Insider Trading disclosures for Costar Group, Inc.

The latest disclosure was made by Frank Simuro in Costar Group, Inc. where a trade of 5,700 Common Stock, par value $0.01 per share done at an average price of $78.7 was reported to US exchanges on March 15, 2025.

Insider trading is the trading of a company’s securities by individuals with access to confidential or material non-public information about the company. A company is required to report trading by corporate officers, directors, or other company members with significant access to privileged information to the Securities and Exchange Commission (SEC).

Client Name	Client Category	Action	Reported to Exchange	Quantity	Post Transaction Holding	Traded %	Avg. Price	Value	Security Type
Frank Simuro	Chief Technology Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 78.73 per share.	15 Mar 2025	5,700	483,599 (1%)	0%	78.7	448,761	Common Stock, par value $0.01 per share
Cynthia Cammett Cann	Chief Accounting Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 78.73 per share.	15 Mar 2025	1,191	28,265 (0%)	0%	78.7	93,767	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Operations	Payment of exercise price or tax liability using portion of securities received from the company at price $ 78.73 per share.	15 Mar 2025	1,958	211,213 (0%)	0%	78.7	154,153	Common Stock, par value $0.01 per share
Gene Boxer	General Counsel and Secretary	Payment of exercise price or tax liability using portion of securities received from the company at price $ 78.73 per share.	15 Mar 2025	481	78,572 (0%)	0%	78.7	37,869	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 78.73 per share.	15 Mar 2025	3,641	79,118 (0%)	0%	78.7	286,656	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	05 Mar 2025	76,232	1,672,832 (4%)	0%		-	Common Stock, par value $0.01 per share
Gene Boxer	General Counsel and Secretary	Grant, award, or other acquisition of securities at price $ 0.00 per share.	05 Mar 2025	12,492	79,053 (0%)	0%		-	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	05 Mar 2025	9,026	82,759 (0%)	0%		-	Common Stock, par value $0.01 per share
Cynthia Cammett Cann	Chief Accounting Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	05 Mar 2025	1,498	33,715 (0%)	0%		-	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 76.25 per share.	01 Mar 2025	41,296	1,596,600 (4%)	0%	76.3	3,148,820	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 76.25 per share.	01 Mar 2025	12,432	489,299 (1%)	0%	76.3	947,940	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Payment of exercise price or tax liability using portion of securities received from the company at price $ 76.25 per share.	01 Mar 2025	8,252	369,539 (1%)	0%	76.3	629,215	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Operations	Payment of exercise price or tax liability using portion of securities received from the company at price $ 76.25 per share.	01 Mar 2025	7,410	213,171 (0%)	0%	76.3	565,013	Common Stock, par value $0.01 per share
Gene Boxer	General Counsel and Secretary	Grant, award, or other acquisition of securities at price $ 0.00 per share.	27 Feb 2025	26,897	70,205 (0%)	0%		0	Common Stock, par value $0.01 per share
Gene Boxer	General Counsel and Secretary	Payment of exercise price or tax liability using portion of securities received from the company at price $ 76.25 per share.	27 Feb 2025	3,644	66,561 (0%)	0%	76.3	277,855	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 76.25 per share.	27 Feb 2025	3,893	73,733 (0%)	0%	76.2	296,841	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	27 Feb 2025	18,828	77,626 (0%)	0%		0	Common Stock, par value $0.01 per share
Cynthia Cammett Cann	Chief Accounting Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	27 Feb 2025	4,035	33,030 (0%)	0%		0	Common Stock, par value $0.01 per share
Cynthia Cammett Cann	Chief Accounting Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 76.25 per share.	27 Feb 2025	813	32,217 (0%)	0%	76.2	61,991	Common Stock, par value $0.01 per share
Christian L. Lown	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	20 Feb 2025	24,600	24,600	-		-	Option to Acquire Common Stock
Christian L. Lown	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	20 Feb 2025	97,600	134,823 (0%)	0%		0	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 74.06 per share.	15 Feb 2025	14,235	1,248,863 (3%)	0%	74.1	1,054,244	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 74.06 per share.	15 Feb 2025	5,485	385,019 (1%)	0%	74.1	406,219	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Payment of exercise price or tax liability using portion of securities received from the company at price $ 74.06 per share.	15 Feb 2025	2,349	293,245 (0%)	0%	74.1	173,967	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Operations	Payment of exercise price or tax liability using portion of securities received from the company at price $ 74.06 per share.	15 Feb 2025	3,531	169,074 (0%)	0%	74.1	261,506	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 73.27 per share.	13 Feb 2025	33,511	1,186,456 (3%)	0%	73.3	2,455,351	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Feb 2025	114,000	114,000	-		-	Option to Acquire Common Stock
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Feb 2025	451,440	1,637,896 (4%)	1%		0	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Sale or transfer of securities back to the company at price $ 0.00 per share.	13 Feb 2025	28,896	1,219,967 (3%)	0%		0	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Feb 2025	33,000	33,000	-		-	Option to Acquire Common Stock
Frank Simuro	Chief Technology Officer	Sale or transfer of securities back to the company at price $ 0.00 per share.	13 Feb 2025	6,452	378,567 (1%)	0%		0	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 73.27 per share.	13 Feb 2025	7,476	371,091 (1%)	0%	73.3	547,767	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Feb 2025	130,640	501,731 (1%)	0%		0	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Feb 2025	24,600	24,600	-		-	Option to Acquire Common Stock
Frederick Saint	President, Marketplaces	Sale or transfer of securities back to the company at price $ 0.00 per share.	13 Feb 2025	6,452	286,793 (0%)	0%		0	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Payment of exercise price or tax liability using portion of securities received from the company at price $ 73.27 per share.	13 Feb 2025	6,602	280,191 (0%)	0%	73.3	483,729	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Feb 2025	97,600	377,791 (1%)	0%		0	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Operations	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Feb 2025	16,500	16,500	-		-	Option to Acquire Common Stock
Lisa C. Ruggles	Senior VP, Global Operations	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Feb 2025	65,440	220,581 (0%)	0%		0	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Operations	Payment of exercise price or tax liability using portion of securities received from the company at price $ 73.27 per share.	13 Feb 2025	7,481	155,141 (0%)	0%	73.3	548,133	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Operations	Sale or transfer of securities back to the company at price $ 0.00 per share.	13 Feb 2025	6,452	162,622 (0%)	0%		0	Common Stock, par value $0.01 per share
John W. Hill	Director	Gift of securities by or to the insider at price $ 0.00 per share.	10 Dec 2024	195	17,304 (0%)	0%		0	Common Stock, par value $0.01 per share
John W. Hill	Director	Sale of securities on an exchange or to another person at price $ 76.76 per share.	10 Dec 2024	2,735	17,499 (0%)	0%	76.8	209,939	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Gift of securities by or to the insider at price $ 0.00 per share.	10 Dec 2024	64,909	1,848,592 (5%)	0%		0	Common Stock, par value $0.01 per share
Christopher J. Nassetta	Director	Sale of securities on an exchange or to another person at price $ 80.39 per share.	27 Nov 2024	1,681	229,715 (0%)	0%	80.4	135,136	Common Stock, par value $0.01 per share
Desmarais Michael	Chief Human Resources Officer	Sale of securities on an exchange or to another person at price $ 79.88 per share.	26 Nov 2024	5,500	58,798 (0%)	0%	79.9	439,340	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Purchase of securities on an exchange or from another person at price $ 74.67 per share.	25 Oct 2024	14,731	1,263,098 (3%)	0%	74.7	1,099,966	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Gift of securities by or to the insider at price $ 0.00 per share.	25 Oct 2024	5,872	1,985,134 (5%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Sale of securities on an exchange or to another person at price $ 74.69 per share.	25 Oct 2024	71,633	1,913,501 (5%)	0%	74.7	5,350,269	Common Stock, par value $0.01 per share
Cynthia Cammett Cann	Chief Accounting Officer	Sale of securities on an exchange or to another person at price $ 79.90 per share.	31 Jul 2024	1,749	29,456 (0%)	0%	79.9	139,745	Common Stock, par value $0.01 per share
Cynthia Cammett Cann	Chief Accounting Officer	Sale of securities on an exchange or to another person at price $ 76.85 per share.	31 Jul 2024	1,310	26,485 (0%)	0%	76.9	100,674	Common Stock, par value $0.01 per share
Cynthia Cammett Cann	Chief Accounting Officer	Sale of securities on an exchange or to another person at price $ 78.20 per share.	31 Jul 2024	1,200	27,795 (0%)	0%	78.2	93,840	Common Stock, par value $0.01 per share
John W. Hill	Director	Sale of securities on an exchange or to another person at price $ 78.16 per share.	30 Jul 2024	1,325	16,545 (0%)	0%	78.2	103,562	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Gift of securities by or to the insider at price $ 0.00 per share.	27 Jul 2024	6,346	1,997,379 (5%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Gift of securities by or to the insider at price $ 0.00 per share.	27 Jul 2024	4,810	1,987,225 (5%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Gift of securities by or to the insider at price $ 0.00 per share.	27 Jul 2024	5,344	1,992,035 (5%)	0%		0	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Grant, award, or other acquisition of securities at price $ 0.00 per share.	26 Jul 2024	12,738	295,594 (0%)	0%		0	Common Stock, par value $0.01 per share
Cynthia Cammett Cann	Chief Accounting Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	26 Jul 2024	9,553	28,995 (0%)	0%		0	Common Stock, par value $0.01 per share
Christopher J. Nassetta	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	17 Jul 2024	3,781	231,396 (0%)	0%		0	Common Stock, par value $0.01 per share
John W. Hill	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	17 Jul 2024	3,689	20,234 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	17 Jul 2024	3,781	1,991,006 (5%)	0%		0	Common Stock, par value $0.01 per share
Robert W. Musslewhite	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	17 Jul 2024	3,293	15,156 (0%)	0%		0	Common Stock, par value $0.01 per share
Louise S. Sams	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	17 Jul 2024	3,491	16,118 (0%)	0%		0	Common Stock, par value $0.01 per share
Laura Cox Kaplan	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	17 Jul 2024	3,452	17,835 (0%)	0%		0	Common Stock, par value $0.01 per share
Angelique G. Brunner	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	17 Jul 2024	3,491	7,023 (0%)	0%		0	Common Stock, par value $0.01 per share
Christian Lown	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	01 Jul 2024	33,839	33,839 (0%)	0%		0	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Operations	Payment of exercise price or tax liability using portion of securities received from the company at price $ 78.18 per share.	01 Jun 2024	11	172,605 (0%)	0%	78.2	860	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Sale of securities on an exchange or to another person at price $ 88.43 per share.	16 May 2024	2,500	282,856 (0%)	0%	88.4	221,075	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Operations	Sale of securities on an exchange or to another person at price $ 91.15 per share.	09 May 2024	20,000	172,616 (0%)	0%	91.2	1,823,000	Common Stock, par value $0.01 per share
Christopher J. Nassetta	Director	Gift of securities by or to the insider at price $ 0.00 per share.	07 May 2024	46,000	227,615 (0%)	0%		0	Common Stock, par value $0.01 per share
Christopher J. Nassetta	Director	Gift of securities by or to the insider at price $ 0.00 per share.	07 May 2024	46,000	46,000 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 39.82 per share.	26 Apr 2024	42,670	346,087 (0%)	0%	39.8	1,699,119	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	26 Apr 2024	7,133	14,267	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	26 Apr 2024	21,933	10,967	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	26 Apr 2024	51,000	0	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	26 Apr 2024	42,670	0	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Sale of securities on an exchange or to another person at price $ 92.61 per share.	26 Apr 2024	122,736	303,417 (0%)	0%	92.6	11,366,581	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 76.78 per share.	26 Apr 2024	7,133	426,153 (1%)	0%	76.8	547,672	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 67.29 per share.	26 Apr 2024	21,933	419,020 (1%)	0%	67.3	1,475,872	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 66.65 per share.	26 Apr 2024	51,000	397,087 (1%)	0%	66.7	3,399,150	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Sale of securities on an exchange or to another person at price $ 92.67 per share.	26 Apr 2024	3,800	64,087 (0%)	0%	92.7	352,146	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 87.87 per share.	15 Mar 2024	8,444	303,417 (0%)	0%	87.9	741,974	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 87.87 per share.	15 Mar 2024	5,128	390,504 (1%)	0%	87.9	450,597	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Operations	Payment of exercise price or tax liability using portion of securities received from the company at price $ 87.87 per share.	15 Mar 2024	666	192,616 (0%)	0%	87.9	58,521	Common Stock, par value $0.01 per share
Gene Boxer	General Counsel and Secretary	Payment of exercise price or tax liability using portion of securities received from the company at price $ 87.87 per share.	15 Mar 2024	372	43,308 (0%)	0%	87.9	32,688	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 87.87 per share.	15 Mar 2024	2,267	67,887 (0%)	0%	87.9	199,201	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	12 Mar 2024	415	1,541 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	12 Mar 2024	357	2,084 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	12 Mar 2024	415	2,076 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	12 Mar 2024	1,187	311,861 (0%)	0%		0	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 87.03 per share.	01 Mar 2024	24,228	1,248,367 (3%)	0%	87.0	2,108,563	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 87.03 per share.	01 Mar 2024	6,091	395,632 (1%)	0%	87.0	530,100	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Payment of exercise price or tax liability using portion of securities received from the company at price $ 87.03 per share.	01 Mar 2024	6,351	285,356 (0%)	0%	87.0	552,728	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 87.03 per share.	01 Mar 2024	10,121	313,048 (0%)	0%	87.0	880,831	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	01 Mar 2024	21,308	323,169 (0%)	0%		-	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Operations	Payment of exercise price or tax liability using portion of securities received from the company at price $ 87.03 per share.	01 Mar 2024	6,091	193,282 (0%)	0%	87.0	530,100	Common Stock, par value $0.01 per share
Gene Boxer	General Counsel and Secretary	Payment of exercise price or tax liability using portion of securities received from the company at price $ 87.03 per share.	01 Mar 2024	1,238	43,680 (0%)	0%	87.0	107,743	Common Stock, par value $0.01 per share
Gene Boxer	General Counsel and Secretary	Grant, award, or other acquisition of securities at price $ 0.00 per share.	01 Mar 2024	8,694	44,918 (0%)	0%		-	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 87.03 per share.	01 Mar 2024	1,829	70,154 (0%)	0%	87.0	159,178	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	01 Mar 2024	6,924	71,983 (0%)	0%		-	Common Stock, par value $0.01 per share
Florance C. Andrew	Director, President and CEO	Sale or transfer of securities back to the company at price $ 0.00 per share.	22 Feb 2024	31,200	926,813 (2%)	0%		0	Common Stock, par value $0.01 per share
Saint Frederick	President, Marketplaces	Payment of exercise price or tax liability using portion of securities received from the company at price $ 83.98 per share.	22 Feb 2024	4,881	222,547 (0%)	0%	84.0	409,906	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	22 Feb 2024	31,200	31,200	-		-	Option to Acquire Common Stock
C. Lisa Ruggles	Senior VP, Global Operations	Grant, award, or other acquisition of securities at price $ 0.00 per share.	22 Feb 2024	57,560	199,373 (0%)	0%		0	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Operations	Payment of exercise price or tax liability using portion of securities received from the company at price $ 83.98 per share.	22 Feb 2024	4,428	141,813 (0%)	0%	84.0	371,863	Common Stock, par value $0.01 per share
Simuro Frank	Chief Technology Officer	Sale or transfer of securities back to the company at price $ 0.00 per share.	22 Feb 2024	7,200	279,770 (0%)	0%		0	Common Stock, par value $0.01 per share
Lisa Ruggles C.	Senior VP, Global Operations	Sale or transfer of securities back to the company at price $ 0.00 per share.	22 Feb 2024	7,200	146,241 (0%)	0%		0	Common Stock, par value $0.01 per share
Wheeler T. Scott	Chief Financial Officer	Sale or transfer of securities back to the company at price $ 0.00 per share.	22 Feb 2024	10,400	307,208 (0%)	0%		0	Common Stock, par value $0.01 per share
T. Wheeler Scott	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 83.98 per share.	22 Feb 2024	5,347	301,861 (0%)	0%	84.0	449,041	Common Stock, par value $0.01 per share
Saint Frederick	President, Marketplaces	Grant, award, or other acquisition of securities at price $ 0.00 per share.	22 Feb 2024	17,000	17,000	-		-	Option to Acquire Common Stock
Gene Boxer	General Counsel and Secretary	Grant, award, or other acquisition of securities at price $ 0.00 per share.	22 Feb 2024	18,189	36,224 (0%)	0%		0	Common Stock, par value $0.01 per share
Florance C. Andrew	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	22 Feb 2024	367,840	1,272,595 (3%)	1%		0	Common Stock, par value $0.01 per share
C. Andrew Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	22 Feb 2024	90,500	90,500	-		-	Option to Acquire Common Stock
Saint Frederick	President, Marketplaces	Sale or transfer of securities back to the company at price $ 0.00 per share.	22 Feb 2024	8,000	227,428 (0%)	0%		0	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	22 Feb 2024	126,480	401,723 (1%)	0%		0	Common Stock, par value $0.01 per share
C. Andrew Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 83.98 per share.	22 Feb 2024	22,058	904,755 (2%)	0%	84.0	1,852,431	Common Stock, par value $0.01 per share
Desmarais Michael	Chief Human Resources Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	22 Feb 2024	16,976	65,059 (0%)	0%		0	Common Stock, par value $0.01 per share
Ruggles Lisa C.	Senior VP, Global Operations	Grant, award, or other acquisition of securities at price $ 0.00 per share.	22 Feb 2024	14,200	14,200	-		-	Option to Acquire Common Stock
Simuro Frank	Chief Technology Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 83.98 per share.	22 Feb 2024	4,527	275,243 (0%)	0%	84.0	380,177	Common Stock, par value $0.01 per share
Saint Frederick	President, Marketplaces	Grant, award, or other acquisition of securities at price $ 0.00 per share.	22 Feb 2024	69,160	291,707 (0%)	0%		0	Common Stock, par value $0.01 per share
Simuro Frank	Chief Technology Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 82.32 per share.	15 Feb 2024	4,233	286,970 (0%)	0%	82.3	348,461	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Payment of exercise price or tax liability using portion of securities received from the company at price $ 82.32 per share.	15 Feb 2024	2,349	235,428 (0%)	0%	82.3	193,370	Common Stock, par value $0.01 per share
Ruggles C. Lisa	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 82.32 per share.	15 Feb 2024	2,367	153,441 (0%)	0%	82.3	194,851	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 82.32 per share.	15 Feb 2024	16,296	958,013 (2%)	0%	82.3	1,341,487	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 82.32 per share.	15 Feb 2024	3,462	317,608 (0%)	0%	82.3	284,992	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Sale of securities on an exchange or to another person at price $ 91.42 per share.	30 Jun 2023	30,474	156,208 (0%)	0%	91.4	2,785,933	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Sale of securities on an exchange or to another person at price $ 89.30 per share.	28 Jun 2023	21,530	324,714 (0%)	0%	89.3	1,922,629	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Sale of securities on an exchange or to another person at price $ 89.65 per share.	27 Jun 2023	92,300	264,483 (0%)	0%	89.7	8,274,695	Common Stock, par value $0.01 per share
John W. Hill	Director	Sale of securities on an exchange or to another person at price $ 86.57 per share.	26 Jun 2023	1,500	16,934 (0%)	0%	86.6	129,855	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Sale of securities on an exchange or to another person at price $ 80.24 per share.	07 Jun 2023	30,000	237,887 (0%)	0%	80.2	2,407,200	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 79.36 per share.	01 Jun 2023	11	186,682 (0%)	0%	79.4	873	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Gift of securities by or to the insider at price $ 0.00 per share.	23 May 2023	3,977	2,059,670 (5%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	02 May 2023	447	1,661 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	02 May 2023	447	1,126 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	02 May 2023	447	1,727 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	02 May 2023	5,051	367,204 (1%)	0%		0	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 18.28 per share.	28 Apr 2023	360,530	1,334,839 (3%)	0%	18.3	6,590,488	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	28 Apr 2023	360,530	0	-		-	Option to Acquire Common Stock
Andrew C. Florance	Director, President and CEO	Sale of securities on an exchange or to another person at price $ 76.77 per share.	28 Apr 2023	360,530	974,309 (2%)	0%	76.8	27,677,888	Common Stock, par value $0.01 per share
John W. Hill	Director	Sale of securities on an exchange or to another person at price $ 68.50 per share.	31 Mar 2023	2,300	18,434 (0%)	0%	68.5	157,550	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 18.28 per share.	17 Mar 2023	5,470	348,983 (0%)	0%	18.3	99,992	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	17 Mar 2023	2,920	22,420	-		-	Option to Acquire Common Stock
Frank Simuro	Chief Technology Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	17 Mar 2023	4,880	0	-		-	Option to Acquire Common Stock
Frank Simuro	Chief Technology Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	17 Mar 2023	5,470	0	-		-	Option to Acquire Common Stock
Frank Simuro	Chief Technology Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	17 Mar 2023	10,320	0	-		-	Option to Acquire Common Stock
Frank Simuro	Chief Technology Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 34.21 per share.	17 Mar 2023	2,920	356,783 (0%)	0%	34.2	99,893	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 20.49 per share.	17 Mar 2023	4,880	353,863 (0%)	0%	20.5	99,991	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 19.37 per share.	17 Mar 2023	10,320	343,513 (0%)	0%	19.4	199,898	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 67.62 per share.	15 Mar 2023	9,261	974,309 (2%)	0%	67.6	626,229	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	15 Mar 2023	37,844	983,570 (2%)	0%		-	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Payment of exercise price or tax liability using portion of securities received from the company at price $ 67.62 per share.	15 Mar 2023	10,743	267,887 (0%)	0%	67.6	726,442	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	15 Mar 2023	26,534	384,230 (1%)	0%		-	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 67.62 per share.	15 Mar 2023	11,975	372,255 (1%)	0%	67.6	809,750	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 67.62 per share.	15 Mar 2023	2,485	186,693 (0%)	0%	67.6	168,036	Common Stock, par value $0.01 per share
Gene Boxer	General Counsel and Secretary	Payment of exercise price or tax liability using portion of securities received from the company at price $ 67.62 per share.	15 Mar 2023	371	18,035 (0%)	0%	67.6	25,087	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 67.62 per share.	15 Mar 2023	2,210	45,928 (0%)	0%	67.6	149,440	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	15 Mar 2023	3,292	48,138 (0%)	0%		-	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Sale of securities on an exchange or to another person at price $ 70.36 per share.	08 Mar 2023	5,600	44,846 (0%)	0%	70.4	394,016	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 70.66 per share.	01 Mar 2023	24,224	964,087 (2%)	0%	70.7	1,711,668	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 10.22 per share.	01 Mar 2023	35,220	372,797 (1%)	0%	10.2	359,948	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	01 Mar 2023	35,220	0	-		-	Option to Acquire Common Stock
Frank Simuro	Chief Technology Officer	Sale of securities on an exchange or to another person at price $ 70.09 per share.	01 Mar 2023	35,220	337,577 (0%)	0%	70.1	2,468,570	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 70.66 per share.	01 Mar 2023	6,085	337,577 (0%)	0%	70.7	429,966	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Payment of exercise price or tax liability using portion of securities received from the company at price $ 70.66 per share.	01 Mar 2023	6,388	283,014 (0%)	0%	70.7	451,376	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 70.66 per share.	01 Mar 2023	9,972	365,000 (0%)	0%	70.7	704,622	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 70.66 per share.	01 Mar 2023	6,085	193,562 (0%)	0%	70.7	429,966	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 70.66 per share.	01 Mar 2023	593	50,446 (0%)	0%	70.7	41,901	Common Stock, par value $0.01 per share
Gene Boxer	General Counsel and Secretary	Grant, award, or other acquisition of securities at price $ 70.73 per share.	24 Feb 2023	14,139	18,406 (0%)	0%	70.7	1,000,051	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Grant, award, or other acquisition of securities at price $ 70.73 per share.	24 Feb 2023	14,139	51,039 (0%)	0%	70.7	1,000,051	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Feb 2023	73,400	73,400	-		-	Option to Acquire Common Stock
Andrew C. Florance	Director, President and CEO	Sale or transfer of securities back to the company at price $ 0.00 per share.	14 Feb 2023	68,537	714,882 (1%)	0%		0	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Feb 2023	285,900	1,000,782 (2%)	0%		0	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 76.78 per share.	14 Feb 2023	12,471	988,311 (2%)	0%	76.8	957,523	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Feb 2023	21,400	21,400	-		-	Option to Acquire Common Stock
Frank Simuro	Chief Technology Officer	Sale or transfer of securities back to the company at price $ 0.00 per share.	14 Feb 2023	14,279	262,323 (0%)	0%		0	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Feb 2023	83,600	345,923 (0%)	0%		0	Common Stock, par value $0.01 per share
Frank Simuro	Chief Technology Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 76.78 per share.	14 Feb 2023	2,261	343,662 (0%)	0%	76.8	173,600	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Sale or transfer of securities back to the company at price $ 0.00 per share.	14 Feb 2023	14,279	243,841 (0%)	0%		0	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Feb 2023	12,300	12,300	-		-	Option to Acquire Common Stock
Frederick Saint	President, Marketplaces	Payment of exercise price or tax liability using portion of securities received from the company at price $ 76.78 per share.	14 Feb 2023	2,259	289,402 (0%)	0%	76.8	173,446	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Feb 2023	47,820	291,661 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Feb 2023	21,400	21,400	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Sale or transfer of securities back to the company at price $ 0.00 per share.	14 Feb 2023	21,418	295,513 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Feb 2023	83,600	379,113 (1%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 76.78 per share.	14 Feb 2023	4,141	374,972 (1%)	0%	76.8	317,946	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Sale or transfer of securities back to the company at price $ 0.00 per share.	14 Feb 2023	14,279	154,086 (0%)	0%		0	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 76.78 per share.	14 Feb 2023	2,259	199,647 (0%)	0%	76.8	173,446	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Feb 2023	47,820	201,906 (0%)	0%		0	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Feb 2023	12,300	12,300	-		-	Option to Acquire Common Stock
Michael R. Klein	Director	Gift of securities by or to the insider at price $ 0.00 per share.	31 Dec 2022	15,000	2,063,647 (5%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	31 Dec 2022	2,610	316,931 (0%)	0%		0	Common Stock, par value $0.01 per share
John W. Hill	Director	Sale of securities on an exchange or to another person at price $ 78.92 per share.	03 Nov 2022	3,650	20,734 (0%)	0%	78.9	288,058	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Sale of securities on an exchange or to another person at price $ 82.81 per share.	28 Oct 2022	1,296	36,900 (0%)	0%	82.8	107,322	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 69.65 per share.	01 Oct 2022	1,423	38,196 (0%)	0%	69.7	99,112	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Sep 2022	48	783,419 (2%)	0%		0	Common Stock, par value $0.01 per share
Christopher J. Nassetta	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Sep 2022	3,880	271,060 (0%)	0%		0	Common Stock, par value $0.01 per share
John W. Hill	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Sep 2022	3,786	24,384 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael J. Glosserman	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Sep 2022	3,745	97,552 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Sep 2022	3,880	2,078,647 (5%)	0%		0	Common Stock, par value $0.01 per share
Robert W. Musslewhite	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Sep 2022	3,380	8,331 (0%)	0%		0	Common Stock, par value $0.01 per share
Louise S. Sams	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Sep 2022	3,583	8,883 (0%)	0%		0	Common Stock, par value $0.01 per share
Laura Cox Kaplan	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	14 Sep 2022	3,542	10,681 (0%)	0%		0	Common Stock, par value $0.01 per share
John W. Hill	Director	Sale of securities on an exchange or to another person at price $ 74.49 per share.	10 Aug 2022	1,400	20,598 (0%)	0%	74.5	104,286	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Sale of securities on an exchange or to another person at price $ 72.42 per share.	05 Aug 2022	150,000	2,074,767 (5%)	0%	72.4	10,863,000	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Sale of securities on an exchange or to another person at price $ 72.51 per share.	03 Aug 2022	2,000	39,619 (0%)	0%	72.5	145,020	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 60.91 per share.	01 Jun 2022	11	168,365 (0%)	0%	60.9	670	Common Stock, par value $0.01 per share
John W. Hill	Director	Sale of securities on an exchange or to another person at price $ 57.07 per share.	24 May 2022	1,750	21,998 (0%)	0%	57.1	99,873	Common Stock, par value $0.01 per share
Michael Desmarais	Chief Human Resources Officer	Sale of securities on an exchange or to another person at price $ 63.14 per share.	02 May 2022	1,000	41,619 (0%)	0%	63.1	63,140	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	15 Mar 2022	550	1,280 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	15 Mar 2022	550	1,280 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	15 Mar 2022	1,134	319,541 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	15 Mar 2022	34	679 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	15 Mar 2022	29,274	320,675 (0%)	0%		-	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	15 Mar 2022	6,776	168,376 (0%)	0%		-	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 61.01 per share.	01 Mar 2022	11,541	783,371 (2%)	0%	61.0	704,116	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Payment of exercise price or tax liability using portion of securities received from the company at price $ 61.01 per share.	01 Mar 2022	3,157	258,120 (0%)	0%	61.0	192,609	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 61.01 per share.	01 Mar 2022	4,664	291,401 (0%)	0%	61.0	284,551	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 61.01 per share.	01 Mar 2022	2,854	183,240 (0%)	0%	61.0	174,123	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Sale of securities on an exchange or to another person at price $ 59.88 per share.	01 Mar 2022	21,640	161,600 (0%)	0%	59.9	1,295,803	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Sale of securities on an exchange or to another person at price $ 81.72 per share.	11 Nov 2021	85	645 (0%)	0%	81.7	6,946	Common Stock, par value $0.01 per share
Christopher J. Nassetta	Director	Sale of securities on an exchange or to another person at price $ 83.21 per share.	10 Nov 2021	2,120	267,180 (0%)	0%	83.2	176,405	Common Stock, par value $0.01 per share
Laura Cox Kaplan	Director	Sale of securities on an exchange or to another person at price $ 83.29 per share.	05 Nov 2021	4,040	7,139 (0%)	0%	83.3	336,492	Common Stock, par value $0.01 per share
John W. Hill	Director	Sale of securities on an exchange or to another person at price $ 86.97 per share.	29 Oct 2021	9,235	23,923 (0%)	0%	87.0	803,170	Common Stock, par value $0.01 per share
Christopher J. Nassetta	Director	Grant, award, or other acquisition of securities at price $ 88.95 per share.	15 Sep 2021	3,070	269,300 (0%)	0%	89.0	273,077	Common Stock, par value $0.01 per share
John W. Hill	Director	Grant, award, or other acquisition of securities at price $ 88.95 per share.	15 Sep 2021	3,148	33,158 (0%)	0%	89.0	280,015	Common Stock, par value $0.01 per share
Michael J. Glosserman	Director	Grant, award, or other acquisition of securities at price $ 88.95 per share.	15 Sep 2021	3,047	93,807 (0%)	0%	89.0	271,031	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Grant, award, or other acquisition of securities at price $ 88.95 per share.	15 Sep 2021	3,047	2,224,767 (6%)	0%	89.0	271,031	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Gift of securities by or to the insider at price $ 0.00 per share.	15 Sep 2021	12,500	2,304,040 (6%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Gift of securities by or to the insider at price $ 0.00 per share.	15 Sep 2021	82,320	2,221,720 (6%)	0%		0	Common Stock, par value $0.01 per share
Robert W. Musslewhite	Director	Grant, award, or other acquisition of securities at price $ 88.95 per share.	15 Sep 2021	2,811	4,951 (0%)	0%	88.9	250,038	Common Stock, par value $0.01 per share
Louise S. Sams	Director	Grant, award, or other acquisition of securities at price $ 88.95 per share.	15 Sep 2021	2,980	5,300 (0%)	0%	89.0	265,071	Common Stock, par value $0.01 per share
Laura Cox Kaplan	Director	Grant, award, or other acquisition of securities at price $ 88.95 per share.	15 Sep 2021	2,879	11,179 (0%)	0%	88.9	256,087	Common Stock, par value $0.01 per share
John W. Hill	Director	Sale of securities on an exchange or to another person at price $ 85.76 per share.	09 Aug 2021	6,160	30,200 (0%)	0%	85.8	528,312	Common Stock, par value $0.01 per share
John W. Hill	Director	Gift of securities by or to the insider at price $ 0.00 per share.	09 Aug 2021	190	30,010 (0%)	0%		0	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 841.90 per share.	20 May 2021	10	16,306 (0%)	0%	841.9	8,419	Common Stock, par value $0.01 per share
Laura Cox Kaplan	Director	Sale of securities on an exchange or to another person at price $ 869.03 per share.	30 Apr 2021	1,062	830 (0%)	0%	869.0	922,910	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 799.55 per share.	31 Mar 2021	275	16,296 (0%)	0%	799.5	219,876	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Exercise or conversion of derivative security received from the company (such as an option) at price $ 342.13 per share.	23 Mar 2021	5,067	31,991 (0%)	0%	342.1	1,733,573	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	23 Mar 2021	5,067	0	-		-	Option to Acquire Common Stock
Frederick Saint	President, Marketplaces	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	23 Mar 2021	2,767	0	-		-	Option to Acquire Common Stock
Frederick Saint	President, Marketplaces	Sale of securities on an exchange or to another person at price $ 831.70 per share.	23 Mar 2021	7,834	24,157 (0%)	0%	831.7	6,515,538	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Exercise or conversion of derivative security received from the company (such as an option) at price $ 204.91 per share.	23 Mar 2021	2,767	26,924 (0%)	0%	204.9	566,986	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 398.15 per share.	15 Mar 2021	2,133	34,739 (0%)	0%	398.2	849,254	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	15 Mar 2021	2,133	4,267	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	15 Mar 2021	3,600	0	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	15 Mar 2021	37	73 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	15 Mar 2021	37	73 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	15 Mar 2021	37	73 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	15 Mar 2021	111	27,037 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	15 Mar 2021	265	27,148 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	15 Mar 2021	1,598	29,006 (0%)	0%		-	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 342.13 per share.	15 Mar 2021	3,600	32,606 (0%)	0%	342.1	1,231,668	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Sale of securities on an exchange or to another person at price $ 843.28 per share.	15 Mar 2021	7,326	27,413 (0%)	0%	843.3	6,177,869	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	15 Mar 2021	446	16,571 (0%)	0%		-	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Sale of securities on an exchange or to another person at price $ 818.37 per share.	10 Mar 2021	19,570	76,085 (0%)	0%	818.4	16,015,501	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Sale or transfer of securities back to the company at price $ 0.00 per share.	28 Feb 2021	799	101,177 (0%)	0%		0	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 823.76 per share.	28 Feb 2021	5,522	95,655 (0%)	0%	823.8	4,548,803	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Sale or transfer of securities back to the company at price $ 0.00 per share.	28 Feb 2021	200	25,735 (0%)	0%		0	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Payment of exercise price or tax liability using portion of securities received from the company at price $ 823.76 per share.	28 Feb 2021	1,578	24,157 (0%)	0%	823.8	1,299,893	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Sale or transfer of securities back to the company at price $ 0.00 per share.	28 Feb 2021	280	29,780 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 823.76 per share.	28 Feb 2021	2,372	27,408 (0%)	0%	823.8	1,953,959	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 823.76 per share.	28 Feb 2021	1,388	16,125 (0%)	0%	823.8	1,143,379	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Sale or transfer of securities back to the company at price $ 0.00 per share.	28 Feb 2021	180	17,513 (0%)	0%		0	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	18 Feb 2021	8,000	8,000	-		-	Option to Acquire Common Stock
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	18 Feb 2021	18,160	101,976 (0%)	0%		0	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Grant, award, or other acquisition of securities at price $ 0.00 per share.	18 Feb 2021	4,500	25,935 (0%)	0%		0	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Grant, award, or other acquisition of securities at price $ 0.00 per share.	18 Feb 2021	1,900	1,900	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	18 Feb 2021	6,020	30,060 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	18 Feb 2021	2,600	2,600	-		-	Option to Acquire Common Stock
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	18 Feb 2021	4,060	17,693 (0%)	0%		0	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	18 Feb 2021	1,700	1,700	-		-	Option to Acquire Common Stock
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 939.76 per share.	15 Feb 2021	3,305	83,816 (0%)	0%	939.8	3,105,907	Common Stock, par value $0.01 per share
Frederick Saint	President, Marketplaces	Payment of exercise price or tax liability using portion of securities received from the company at price $ 939.76 per share.	15 Feb 2021	641	21,435 (0%)	0%	939.8	602,386	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 939.76 per share.	15 Feb 2021	1,115	24,040 (0%)	0%	939.8	1,047,832	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 939.76 per share.	15 Feb 2021	581	13,633 (0%)	0%	939.8	546,001	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	11 Jan 2021	1	25,155 (0%)	0%		0	Common Stock, par value $0.01 per share
Christopher J. Nassetta	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	24 Sep 2020	242	26,623 (0%)	0%		0	Common Stock, par value $0.01 per share
John W. Hill	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	24 Sep 2020	251	3,657 (0%)	0%		0	Common Stock, par value $0.01 per share
John W. Hill	Director	Gift of securities by or to the insider at price $ 0.00 per share.	24 Sep 2020	21	3,636 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael J. Glosserman	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	24 Sep 2020	240	9,076 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	24 Sep 2020	240	231,654 (0%)	0%		0	Common Stock, par value $0.01 per share
Robert W. Musslewhite	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	24 Sep 2020	214	214 (0%)	0%		0	Common Stock, par value $0.01 per share
Louise S. Sams	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	24 Sep 2020	232	232 (0%)	0%		0	Common Stock, par value $0.01 per share
Laura Cox Kaplan	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	24 Sep 2020	221	1,892 (0%)	0%		0	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Sale of securities on an exchange or to another person at price $ 870.00 per share.	02 Sep 2020	7,596	14,464 (0%)	0%	870	6,608,520	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	02 Sep 2020	4,333	2,167	-		-	Option to Acquire Common Stock
Lisa C. Ruggles	Senior VP, Global Research	Exercise or conversion of derivative security received from the company (such as an option) at price $ 342.13 per share.	02 Sep 2020	4,333	22,060 (0%)	0%	342.1	1,482,449	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 193.69 per share.	26 Aug 2020	15,584	122,705 (0%)	0%	193.7	3,018,465	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	26 Aug 2020	15,584	0	-		-	Option to Acquire Common Stock
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	26 Aug 2020	15,584	15,584	-		-	Option to Acquire Common Stock
Andrew C. Florance	Director, President and CEO	Sale of securities on an exchange or to another person at price $ 851.66 per share.	26 Aug 2020	15,584	107,121 (0%)	0%	851.7	13,272,269	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 193.69 per share.	26 Aug 2020	15,584	122,705 (0%)	0%	193.7	3,018,465	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Sale of securities on an exchange or to another person at price $ 848.16 per share.	26 Aug 2020	15,584	107,121 (0%)	0%	848.2	13,217,725	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Sale of securities on an exchange or to another person at price $ 826.32 per share.	12 Aug 2020	2,419	19,766 (0%)	0%	826.3	1,998,868	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 204.91 per share.	04 Aug 2020	4,700	33,664 (0%)	0%	204.9	963,077	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	04 Aug 2020	3,600	3,600	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	04 Aug 2020	4,700	0	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	04 Aug 2020	36	36 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	04 Aug 2020	36	36 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	04 Aug 2020	36	36 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	04 Aug 2020	108	25,154 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Sale of securities on an exchange or to another person at price $ 826.71 per share.	04 Aug 2020	12,002	25,262 (0%)	0%	826.7	9,922,173	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 342.13 per share.	04 Aug 2020	3,600	37,264 (0%)	0%	342.1	1,231,668	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 664.00 per share.	27 May 2020	27	17,727 (0%)	0%	664	17,928	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Sale of securities on an exchange or to another person at price $ 647.52 per share.	06 May 2020	3,639	242,775 (0%)	0%	647.5	2,356,325	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Gift of securities by or to the insider at price $ 0.00 per share.	06 May 2020	1,500	246,414 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Sale of securities on an exchange or to another person at price $ 636.51 per share.	06 May 2020	11,361	231,414 (0%)	0%	636.5	7,231,390	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 599.99 per share.	31 Mar 2020	3,026	107,121 (0%)	0%	600.0	1,815,570	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Payment of exercise price or tax liability using portion of securities received from the company at price $ 599.99 per share.	31 Mar 2020	1,051	22,185 (0%)	0%	600.0	630,589	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 599.99 per share.	31 Mar 2020	1,239	28,964 (0%)	0%	600.0	743,388	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 599.99 per share.	31 Mar 2020	275	17,754 (0%)	0%	600.0	164,997	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Mar 2020	1,728	30,203 (0%)	0%		-	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Mar 2020	152	18,029 (0%)	0%		-	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Gift of securities by or to the insider at price $ 0.00 per share.	04 Mar 2020	5,532	247,914 (0%)	0%		0	Common Stock, par value $0.01 per share
David J. Steinberg	Director	Sale of securities on an exchange or to another person at price $ 714.00 per share.	04 Mar 2020	850	6,456 (0%)	0%	714	606,900	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 201.04 per share.	29 Feb 2020	33,600	143,747 (0%)	0%	201.0	6,754,944	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Sale of securities on an exchange or to another person at price $ 663.90 per share.	29 Feb 2020	33,600	110,147 (0%)	0%	663.9	22,307,040	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 667.59 per share.	29 Feb 2020	5,447	110,147 (0%)	0%	667.6	3,636,363	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 667.59 per share.	29 Feb 2020	2,527	115,594 (0%)	0%	667.6	1,687,000	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	29 Feb 2020	33,600	0	-		-	Option to Acquire Common Stock
Matthew Linnington	Executive VP, Sales	Payment of exercise price or tax liability using portion of securities received from the company at price $ 667.59 per share.	29 Feb 2020	1,957	23,236 (0%)	0%	667.6	1,306,474	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Payment of exercise price or tax liability using portion of securities received from the company at price $ 667.59 per share.	29 Feb 2020	446	25,193 (0%)	0%	667.6	297,745	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 667.59 per share.	29 Feb 2020	2,318	30,880 (0%)	0%	667.6	1,547,474	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 667.59 per share.	29 Feb 2020	885	33,198 (0%)	0%	667.6	590,817	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	29 Feb 2020	3,600	7,200	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Sale of securities on an exchange or to another person at price $ 703.26 per share.	29 Feb 2020	6,005	28,475 (0%)	0%	703.3	4,223,076	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 342.13 per share.	29 Feb 2020	3,600	34,480 (0%)	0%	342.1	1,231,668	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 667.59 per share.	29 Feb 2020	419	17,877 (0%)	0%	667.6	279,720	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 731.37 per share.	15 Feb 2020	2,276	118,121 (0%)	0%	731.4	1,664,598	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Payment of exercise price or tax liability using portion of securities received from the company at price $ 731.37 per share.	15 Feb 2020	326	25,639 (0%)	0%	731.4	238,427	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 731.37 per share.	15 Feb 2020	708	34,083 (0%)	0%	731.4	517,810	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 731.37 per share.	15 Feb 2020	276	18,296 (0%)	0%	731.4	201,858	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	06 Feb 2020	22,520	120,397 (0%)	0%		0	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	06 Feb 2020	16,200	16,200	-		-	Option to Acquire Common Stock
Matthew Linnington	Executive VP, Sales	Grant, award, or other acquisition of securities at price $ 0.00 per share.	06 Feb 2020	4,160	25,965 (0%)	0%		0	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Grant, award, or other acquisition of securities at price $ 0.00 per share.	06 Feb 2020	2,900	2,900	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	06 Feb 2020	5,100	5,100	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	06 Feb 2020	7,100	34,791 (0%)	0%		0	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	06 Feb 2020	3,300	3,300	-		-	Option to Acquire Common Stock
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	06 Feb 2020	4,600	18,572 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 645.13 per share.	11 Jan 2020	1,546	27,691 (0%)	0%	645.1	997,371	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 182.75 per share.	31 Dec 2019	547	97,877 (0%)	0%	182.7	99,964	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 193.69 per share.	31 Dec 2019	1,032	97,330 (0%)	0%	193.7	199,888	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	31 Dec 2019	547	36,053	-		-	Option to Acquire Common Stock
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	31 Dec 2019	1,032	31,168	-		-	Option to Acquire Common Stock
John W. Hill	Director	Sale of securities on an exchange or to another person at price $ 591.90 per share.	31 Dec 2019	500	3,406 (0%)	0%	591.9	295,950	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 596.88 per share.	31 Dec 2019	250	13,972 (0%)	0%	596.9	149,220	Common Stock, par value $0.01 per share
Michael J. Glosserman	Director	Gift of securities by or to the insider at price $ 0.00 per share.	26 Dec 2019	830	8,836 (0%)	0%		0	Common Stock, par value $0.01 per share
Laura Cox Kaplan	Director	Sale of securities on an exchange or to another person at price $ 591.60 per share.	19 Nov 2019	576	1,671 (0%)	0%	591.6	340,762	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	01 Nov 2019	4	14,222 (0%)	0%		0	Common Stock, par value $0.01 per share
Christopher J. Nassetta	Director	Sale of securities on an exchange or to another person at price $ 570.99 per share.	25 Oct 2019	406	26,381 (0%)	0%	571.0	231,822	Common Stock, par value $0.01 per share
Christopher J. Nassetta	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	19 Sep 2019	331	26,787 (0%)	0%		0	Common Stock, par value $0.01 per share
John W. Hill	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	19 Sep 2019	343	3,906 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael J. Glosserman	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	19 Sep 2019	328	9,666 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	19 Sep 2019	328	265,524 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Gift of securities by or to the insider at price $ 0.00 per share.	19 Sep 2019	1,815	253,446 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Gift of securities by or to the insider at price $ 0.00 per share.	19 Sep 2019	1,995	255,261 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	Director	Gift of securities by or to the insider at price $ 0.00 per share.	19 Sep 2019	8,268	257,256 (0%)	0%		0	Common Stock, par value $0.01 per share
David J. Steinberg	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	19 Sep 2019	318	7,306 (0%)	0%		0	Common Stock, par value $0.01 per share
Laura Cox Kaplan	Director	Grant, award, or other acquisition of securities at price $ 0.00 per share.	19 Sep 2019	303	2,247 (0%)	0%		0	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	31 Jul 2019	3,500	0	-		-	Option to Acquire Common Stock
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	31 Jul 2019	2,000	4,000	-		-	Option to Acquire Common Stock
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	31 Jul 2019	7,533	3,767	-		-	Option to Acquire Common Stock
Matthew Linnington	Executive VP, Sales	Sale of securities on an exchange or to another person at price $ 617.39 per share.	31 Jul 2019	14,651	21,805 (0%)	0%	617.4	9,045,381	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 342.13 per share.	31 Jul 2019	2,000	36,456 (0%)	0%	342.1	684,260	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 204.91 per share.	31 Jul 2019	7,533	34,456 (0%)	0%	204.9	1,543,587	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 182.75 per share.	31 Jul 2019	3,500	26,923 (0%)	0%	182.8	639,625	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Sale of securities on an exchange or to another person at price $ 628.64 per share.	26 Jul 2019	24,210	96,298 (0%)	0%	628.6	15,219,374	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	26 Jul 2019	21	31,492 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 204.91 per share.	26 Jul 2019	4,700	36,192 (0%)	0%	204.9	963,077	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	26 Jul 2019	4,700	4,700	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Gift of securities by or to the insider at price $ 0.00 per share.	26 Jul 2019	22	29,237 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Sale of securities on an exchange or to another person at price $ 629.50 per share.	26 Jul 2019	6,933	29,259 (0%)	0%	629.5	4,364,324	Common Stock, par value $0.01 per share
John W. Hill	Director	Sale of securities on an exchange or to another person at price $ 553.23 per share.	24 Jun 2019	315	3,563 (0%)	0%	553.2	174,267	Common Stock, par value $0.01 per share
John W. Hill	Director	Gift of securities by or to the insider at price $ 0.00 per share.	24 Jun 2019	29	3,878 (0%)	0%		0	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Grant, award, or other acquisition of securities at price $ 0.00 per share.	02 Jun 2019	1	23,423 (0%)	0%		0	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 514.08 per share.	27 May 2019	93	14,218 (0%)	0%	514.1	47,809	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 514.07 per share.	27 May 2019	27	14,311 (0%)	0%	514.1	13,880	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 466.42 per share.	31 Mar 2019	3,026	120,508 (0%)	0%	466.4	1,411,387	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Payment of exercise price or tax liability using portion of securities received from the company at price $ 466.42 per share.	31 Mar 2019	1,049	23,422 (0%)	0%	466.4	489,275	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 466.42 per share.	31 Mar 2019	1,239	31,513 (0%)	0%	466.4	577,894	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 466.42 per share.	31 Mar 2019	237	14,338 (0%)	0%	466.4	110,542	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	15 Mar 2019	2,426	123,534 (0%)	0%		-	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	15 Mar 2019	2,450	32,752 (0%)	0%		-	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	15 Mar 2019	566	14,575 (0%)	0%		-	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 459.98 per share.	11 Mar 2019	8,245	121,108 (0%)	0%	460.0	3,792,535	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Payment of exercise price or tax liability using portion of securities received from the company at price $ 459.98 per share.	11 Mar 2019	2,206	24,471 (0%)	0%	460.0	1,014,716	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 102.16 per share.	28 Feb 2019	55,322	184,675 (0%)	0%	102.2	5,651,696	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	28 Feb 2019	55,322	0	-		-	Option to Acquire Common Stock
Andrew C. Florance	Director, President and CEO	Sale of securities on an exchange or to another person at price $ 473.38 per share.	28 Feb 2019	55,322	129,353 (0%)	0%	473.4	26,188,328	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 454.33 per share.	28 Feb 2019	2,198	129,353 (0%)	0%	454.3	998,617	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Sale of securities on an exchange or to another person at price $ 477.31 per share.	28 Feb 2019	4,701	26,677 (0%)	0%	477.3	2,243,834	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 193.69 per share.	28 Feb 2019	516	31,378 (0%)	0%	193.7	99,944	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Payment of exercise price or tax liability using portion of securities received from the company at price $ 454.33 per share.	28 Feb 2019	372	30,862 (0%)	0%	454.3	169,011	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	28 Feb 2019	516	0	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 454.33 per share.	28 Feb 2019	885	35,698 (0%)	0%	454.3	402,082	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Sale of securities on an exchange or to another person at price $ 476.11 per share.	28 Feb 2019	5,396	30,302 (0%)	0%	476.1	2,569,090	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Sale of securities on an exchange or to another person at price $ 466.62 per share.	28 Feb 2019	1,538	14,009 (0%)	0%	466.6	717,662	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 454.33 per share.	28 Feb 2019	337	15,547 (0%)	0%	454.3	153,109	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	07 Feb 2019	31,720	131,551 (0%)	0%		0	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	07 Feb 2019	22,200	22,200	-		-	Option to Acquire Common Stock
Matthew Linnington	Executive VP, Sales	Grant, award, or other acquisition of securities at price $ 0.00 per share.	07 Feb 2019	5,580	31,234 (0%)	0%		0	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Grant, award, or other acquisition of securities at price $ 0.00 per share.	07 Feb 2019	3,800	3,800	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	07 Feb 2019	6,400	6,400	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	07 Feb 2019	9,200	36,583 (0%)	0%		0	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	07 Feb 2019	3,800	3,800	-		-	Option to Acquire Common Stock
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	07 Feb 2019	5,580	15,884 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 359.62 per share.	11 Jan 2019	1,140	27,383 (0%)	0%	359.6	409,967	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 337.19 per share.	31 Dec 2018	167	10,304 (0%)	0%	337.2	56,311	Common Stock, par value $0.01 per share
John W. Hill	None	Sale of securities on an exchange or to another person at price $ 330.88 per share.	26 Dec 2018	1,042	3,907 (0%)	0%	330.9	344,777	Common Stock, par value $0.01 per share
Christopher J. Nassetta	None	Sale of securities on an exchange or to another person at price $ 349.67 per share.	29 Oct 2018	571	26,456 (0%)	0%	349.7	199,662	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Sale or transfer of securities back to the company at price $ 0.00 per share.	28 Sep 2018	15,347	6,540 (0%)	0%		0	Common Stock, par value $0.01 per share
Christopher J. Nassetta	None	Grant, award, or other acquisition of securities at price $ 0.00 per share.	20 Sep 2018	472	27,027 (0%)	0%		0	Common Stock, par value $0.01 per share
John W. Hill	None	Gift of securities by or to the insider at price $ 0.00 per share.	20 Sep 2018	37	4,949 (0%)	0%		0	Common Stock, par value $0.01 per share
John W. Hill	None	Grant, award, or other acquisition of securities at price $ 0.00 per share.	20 Sep 2018	488	4,986 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael J. Glosserman	None	Grant, award, or other acquisition of securities at price $ 0.00 per share.	20 Sep 2018	467	9,338 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	None	Grant, award, or other acquisition of securities at price $ 0.00 per share.	20 Sep 2018	467	265,196 (0%)	0%		0	Common Stock, par value $0.01 per share
Warren H. Haber	None	Grant, award, or other acquisition of securities at price $ 0.00 per share.	20 Sep 2018	453	121,049 (0%)	0%		0	Common Stock, par value $0.01 per share
David J. Steinberg	None	Grant, award, or other acquisition of securities at price $ 0.00 per share.	20 Sep 2018	453	6,988 (0%)	0%		0	Common Stock, par value $0.01 per share
Laura Cox Kaplan	None	Grant, award, or other acquisition of securities at price $ 0.00 per share.	20 Sep 2018	431	1,944 (0%)	0%		0	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Payment of exercise price or tax liability using portion of securities received from the company at price $ 435.98 per share.	11 Sep 2018	1,281	25,654 (0%)	0%	436.0	558,490	Common Stock, par value $0.01 per share
Michael R. Klein	None	Sale of securities on an exchange or to another person at price $ 420.69 per share.	06 Aug 2018	15,000	264,729 (0%)	0%	420.7	6,310,350	Common Stock, par value $0.01 per share
Michael R. Klein	None	Gift of securities by or to the insider at price $ 0.00 per share.	06 Aug 2018	10,000	279,729 (0%)	0%		0	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Gift of securities by or to the insider at price $ 0.00 per share.	31 Jul 2018	20,000	99,831 (0%)	0%		0	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	30 Jul 2018	1,884	516	-		-	Option to Acquire Common Stock
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	30 Jul 2018	2,500	3,500	-		-	Option to Acquire Common Stock
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 193.69 per share.	30 Jul 2018	1,884	28,819 (0%)	0%	193.7	364,912	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Sale of securities on an exchange or to another person at price $ 411.93 per share.	30 Jul 2018	4,384	26,935 (0%)	0%	411.9	1,805,901	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 182.75 per share.	30 Jul 2018	2,500	31,319 (0%)	0%	182.8	456,875	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Exercise or conversion of derivative security received from the company (such as an option) at price $ 193.69 per share.	27 Jul 2018	7,468	45,768 (0%)	0%	193.7	1,446,477	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	27 Jul 2018	11,100	0	-		-	Option to Acquire Common Stock
Frank A. Carchedi	Executive VP, Corp. Dev.	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	27 Jul 2018	7,468	1,032	-		-	Option to Acquire Common Stock
Frank A. Carchedi	Executive VP, Corp. Dev.	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	27 Jul 2018	5,466	2,734	-		-	Option to Acquire Common Stock
Frank A. Carchedi	Executive VP, Corp. Dev.	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	27 Jul 2018	2,766	5,534	-		-	Option to Acquire Common Stock
Frank A. Carchedi	Executive VP, Corp. Dev.	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	27 Jul 2018	1,032	0	-		-	Option to Acquire Common Stock
Frank A. Carchedi	Executive VP, Corp. Dev.	Payment of exercise price or tax liability using portion of securities received from the company at price $ 421.80 per share.	27 Jul 2018	474	21,887 (0%)	0%	421.8	199,933	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Exercise or conversion of derivative security received from the company (such as an option) at price $ 193.69 per share.	27 Jul 2018	1,032	22,361 (0%)	0%	193.7	199,888	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Sale of securities on an exchange or to another person at price $ 421.87 per share.	27 Jul 2018	32,671	21,329 (0%)	0%	421.9	13,782,915	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Exercise or conversion of derivative security received from the company (such as an option) at price $ 204.91 per share.	27 Jul 2018	2,766	54,000 (0%)	0%	204.9	566,781	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Exercise or conversion of derivative security received from the company (such as an option) at price $ 182.75 per share.	27 Jul 2018	5,466	51,234 (0%)	0%	182.8	998,912	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Exercise or conversion of derivative security received from the company (such as an option) at price $ 201.04 per share.	27 Jul 2018	11,100	38,300 (0%)	0%	201.0	2,231,544	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	27 Jul 2018	4,700	9,400	-		-	Option to Acquire Common Stock
Scott T. Wheeler	Chief Financial Officer	Sale of securities on an exchange or to another person at price $ 426.02 per share.	27 Jul 2018	4,700	28,523 (0%)	0%	426.0	2,002,294	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Exercise or conversion of derivative security received from the company (such as an option) at price $ 204.91 per share.	27 Jul 2018	4,700	33,223 (0%)	0%	204.9	963,077	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 380.86 per share.	31 May 2018	71	10,471 (0%)	0%	380.9	27,041	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 380.84 per share.	27 May 2018	62	10,542 (0%)	0%	380.8	23,612	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 380.83 per share.	27 May 2018	18	10,604 (0%)	0%	380.8	6,855	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Sale of securities on an exchange or to another person at price $ 369.05 per share.	26 Apr 2018	5,839	119,831 (0%)	0%	369.1	2,154,883	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Sale of securities on an exchange or to another person at price $ 371.15 per share.	26 Apr 2018	11,200	125,670 (0%)	0%	371.2	4,156,880	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Sale of securities on an exchange or to another person at price $ 372.34 per share.	26 Apr 2018	7,782	136,870 (0%)	0%	372.3	2,897,550	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 362.68 per share.	31 Mar 2018	3,026	144,652 (0%)	0%	362.7	1,097,470	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Payment of exercise price or tax liability using portion of securities received from the company at price $ 362.68 per share.	31 Mar 2018	724	27,200 (0%)	0%	362.7	262,580	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Payment of exercise price or tax liability using portion of securities received from the company at price $ 362.68 per share.	31 Mar 2018	1,017	26,935 (0%)	0%	362.7	368,846	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 362.68 per share.	31 Mar 2018	1,239	28,523 (0%)	0%	362.7	449,361	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 362.68 per share.	31 Mar 2018	183	10,622 (0%)	0%	362.7	66,370	Common Stock, par value $0.01 per share
John W. Hill	None	Sale of securities on an exchange or to another person at price $ 361.28 per share.	29 Mar 2018	1,150	4,498 (0%)	0%	361.3	415,472	Common Stock, par value $0.01 per share
Michael R. Klein	None	Sale of securities on an exchange or to another person at price $ 361.61 per share.	22 Mar 2018	3,000	289,729 (0%)	0%	361.6	1,084,830	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 361.22 per share.	11 Mar 2018	2,913	147,678 (0%)	0%	361.2	1,052,234	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Payment of exercise price or tax liability using portion of securities received from the company at price $ 361.22 per share.	11 Mar 2018	660	27,924 (0%)	0%	361.2	238,405	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Payment of exercise price or tax liability using portion of securities received from the company at price $ 361.22 per share.	11 Mar 2018	738	27,952 (0%)	0%	361.2	266,580	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Exercise or conversion of derivative security received from the company (such as an option) at price $ 102.16 per share.	07 Mar 2018	12,100	40,684 (0%)	0%	102.2	1,236,136	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	07 Mar 2018	12,100	0	-		-	Option to Acquire Common Stock
Frank A. Carchedi	Executive VP, Corp. Dev.	Sale of securities on an exchange or to another person at price $ 356.09 per share.	07 Mar 2018	12,100	28,584 (0%)	0%	356.1	4,308,689	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Payment of exercise price or tax liability using portion of securities received from the company at price $ 348.28 per share.	05 Mar 2018	8,605	150,591 (0%)	0%	348.3	2,996,949	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Payment of exercise price or tax liability using portion of securities received from the company at price $ 348.28 per share.	05 Mar 2018	1,889	28,584 (0%)	0%	348.3	657,901	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Sale of securities on an exchange or to another person at price $ 353.69 per share.	05 Mar 2018	1,250	29,762 (0%)	0%	353.7	442,113	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	02 Mar 2018	3,768	2,400	-		-	Option to Acquire Common Stock
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 182.75 per share.	02 Mar 2018	3,000	38,192 (0%)	0%	182.8	548,250	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 193.69 per share.	02 Mar 2018	3,768	35,192 (0%)	0%	193.7	729,824	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Payment of exercise price or tax liability using portion of securities received from the company at price $ 348.28 per share.	02 Mar 2018	1,581	28,690 (0%)	0%	348.3	550,631	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Sale of securities on an exchange or to another person at price $ 348.19 per share.	02 Mar 2018	6,768	31,424 (0%)	0%	348.2	2,356,550	Common Stock, par value $0.01 per share
Matthew Linnington	Executive VP, Sales	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	02 Mar 2018	3,000	6,000	-		-	Option to Acquire Common Stock
Matthew Linnington	Executive VP, Sales	Sale of securities on an exchange or to another person at price $ 348.45 per share.	02 Mar 2018	1,153	30,271 (0%)	0%	348.5	401,763	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Grant, award, or other acquisition of securities at price $ 0.00 per share.	28 Feb 2018	5,460	30,473 (0%)	0%		0	Common Stock, par value $0.01 per share
Frank A. Carchedi	Executive VP, Corp. Dev.	Grant, award, or other acquisition of securities at price $ 0.00 per share.	28 Feb 2018	6,500	6,500	-		-	Option to Acquire Common Stock
Matthew Linnington	Executive VP, Sales	Grant, award, or other acquisition of securities at price $ 0.00 per share.	28 Feb 2018	6,000	6,000	-		-	Option to Acquire Common Stock
Matthew Linnington	Executive VP, Sales	Grant, award, or other acquisition of securities at price $ 0.00 per share.	28 Feb 2018	5,020	31,424 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	28 Feb 2018	8,860	31,012 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Grant, award, or other acquisition of securities at price $ 0.00 per share.	28 Feb 2018	10,800	10,800	-		-	Option to Acquire Common Stock
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	28 Feb 2018	6,500	6,500	-		-	Option to Acquire Common Stock
Lisa C. Ruggles	Senior VP, Global Research	Grant, award, or other acquisition of securities at price $ 0.00 per share.	28 Feb 2018	5,460	10,805 (0%)	0%		0	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	27 Feb 2018	25,300	159,196 (0%)	0%		0	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 57.16 per share.	27 Feb 2018	40,051	173,947 (0%)	0%	57.2	2,289,315	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 58.95 per share.	27 Feb 2018	40,004	213,951 (0%)	0%	59.0	2,358,236	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Sale of securities on an exchange or to another person at price $ 347.10 per share.	27 Feb 2018	80,055	133,896 (0%)	0%	347.1	27,787,091	Common Stock, par value $0.01 per share
Andrew C. Florance	Director, President and CEO	Grant, award, or other acquisition of securities at price $ 0.00 per share.	27 Feb 2018	31,000	31,000	-		-	Option to Acquire Common Stock
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	27 Feb 2018	40,004	0	-		-	Option to Acquire Common Stock
Andrew C. Florance	Director, President and CEO	Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share.	27 Feb 2018	40,051	0	-		-	Option to Acquire Common Stock
Michael R. Klein	None	Gift of securities by or to the insider at price $ 0.00 per share.	26 Feb 2018	8,453	302,729 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	None	Gift of securities by or to the insider at price $ 0.00 per share.	26 Feb 2018	10,000	292,729 (0%)	0%		0	Common Stock, par value $0.01 per share
Scott T. Wheeler	Chief Financial Officer	Payment of exercise price or tax liability using portion of securities received from the company at price $ 314.44 per share.	11 Jan 2018	1,176	22,152 (0%)	0%	314.4	369,781	Common Stock, par value $0.01 per share
Lisa C. Ruggles	Senior VP, Global Research	Payment of exercise price or tax liability using portion of securities received from the company at price $ 296.95 per share.	31 Dec 2017	185	5,345 (0%)	0%	297.0	54,936	Common Stock, par value $0.01 per share
Christopher J. Nassetta	None	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Sep 2017	720	26,555 (0%)	0%		0	Common Stock, par value $0.01 per share
John W. Hill	None	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Sep 2017	745	5,648 (0%)	0%		0	Common Stock, par value $0.01 per share
John W. Hill	None	Gift of securities by or to the insider at price $ 0.00 per share.	13 Sep 2017	50	4,903 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael J. Glosserman	None	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Sep 2017	713	8,871 (0%)	0%		0	Common Stock, par value $0.01 per share
Michael R. Klein	None	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Sep 2017	713	311,182 (0%)	0%		0	Common Stock, par value $0.01 per share
Warren H. Haber	None	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Sep 2017	691	120,596 (0%)	0%		0	Common Stock, par value $0.01 per share
David J. Steinberg	None	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Sep 2017	691	6,535 (0%)	0%		0	Common Stock, par value $0.01 per share
Laura Cox Kaplan	None	Grant, award, or other acquisition of securities at price $ 0.00 per share.	13 Sep 2017	658	1,513 (0%)	0%		0	Common Stock, par value $0.01 per share

*All Values are in $ Million

Client Category: Promoter/ KMP/ Director / Immediate Relatives / Employee / etc
Security Type: Share/ Warrants / Convertible Debentures

Data as reported to USA Exchanges

View All The Insider Trades disclosures

Insider Trading disclosures for Costar Group, Inc.

The latest disclosure was made by Frank Simuro in Costar Group, Inc. where a trade of 5,700 Common Stock, par value $0.01 per share done at an average price of $78.7 was reported to US exchanges on March 15, 2025.

Screeners based on Insider Trading and SAST parameters