Insider trade

Officer received an award of 18K CSGP shares

Traded Mar 10, 2026 · Filed Mar 11, 2026

CoStar GroupCSGP

18K
Shares

Why it stands out

Compensation award — excluded from discretionary-purchase analysis.

Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell

View the official recordSEC Form 4 — Statement of Changes in Beneficial Ownership

All the details

Dates, kept separate

Transaction date: Mar 10, 2026
Reporting period: Not applicable
Filed with the SEC: Mar 11, 2026

OfficerGrant / award

Context

Classification

grant award

Code A — grant or award

Planned / mechanical clue

Footnote references vesting of compensation awards

Only flagged when a footnote says so; never inferred

Source receipt

Record ID: 0001925959-26-000004
Filed / recorded

Mar 11, 2026, 9:17 PM UTC

Added to OQRO

Oct 2, 2026, 12:27 PM UTC

Parser

form4-xml-v1

Data quality

Verified: identifiers matched exactly

Issuer

COSTAR GROUP, INC.

Issuer CIK

1057352

Ticker

CSGP

Reporting person

Michael J Desmarais

Relationship

Officer

Officer title

Chief Human Resources Officer

Security

Common Stock, par value $0.01 per share

Table

Non-derivative (Table I)

Transaction date

Mar 10, 2026

Transaction code

A

Shares / units

17,676

Acquired / disposed

Acquired (A)

Shares owned after

90,598

Ownership form

Direct

Amendment

No

Footnotes from the filing

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 $46.34 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.