Rachel Glaser (CSGP) receives 8,262 CoStar restricted shares as award

Rhea-AI Filing Summary

Glaser Rachel C reported acquisition or exercise transactions in this Form 4 filing.

CoStar Group director Rachel C. Glaser reported receiving a restricted stock award of 8,262 shares of common stock as compensation. The shares were granted at no cash cost on June 23, 2026 and increase her direct holdings to 12,419 shares after the award.

The restricted stock will vest in full on the earlier of the first anniversary of the grant date or the date of CoStar Group's 2027 Annual Meeting of Stockholders. This is a routine equity compensation grant and not an open-market purchase or sale.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Glaser Rachel C

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, par value $0.01 per share	8,262	$0.00	--

Holdings After Transaction: Common Stock, par value $0.01 per share — 12,419 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Restricted shares granted: 8,262 shares Shares held after transaction: 12,419 shares Grant price: $0.0000 per share +2 more

5 metrics

Restricted shares granted 8,262 shares Restricted stock award to director on June 23, 2026

Shares held after transaction 12,419 shares Director’s direct common stock holdings following the grant

Grant price $0.0000 per share Equity compensation grant with no cash paid by recipient

Vesting condition Earlier of 1-year anniversary or 2027 annual meeting Restricted stock award vesting terms from Form 4 footnote

Transaction type Grant, award, or other acquisition Transaction code A classified as award acquisition

Key Terms

restricted stock award, vests in full, Annual Meeting of Stockholders, grant, award, or other acquisition

4 terms

restricted stock award financial

"The restricted stock award vests in full on the earlier of either the first anniversary of the grant date..."

A restricted stock award is company shares given to an employee or executive that cannot be sold or fully owned until certain conditions—like staying with the company for a set time or hitting performance targets—are met. Think of it as a gift that only becomes yours after you fulfill specific obligations; for investors, these awards matter because they can increase the total shares outstanding when they vest, reveal how management is being paid and motivated, and create potential selling pressure when restrictions lift.

vests in full financial

"The restricted stock award vests in full on the earlier of either the first anniversary of the grant date..."

Annual Meeting of Stockholders financial

"...or the date of the Company's 2027 Annual Meeting of Stockholders."

grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/24/2026 - 09:14 PM Accepted by SEC EDGAR 06/24/2026 - 09:14 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Glaser Rachel C

(Last) (First) (Middle)

C/O COSTAR GROUP, INC.

1201 WILSON BLVD.

(Street)

ARLINGTON VIRGINIA 22209

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
COSTAR GROUP, INC. [ CSGP ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/23/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.01 per share	06/23/2026		A		8,262(1)	A	$0	12,419	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The restricted stock award vests in full on the earlier of either the first anniversary of the grant date or the date of the Company's 2027 Annual Meeting of Stockholders.

Remarks:

	/s/ Gene Boxer, Attorney-in-Fact	06/24/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did CoStar Group (CSGP) report for Rachel C. Glaser?

CoStar Group reported that director Rachel C. Glaser received a restricted stock award of 8,262 common shares. The grant was made at no cash cost and increased her direct holdings to 12,419 shares following the transaction.

Was the CoStar Group (CSGP) Rachel Glaser transaction a stock purchase or sale?

The transaction was not a market purchase or sale. Rachel Glaser received 8,262 CoStar Group common shares as a restricted stock award, classified as a grant or award acquisition, rather than buying or selling shares in the open market.

How many CoStar Group (CSGP) shares does Rachel C. Glaser hold after this grant?

After the restricted stock award, Rachel C. Glaser directly holds 12,419 CoStar Group common shares. This total reflects the newly granted 8,262 restricted shares added to her prior holdings as reported in the Form 4 filing.

When do Rachel Glaser’s CoStar Group (CSGP) restricted shares vest?

The restricted stock award to Rachel Glaser vests in full on the earlier of two dates: the first anniversary of the June 23, 2026 grant date, or the date of CoStar Group’s 2027 Annual Meeting of Stockholders, according to the Form 4 footnote.

What does a restricted stock award mean for CoStar Group (CSGP) insiders?

A restricted stock award grants shares that typically vest over time or upon conditions. For CoStar Group, Rachel Glaser’s 8,262-share award vests based on time or the 2027 annual meeting, aligning director compensation with long-term shareholder interests without immediate market trading.