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CoStar Group, Inc. 2025-2026 Proxy Voting Records

Compiled from SEC Form N-PX filings and CoStar Group, Inc.’s Form 8-K, filed June 25, 2026 (Item 5.07 on EDGAR). Page generated October 14, 2026.

11Reported items
720Asset managers
8,601Fund votes
June 23, 2026Meeting date

Results at a glance

Meeting of June 23, 2026: 11 items on CoStar Group, Inc.’s Form 8-K, filed June 25, 2026: 8 elected · 3 approved.

Material dissent

None.

Material dissent: a director nominee under 80% of the votes cast, say-on-pay under 70%, any other item the board put forward under 80%, or a shareholder proposal with more than 50%, on the company’s own Form 8-K tally. How this is decided

Proxy season: 2023-2024 2024-2025 2025-2026

Explore CoStar Group, Inc. in the interactive database Compare manager voting policies

Official 2025-2026 meeting results reported by CoStar Group, Inc.

These tallies are CoStar Group, Inc.’s own, as disclosed to the U.S. Securities and Exchange Commission on Form 8-K, filed June 25, 2026 (Item 5.07, “Submission of Matters to a Vote of Security Holders”). They cover every share voted at the meeting, not just the funds that file Form N-PX.

CoStar Group, Inc. — official shareholder meeting results, meeting held June 23, 2026
Ballot item	For	Against	Abstain	Withheld	Broker non-votes	Support (of votes cast)	Reported outcome	Voting standard
Elect Director: Louise S. Sams	339,006,366	21,916,539	137,272	--	9,772,170	94%	Elected	—
Elect Director: Andrew C. Florance	359,034,877	1,924,104	101,196	--	9,772,170	99.4%	Elected	—
Elect Director: John L. Berisford	354,126,137	6,332,305	601,735	--	9,772,170	98%	Elected	—
Elect Director: Angelique G. Brunner	354,456,998	6,495,209	107,970	--	9,772,170	98%	Elected	—
Elect Director: Rachel C. Glaser	357,314,132	2,366,072	1,379,973	--	9,772,170	99.3%	Elected	—
Elect Director: John W. Hill	353,842,997	6,744,956	472,224	--	9,772,170	98%	Elected	—
Elect Director: Christine M. McCarthy	357,893,033	1,785,174	1,381,970	--	9,772,170	99.5%	Elected	—
Elect Director: Robert W. Musslewhite	342,052,457	18,894,048	113,672	--	9,772,170	95%	Elected	—
2. Appointment of Ernst & Young LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2026	351,556,365	18,902,666	373,316	--	--	95%	Approved	—
3. Advisory resolution to approve the Company's executive compensation	257,665,608	103,277,424	117,145	--	9,772,170	71%	Approved	—
4. The 2026 ESPP	359,953,752	779,358	327,067	--	9,772,170	99.7%	Approved	—

Source: CoStar Group, Inc., Form 8-K, filed with the SEC on June 25, 2026 — read the filing on EDGAR.

How asset managers voted at the CoStar Group, Inc. 2025-2026 meeting

Each item below shows how the 720 asset managers that disclosed a CoStar Group, Inc. vote in their SEC Form N-PX filings actually voted. Share totals are the shares those managers' funds voted, summed across every fund they report. These are reported items, not a count of the ballot: fund filings describe one ballot item in different words. Two descriptions are shown as one item only on evidence — the same text (or one cut short of the other), the same director nominee, or a match to the same row of CoStar Group, Inc.’s own Form 8-K tally — never because they merely read alike. A description that could not be joined that way is listed on its own, so one ballot item can appear more than once.

1. Elect Director: Andrew C. Florance

Official resultDIRECTOR ELECTIONSReported outcome: Elected

Combines 6 wordings of this item as funds reported it.

99.4% Majority: yes · of votes cast

FOR 99.4%

FOR: 359,034,877AGAINST: 1,924,104

Details: description as filed, official tally, votes by 155 asset managers

Description as filed by funds: Proposal for the election of directors: Andrew C. Florance

CoStar Group, Inc.’s own tally for this item (“Elect Director: Andrew C. Florance”): 359,034,877 for, 1,924,104 against, per its Form 8-K filed June 25, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: Elected, in the filing’s own words: “Each of the following nominees was elected to our Board to serve until the Company's 2027 Annual Meeting of Stockholders or until his or her successor is elected and qualified: Louise S. Sams, Andrew C. Florance, John L. Berisford, Angelique G. Brunner, Rachel C. Glaser, John W. Hill, Christine M. …”
Support: 99.4% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 155 asset managers below reported 206,998,592 for, 72,620 against, 13,767 abstained, 544 not voted.

FOR

FOR: 206,998,592AGAINST: 72,620ABSTAIN: 13,767NOT VOTED: 544

Largest asset managers voting on “Proposal for the election of directors: Andrew C. Florance” at CoStar Group, Inc., 2025-2026
Asset manager	For	Against	Vote
Vanguard	72,508,671	23	For
Capital Group	15,324,489	0	For
Invesco	14,954,552	0	For
BlackRock	14,410,606	72,518	For
Fidelity	13,796,343	0	For
BARON SELECT FUNDS	10,613,353	0	For
Principal	10,189,327	0	For
PROFESSIONALLY MANAGED PORTFOLIOS	6,835,821	0	For
JANUS INVESTMENT FUND	5,532,268	0	For
State Street	5,256,063	0	For
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	4,462,511	0	For
AMCAP FUND	3,901,295	0	For
VanEck ETF Trust	3,161,005	0	For
Charles Schwab	2,786,149	0	For
FundVantage Trust	2,057,014	0	For
Waddell & Reed	1,651,887	0	For
MFS	1,316,981	0	For
Federated Hermes	1,297,915	0	For
TIAA	1,147,077	0	For
Equitable	860,957	0	For
Transamerica	836,070	0	For
First Trust	824,489	0	For
Lincoln Financial	739,265	0	For
Jackson National	670,084	0	For
Manager Directed Portfolios	652,702	0	For

Showing the 25 largest of 155 asset managers. See all 155 in the interactive database.

2. Elect Director: Angelique G. Brunner

Official resultDIRECTOR ELECTIONSReported outcome: Elected

Combines 6 wordings of this item as funds reported it.

98% Majority: yes · of votes cast

FOR 98%

FOR: 354,456,998AGAINST: 6,495,209

Details: description as filed, official tally, votes by 155 asset managers

Description as filed by funds: Proposal for the election of directors: Angelique G. Brunner

CoStar Group, Inc.’s own tally for this item (“Elect Director: Angelique G. Brunner”): 354,456,998 for, 6,495,209 against, per its Form 8-K filed June 25, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: Elected, in the filing’s own words: “Each of the following nominees was elected to our Board to serve until the Company's 2027 Annual Meeting of Stockholders or until his or her successor is elected and qualified: Louise S. Sams, Andrew C. Florance, John L. Berisford, Angelique G. Brunner, Rachel C. Glaser, John W. Hill, Christine M. …”
Support: 98% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 155 asset managers below reported 203,188,234 for, 3,882,978 against, 13,768 abstained, 544 not voted.

FOR

FOR: 203,188,234AGAINST: 3,882,978ABSTAIN: 13,768NOT VOTED: 544

Largest asset managers voting on “Proposal for the election of directors: Angelique G. Brunner” at CoStar Group, Inc., 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	72,508,627	67	1	For
Capital Group	15,324,489	0	0	For
Invesco	14,954,552	0	0	For
BlackRock	14,483,124	0	0	For
Fidelity	11,223,778	2,572,565	0	Mixed
BARON SELECT FUNDS	10,613,353	0	0	For
Principal	10,189,327	0	0	For
PROFESSIONALLY MANAGED PORTFOLIOS	6,835,821	0	0	For
JANUS INVESTMENT FUND	5,532,268	0	0	For
State Street	5,256,063	0	0	For
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	4,462,511	0	0	For
AMCAP FUND	3,901,295	0	0	For
VanEck ETF Trust	3,161,005	0	0	For
Charles Schwab	2,786,149	0	0	For
FundVantage Trust	2,057,014	0	0	For
Waddell & Reed	1,651,887	0	0	For
MFS	1,316,981	0	0	For
Federated Hermes	0	1,297,915	0	Against
TIAA	1,147,077	0	0	For
Equitable	850,997	9,960	0	For
Transamerica	836,070	0	0	For
First Trust	824,489	0	0	For
Lincoln Financial	739,265	0	0	For
Jackson National	670,084	0	0	For
Manager Directed Portfolios	652,702	0	0	For

Showing the 25 largest of 155 asset managers. See all 155 in the interactive database.

3. Elect Director: Christine M. McCarthy

Official resultDIRECTOR ELECTIONSReported outcome: Elected

Combines 7 wordings of this item as funds reported it.

99.5% Majority: yes · of votes cast

FOR 99.5%

FOR: 357,893,033AGAINST: 1,785,174

Details: description as filed, official tally, votes by 155 asset managers

Description as filed by funds: Proposal for the election of directors: Christine M. McCarthy

CoStar Group, Inc.’s own tally for this item (“Elect Director: Christine M. McCarthy”): 357,893,033 for, 1,785,174 against, per its Form 8-K filed June 25, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: Elected, in the filing’s own words: “Each of the following nominees was elected to our Board to serve until the Company's 2027 Annual Meeting of Stockholders or until his or her successor is elected and qualified: Louise S. Sams, Andrew C. Florance, John L. Berisford, Angelique G. Brunner, Rachel C. Glaser, John W. Hill, Christine M. …”
Support: 99.5% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 155 asset managers below reported 206,952,020 for, 119,174 against, 13,785 abstained, 544 not voted.

FOR

FOR: 206,952,020AGAINST: 119,174ABSTAIN: 13,785NOT VOTED: 544

Largest asset managers voting on “Proposal for the election of directors: Christine M. McCarthy” at CoStar Group, Inc., 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	72,508,658	18	18	For
Capital Group	15,324,489	0	0	For
Invesco	14,954,552	0	0	For
BlackRock	14,483,124	0	0	For
Fidelity	13,796,343	0	0	For
BARON SELECT FUNDS	10,613,353	0	0	For
Principal	10,189,327	0	0	For
PROFESSIONALLY MANAGED PORTFOLIOS	6,835,821	0	0	For
JANUS INVESTMENT FUND	5,532,268	0	0	For
State Street	5,256,063	0	0	For
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	4,462,511	0	0	For
AMCAP FUND	3,901,295	0	0	For
VanEck ETF Trust	3,161,005	0	0	For
Charles Schwab	2,786,149	0	0	For
FundVantage Trust	2,057,014	0	0	For
Waddell & Reed	1,651,887	0	0	For
MFS	1,316,981	0	0	For
Federated Hermes	1,297,915	0	0	For
TIAA	1,147,077	0	0	For
Equitable	860,957	0	0	For
Transamerica	836,070	0	0	For
First Trust	824,489	0	0	For
Lincoln Financial	739,265	0	0	For
Jackson National	670,084	0	0	For
Manager Directed Portfolios	652,702	0	0	For

Showing the 25 largest of 155 asset managers. See all 155 in the interactive database.

4. Elect Director: John L. Berisford

Official resultDIRECTOR ELECTIONSReported outcome: Elected

Combines 7 wordings of this item as funds reported it.

98% Majority: yes · of votes cast

FOR 98%

FOR: 354,126,137AGAINST: 6,332,305

Details: description as filed, official tally, votes by 155 asset managers

Description as filed by funds: Proposal for the election of directors: John L. Berisford

CoStar Group, Inc.’s own tally for this item (“Elect Director: John L. Berisford”): 354,126,137 for, 6,332,305 against, per its Form 8-K filed June 25, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: Elected, in the filing’s own words: “Each of the following nominees was elected to our Board to serve until the Company's 2027 Annual Meeting of Stockholders or until his or her successor is elected and qualified: Louise S. Sams, Andrew C. Florance, John L. Berisford, Angelique G. Brunner, Rachel C. Glaser, John W. Hill, Christine M. …”
Support: 98% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 155 asset managers below reported 203,188,231 for, 3,882,974 against, 13,774 abstained, 544 not voted.

FOR

FOR: 203,188,231AGAINST: 3,882,974ABSTAIN: 13,774NOT VOTED: 544

Largest asset managers voting on “Proposal for the election of directors: John L. Berisford” at CoStar Group, Inc., 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	72,508,624	63	7	For
Capital Group	15,324,489	0	0	For
Invesco	14,954,552	0	0	For
BlackRock	14,483,124	0	0	For
Fidelity	11,223,778	2,572,565	0	Mixed
BARON SELECT FUNDS	10,613,353	0	0	For
Principal	10,189,327	0	0	For
PROFESSIONALLY MANAGED PORTFOLIOS	6,835,821	0	0	For
JANUS INVESTMENT FUND	5,532,268	0	0	For
State Street	5,256,063	0	0	For
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	4,462,511	0	0	For
AMCAP FUND	3,901,295	0	0	For
VanEck ETF Trust	3,161,005	0	0	For
Charles Schwab	2,786,149	0	0	For
FundVantage Trust	2,057,014	0	0	For
Waddell & Reed	1,651,887	0	0	For
MFS	1,316,981	0	0	For
Federated Hermes	0	1,297,915	0	Against
TIAA	1,147,077	0	0	For
Equitable	850,997	9,960	0	For
Transamerica	836,070	0	0	For
First Trust	824,489	0	0	For
Lincoln Financial	739,265	0	0	For
Jackson National	670,084	0	0	For
Manager Directed Portfolios	652,702	0	0	For

Showing the 25 largest of 155 asset managers. See all 155 in the interactive database.

5. Elect Director: John W. Hill

Official resultDIRECTOR ELECTIONSReported outcome: Elected

Combines 6 wordings of this item as funds reported it.

98% Majority: yes · of votes cast

FOR 98%

FOR: 353,842,997AGAINST: 6,744,956

Details: description as filed, official tally, votes by 155 asset managers

Description as filed by funds: Proposal for the election of directors: John W. Hill

CoStar Group, Inc.’s own tally for this item (“Elect Director: John W. Hill”): 353,842,997 for, 6,744,956 against, per its Form 8-K filed June 25, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: Elected, in the filing’s own words: “Each of the following nominees was elected to our Board to serve until the Company's 2027 Annual Meeting of Stockholders or until his or her successor is elected and qualified: Louise S. Sams, Andrew C. Florance, John L. Berisford, Angelique G. Brunner, Rachel C. Glaser, John W. Hill, Christine M. …”
Support: 98% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 155 asset managers below reported 207,053,233 for, 17,974 against, 13,772 abstained, 544 not voted.

FOR

FOR: 207,053,233AGAINST: 17,974ABSTAIN: 13,772NOT VOTED: 544

Largest asset managers voting on “Proposal for the election of directors: John W. Hill” at CoStar Group, Inc., 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	72,508,604	85	5	For
Capital Group	15,324,489	0	0	For
Invesco	14,954,552	0	0	For
BlackRock	14,483,124	0	0	For
Fidelity	13,796,343	0	0	For
BARON SELECT FUNDS	10,613,353	0	0	For
Principal	10,189,327	0	0	For
PROFESSIONALLY MANAGED PORTFOLIOS	6,835,821	0	0	For
JANUS INVESTMENT FUND	5,532,268	0	0	For
State Street	5,256,011	52	0	For
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	4,462,511	0	0	For
AMCAP FUND	3,901,295	0	0	For
VanEck ETF Trust	3,161,005	0	0	For
Charles Schwab	2,786,149	0	0	For
FundVantage Trust	2,057,014	0	0	For
Waddell & Reed	1,651,887	0	0	For
MFS	1,316,981	0	0	For
Federated Hermes	1,297,915	0	0	For
TIAA	1,147,077	0	0	For
Equitable	860,957	0	0	For
Transamerica	836,070	0	0	For
First Trust	824,489	0	0	For
Lincoln Financial	739,265	0	0	For
Jackson National	670,084	0	0	For
Manager Directed Portfolios	652,702	0	0	For

Showing the 25 largest of 155 asset managers. See all 155 in the interactive database.

6. Elect Director: Louise S. Sams

Official resultDIRECTOR ELECTIONSReported outcome: Elected

Combines 6 wordings of this item as funds reported it.

94% Majority: yes · of votes cast

FOR 94%

FOR: 339,006,366AGAINST: 21,916,539

Details: description as filed, official tally, votes by 155 asset managers

Description as filed by funds: Proposal for the election of directors: Louise S. Sams

CoStar Group, Inc.’s own tally for this item (“Elect Director: Louise S. Sams”): 339,006,366 for, 21,916,539 against, per its Form 8-K filed June 25, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: Elected, in the filing’s own words: “Each of the following nominees was elected to our Board to serve until the Company's 2027 Annual Meeting of Stockholders or until his or her successor is elected and qualified: Louise S. Sams, Andrew C. Florance, John L. Berisford, Angelique G. Brunner, Rachel C. Glaser, John W. Hill, Christine M. …”
Support: 94% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 155 asset managers below reported 191,536,876 for, 15,534,333 against, 13,768 abstained, 544 not voted.

FOR

FOR: 191,536,876AGAINST: 15,534,333ABSTAIN: 13,768NOT VOTED: 544

Largest asset managers voting on “Proposal for the election of directors: Louise S. Sams” at CoStar Group, Inc., 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	72,508,611	80	1	For
Capital Group	0	15,324,489	0	Against
Invesco	14,954,552	0	0	For
BlackRock	14,483,124	0	0	For
Fidelity	13,796,343	0	0	For
BARON SELECT FUNDS	10,613,353	0	0	For
Principal	10,189,327	0	0	For
PROFESSIONALLY MANAGED PORTFOLIOS	6,835,821	0	0	For
JANUS INVESTMENT FUND	5,532,268	0	0	For
State Street	5,256,063	0	0	For
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	4,462,511	0	0	For
AMCAP FUND	3,901,295	0	0	For
VanEck ETF Trust	3,161,005	0	0	For
Charles Schwab	2,786,149	0	0	For
FundVantage Trust	2,057,014	0	0	For
Waddell & Reed	1,651,887	0	0	For
MFS	1,316,981	0	0	For
Federated Hermes	1,297,915	0	0	For
TIAA	1,147,077	0	0	For
Equitable	860,957	0	0	For
Transamerica	836,070	0	0	For
First Trust	824,489	0	0	For
Lincoln Financial	739,265	0	0	For
Jackson National	670,084	0	0	For
Manager Directed Portfolios	652,702	0	0	For

Showing the 25 largest of 155 asset managers. See all 155 in the interactive database.

7. Elect Director: Rachel C. Glaser

Official resultDIRECTOR ELECTIONSReported outcome: Elected

Combines 6 wordings of this item as funds reported it.

99.3% Majority: yes · of votes cast

FOR 99.3%

FOR: 357,314,132AGAINST: 2,366,072

Details: description as filed, official tally, votes by 155 asset managers

Description as filed by funds: Proposal for the election of directors: Rachel C. Glaser

CoStar Group, Inc.’s own tally for this item (“Elect Director: Rachel C. Glaser”): 357,314,132 for, 2,366,072 against, per its Form 8-K filed June 25, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: Elected, in the filing’s own words: “Each of the following nominees was elected to our Board to serve until the Company's 2027 Annual Meeting of Stockholders or until his or her successor is elected and qualified: Louise S. Sams, Andrew C. Florance, John L. Berisford, Angelique G. Brunner, Rachel C. Glaser, John W. Hill, Christine M. …”
Support: 99.3% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 155 asset managers below reported 206,952,015 for, 119,179 against, 13,785 abstained, 544 not voted.

FOR

FOR: 206,952,015AGAINST: 119,179ABSTAIN: 13,785NOT VOTED: 544

Largest asset managers voting on “Proposal for the election of directors: Rachel C. Glaser” at CoStar Group, Inc., 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	72,508,653	23	18	For
Capital Group	15,324,489	0	0	For
Invesco	14,954,552	0	0	For
BlackRock	14,483,124	0	0	For
Fidelity	13,796,343	0	0	For
BARON SELECT FUNDS	10,613,353	0	0	For
Principal	10,189,327	0	0	For
PROFESSIONALLY MANAGED PORTFOLIOS	6,835,821	0	0	For
JANUS INVESTMENT FUND	5,532,268	0	0	For
State Street	5,256,063	0	0	For
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	4,462,511	0	0	For
AMCAP FUND	3,901,295	0	0	For
VanEck ETF Trust	3,161,005	0	0	For
Charles Schwab	2,786,149	0	0	For
FundVantage Trust	2,057,014	0	0	For
Waddell & Reed	1,651,887	0	0	For
MFS	1,316,981	0	0	For
Federated Hermes	1,297,915	0	0	For
TIAA	1,147,077	0	0	For
Equitable	860,957	0	0	For
Transamerica	836,070	0	0	For
First Trust	824,489	0	0	For
Lincoln Financial	739,265	0	0	For
Jackson National	670,084	0	0	For
Manager Directed Portfolios	652,702	0	0	For

Showing the 25 largest of 155 asset managers. See all 155 in the interactive database.

8. Elect Director: Robert W. Musslewhite

Official resultDIRECTOR ELECTIONSReported outcome: Elected

Combines 6 wordings of this item as funds reported it.

95% Majority: yes · of votes cast

FOR 95%

FOR: 342,052,457AGAINST: 18,894,048

Details: description as filed, official tally, votes by 155 asset managers

Description as filed by funds: Proposal for the election of directors: Robert W. Musslewhite

CoStar Group, Inc.’s own tally for this item (“Elect Director: Robert W. Musslewhite”): 342,052,457 for, 18,894,048 against, per its Form 8-K filed June 25, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: Elected, in the filing’s own words: “Each of the following nominees was elected to our Board to serve until the Company's 2027 Annual Meeting of Stockholders or until his or her successor is elected and qualified: Louise S. Sams, Andrew C. Florance, John L. Berisford, Angelique G. Brunner, Rachel C. Glaser, John W. Hill, Christine M. …”
Support: 95% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 155 asset managers below reported 200,406,840 for, 6,664,372 against, 13,768 abstained, 544 not voted.

FOR

FOR: 200,406,840AGAINST: 6,664,372ABSTAIN: 13,768NOT VOTED: 544

Largest asset managers voting on “Proposal for the election of directors: Robert W. Musslewhite” at CoStar Group, Inc., 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	72,508,469	225	1	For
Capital Group	15,324,489	0	0	For
Invesco	14,954,552	0	0	For
BlackRock	14,483,124	0	0	For
Fidelity	11,223,778	2,572,565	0	Mixed
BARON SELECT FUNDS	10,613,353	0	0	For
Principal	10,189,327	0	0	For
PROFESSIONALLY MANAGED PORTFOLIOS	6,835,821	0	0	For
JANUS INVESTMENT FUND	5,532,268	0	0	For
State Street	5,256,063	0	0	For
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	4,462,511	0	0	For
AMCAP FUND	3,901,295	0	0	For
VanEck ETF Trust	3,161,005	0	0	For
Charles Schwab	4,913	2,781,236	0	Against
FundVantage Trust	2,057,014	0	0	For
Waddell & Reed	1,651,887	0	0	For
MFS	1,316,981	0	0	For
Federated Hermes	0	1,297,915	0	Against
TIAA	1,147,077	0	0	For
Equitable	850,997	9,960	0	For
Transamerica	836,070	0	0	For
First Trust	824,489	0	0	For
Lincoln Financial	739,265	0	0	For
Jackson National	670,084	0	0	For
Manager Directed Portfolios	652,702	0	0	For

Showing the 25 largest of 155 asset managers. See all 155 in the interactive database.

9. Proposal to approve the CoStar Group, Inc. 2026 Employee Stock Purchase Plan.

No official matchCOMPENSATION

Combines 3 wordings of this item as funds reported it.

99.8% of fund votes cast · no official result

FOR

Details: votes by 155 asset managers

The 155 asset managers below reported 206,552,134 for, 402,609 against, 3 abstained, 544 not voted. The figure above is FOR ÷ (FOR + AGAINST + WITHHELD) of the shares these managers voted; abstained and unvoted shares are in neither half, and these managers are a subset of all shareholders, not the meeting result.

FOR: 206,552,134AGAINST: 402,609ABSTAIN: 3NOT VOTED: 544

Largest asset managers voting on “Proposal to approve the CoStar Group, Inc. 2026 Employee Stock Purchase Plan.” at CoStar Group, Inc., 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	72,508,682	10	3	For
Capital Group	15,324,489	0	0	For
Invesco	14,954,552	0	0	For
BlackRock	14,483,124	0	0	For
Fidelity	13,796,343	0	0	For
BARON SELECT FUNDS	10,613,353	0	0	For
Principal	10,189,327	0	0	For
PROFESSIONALLY MANAGED PORTFOLIOS	6,835,821	0	0	For
JANUS INVESTMENT FUND	5,532,268	0	0	For
State Street	5,256,063	0	0	For
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	4,462,511	0	0	For
AMCAP FUND	3,901,295	0	0	For
VanEck ETF Trust	3,161,005	0	0	For
Charles Schwab	2,786,149	0	0	For
FundVantage Trust	2,057,014	0	0	For
Waddell & Reed	1,651,887	0	0	For
MFS	1,316,981	0	0	For
Federated Hermes	1,297,915	0	0	For
TIAA	1,147,077	0	0	For
Equitable	860,957	0	0	For
Transamerica	836,070	0	0	For
First Trust	824,489	0	0	For
Lincoln Financial	739,265	0	0	For
Jackson National	670,084	0	0	For
Manager Directed Portfolios	652,702	0	0	For

Showing the 25 largest of 155 asset managers. See all 155 in the interactive database.

10. 3. Advisory resolution to approve the Company's executive compensation

Official result Fund totals may overlapSECTION 14A SAY-ON-PAY VOTESReported outcome: Approved

Combines 10 wordings of this item as funds reported it.

71% Approved · of votes cast

FOR 71%AGAINST

FOR: 257,665,608AGAINST: 103,277,424

Details: description as filed, official tally, votes by 702 asset managers

Description as filed by funds: Proposal to approve, on an advisory basis, the Company's executive compensation.

CoStar Group, Inc.’s own tally for this item (“3. Advisory resolution to approve the Company's executive compensation”): 257,665,608 for, 103,277,424 against — passed, per its Form 8-K filed June 25, 2026 (Item 5.07).

Reported outcome: Approved, in the filing’s own words: “The advisory resolution to approve the Company's executive compensation was approved upon the following vote:”
Support: 71% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

Also reported under other wordings, matched to the same row of CoStar Group, Inc.’s official tally and shown with their own fund figures; their managers are not in the figures or the table on this card: “Advisory Vote to Ratify Named Executive Officers' Compensation” (19 managers, Fund and manager reports combined; may count the same shares twice; no share total shown).

Fund voting reports and institutional-manager reports both cover this item. An institutional manager can report shares that a fund it advises also reports, so the two are shown separately below and never added together, and their sum is not shown (fund and manager reports combined may count the same shares twice).

Fund voting reports: 151 asset managers voting on “Proposal to approve, on an advisory basis, the Company's executive compensation.” at CoStar Group, Inc., 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	72,348,473	160,219	1	For
Capital Group	0	15,324,489	0	Against
Invesco	0	14,954,552	0	Against
BlackRock	14,387,456	95,668	0	For
Fidelity	11,223,778	2,572,565	0	Mixed
BARON SELECT FUNDS	10,613,353	0	0	For
Principal	10,189,327	0	0	For
PROFESSIONALLY MANAGED PORTFOLIOS	6,835,821	0	0	For
JANUS INVESTMENT FUND	5,532,268	0	0	For
State Street	2,422	5,253,641	0	Against
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	4,462,511	0	0	For
AMCAP FUND	0	3,901,295	0	Against
VanEck ETF Trust	0	3,161,005	0	Against
Charles Schwab	3,753	2,782,396	0	Against
FundVantage Trust	2,057,014	0	0	For
Waddell & Reed	1,651,887	0	0	For
MFS	1,316,981	0	0	For
Federated Hermes	0	1,297,915	0	Against
TIAA	1,147,077	0	0	For
Equitable	850,997	9,960	0	For
Transamerica	823,859	12,211	0	For
First Trust	824,489	0	0	For
Lincoln Financial	629,000	110,265	0	Mixed
Jackson National	661,369	8,715	0	For
Manager Directed Portfolios	652,702	0	0	For

Fund voting reports, all 151 managers: 154,510,702 for, 52,425,835 against, 13,768 abstained, 544 not voted. Showing the 25 largest; see all in the interactive database.

Institutional-manager reports: 585 asset managers voting on “Proposal to approve, on an advisory basis, the Company's executive compensation.” at CoStar Group, Inc., 2025-2026
Asset manager	For	Against	Vote
Capital Group	333,159	15,678,389	Against
BAMCO INC /NY/	15,890,522	0	For
Invesco	30,467	15,800,987	Against
Janus Henderson	14,981,874	0	For
BlackRock	13,870,920	560,504	For
PRINCIPAL GLOBAL INVESTORS	13,755,708	0	For
GEODE CAPITAL MANAGEMENT, LLC	12,455,596	0	For
POLEN CAPITAL MANAGEMENT LLC	9,851,967	8,198	For
BAILLIE GIFFORD OVERSEAS LTD	6,764,568	0	For
State Street	187,211	6,067,221	Against
Vanguard	4,261,619	0	For
Capital Research Global Investors	0	4,137,443	Against
Amundi	0	3,339,714	Against
BAILLIE GIFFORD & CO LTD	3,311,669	0	For
BNP Paribas Asset Management Holding S.A.	0	3,203,779	Against
VAN ECK ASSOCIATES CORP	0	3,170,329	Against
Charles Schwab	3,753	2,847,666	Against
Meritage Group LP	2,836,582	0	For
Northern Trust	2,747,437	53,391	For
Fidelity	138,463	2,591,530	Mixed
Ensign Peak Advisors, Inc	2,681,424	0	For
AKRE CAPITAL MANAGEMENT LLC	2,319,477	0	For
BECK MACK & OLIVER LLC	2,270,714	0	For
MELLON INVESTMENTS Corp	2,088,861	0	For
CANADA PENSION PLAN INVESTMENT BOARD	2,016,439	0	For

Institutional-manager reports, all 585 managers: 156,696,833 for, 81,313,842 against, 24,764 abstained, 117,637 not voted, 388,948 mixed. Showing the 25 largest; see all in the interactive database.

11. 2. Appointment of Ernst & Young LLP as our independent registered public accounting firm for the fiscal year ending…

Official resultAUDIT-RELATEDReported outcome: Approved

Combines 3 wordings of this item as funds reported it.

95% Approved · of votes cast

FOR 95%

FOR: 351,556,365AGAINST: 18,902,666

Details: description as filed, official tally, votes by 154 asset managers

Description as filed by funds: Proposal to ratify the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for 2026.

CoStar Group, Inc.’s own tally for this item (“2. Appointment of Ernst & Young LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2026”): 351,556,365 for, 18,902,666 against — passed, per its Form 8-K filed June 25, 2026 (Item 5.07).

Reported outcome: Approved, in the filing’s own words: “The appointment of Ernst & Young LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2026 was ratified upon the following vote:”
Support: 95% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 154 asset managers below reported 206,902,962 for, 103,602 against, 13,770 abstained, 544 not voted.

FOR

FOR: 206,902,962AGAINST: 103,602ABSTAIN: 13,770NOT VOTED: 544

Largest asset managers voting on “Proposal to ratify the appointment of Ernst & Young LLP as the Company's independent registered public account” at CoStar Group, Inc., 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	72,451,234	57,458	3	For
Capital Group	15,324,489	0	0	For
Invesco	14,954,552	0	0	For
BlackRock	14,480,299	2,825	0	For
Fidelity	13,796,343	0	0	For
BARON SELECT FUNDS	10,613,353	0	0	For
Principal	10,189,327	0	0	For
PROFESSIONALLY MANAGED PORTFOLIOS	6,835,821	0	0	For
JANUS INVESTMENT FUND	5,532,268	0	0	For
State Street	5,256,011	52	0	For
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	4,462,511	0	0	For
AMCAP FUND	3,901,295	0	0	For
VanEck ETF Trust	3,161,005	0	0	For
Charles Schwab	2,786,149	0	0	For
FundVantage Trust	2,057,014	0	0	For
Waddell & Reed	1,651,887	0	0	For
MFS	1,316,981	0	0	For
Federated Hermes	1,297,915	0	0	For
TIAA	1,147,077	0	0	For
Equitable	860,957	0	0	For
Transamerica	836,070	0	0	For
First Trust	824,489	0	0	For
Lincoln Financial	739,265	0	0	For
Jackson National	670,084	0	0	For
Manager Directed Portfolios	652,702	0	0	For

Showing the 25 largest of 154 asset managers. See all 154 in the interactive database.

Not shown here: this season’s fund filings also report 1 item from the meeting of June 26, 2025, which belongs to the 2024-2025 season. A meeting outside this season’s July 1 to June 30 window is not counted in this page’s items or in its totals of asset managers and fund votes.

Largest CoStar Group, Inc. shareholders voting in 2025-2026

Ranked separately for each type of Form N-PX report. An institutional manager can report shares that a fund it advises also reports, so the two tables can list the same shares and are never added together. Each is ranked by the shares voted on the item that the most managers of that type reported, shown as a share of the 408,355,715 shares outstanding at the time of that meeting.

Fund voting reports: top CoStar Group, Inc. shareholders by shares voted on “Proposal to approve, on an advisory basis, the Company's executive compensation.”, 2025-2026
#	Asset manager	% of shares outstanding
1	Vanguard	17.76%
2	Capital Group	3.75%
3	Invesco	3.66%
4	BlackRock	3.55%
5	Fidelity	3.38%
6	BARON SELECT FUNDS	2.60%
7	Principal	2.50%
8	PROFESSIONALLY MANAGED PORTFOLIOS	1.67%
9	JANUS INVESTMENT FUND	1.35%
10	State Street	1.29%

Institutional-manager reports: top CoStar Group, Inc. shareholders by shares voted on “Proposal to approve, on an advisory basis, the Company's executive compensation.”, 2025-2026
#	Asset manager	% of shares outstanding
1	Capital Group	3.92%
2	BAMCO INC /NY/	3.89%
3	Invesco	3.88%
4	Janus Henderson	3.67%
5	BlackRock	3.53%
6	PRINCIPAL GLOBAL INVESTORS	3.37%
7	GEODE CAPITAL MANAGEMENT, LLC	3.05%
8	POLEN CAPITAL MANAGEMENT LLC	2.41%
9	BAILLIE GIFFORD OVERSEAS LTD	1.66%
10	State Street	1.63%

Reported CoStar Group, Inc. holdings and ownership

As disclosed to the SEC in Form 13F (quarter-end holdings of 30 large managers), Schedules 13D and 13G (beneficial ownership above 5%) and the company’s own proxy statement (DEF 14A). Each row names its form.

CoStar Group, Inc. holdings and ownership disclosed for the 2025-2026 proxy season
Holder	% outstanding	Disclosure
Vanguard Group	17.17%	13F
Vanguard Portfolio Management	9.38%	13G
BlackRock	8.28%	13F
State Street	4.57%	13F
Geode Capital	3.05%	13F
Goldman Sachs	2.27%	13F
Invesco	1.75%	13F
D.E. Shaw	1.45%	13F
Morgan Stanley	1.30%	13F
Northern Trust	0.84%	13F

Percentages above are of 408,355,715 shares outstanding, as reported by CoStar Group, Inc. on its Form 10-Q dated April 27, 2026 (see the filing on EDGAR). This is the count contemporaneous with the 2025-2026 meeting, not today’s. Each holding is as of its own filing, which may be dated before or after the meeting.

About this page

Every figure above is derived from filings made with the US Securities and Exchange Commission: Form N-PX, in which registered funds disclose how they voted every proxy and institutional managers disclose their votes on executive pay (say-on-pay, say-on-frequency and golden parachutes), and Form 8-K Item 5.07, in which the company reports its own meeting results. Shares outstanding are taken from CoStar Group, Inc.’s 10-Q dated April 27, 2026. This page is a static snapshot rebuilt weekly on October 14, 2026; a live search always shows the current data.

At CoStar Group, Inc.'s shareholder meeting held June 23, 2026, in the 2025-2026 proxy season, 720 asset managers reported how they voted in their SEC Form N-PX filings, covering 8,601 separate fund positions. Their filings are grouped here into 11 reported items; because filers word the same ballot item differently, that can be more than the number of items on the ballot. On the most widely held item on that ballot — Proposal to approve, on an advisory basis, the Company's executive compensation. — CoStar Group, Inc.'s filing reports the proposal as approved, with 71% support of the votes cast (FOR divided by FOR plus AGAINST, the conventional basis for proxy support; abstentions, broker non-votes and unvoted shares are excluded because none of them took a side). Source: CoStar Group, Inc.'s Form 8-K, Item 5.07, filed with the U.S. Securities and Exchange Commission on June 25, 2026.

CoStar Group, Inc. proxy season coverage: 2023-2024 · 2024-2025 · 2025-2026 (this page).

Download data (CSV): ballot items · votes by manager · column guide.