 11,777 shares of Common Stock subject to unvested Restricted Stock grants, 283 shares of Deferred Stock Units and 283 shares of unvested Restricted Stock Units. Read SEC document |
| November 01, 2019 Filed Nov 4, 2019 21:14 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | GrantCommon Stock, par value $0.01 per share | 4 | $0.00 | $0.00 |
DisclosureSEC source: 0001057352-19-000098 · wf-form4_157290207023655.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 14,222 F1 · shares: Service award granted by the Company for the reporting person's 20-year anniversary of employment. The closing stock price of the Company's common stock on the trading day of the date of grant was $548.12. F2 · balance_after: Represents all shares of Common Stock owned, consisting of 1,324 shares of Common Stock and 12,332 shares of Common Stock subject to unvested Restricted Stock grants, 283 shares of Deferred Stock Units and 283 shares of unvested Restricted Stock Units. Read SEC document |
| May 28, 2019 Filed May 29, 2019 20:22 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 93 | $514.08 | $47,809.44 |
DisclosureSEC source: 0001057352-19-000054 · wf-form4_155916134068914.xml · nonDerivative · entry 2 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 14,218 F2 · balance_after: Represents all shares of Common Stock owned, consisting of 1,320 shares of Common Stock and 12,332 shares of Common Stock subject to unvested Restricted Stock grants, 283 shares of Deferred Stock Units and 283 shares of unvested Restricted Stock Units. Read SEC document |
| May 27, 2019 Filed May 29, 2019 20:22 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 27 | $514.08 | $13,880.16 |
DisclosureSEC source: 0001057352-19-000054 · wf-form4_155916134068914.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 14,311 F1 · balance_after: Represents all shares of Common Stock owned, consisting of 1,206 shares of Common Stock and 12,539 shares of Common Stock subject to unvested Restricted Stock grants, 283 shares of Deferred Stock Units and 283 shares of unvested Restricted Stock Units. Read SEC document |
| March 31, 2019 Filed Apr 2, 2019 20:36 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 237 | $466.42 | $110,541.54 |
DisclosureSEC source: 0001057352-19-000043 · wf-form4_155423736725714.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 14,338 F1 · balance_after: Represents all shares of Common Stock owned, consisting of 1,172 shares of Common Stock and 12,600 shares of Common Stock subject to unvested Restricted Stock grants, 283 shares of Deferred Stock Units and 283 shares of unvested Restricted Stock Units. Read SEC document |
| March 15, 2019 Filed Mar 19, 2019 22:18 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | GrantCommon Stock, par value $0.01 per share | 566 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001057352-19-000035 · wf-form4_155303388585976.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 14,575 F1 · price: Pursuant to the Management Stock Purchase Plan, all or a portion of the reporting person's annual cash incentive amount was converted to Deferred Stock Units (each equivalent to one share of common stock) at $469.13 per unit, and the Company awarded the reporting person Restricted Stock Units that vest in full after four years for an equal number of shares of common stock. F2 · balance_after: Represents all shares of Common Stock owned, consisting of 799 shares of Common Stock and 13,210 shares of Common Stock subject to unvested Restricted Stock grants, 283 shares of Deferred Stock Units and 283 shares of unvested Restricted Stock Units. Read SEC document |
| March 01, 2019 Filed Mar 4, 2019 23:22 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | SaleCommon Stock, par value $0.01 per share | 1,538 | $466.62 | $717,661.56 |
DisclosureSEC source: 0001057352-19-000025 · wf-form4_155174172973986.xml · nonDerivative · entry 2 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 14,009 F2 · price: Average based on sales prices ranging from $466.34 to $466.98. F3 · balance_after: Represents all shares of Common Stock owned, consisting of 799 shares of Common Stock and 13,210 shares of Common Stock subject to unvested Restricted Stock grants. Read SEC document |
| February 28, 2019 Filed Mar 4, 2019 23:22 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 337 | $454.33 | $153,109.21 |
DisclosureSEC source: 0001057352-19-000025 · wf-form4_155174172973986.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 15,547 F1 · balance_after: Represents all shares of Common Stock owned, consisting of 2,337 shares of Common Stock and 13,210 shares of Common Stock subject to unvested Restricted Stock grants. Read SEC document |
| February 07, 2019 Filed Feb 11, 2019 22:04 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | GrantOption to Acquire Common Stock · Derivative | 3,800 | $0.00 Strike: $398.15 | $0.00 |
DisclosureSEC source: 0001057352-19-000012 · wf-form4_154992267540171.xml · derivative · entry 2 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 3,800 Underlying: Common Stock · 3,800 shares Expires 2029-02-06 F3 · derivative.exercise_date: The option vests in three equal installments on February 15, 2020, February 15, 2021 and February 15, 2022. Read SEC document |
| February 07, 2019 Filed Feb 11, 2019 22:04 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | GrantCommon Stock, par value $0.01 per share | 5,580 | $0.00 | $0.00 |
DisclosureSEC source: 0001057352-19-000012 · wf-form4_154992267540171.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 15,884 F1 · shares: Includes a grant of 2,700 shares of restricted common stock that vest in three equal installments on February 15, 2020, February 15, 2021 and February 15, 2022, and a grant of 2,880 shares of restricted common stock that vest based upon CoStar Group, Inc.'s achievement of a three-year performance goal. F2 · balance_after: Represents all shares of Common Stock owned, consisting of 1,574 shares of Common Stock and 14,310 shares of Common Stock subject to unvested Restricted Stock grants. Read SEC document |
| December 31, 2018 Filed Jan 2, 2019 21:14 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 167 | $337.19 | $56,310.73 |
DisclosureSEC source: 0001057352-19-000002 · wf-form4_154646365687156.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 10,304 F1 · balance_after: Represents all shares of Common Stock owned, consisting of 1,574 shares of Common Stock and 8,730 shares of Common Stock subject to unvested Restricted Stock grants. Read SEC document |
| May 31, 2018 Filed Jun 1, 2018 20:17 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 71 | $380.86 | $27,041.06 |
DisclosureSEC source: 0001057352-18-000072 · wf-form4_152788424516636.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 10,471 F1 · balance_after: Represents all shares of Common Stock owned, consisting of 1,186 shares of Common Stock and 9,285 shares of Common Stock subject to unvested Restricted Stock grants. Read SEC document |
| May 28, 2018 Filed May 30, 2018 20:18 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 62 | $380.84 | $23,612.08 |
DisclosureSEC source: 0001057352-18-000070 · wf-form4_152771152538492.xml · nonDerivative · entry 2 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 10,542 F2 · balance_after: Represents all shares of Common Stock owned, consisting of 1,020 shares of Common Stock and 9,522 shares of Common Stock subject to unvested Restricted Stock grants. Read SEC document |
| May 27, 2018 Filed May 30, 2018 20:18 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 18 | $380.84 | $6,855.12 |
DisclosureSEC source: 0001057352-18-000070 · wf-form4_152771152538492.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 10,604 F1 · balance_after: Represents all shares of Common Stock owned, consisting of 875 shares of Common Stock and 9,729 shares of Common Stock subject to unvested Restricted Stock grants. Read SEC document |
| March 31, 2018 Filed Apr 3, 2018 22:02 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 183 | $362.68 | $66,370.44 |
DisclosureSEC source: 0001057352-18-000055 · wf-form4_152279295664308.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 10,622 F1 · balance_after: Represents all shares of Common Stock owned, consisting of 832 shares of Common Stock and 9,790 shares of Common Stock subject to unvested Restricted Stock grants. Read SEC document |
| February 28, 2018 Filed Mar 1, 2018 21:39 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | GrantOption to Acquire Common Stock · Derivative | 6,500 | $0.00 Strike: $342.13 | $0.00 |
DisclosureSEC source: 0001057352-18-000025 · wf-form4_151994024175772.xml · derivative · entry 2 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 6,500 Underlying: Common Stock · 6,500 shares Expires 2028-02-27 F3 · derivative.exercise_date: The option vests in three equal installments on February 28, 2019, February 29, 2020 and February 28, 2021. Read SEC document |
| February 28, 2018 Filed Mar 1, 2018 21:39 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | GrantCommon Stock, par value $0.01 per share | 5,460 | $0.00 | $0.00 |
DisclosureSEC source: 0001057352-18-000025 · wf-form4_151994024175772.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 10,805 F1 · shares: Includes a grant of 3,300 shares of restricted common stock that vest in three equal installments on February 28, 2019, February 29, 2020 and February 28, 2021, and a grant of 2,160 shares of restricted common stock that vest based upon CoStar Group, Inc.'s achievement of a three-year performance goal. F2 · balance_after: Represents all shares of Common Stock owned, consisting of 405 shares of Common Stock and 10,400 shares of Common Stock subject to unvested Restricted Stock grants. Read SEC document |
| December 31, 2017 Filed Jan 3, 2018 21:25 UTC | COSTAR GROUP, INC. CSGP · Entity 3416 | Tax withholdingCommon Stock, par value $0.01 per share | 185 | $296.95 | $54,935.75 |
DisclosureSEC source: 0001057352-18-000002 · wf-form4_151501470244975.xml · nonDerivative · entry 1 Ruggles Lisa · CIK 0001717178 · Senior VP, Global Research 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,345 F1 · balance_after: Represents all shares of Common Stock owned, consisting of 405 shares of Common Stock and 4,940 shares of Common Stock subject to unvested Restricted Stock grants. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.