Gene Boxer

CIK: 0001758152

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (44.4%)

Compensation grants

Other (G, F, J, C, D, …)5 (55.6%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

CSGP

COSTAR GROUP, INC.

Officer

Discretionary Trading P&L

Holdings

Transaction History (9 total)

CSGP
COSTAR GROUP, INC.
Mar 15, 2026
Tax Payment(F)
Direct
482 shares at avg. $43.63$21K
CSGP
COSTAR GROUP, INC.
Mar 15, 2026
Tax Payment(F)
Direct
428 shares at avg. $43.63$19K
CSGP
COSTAR GROUP, INC.
Mar 10, 2026
Award(A)
Direct
21.9K shares-
CSGP
COSTAR GROUP, INC.
Mar 1, 2026
Tax Payment(F)
Direct
4.5K shares at avg. $44.63$203K
CSGP
COSTAR GROUP, INC.
Feb 27, 2026
Award(A)
Restricted Stock Units
Direct
26.9K shares-
CSGP
COSTAR GROUP, INC.
Mar 15, 2025
Tax Payment(F)
Direct
481 shares at avg. $78.73$38K
CSGP
COSTAR GROUP, INC.
Mar 5, 2025
Award(A)
Direct
12.5K shares-
CSGP
COSTAR GROUP, INC.
Mar 1, 2025
Tax Payment(F)
Direct
3.6K shares at avg. $76.25$278K
CSGP
COSTAR GROUP, INC.
Feb 27, 2025
Award(A)
Direct
26.9K shares-

		Type	Shares	Price		Ownership
Mar 15, 2026	CSGP COSTAR GROUP, INC.	Tax Payment(F)	482	$43.63	$21,030	Direct
Mar 15, 2026	CSGP COSTAR GROUP, INC.	Tax Payment(F)	428	$43.63	$18,674	Direct
Mar 10, 2026	CSGP COSTAR GROUP, INC.	Award(A)	21,920	-	$0	Direct
Mar 1, 2026	CSGP COSTAR GROUP, INC.	Tax Payment(F)	4,547	$44.63	$202,933	Direct
Feb 27, 2026	CSGP COSTAR GROUP, INC.	Award(A) Restricted Stock Units	26,888	-	-	Direct
Mar 15, 2025	CSGP COSTAR GROUP, INC.	Tax Payment(F)	481	$78.73	$37,869	Direct
Mar 5, 2025	CSGP COSTAR GROUP, INC.	Award(A)	12,492	-	-	Direct
Mar 1, 2025	CSGP COSTAR GROUP, INC.	Tax Payment(F)	3,644	$76.25	$277,855	Direct
Feb 27, 2025	CSGP COSTAR GROUP, INC.	Award(A)	26,897	-	-	Direct

1-9 of 9 transactions

About Boxer Gene

Boxer Gene (SEC CIK 0001758152) files insider reports with the SEC as General Counsel and Secretary of COSTAR GROUP, INC. (CSGP).

Signal8 holds 7 ownership filings by Boxer Gene, all Form 4s, filed between Mar 3, 2025 and Mar 17, 2026. Those filings report 9 transactions, from Feb 27, 2025 to Mar 15, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Boxer Gene's filings is in ARLINGTON, VA.

Recent filings by Boxer Gene

Mar 15, 2026: Tax withholdings of CSGP shares (2 lines, Form 4, code F).
Mar 10, 2026: Grant or award of CSGP shares (Form 4, code A).
Mar 1, 2026: Tax withholding of CSGP shares (Form 4, code F).
Feb 27, 2026: Grant or award of CSGP derivative securities (Form 4, code A).
Mar 15, 2025: Tax withholding of CSGP shares (Form 4, code F).

Other insiders filing for COSTAR GROUP, INC. (CSGP)

Rossmann Robin Jack, Chief Financial Officer
Cann Cynthia Cammett, Chief Accounting Officer
Hill John W, Director
FLORANCE ANDREW C, Founder and CEO
SAINT FREDERICK G., President, Marketplaces
LOWN CHRISTIAN M., Chief Financial Officer

How to read Form 4 transaction codes