# EDGAR Filing Document

**Accession Number:** 0001057352
**File Stem:** 0001057352-26-000048
**Filing Date:** 2026-6
**Character Count:** 21927
**Document Hash:** 408d25101c713fa51c88b2654864fc78
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001057352-26-000048.hdr.sgml**: 20260625

**ACCESSION NUMBER**: 0001057352-26-000048

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 15

**CONFORMED PERIOD OF REPORT**: 20260623

**ITEM INFORMATION**: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

**ITEM INFORMATION**: Submission of Matters to a Vote of Security Holders

**ITEM INFORMATION**: Regulation FD Disclosure

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260625

**DATE AS OF CHANGE**: 20260625

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** COSTAR GROUP, INC.
- **CENTRAL INDEX KEY:** 0001057352
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-BUSINESS SERVICES, NEC [7389]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 522091509
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-24531
- **FILM NUMBER:** 261117872

**BUSINESS ADDRESS:**
- **STREET 1:** 1201 WILSON BLVD.
- **CITY:** ARLINGTON
- **STATE:** VA
- **ZIP:** 22209
- **BUSINESS PHONE:** 2023466500

**MAIL ADDRESS:**
- **STREET 1:** 1201 WILSON BLVD.
- **CITY:** ARLINGTON
- **STATE:** VA
- **ZIP:** 22209

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** COSTAR GROUP INC
- **DATE OF NAME CHANGE:** 19990805

?xml version='1.0' encoding='ASCII'? csgp-20260623

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-K** 

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the**

**Securities Exchange Act of 1934**

Date of Report (Date of earliest event reported): **June 23, 2026**

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| |
|:---|
| **COSTAR GROUP, INC.** |
| (Exact name of registrant as specified in its charter) |

---

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| | | |
|:---|:---|:---|
| **<u>Delaware</u>** | **<u>0-24531</u>** | **<u>52-2091509</u>** |
| (State or other jurisdiction of incorporation or organization) | (Commission File Number) | (I.R.S. Employer Identification No.) |

---

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| | | | | |
|:---|:---|:---|:---|:---|
| | **1201 Wilson Blvd.** | **Arlington,** | **VA** | **22209** |
| (Address of principal executive offices) | (Address of principal executive offices) | (Address of principal executive offices) | (Address of principal executive offices) | (Zip Code) |

---

Registrant's telephone number, including area code: **(202) 346-6500** 

<u>Not Applicable</u> <br> (Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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| | | |
|:---|:---|:---|
| <u>Title of each class</u> | <u>Trading Symbol</u> | <u>Name of each exchange on which registered</u> |
| **Common Stock ($0.01 par value)** | **CSGP** | **Nasdaq Global Select Market** |

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. &nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;☐

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**Item 5.02 &nbsp;&nbsp;&nbsp;&nbsp;Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.**

On June 23, 2026, at the Annual Meeting of Stockholders (the "Annual Meeting") of CoStar Group, Inc. (the "Company" or "our"), the stockholders of the Company, upon the recommendation of the Board of Directors of the Company (the "Board"), approved the CoStar Group, Inc. 2026 Employee Stock Purchase Plan (the "2026 ESPP"), which was approved by the Board on April 27, 2026 and became effective upon stockholder approval at the Annual Meeting. The 2026 ESPP replaces the Company's Second Amended and Restated Employee Stock Purchase Plan (the "2021 ESPP"), and no further shares will be issued pursuant to the 2021 ESPP. The 2026 ESPP authorizes the issuance of 2,500,000 shares of the Company's common stock.

A more detailed description of the material terms of the 2026 ESPP was included in the Company's Definitive Proxy Statement on Schedule 14A (the "Proxy Statement") filed with the Securities and Exchange Commission on April 30, 2026. The foregoing and the summary in the Proxy Statement are not complete summaries of the terms of the 2026 ESPP and are qualified by reference to the text of the 2026 ESPP, which is included as Exhibit 10.1 hereto and is incorporated by reference herein.

**Item 5.07 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Submission of Matters to a Vote of Security Holders.**

The following items, which are more fully described in the Proxy Statement, were submitted to a vote of the stockholders of the Company at the Annual Meeting. The final voting results are as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.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. McCarthy, and Robert W. Musslewhite.

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| | | | | |
|:---|:---|:---|:---|:---|
| **Name** | **Votes For** | **Votes Against** | **Abstentions** | **Broker Non-Votes** |
| Louise S. Sams | 339006366 | 21916539 | 137272 | 9772170 |
| Andrew C. Florance | 359034877 | 1924104 | 101196 | 9772170 |
| John L. Berisford | 354126137 | 6332305 | 601735 | 9772170 |
| Angelique G. Brunner | 354456998 | 6495209 | 107970 | 9772170 |
| Rachel C. Glaser | 357314132 | 2366072 | 1379973 | 9772170 |
| John W. Hill | 353842997 | 6744956 | 472224 | 9772170 |
| Christine M. McCarthy | 357893033 | 1785174 | 1381970 | 9772170 |
| Robert W. Musslewhite | 342052457 | 18894048 | 113672 | 9772170 |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.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:

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| | |
|:---|:---|
| Votes For | 351,556,365 |
| Votes Against | 18,902,666 |
| Abstentions | 373,316 |
| Broker Non-Votes |  |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.The advisory resolution to approve the Company's executive compensation was approved upon the following vote:

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| | |
|:---|:---|
| Votes For | 257,665,608 |
| Votes Against | 103,277,424 |
| Abstentions | 117,145 |
| Broker Non-Votes | 9,772,170 |

---

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. &nbsp;&nbsp;&nbsp;&nbsp;The 2026 ESPP was approved upon the following vote:

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| | |
|:---|:---|
| Votes For | 359,953,752 |
| Votes Against | 779,358 |
| Abstentions | 327,067 |
| Broker Non-Votes | 9,772,170 |

---

**Item 7.01 &nbsp;&nbsp;&nbsp;&nbsp;Regulation FD Disclosure.**

On June 25, 2026, the Company issued a press release (the "Press Release") announcing the voting results from the Annual Meeting. A copy of the Press Release is attached hereto as Exhibit 99.1 and is incorporated by reference herein.

The information contained in this Item 7.01 and the Press Release shall be considered "furnished" and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended, nor shall it be deemed incorporated by reference into any reports or filings with the Securities and Exchange Commission, whether made before or after the date hereof, except as expressly set forth by specific reference in such a filing.

**Item 9.01 &nbsp;&nbsp;&nbsp;&nbsp;Financial Statements and Exhibits.**

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| | |
|:---|:---|
| <u>Exhibit No.</u> | <u>Description</u> |
| [10.1](https://www.sec.gov/ix?doc=/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm#toc903159_62) | [CoStar Group, Inc. 202](https://www.sec.gov/ix?doc=/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm#toc903159_62)[6](https://www.sec.gov/ix?doc=/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm#toc903159_62)[Employee Stock Purchase](https://www.sec.gov/ix?doc=/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm#toc903159_62)[Plan (filed as Appendix B to CoStar Group, Inc.'s Definitive Proxy Statement on Schedule 14A filed April 30, 202](https://www.sec.gov/ix?doc=/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm#toc903159_62)[6](https://www.sec.gov/ix?doc=/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm#toc903159_62)[, File No. 000-](https://www.sec.gov/ix?doc=/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm#toc903159_62)[24531](https://www.sec.gov/ix?doc=/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm#toc903159_62)[, and incorporated herein by reference).](https://www.sec.gov/ix?doc=/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm#toc903159_62) |
| [99.1](finalcsgpagmresultspress.htm) | [CoStar Group, Inc. Press Release dated June 25, 2026.](finalcsgpagmresultspress.htm) |
| 104 | Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101). |

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**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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| | | |
|:---|:---|:---|
| | | COSTAR GROUP, INC. |
| | | By: |
| Date: | June 25, 2026 | /s/ Gene Boxer |
|  |  | Name: Gene Boxer |
|  |  | Title: General Counsel and Corporate Secretary |

---

## Ex-99

![](finalcsgpagmresultspress001.jpg)

Exhibit 99.1 CoStar Group Stockholders Overwhelmingly Reelect Director Nominees and Support Say-on-Pay at Annual Meeting of Stockholders Arlington, VA – June 25, 2026 – CoStar Group, Inc. (NASDAQ: CSGP), a leading provider of online real estate marketplaces, information and analytics, today announced the results of its Annual Meeting of Stockholders (the "Annual Meeting") held on June 23, 2026. Stockholders approved all proposals presented at the meeting, including overwhelming support for all director nominees and approval of the Company's advisory say-on-pay proposal. ""Earlier this year, our Board, including three new directors, unanimously approved our plan to deliver revenue growth and prioritize EBITDA margin expansion. We then communicated our strategic priorities and long-term objectives in face-to-face meetings with over 500 stockholders. The overwhelming stockholder support for our directors reflects their confidence in our strategy and the considerable opportunities ahead for CoStar Group," said Andy Florance, Founder and Chief Executive Officer of CoStar Group. "Our focus remains on delivering exceptional value to the millions of real estate professionals, property owners and consumers who rely on our platforms every day. By continuing to invest in innovation, expand our market-leading platforms and scale transformative technologies such as Homes Ai and Apartments.com Ai, we are helping our clients make better decisions, operate more efficiently and achieve stronger outcomes. As we build on our momentum, we believe that creating greater value for our clients will drive long-term growth and sustainable returns for our stockholders." Results for the Election of Directors Director % Votes For Andrew C. Florance 99.46% Louise S. Sams 93.92% John L. Berisford 98.24% Angelique G. Brunner 98.20% Rachel C. Glaser 99.34% John W. Hill 98.12% Christine M. McCarthy 99.50% Robert W. Musslewhite 94.76% Advisory Vote to Approve Executive Compensation In 2025, CoStar Group's Board Chair and Compensation Committee Chair led the outreach to and engagement with our Top 50 stockholders representing 77% of our outstanding shares regarding governance and executive compensation matters. Following this extensive engagement, our Compensation Committee recommended, and our Board unanimously approved, a redesigned executive compensation program for 2026 featuring more rigorous and quantitative goals, enhanced transparency, and a simplified structure, to further align executive compensation with long-term stockholder value. In 2026, our Board Chair and Compensation Committee Chair also led the continuing engagement with our Top 50 stockholders to explain the new program. As a result, stockholders approved the advisory say-on-pay proposal regarding the compensation of the Company's named executive officers.

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![](finalcsgpagmresultspress002.jpg)

Exhibit 99.1 Proposal % Votes For Advisory Vote to Approve Executive Compensation 71.38% Final voting results for all matters voted on at the Annual Meeting can be found in a Current Report on Form 8-K to be filed with the Securities and Exchange Commission. About CoStar Group CoStar Group (NASDAQ: CSGP), an S&P 500 company, is a global leader in commercial real estate information, analytics, online marketplaces, and 3D digital twin technology. Founded in 1986, CoStar Group is dedicated to digitizing the world's real estate, empowering all people to discover properties, insights, and connections that improve their businesses and lives. CoStar Group's major brands include CoStar, a leading global provider of commercial real estate data, analytics, and news; LoopNet, the most trafficked commercial real estate marketplace; Apartments.com, the leading platform for apartment rentals; Homes.com, the fastest-growing residential real estate marketplace; and Domain, one of Australia's leading property marketplaces. CoStar Group's industry-leading brands also include Matterport, a leading spatial data company whose platform turns buildings into data to make every space more valuable and accessible; STR, a global leader in hospitality data and benchmarking; Ten-X, an online platform for commercial real estate auctions and negotiated bids; and OnTheMarket, a leading residential property portal in the United Kingdom. CoStar Group's websites attracted 131 million average monthly unique visitors in the first quarter of 2026, serving clients around the world. Headquartered in Arlington, Virginia, CoStar Group is committed to transforming the real estate industry through innovative technology and comprehensive market intelligence. From time to time, we plan to utilize our corporate website as a channel of distribution for material company information. For more information, visit CoStarGroup.com. Forward-Looking Statements This press release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, statements about CoStar Group's plans, objectives, expectations, beliefs and intentions and other statements including words such as "hope," "anticipate," "may," "likely," "might," "believe," "expect," "observe," "consider," "think," "intend," "envision," "will," "should," "could," "would," "plan," "target," "goal," "estimate," "predict," "continue," "commit," and "potential" or the negative of these terms or other comparable terminology. Such statements are based upon the current beliefs and expectations of management of CoStar Group and are subject to many risks and uncertainties. Actual results may differ materially from the results anticipated in the forward-looking statements and the assumptions and estimates used as a basis for the forward-looking statements. The following factors, among others, could cause or contribute to such differences: the risks related to artificial intelligence products such as Homes Ai and Apartments.com Ai; our inability to attract and retain new clients; our inability to successfully develop and introduce new or updated online marketplace services, information, and analytics; our inability to compete successfully against existing or future competitors in attracting advertisers and in general; the effects of fluctuations and market cyclicality; the effects of global economic uncertainties and downturns or a downturn or consolidation in the real estate industry; our inability to hire qualified persons for, or retain and continue to develop our sales force, or unproductivity of our sales force; our inability to retain and attract highly capable management and operating personnel; the downward pressure that our internal and external investments may place on our operating margins; our inability to increase brand awareness; our inability to maintain or increase internet traffic to our marketplaces, and the risk that the methods, including Google Analytics, that we use to measure average monthly unique visitors to our portals may misstate the actual number of unique persons who visit our network of mobile applications and websites for a given month or may differ from the methods used by competitors; our inability to attract new advertisers; our inability to successfully identify, finance, integrate, and/or manage costs related to acquisitions; our inability to complete certain strategic transactions if a proposed transaction is subject

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![](finalcsgpagmresultspress003.jpg)

Exhibit 99.1 to review or approval by regulatory authorities pursuant to applicable laws or regulations; our inability to realize the benefits of the acquisitions of Matterport, LLC ("Matterport") and Domain Holdings Australia Pty Limited; the inability of third-party suppliers upon which Matterport relies to fulfill its needs; the effects of cyberattacks and security vulnerabilities, and technical problems or disruptions; the significant costs associated with undertaking a large infrastructure project; our inability to generate increased revenues from our current or future geographic expansion plans; the risks related to acceptance of credit cards and debit cards and facilitation of other customer payments; the effects of climate-related events and other events beyond our control; the effects related to attention to climate-related risks and opportunities; our inability to obtain and maintain accurate, comprehensive, or reliable data; our inability to obtain and maintain stable data feeds, or disruption of our data feeds; our inability to enforce or defend our ownership and use of intellectual property; the effects of use of new and evolving technologies, including artificial intelligence, on our ability to protect our data and intellectual property from misappropriation by third parties; our inability to defend against potential legal liability for collecting, displaying, or distributing information; our inability to obtain or retain listings from real estate brokers, agents, property owners, and apartment property managers; our inability to maintain or establish relationships with third-party listing providers; our inability to comply with the rules and compliance requirements of Multiple Listing Services; the risks related to open source software; the risks related to international operations; the effects of foreign currency exchange rate fluctuations; our indebtedness; the effects of a lowering or withdrawal of the ratings assigned to our debt securities by rating agencies; the effects of any actual or perceived failure to comply with privacy or data protection laws, regulations, or standards; the effects of changes in tax laws, regulations, or fiscal and tax policies; the effects of third-party claims, litigation, regulatory proceedings, or government investigations; the risks related to return on investment; and the risks related to the specific timing, price, and size of repurchases under the Stock Repurchase Program, including that the Stock Repurchase Program may be suspended or discontinued at any time at the Company's discretion. More information about potential factors that could cause results to differ materially from those anticipated in the forward-looking statements include, but are not limited to, those stated in CoStar Group's filings from time to time with the Securities and Exchange Commission (the "SEC"), including in CoStar Group's Annual Reports on Form 10-K and Quarterly Reports on Form 10-Q, each of which is filed with the SEC, including in the "Risk Factors" section of those filings, as well as CoStar Group's other filings with the SEC (including Current Reports on Form 8-K) available at the SEC's website (www.sec.gov). All forward-looking statements are based on information available to CoStar Group on the date hereof, and CoStar Group assumes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by applicable law. Media Contact: Matthew Blocher CoStar Group (202) 346-6775 mblocher@costar.com Investor Relations: Rich Simonelli Head of Investor Relations CoStar Group (973) 896-8184 getrich@costar.com

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