CSGP insider transaction filings
COSTAR GROUP, INC. — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-08-10. Screen CSGP transaction legs live →
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-10 | 4 | Cann Cynthia Cammett — Chief Accounting Officer | Sale (S): 4,788 @ $30.78 | EDGAR |
| 2026-08-10 | 4 | Hill John W — Director | Sale (S): 3,500 @ $30.21 | EDGAR |
| 2026-08-05 | 4 | FLORANCE ANDREW C — Founder and CEO, Director | Purchase (P): 83,300 @ $29.89 | EDGAR |
| 2026-08-04 | 4 | SAINT FREDERICK G. — President, Marketplaces | Tax withholding (F): 1,436 @ $28.76 | EDGAR |
| 2026-08-04 | 4 | Cann Cynthia Cammett — Chief Accounting Officer | Tax withholding (F): 1,077 @ $28.76 · Grant/award (A): 26,078 (derivative) @ $0 | EDGAR |
| 2026-08-04 | 4 | Rossmann Robin Jack — Chief Financial Officer | Grant/award (A): 34,771 (derivative) @ $0 | EDGAR |
| 2026-07-06 | 4 | LOWN CHRISTIAN M. — Chief Financial Officer | Tax withholding (F): 5,597 @ $29.36 | EDGAR |
| 2026-06-24 | 4 | Sams Louise S — Director | Grant/award (A): 8,262 @ $0 | EDGAR |
| 2026-06-24 | 4 | Brunner Angelique G. — Director | Grant/award (A): 8,262 @ $0 | EDGAR |
| 2026-06-24 | 4 | McCarthy Christine M — Director | Grant/award (A): 8,262 @ $0 | EDGAR |
| 2026-06-24 | 4 | Glaser Rachel C — Director | Grant/award (A): 8,262 @ $0 | EDGAR |
| 2026-06-24 | 4 | BERISFORD JOHN L — Director | Grant/award (A): 8,262 @ $0 | EDGAR |
| 2026-06-24 | 4 | Musslewhite Robert W — Director | Grant/award (A): 8,262 @ $0 | EDGAR |
| 2026-06-24 | 4 | Hill John W — Director | Grant/award (A): 8,262 @ $0 | EDGAR |
| 2026-06-16 | 4 | Cann Cynthia Cammett — Chief Accounting Officer | Tax withholding (F): 461 @ $32.04 | EDGAR |
| 2026-05-04 | 4 | FLORANCE ANDREW C — President and CEO, Director | Purchase (P): 68,330 @ $35.17 · Purchase (P): 3,100 @ $35.82 | EDGAR |
| 2026-03-17 | 4 | SIMURO FRANK — Chief Technology Officer | Tax withholding (F): 11,107 @ $43.63 | EDGAR |
| 2026-03-17 | 4 | DESMARAIS MICHAEL J — Chief Human Resources Officer | Tax withholding (F): 2,873 @ $43.63 | EDGAR |
| 2026-03-17 | 4 | Boxer Gene — General Counsel and Secretary | Tax withholding (F): 428 @ $43.63 | EDGAR |
| 2026-03-17 | 4 | Ruggles Lisa — Senior VP, Global Operations | Tax withholding (F): 2,977 @ $43.63 | EDGAR |
| 2026-03-17 | 4 | Cann Cynthia Cammett — Chief Accounting Officer | Tax withholding (F): 1,194 @ $43.63 | EDGAR |
| 2026-03-17 | 4/A | Boxer Gene — General Counsel and Secretary | Tax withholding (F): 482 @ $43.63 | EDGAR |
| 2026-03-11 | 4 | DESMARAIS MICHAEL J — Chief Human Resources Officer | Grant/award (A): 17,676 | EDGAR |
| 2026-03-11 | 4 | Boxer Gene — General Counsel and Secretary | Grant/award (A): 21,920 | EDGAR |
| 2026-03-11 | 4 | LOWN CHRISTIAN M. — Chief Financial Officer | Grant/award (A): 12,268 | EDGAR |
| 2026-03-11 | 4 | Cann Cynthia Cammett — Chief Accounting Officer | Grant/award (A): 4,374 | EDGAR |
| 2026-03-11 | 4 | FLORANCE ANDREW C — President and CEO, Director | Grant/award (A): 124,162 | EDGAR |
| 2026-03-09 | 4 | Sams Louise S — Director | Purchase (P): 1,000 @ $48.36 | EDGAR |
| 2026-03-03 | 4 | SIMURO FRANK — Chief Technology Officer | Tax withholding (F): 18,702 @ $44.63 · Grant/award (A): 52,869 (derivative) @ $0 | EDGAR |
| 2026-03-03 | 4 | DESMARAIS MICHAEL J — Chief Human Resources Officer | Tax withholding (F): 6,353 @ $44.63 · Grant/award (A): 17,926 (derivative) @ $0 | EDGAR |
| 2026-03-03 | 4 | Boxer Gene — General Counsel and Secretary | Tax withholding (F): 4,547 @ $44.63 · Grant/award (A): 26,888 (derivative) @ $0 | EDGAR |
| 2026-03-03 | 4 | Ruggles Lisa — Senior VP, Global Operations | Tax withholding (F): 8,931 @ $44.63 · Grant/award (A): 28,197 (derivative) @ $0 | EDGAR |
| 2026-03-03 | 4 | LOWN CHRISTIAN M. — Chief Financial Officer | Tax withholding (F): 7,175 @ $44.63 · Grant/award (A): 39,652 (derivative) @ $0 | EDGAR |
| 2026-03-03 | 4 | SAINT FREDERICK G. — President, Marketplaces | Grant/award (A): 39,652 (derivative) @ $0 | EDGAR |
| 2026-03-03 | 4 | SAINT FREDERICK G. — President, Marketplaces | Tax withholding (F): 11,096 @ $44.63 · Purchase (P): 20,000 @ $45.33 | EDGAR |
| 2026-03-03 | 4 | Glaser Rachel C — Director | Purchase (P): 1,000 @ $44.94 | EDGAR |
| 2026-03-03 | 4 | Cann Cynthia Cammett — Chief Accounting Officer | Tax withholding (F): 1,385 @ $44.63 · Grant/award (A): 6,834 (derivative) @ $0 | EDGAR |
| 2026-03-03 | 4 | FLORANCE ANDREW C — President and CEO, Director | Tax withholding (F): 59,593 @ $44.63 · Grant/award (A): 83,708 (derivative) @ $0 | EDGAR |
| 2026-03-02 | 4 | FLORANCE ANDREW C — President and CEO, Director | Purchase (P): 55,720 @ $44.52 | EDGAR |
| 2026-02-23 | 4 | SIMURO FRANK — Chief Technology Officer | Disposition to issuer (D): 30,727 @ $0 · Tax withholding (F): 4,421 @ $49.07 | EDGAR |
| 2026-02-23 | 4 | Ruggles Lisa — Senior VP, Global Operations | Disposition to issuer (D): 17,583 @ $0 · Tax withholding (F): 3,219 @ $49.07 | EDGAR |
| 2026-02-23 | 4 | SAINT FREDERICK G. — President, Marketplaces | Disposition to issuer (D): 17,583 @ $0 · Tax withholding (F): 2,149 @ $49.07 | EDGAR |
| 2026-02-23 | 4 | FLORANCE ANDREW C — President and CEO, Director | Disposition to issuer (D): 104,983 @ $0 · Tax withholding (F): 19,221 @ $49.07 | EDGAR |
| 2026-02-18 | 4 | SIMURO FRANK — Chief Technology Officer | Tax withholding (F): 4,151 @ $44.99 | EDGAR |
| 2026-02-18 | 4 | Ruggles Lisa — Senior VP, Global Operations | Tax withholding (F): 3,576 @ $44.99 | EDGAR |
| 2026-02-18 | 4 | SAINT FREDERICK G. — President, Marketplaces | Tax withholding (F): 2,424 @ $44.99 | EDGAR |
| 2026-02-18 | 4 | FLORANCE ANDREW C — President and CEO, Director | Tax withholding (F): 17,482 @ $44.99 | EDGAR |
| 2025-11-17 | 4 | Hill John W — Director | Sale (S): 2,250 @ $68.68 | EDGAR |
| 2025-11-17 | 4 | Cann Cynthia Cammett — Chief Accounting Officer | Sale (S): 1,841 @ $68.79 | EDGAR |
| 2025-09-11 | 4 | Sams Louise S — Director | Grant/award (A): 3,291 @ $0 | EDGAR |
Recent 8-K events — COSTAR GROUP, INC.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-08-21 | 8-K | 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-28 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-13 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-06-25 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 5.07 — Submission of Matters to a Vote of Security Holders 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-29 | 8-K | 1.01 — Entry into a Material Definitive Agreement 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-04-28 | 8-K | 2.02 — Results of Operations and Financial Condition 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-03-16 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 7.01 — Regulation FD Disclosure | EDGAR |
| 2026-02-24 | 8-K | 2.02 — Results of Operations and Financial Condition 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-02-13 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-01-07 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
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