{"transactions":[{"id":728083,"issuer":{"id":3416,"kind":"organization","name":"COSTAR GROUP, INC."},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2026-06-25T01:13:39.000Z","date":"2026-06-23","kind":"grant","planned":false,"acquired":true,"shares":8262,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The restricted stock award vests in full on the earlier of either the first anniversary of the grant date or the date of the Company's 2027 Annual Meeting of Stockholders."}],"balance_after":26539,"source":{"system":"sec-edgar","filing":"0001390194-26-000002","document":"wk-form4_1782350016.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000139019426000002/wk-form4_1782350016.xml","form_type":"4"}},{"id":1006378,"issuer":{"id":3014,"kind":"organization","name":"CARDINAL HEALTH INC"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-11-06T21:20:42.000Z","date":"2025-11-05","kind":"grant","planned":false,"acquired":true,"shares":1067,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Grant of restricted share units that will vest on November 5, 2026, except if the 2026 Annual Meeting of Shareholders is prior to November 5, 2026, then the restricted share units will vest on the date of the 2026 Annual Meeting of Shareholders."}],"balance_after":2116,"source":{"system":"sec-edgar","filing":"0001390194-25-000006","document":"wk-form4_1762463959.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/721371/000139019425000006/wk-form4_1762463959.xml","form_type":"4"}},{"id":1043208,"issuer":{"id":3416,"kind":"organization","name":"COSTAR GROUP, INC."},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2025-09-11T21:41:27.000Z","date":"2025-09-09","kind":"grant","planned":false,"acquired":true,"shares":3121,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":18277,"source":{"system":"sec-edgar","filing":"0001390194-25-000005","document":"wk-form4_1757626884.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000139019425000005/wk-form4_1757626884.xml","form_type":"4"}},{"id":1202561,"issuer":{"id":3014,"kind":"organization","name":"CARDINAL HEALTH INC"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-03-18T20:20:20.000Z","date":"2025-03-15","kind":"grant","planned":false,"acquired":true,"shares":1049,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Grant of restricted share units that will vest on March 15, 2026."}],"balance_after":1049,"source":{"system":"sec-edgar","filing":"0000721371-25-000029","document":"wk-form4_1742329213.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/721371/000072137125000029/wk-form4_1742329213.xml","form_type":"4"}},{"id":1441238,"issuer":{"id":3416,"kind":"organization","name":"COSTAR GROUP, INC."},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2024-08-05T20:13:41.000Z","date":"2024-07-17","kind":"grant","planned":false,"acquired":true,"shares":3293,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":15156,"source":{"system":"sec-edgar","filing":"0001057352-24-000112","document":"wk-form4_1722888813.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000105735224000112/wk-form4_1722888813.xml","form_type":"4"}},{"id":1682916,"issuer":{"id":1538,"kind":"organization","name":"Definitive Healthcare Corp.","symbol":"DH"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2024-01-09T21:30:15.000Z","date":"2024-01-07","kind":"tax_withholding","planned":false,"acquired":false,"shares":14207,"price":9,"value":127863.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units."}],"balance_after":1201638,"source":{"system":"sec-edgar","filing":"0001209191-24-001241","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1861795/000120919124001241/doc4.xml","form_type":"4"}},{"id":1747731,"issuer":{"id":1538,"kind":"organization","name":"Definitive Healthcare Corp.","symbol":"DH"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2023-11-07T21:30:33.000Z","date":"2023-11-04","kind":"tax_withholding","planned":false,"acquired":false,"shares":12656,"price":7.27,"value":92009.12,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units."}],"balance_after":1215845,"source":{"system":"sec-edgar","filing":"0001209191-23-054609","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1861795/000120919123054609/doc4.xml","form_type":"4"}},{"id":1752593,"issuer":{"id":3416,"kind":"organization","name":"COSTAR GROUP, INC."},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2023-11-01T20:12:08.000Z","date":"2023-10-30","kind":"grant","planned":false,"acquired":true,"shares":3532,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":11863,"source":{"system":"sec-edgar","filing":"0001057352-23-000136","document":"wk-form4_1698869513.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000105735223000136/wk-form4_1698869513.xml","form_type":"4"}},{"id":1762702,"issuer":{"id":1538,"kind":"organization","name":"Definitive Healthcare Corp.","symbol":"DH"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2023-10-10T21:00:59.000Z","date":"2023-10-07","kind":"tax_withholding","planned":false,"acquired":false,"shares":20016,"price":7.2,"value":144115.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units."}],"balance_after":1228501,"source":{"system":"sec-edgar","filing":"0001209191-23-052546","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1861795/000120919123052546/doc4.xml","form_type":"4"}},{"id":1813027,"issuer":{"id":1538,"kind":"organization","name":"Definitive Healthcare Corp.","symbol":"DH"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2023-08-08T20:30:14.000Z","date":"2023-08-04","kind":"tax_withholding","planned":false,"acquired":false,"shares":12657,"price":11.31,"value":143150.67,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units."}],"balance_after":1248517,"source":{"system":"sec-edgar","filing":"0001209191-23-044996","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1861795/000120919123044996/doc4.xml","form_type":"4"}},{"id":1831669,"issuer":{"id":1538,"kind":"organization","name":"Definitive Healthcare Corp.","symbol":"DH"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2023-07-11T20:30:10.000Z","date":"2023-07-07","kind":"tax_withholding","planned":false,"acquired":false,"shares":20016,"price":10.67,"value":213570.72,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units."}],"balance_after":1261174,"source":{"system":"sec-edgar","filing":"0001209191-23-042016","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1861795/000120919123042016/doc4.xml","form_type":"4"}},{"id":1901108,"issuer":{"id":1538,"kind":"organization","name":"Definitive Healthcare Corp.","symbol":"DH"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2023-05-08T20:15:27.000Z","date":"2023-05-04","kind":"tax_withholding","planned":false,"acquired":false,"shares":53587,"price":9.9,"value":530511.3,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units."}],"balance_after":1281190,"source":{"system":"sec-edgar","filing":"0001209191-23-027929","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1861795/000120919123027929/doc4.xml","form_type":"4"}},{"id":1921858,"issuer":{"id":1538,"kind":"organization","name":"Definitive Healthcare Corp.","symbol":"DH"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2023-04-11T20:15:28.000Z","date":"2023-04-07","kind":"tax_withholding","planned":false,"acquired":false,"shares":15616,"price":10.47,"value":163499.52,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units."}],"balance_after":1334777,"source":{"system":"sec-edgar","filing":"0001209191-23-023998","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1861795/000120919123023998/doc4.xml","form_type":"4"}},{"id":2003837,"issuer":{"id":1538,"kind":"organization","name":"Definitive Healthcare Corp.","symbol":"DH"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2023-02-21T21:31:11.000Z","date":"2023-02-16","kind":"grant","acquired":true,"shares":368422,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock units (\"RSUs\"), each representing a contingent right to receive one share of the Issuer's Class A Common Stock, par value $0.001. The RSUs vest over a four-year period, with 25% of the RSUs vesting on February 1, 2024, followed by quarterly vesting of 6.25% every three months thereafter over the subsequent three years, in each case subject to the Reporting Person's continued service with the Issuer through each such vesting date."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents restricted stock units (\"RSUs\"), each representing a contingent right to receive one share of the Issuer's Class A Common Stock, par value $0.001. The RSUs vest over a four-year period, with 25% of the RSUs vesting on February 1, 2024, followed by quarterly vesting of 6.25% every three months thereafter over the subsequent three years, in each case subject to the Reporting Person's continued service with the Issuer through each such vesting date."}],"balance_after":1350393,"source":{"system":"sec-edgar","filing":"0001209191-23-011183","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1861795/000120919123011183/doc4.xml","form_type":"4"}},{"id":2057609,"issuer":{"id":1538,"kind":"organization","name":"Definitive Healthcare Corp.","symbol":"DH"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2023-01-10T21:15:18.000Z","date":"2023-01-07","kind":"tax_withholding","acquired":false,"shares":14026,"price":10.41,"value":146010.66,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units."}],"balance_after":981971,"source":{"system":"sec-edgar","filing":"0001209191-23-002776","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1861795/000120919123002776/doc4.xml","form_type":"4"}},{"id":2138413,"issuer":{"id":1538,"kind":"organization","name":"Definitive Healthcare Corp.","symbol":"DH"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Class A Common Stock","published_at":"2022-10-12T20:15:12.000Z","date":"2022-10-07","kind":"tax_withholding","acquired":false,"shares":70658,"price":14.82,"value":1047151.56,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units."}],"balance_after":995997,"source":{"system":"sec-edgar","filing":"0001209191-22-053458","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1861795/000120919122053458/doc4.xml","form_type":"4"}},{"id":2158689,"issuer":{"id":3416,"kind":"organization","name":"COSTAR GROUP, INC."},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2022-09-15T20:50:52.000Z","date":"2022-09-14","kind":"grant","acquired":true,"shares":3380,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents all shares of Common Stock owned, consisting of 1,232 shares of Common Stock and 7,099 shares of Common Stock subject to unvested Restricted Stock grants."}],"balance_after":8331,"source":{"system":"sec-edgar","filing":"0001057352-22-000103","document":"wf-form4_166327503844146.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000105735222000103/wf-form4_166327503844146.xml","form_type":"4"}},{"id":2280984,"issuer":{"id":1538,"kind":"organization","name":"Definitive Healthcare Corp.","symbol":"DH"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Class A Common Stock","published_at":"2022-05-05T21:15:42.000Z","date":"2022-05-03","kind":"grant","acquired":true,"shares":83333,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares of Common Stock issuable pursuant to RSUs as follows: 83,333 RSUs that vest 25% on the one year anniversary of May 4, 2022, followed by quarterly vesting of 6.25% per quarter until fully vested over the subsequent three years, subject to earlier forfeiture or acceleration."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents shares of Common Stock issuable pursuant to RSUs as follows: 83,333 RSUs that vest 25% on the one year anniversary of May 4, 2022, followed by quarterly vesting of 6.25% per quarter until fully vested over the subsequent three years, subject to earlier forfeiture or acceleration."}],"balance_after":1066655,"source":{"system":"sec-edgar","filing":"0000899243-22-016862","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1861795/000089924322016862/doc4.xml","form_type":"4"}},{"id":2280983,"issuer":{"id":1538,"kind":"organization","name":"Definitive Healthcare Corp.","symbol":"DH"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Class A Common Stock","published_at":"2022-05-05T21:15:42.000Z","date":"2022-05-03","kind":"grant","acquired":true,"shares":333322,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of the Issuer's Class A Common Stock, par value $0.001 (\"Common Stock\") issuable pursuant to restricted stock units (\"RSUs\") as follows: 333,322 RSUs that vest 30% on the one year anniversary of May 4, 2022, followed by quarterly vesting of 7% per quarter until fully vested over the subsequent 30 months, subject to earlier forfeiture or acceleration."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents shares of the Issuer's Class A Common Stock, par value $0.001 (\"Common Stock\") issuable pursuant to restricted stock units (\"RSUs\") as follows: 333,322 RSUs that vest 30% on the one year anniversary of May 4, 2022, followed by quarterly vesting of 7% per quarter until fully vested over the subsequent 30 months, subject to earlier forfeiture or acceleration."}],"balance_after":983322,"source":{"system":"sec-edgar","filing":"0000899243-22-016862","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1861795/000089924322016862/doc4.xml","form_type":"4"}},{"id":2545628,"issuer":{"id":1538,"kind":"organization","name":"Definitive Healthcare Corp.","symbol":"DH"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Class A Common Stock","published_at":"2021-10-08T22:46:43.000Z","date":"2021-10-07","kind":"grant","acquired":true,"shares":650000,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock units (\"RSUs\") to receive one share of the Issuer's Class A Common Stock, par value $0.001 as follows: 433,550 RSUs that vest 25% on the one year anniversary of the grant date, followed by quarterly vesting of 6.25% per quarter until fully vested, over the subsequent three years, and 216,450 RSUs that vest 33% on the one year anniversary of the grant date, followed by quarterly vesting of 8.33% per quarter until fully vested, over the subsequent two years, in each case subject to earlier forfeiture or acceleration."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents restricted stock units (\"RSUs\") to receive one share of the Issuer's Class A Common Stock, par value $0.001 as follows: 433,550 RSUs that vest 25% on the one year anniversary of the grant date, followed by quarterly vesting of 6.25% per quarter until fully vested, over the subsequent three years, and 216,450 RSUs that vest 33% on the one year anniversary of the grant date, followed by quarterly vesting of 8.33% per quarter until fully vested, over the subsequent two years, in each case subject to earlier forfeiture or acceleration."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents restricted stock units (\"RSUs\") to receive one share of the Issuer's Class A Common Stock, par value $0.001 as follows: 433,550 RSUs that vest 25% on the one year anniversary of the grant date, followed by quarterly vesting of 6.25% per quarter until fully vested, over the subsequent three years, and 216,450 RSUs that vest 33% on the one year anniversary of the grant date, followed by quarterly vesting of 8.33% per quarter until fully vested, over the subsequent two years, in each case subject to earlier forfeiture or acceleration."}],"balance_after":650000,"source":{"system":"sec-edgar","filing":"0000899243-21-039755","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1861795/000089924321039755/doc4.xml","form_type":"4"}},{"id":2566450,"issuer":{"id":3416,"kind":"organization","name":"COSTAR GROUP, INC."},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2021-09-17T20:26:55.000Z","date":"2021-09-15","kind":"grant","acquired":true,"shares":2811,"price":88.95,"value":250038.45,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On June 25, 2021, CoStar Group, Inc. effected a 10-for-1 stock split. The number of shares reported throughout this Form 4 have been adjusted to reflect the stock split."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents all shares of Common Stock owned, consisting of 4,951 shares of Common Stock subject to unvested Restricted Stock grants."}],"balance_after":4951,"source":{"system":"sec-edgar","filing":"0001057352-21-000096","document":"wf-form4_163191039918519.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000105735221000096/wf-form4_163191039918519.xml","form_type":"4"}},{"id":3022504,"issuer":{"id":3416,"kind":"organization","name":"COSTAR GROUP, INC."},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.01 per share","published_at":"2020-09-25T20:33:11.000Z","date":"2020-09-24","kind":"grant","acquired":true,"shares":214,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents all shares of Common Stock owned, consisting of 0 shares of Common Stock and 214 shares of Common Stock subject to unvested Restricted Stock grants."}],"balance_after":214,"source":{"system":"sec-edgar","filing":"0001057352-20-000113","document":"wf-form4_160106597661387.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000105735220000113/wf-form4_160106597661387.xml","form_type":"4"}},{"id":4154638,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"LTIP Options","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":353892,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F13","text":"Each \"LTIP Option,\" which represents a non-qualified stock option granted pursuant to the 2014 supplemental long-term incentive program that is not vested in accordance with its terms and outstanding immediately prior to the Merger, was assumed and converted into an option to purchase a number of shares of UnitedHealth common stock, on the same terms and conditions as were applicable immediately prior to the Merger, equal to the product of (i) the total number of shares of Issuer Common Stock subject to such option, multiplied by (ii) the Equity Award Conversion Ratio, with any fractional shares rounded down to the next lower whole number of shares, and with performance-vesting conditions equitably adjusted pursuant to the Merger Agreement to reflect the Merger. (continued in footnote 14)"},{"field":"price","element":"transactionPricePerShare","label":"F14","text":"The exercise price per share of such option will be equal to the quotient obtained by dividing (A) the Merger Consideration by (B) the Equity Award Conversion Ratio, with any fractional cents rounded up to the next higher number of whole cents."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F12","text":"Stock options vest if performance conditions are met under the special long-term incentive program as described in the Issuer's Definitive Proxy Statement filed April 21, 2017."}],"balance_after":0,"derivative":{"exercise_price":51.43,"expiration_date":"2021-06-23","underlying":"Common Stock","underlying_shares":353892},"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154637,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Non-LTIP Options","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":57752,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Each \"Non-LTIP Option,\" which represents a non-qualified stock option other than an LTIP Option (as defined below) that is outstanding immediately prior to the Merger, whether vested or unvested, was assumed and converted into a non-qualified stock option to purchase a number of shares of UnitedHealth common stock, on the same terms and conditions as were applicable immediately prior to the Merger (except that any performance-based vesting conditions applicable to such option no longer apply), equal to the product of (i) the total number of shares of Issuer Common Stock subject to such option, multiplied by (ii) the Equity Award Conversion Ratio, with any fractional shares rounded down to the next lower whole number of shares.  The exercise price per share of such option will be equal to the quotient obtained by dividing (A) the Per Share Merger Consideration by (B) the Equity Award Conversion Ratio, with any fractional cents rounded up to the next higher number of whole cents."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F11","text":"The options to purchase the Issuer Common Stock become exercisable in four equal annual installments beginning on April 1, 2018."}],"balance_after":0,"derivative":{"exercise_price":46.95,"expiration_date":"2024-03-28","underlying":"Common Stock","underlying_shares":57752},"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154636,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Non-LTIP Options","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":152552,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Each \"Non-LTIP Option,\" which represents a non-qualified stock option other than an LTIP Option (as defined below) that is outstanding immediately prior to the Merger, whether vested or unvested, was assumed and converted into a non-qualified stock option to purchase a number of shares of UnitedHealth common stock, on the same terms and conditions as were applicable immediately prior to the Merger (except that any performance-based vesting conditions applicable to such option no longer apply), equal to the product of (i) the total number of shares of Issuer Common Stock subject to such option, multiplied by (ii) the Equity Award Conversion Ratio, with any fractional shares rounded down to the next lower whole number of shares.  The exercise price per share of such option will be equal to the quotient obtained by dividing (A) the Per Share Merger Consideration by (B) the Equity Award Conversion Ratio, with any fractional cents rounded up to the next higher number of whole cents."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F10","text":"The options to purchase the Issuer Common Stock become exercisable in four equal annual installments beginning on March 2, 2017."}],"balance_after":0,"derivative":{"exercise_price":28.2,"expiration_date":"2023-03-02","underlying":"Common Stock","underlying_shares":152552},"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154635,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Non-LTIP Options","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":139900,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Each \"Non-LTIP Option,\" which represents a non-qualified stock option other than an LTIP Option (as defined below) that is outstanding immediately prior to the Merger, whether vested or unvested, was assumed and converted into a non-qualified stock option to purchase a number of shares of UnitedHealth common stock, on the same terms and conditions as were applicable immediately prior to the Merger (except that any performance-based vesting conditions applicable to such option no longer apply), equal to the product of (i) the total number of shares of Issuer Common Stock subject to such option, multiplied by (ii) the Equity Award Conversion Ratio, with any fractional shares rounded down to the next lower whole number of shares.  The exercise price per share of such option will be equal to the quotient obtained by dividing (A) the Per Share Merger Consideration by (B) the Equity Award Conversion Ratio, with any fractional cents rounded up to the next higher number of whole cents."}],"balance_after":0,"derivative":{"exercise_price":28.2,"exercise_date":"2017-03-02","expiration_date":"2023-03-02","underlying":"Common Stock","underlying_shares":139900},"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154634,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Non-LTIP Options","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":85224,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Each \"Non-LTIP Option,\" which represents a non-qualified stock option other than an LTIP Option (as defined below) that is outstanding immediately prior to the Merger, whether vested or unvested, was assumed and converted into a non-qualified stock option to purchase a number of shares of UnitedHealth common stock, on the same terms and conditions as were applicable immediately prior to the Merger (except that any performance-based vesting conditions applicable to such option no longer apply), equal to the product of (i) the total number of shares of Issuer Common Stock subject to such option, multiplied by (ii) the Equity Award Conversion Ratio, with any fractional shares rounded down to the next lower whole number of shares.  The exercise price per share of such option will be equal to the quotient obtained by dividing (A) the Per Share Merger Consideration by (B) the Equity Award Conversion Ratio, with any fractional cents rounded up to the next higher number of whole cents."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The options to purchase the Issuer Common Stock become exercisable in four equal annual installments beginning on April 10, 2016."}],"balance_after":0,"derivative":{"exercise_price":53.42,"expiration_date":"2022-04-10","underlying":"Common Stock","underlying_shares":85224},"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154633,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Non-LTIP Options","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":57612,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Each \"Non-LTIP Option,\" which represents a non-qualified stock option other than an LTIP Option (as defined below) that is outstanding immediately prior to the Merger, whether vested or unvested, was assumed and converted into a non-qualified stock option to purchase a number of shares of UnitedHealth common stock, on the same terms and conditions as were applicable immediately prior to the Merger (except that any performance-based vesting conditions applicable to such option no longer apply), equal to the product of (i) the total number of shares of Issuer Common Stock subject to such option, multiplied by (ii) the Equity Award Conversion Ratio, with any fractional shares rounded down to the next lower whole number of shares.  The exercise price per share of such option will be equal to the quotient obtained by dividing (A) the Per Share Merger Consideration by (B) the Equity Award Conversion Ratio, with any fractional cents rounded up to the next higher number of whole cents."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"The options to purchase the Issuer Common Stock become exercisable in four equal annual installments beginning on April 11, 2015."}],"balance_after":0,"derivative":{"exercise_price":57.83,"expiration_date":"2021-04-11","underlying":"Common Stock","underlying_shares":57612},"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154632,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Non-LTIP Options","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":46508,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Each \"Non-LTIP Option,\" which represents a non-qualified stock option other than an LTIP Option (as defined below) that is outstanding immediately prior to the Merger, whether vested or unvested, was assumed and converted into a non-qualified stock option to purchase a number of shares of UnitedHealth common stock, on the same terms and conditions as were applicable immediately prior to the Merger (except that any performance-based vesting conditions applicable to such option no longer apply), equal to the product of (i) the total number of shares of Issuer Common Stock subject to such option, multiplied by (ii) the Equity Award Conversion Ratio, with any fractional shares rounded down to the next lower whole number of shares.  The exercise price per share of such option will be equal to the quotient obtained by dividing (A) the Per Share Merger Consideration by (B) the Equity Award Conversion Ratio, with any fractional cents rounded up to the next higher number of whole cents."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The options to purchase the Issuer Common Stock become exercisable in two equal annual installments beginning on April 18, 2016."}],"balance_after":0,"derivative":{"exercise_price":47.87,"expiration_date":"2020-04-18","underlying":"Common Stock","underlying_shares":46508},"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154631,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Non-LTIP Options","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":46508,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Each \"Non-LTIP Option,\" which represents a non-qualified stock option other than an LTIP Option (as defined below) that is outstanding immediately prior to the Merger, whether vested or unvested, was assumed and converted into a non-qualified stock option to purchase a number of shares of UnitedHealth common stock, on the same terms and conditions as were applicable immediately prior to the Merger (except that any performance-based vesting conditions applicable to such option no longer apply), equal to the product of (i) the total number of shares of Issuer Common Stock subject to such option, multiplied by (ii) the Equity Award Conversion Ratio, with any fractional shares rounded down to the next lower whole number of shares.  The exercise price per share of such option will be equal to the quotient obtained by dividing (A) the Per Share Merger Consideration by (B) the Equity Award Conversion Ratio, with any fractional cents rounded up to the next higher number of whole cents."}],"balance_after":0,"derivative":{"exercise_price":47.87,"exercise_date":"2016-04-18","expiration_date":"2018-04-18","underlying":"Common Stock","underlying_shares":46508},"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154630,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Non-LTIP Options","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":37708,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Each \"Non-LTIP Option,\" which represents a non-qualified stock option other than an LTIP Option (as defined below) that is outstanding immediately prior to the Merger, whether vested or unvested, was assumed and converted into a non-qualified stock option to purchase a number of shares of UnitedHealth common stock, on the same terms and conditions as were applicable immediately prior to the Merger (except that any performance-based vesting conditions applicable to such option no longer apply), equal to the product of (i) the total number of shares of Issuer Common Stock subject to such option, multiplied by (ii) the Equity Award Conversion Ratio, with any fractional shares rounded down to the next lower whole number of shares.  The exercise price per share of such option will be equal to the quotient obtained by dividing (A) the Per Share Merger Consideration by (B) the Equity Award Conversion Ratio, with any fractional cents rounded up to the next higher number of whole cents."}],"balance_after":0,"derivative":{"exercise_price":43.83,"exercise_date":"2017-04-17","expiration_date":"2019-04-17","underlying":"Common Stock","underlying_shares":37708},"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154629,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Non-LTIP Options","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":44220,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Each \"Non-LTIP Option,\" which represents a non-qualified stock option other than an LTIP Option (as defined below) that is outstanding immediately prior to the Merger, whether vested or unvested, was assumed and converted into a non-qualified stock option to purchase a number of shares of UnitedHealth common stock, on the same terms and conditions as were applicable immediately prior to the Merger (except that any performance-based vesting conditions applicable to such option no longer apply), equal to the product of (i) the total number of shares of Issuer Common Stock subject to such option, multiplied by (ii) the Equity Award Conversion Ratio, with any fractional shares rounded down to the next lower whole number of shares.  The exercise price per share of such option will be equal to the quotient obtained by dividing (A) the Per Share Merger Consideration by (B) the Equity Award Conversion Ratio, with any fractional cents rounded up to the next higher number of whole cents."}],"balance_after":0,"derivative":{"exercise_price":24.23,"exercise_date":"2016-04-15","expiration_date":"2018-04-15","underlying":"Common Stock","underlying_shares":44220},"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154628,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":14552,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Represents restricted stock units (each, an \"RSU\") that were outstanding immediately prior to the Merger. By their terms, prior to the Merger, each RSU represented a contingent right to one share of Issuer Common Stock.  Each RSU was assumed and converted into an equivalent UnitedHealth award denominated in shares of UnitedHealth common stock, on the same terms and conditions as were applicable immediately prior to the Merger, equal to the product of (i) the total number of shares of Issuer Common Stock subject to such awards, multiplied by (ii) 0.254270199, which represents the quotient obtained by dividing (A) the Per-Share Merger Consideration by (B) volume weighted average closing sale price of UnitedHealth common stock for the five full trading days ending on and including the third business day prior to the Merger (the \"Equity Award Conversion Ratio\"), with any fractional shares rounded down to the next lower whole number of shares."},{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The RSUs vest in four equal installments on May 10, 2016; April 10, 2017; April 10, 2018; and April 10, 2019, unless deferred. Upon vesting, each RSU is settled by the delivery of the underlying shares of common stock or payment of the current cash value of the vested shares, at the discretion of the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The RSUs vest in four equal installments on May 10, 2016; April 10, 2017; April 10, 2018; and April 10, 2019, unless deferred. Upon vesting, each RSU is settled by the delivery of the underlying shares of common stock or payment of the current cash value of the vested shares, at the discretion of the Issuer."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The RSUs vest in four equal installments on May 10, 2016; April 10, 2017; April 10, 2018; and April 10, 2019, unless deferred. Upon vesting, each RSU is settled by the delivery of the underlying shares of common stock or payment of the current cash value of the vested shares, at the discretion of the Issuer."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":14552},"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154627,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":6848,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Represents restricted stock units (each, an \"RSU\") that were outstanding immediately prior to the Merger. By their terms, prior to the Merger, each RSU represented a contingent right to one share of Issuer Common Stock.  Each RSU was assumed and converted into an equivalent UnitedHealth award denominated in shares of UnitedHealth common stock, on the same terms and conditions as were applicable immediately prior to the Merger, equal to the product of (i) the total number of shares of Issuer Common Stock subject to such awards, multiplied by (ii) 0.254270199, which represents the quotient obtained by dividing (A) the Per-Share Merger Consideration by (B) volume weighted average closing sale price of UnitedHealth common stock for the five full trading days ending on and including the third business day prior to the Merger (the \"Equity Award Conversion Ratio\"), with any fractional shares rounded down to the next lower whole number of shares."},{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The RSUs vest in four equal installments on May 11, 2015; April 11, 2016; April 11, 2017; and April 11, 2018, unless deferred. Upon vesting, each RSU is settled by the delivery of the underlying shares of common stock or payment of the current cash value of the vested shares, at the discretion of the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSUs vest in four equal installments on May 11, 2015; April 11, 2016; April 11, 2017; and April 11, 2018, unless deferred. Upon vesting, each RSU is settled by the delivery of the underlying shares of common stock or payment of the current cash value of the vested shares, at the discretion of the Issuer."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The RSUs vest in four equal installments on May 11, 2015; April 11, 2016; April 11, 2017; and April 11, 2018, unless deferred. Upon vesting, each RSU is settled by the delivery of the underlying shares of common stock or payment of the current cash value of the vested shares, at the discretion of the Issuer."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":6848},"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154626,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":44220,"ownership":{"direct":false,"nature":"By Trusts"},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Disposed of pursuant to the Merger Agreement and by virtue of the Merger, in which each share of the Issuer's common stock, par value $0.01 per share (\"Issuer Common Stock\"), issued and outstanding immediately prior to the completion of the Merger was converted into the right to receive $53.81 in cash, without interest (the \"Per Share Merger Consideration\"), consisting of (i) $52.65 in cash, plus (ii) an additional amount in cash equal to $1.16, calculated in accordance with the Merger Agreement based on the per-share, after-tax value of the Issuer's equity interests in Evolent Health, Inc. Pursuant to the Merger Agreement and by virtue of the Merger, each share of common stock of Merger Sub outstanding immediately prior to the Merger was converted into one share of Issuer Common Stock, as the surviving corporation in the Merger, and constitutes the only outstanding shares of the Issuer."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154625,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":193801,"ownership":{"direct":false,"nature":"By Trusts"},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Disposed of pursuant to the Merger Agreement and by virtue of the Merger, in which each share of the Issuer's common stock, par value $0.01 per share (\"Issuer Common Stock\"), issued and outstanding immediately prior to the completion of the Merger was converted into the right to receive $53.81 in cash, without interest (the \"Per Share Merger Consideration\"), consisting of (i) $52.65 in cash, plus (ii) an additional amount in cash equal to $1.16, calculated in accordance with the Merger Agreement based on the per-share, after-tax value of the Issuer's equity interests in Evolent Health, Inc. Pursuant to the Merger Agreement and by virtue of the Merger, each share of common stock of Merger Sub outstanding immediately prior to the Merger was converted into one share of Issuer Common Stock, as the surviving corporation in the Merger, and constitutes the only outstanding shares of the Issuer."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154624,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-11-21T17:03:47.000Z","date":"2017-11-17","kind":"disposition_to_issuer","acquired":false,"shares":19929,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"On November 17, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of August 28, 2017 (the \"Merger Agreement\"), by and among The Advisory Board Company (the \"Issuer\"), OptumInsight, Inc. (\"Optum\"), a wholly owned subsidiary of UnitedHealth Group Incorporated (\"UnitedHealth\"), and Apollo Merger Sub, Inc., a wholly owned subsidiary of Optum (\"Merger Sub\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Optum (the \"Merger\"). Immediately preceding the Merger, the Issuer completed the sale of its education business to Avatar Holdco, LLC and EAB Global, Inc. (collectively, \"Education Buyer\" and formed by Vista Equity Partners Fund VI, L.P.) pursuant to that certain Stock and Asset Purchase Agreement, dated August 28, 2017, by and among the Issuer and the Education Buyer."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Disposed of pursuant to the Merger Agreement and by virtue of the Merger, in which each share of the Issuer's common stock, par value $0.01 per share (\"Issuer Common Stock\"), issued and outstanding immediately prior to the completion of the Merger was converted into the right to receive $53.81 in cash, without interest (the \"Per Share Merger Consideration\"), consisting of (i) $52.65 in cash, plus (ii) an additional amount in cash equal to $1.16, calculated in accordance with the Merger Agreement based on the per-share, after-tax value of the Issuer's equity interests in Evolent Health, Inc. Pursuant to the Merger Agreement and by virtue of the Merger, each share of common stock of Merger Sub outstanding immediately prior to the Merger was converted into one share of Issuer Common Stock, as the surviving corporation in the Merger, and constitutes the only outstanding shares of the Issuer."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001209191-17-062119","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062119/doc4.xml","form_type":"4"}},{"id":4154559,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-11-21T16:59:54.000Z","date":"2017-04-11","kind":"tax_withholding","acquired":false,"shares":3486,"price":47.6,"value":165933.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"The original Form 4 incorrectly reported a disposition of 2,425 shares withheld to cover taxes, which was been corrected to show a disposition of 3,486 shares."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The original Form 4 incorrectly reported a price of $47.50, which was been corrected with a price of $47.60."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"The original Form 4 incorrectly reported 266,289 shares, which was been corrected to 264,965 shares beneficially owned following the reported transactions."}],"balance_after":264965,"source":{"system":"sec-edgar","filing":"0001209191-17-062107","document":"doc4a.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062107/doc4a.xml","form_type":"4/A","original_submission_date":"2017-04-12"}},{"id":4154558,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-11-21T16:59:54.000Z","date":"2017-04-10","kind":"tax_withholding","acquired":false,"shares":2839,"price":47.5,"value":134852.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The original Form 4 incorrectly reported a disposition of 2,576 shares withheld to cover taxes, which was been corrected to show a disposition of 2,839 shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The original Form 4 incorrectly reported 260,011 shares, which was been corrected to 259,478 shares beneficially owned following the reported transactions."}],"balance_after":259748,"source":{"system":"sec-edgar","filing":"0001209191-17-062107","document":"doc4a.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117062107/doc4a.xml","form_type":"4/A","original_submission_date":"2017-04-12"}},{"id":4348771,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2017-04-20T16:55:13.000Z","date":"2017-04-18","kind":"exercise","acquired":false,"shares":8554,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of the Company's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs vest in four equal installments on May 18, 2014; April 18, 2015; April 18, 2016; and April 18, 2017, unless deferred. Upon vesting, each RSU is settled by the delivery of the underlying shares of common stock or payment of the current cash value of the vested shares, at the discretion of the Company."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs vest in four equal installments on May 18, 2014; April 18, 2015; April 18, 2016; and April 18, 2017, unless deferred. Upon vesting, each RSU is settled by the delivery of the underlying shares of common stock or payment of the current cash value of the vested shares, at the discretion of the Company."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":8554},"source":{"system":"sec-edgar","filing":"0001209191-17-027734","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117027734/doc4.xml","form_type":"4"}},{"id":4348770,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-04-20T16:55:13.000Z","date":"2017-04-18","kind":"tax_withholding","acquired":false,"shares":4354,"price":46.95,"value":204420.3,"ownership":{"direct":true},"balance_after":270489,"source":{"system":"sec-edgar","filing":"0001209191-17-027734","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117027734/doc4.xml","form_type":"4"}},{"id":4348769,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-04-20T16:55:13.000Z","date":"2017-04-18","kind":"exercise","acquired":true,"shares":8554,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":274843,"source":{"system":"sec-edgar","filing":"0001209191-17-027734","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117027734/doc4.xml","form_type":"4"}},{"id":4353647,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock Options","published_at":"2017-04-12T21:33:22.000Z","date":"2017-04-10","kind":"exercise","acquired":false,"shares":11000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The options to purchase the Company's common stock became exercisable in in two equal annual installments beginning April 27, 2013."}],"balance_after":0,"derivative":{"exercise_price":16.58,"expiration_date":"2017-04-27","underlying":"Common Stock","underlying_shares":11000},"source":{"system":"sec-edgar","filing":"0001209191-17-026765","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117026765/doc4.xml","form_type":"4"}},{"id":4353646,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock Options","published_at":"2017-04-12T21:33:22.000Z","date":"2017-04-10","kind":"exercise","acquired":false,"shares":37708,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"The options to purchase the Company's common stock became exercisable in two equal annual installments beginning on April 17, 2013."}],"balance_after":0,"derivative":{"exercise_price":43.83,"expiration_date":"2017-04-17","underlying":"Common Stock","underlying_shares":37708},"source":{"system":"sec-edgar","filing":"0001209191-17-026765","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117026765/doc4.xml","form_type":"4"}},{"id":4353645,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2017-04-12T21:33:22.000Z","date":"2017-04-11","kind":"exercise","acquired":false,"shares":6848,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of the Company's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The RSUs vest in four equal installments on May 11, 2015; April 11, 2016; April 11, 2017; and April 11, 2018, unless deferred. Upon vesting, each RSU is settled by the delivery of the underlying shares of common stock or payment of the current cash value of the vested shares, at the discretion of the Company."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"The RSUs vest in four equal installments on May 11, 2015; April 11, 2016; April 11, 2017; and April 11, 2018, unless deferred. Upon vesting, each RSU is settled by the delivery of the underlying shares of common stock or payment of the current cash value of the vested shares, at the discretion of the Company."}],"balance_after":6848,"derivative":{"underlying":"Common Stock","underlying_shares":6848},"source":{"system":"sec-edgar","filing":"0001209191-17-026765","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117026765/doc4.xml","form_type":"4"}},{"id":4353644,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2017-04-12T21:33:22.000Z","date":"2017-04-10","kind":"exercise","acquired":false,"shares":7276,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of the Company's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The RSUs vest in four equal installments on May 10, 2016; April 10, 2017; April 10, 2018; and April 10, 2019, unless deferred. Upon vesting, each RSU is settled by the delivery of the underlying shares of common stock or payment of the current cash value of the vested shares, at the discretion of the Company."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"The RSUs vest in four equal installments on May 10, 2016; April 10, 2017; April 10, 2018; and April 10, 2019, unless deferred. Upon vesting, each RSU is settled by the delivery of the underlying shares of common stock or payment of the current cash value of the vested shares, at the discretion of the Company."}],"balance_after":14552,"derivative":{"underlying":"Common Stock","underlying_shares":7276},"source":{"system":"sec-edgar","filing":"0001209191-17-026765","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117026765/doc4.xml","form_type":"4"}},{"id":4353643,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-04-12T21:33:22.000Z","date":"2017-04-11","kind":"tax_withholding","acquired":false,"shares":2425,"price":47.5,"value":115187.5,"ownership":{"direct":true},"balance_after":266289,"source":{"system":"sec-edgar","filing":"0001209191-17-026765","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117026765/doc4.xml","form_type":"4"}},{"id":4353642,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-04-12T21:33:22.000Z","date":"2017-04-11","kind":"exercise","acquired":true,"shares":6848,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":268714,"source":{"system":"sec-edgar","filing":"0001209191-17-026765","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117026765/doc4.xml","form_type":"4"}},{"id":4353641,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-04-12T21:33:22.000Z","date":"2017-04-10","kind":"sale","acquired":false,"shares":1580,"price":47.7,"value":75366.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"These shares were sold in multiple transactions at prices ranging from $47.65 to $47.80. The price reported in Column 4 reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range at which the transaction was effected."}],"balance_after":261866,"source":{"system":"sec-edgar","filing":"0001209191-17-026765","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117026765/doc4.xml","form_type":"4"}},{"id":4353640,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-04-12T21:33:22.000Z","date":"2017-04-10","kind":"sale","acquired":false,"shares":9420,"price":47.44,"value":446884.8,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"These shares were sold in multiple transactions at prices ranging from $46.65 to $47.60. The price reported in Column 4 reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range at which the transaction was effected."}],"balance_after":263446,"source":{"system":"sec-edgar","filing":"0001209191-17-026765","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117026765/doc4.xml","form_type":"4"}},{"id":4353639,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-04-12T21:33:22.000Z","date":"2017-04-10","kind":"exercise","acquired":true,"shares":11000,"price":16.58,"value":182380.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."}],"balance_after":272866,"source":{"system":"sec-edgar","filing":"0001209191-17-026765","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117026765/doc4.xml","form_type":"4"}},{"id":4353638,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-04-12T21:33:22.000Z","date":"2017-04-10","kind":"tax_withholding","acquired":false,"shares":35853,"price":47.5,"value":1703017.5,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"Represents a \"net exercise\" of outstanding stock options. These shares were withheld by the Company for payment of the exercise price and applicable taxes, based on the market price of the Company's common stock at the time of the option exercise on April 10, 2017 of $47.50"}],"balance_after":261866,"source":{"system":"sec-edgar","filing":"0001209191-17-026765","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117026765/doc4.xml","form_type":"4"}},{"id":4353637,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-04-12T21:33:22.000Z","date":"2017-04-10","kind":"exercise","acquired":true,"shares":37708,"price":43.83,"value":1652741.64,"ownership":{"direct":true},"balance_after":297719,"source":{"system":"sec-edgar","filing":"0001209191-17-026765","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117026765/doc4.xml","form_type":"4"}},{"id":4353636,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-04-12T21:33:22.000Z","date":"2017-04-10","kind":"tax_withholding","acquired":false,"shares":2576,"price":47.5,"value":122360.0,"ownership":{"direct":true},"balance_after":260011,"source":{"system":"sec-edgar","filing":"0001209191-17-026765","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117026765/doc4.xml","form_type":"4"}},{"id":4353635,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-04-12T21:33:22.000Z","date":"2017-04-10","kind":"exercise","acquired":true,"shares":7276,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":262587,"source":{"system":"sec-edgar","filing":"0001209191-17-026765","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117026765/doc4.xml","form_type":"4"}},{"id":4368469,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock Options","published_at":"2017-03-30T21:52:49.000Z","date":"2017-03-28","kind":"grant","acquired":true,"shares":57750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The options to purchase the Company's common stock become exercisable in four equal annual installments beginning on April 1, 2018."}],"balance_after":57750,"derivative":{"exercise_price":46.95,"expiration_date":"2024-03-28","underlying":"Common Stock","underlying_shares":57750},"source":{"system":"sec-edgar","filing":"0001209191-17-023769","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117023769/doc4.xml","form_type":"4"}},{"id":4446052,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock Options","published_at":"2017-02-15T17:06:40.000Z","date":"2017-02-13","kind":"exercise","acquired":false,"shares":5500,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The options to purchase the Company's common stock became exercisable in in two equal annual installments beginning April 27, 2013."}],"balance_after":11000,"derivative":{"exercise_price":16.58,"expiration_date":"2017-04-27","underlying":"Common Stock","underlying_shares":5500},"source":{"system":"sec-edgar","filing":"0001209191-17-011144","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117011144/doc4.xml","form_type":"4"}},{"id":4446051,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-02-15T17:06:40.000Z","date":"2017-02-13","kind":"sale","acquired":false,"shares":5500,"price":47.24,"value":259820.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These shares were sold in multiple transactions at prices ranging from $47.00 to $47.50. The price reported in Column 4 reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range at which the transaction was effected."}],"balance_after":255311,"source":{"system":"sec-edgar","filing":"0001209191-17-011144","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117011144/doc4.xml","form_type":"4"}},{"id":4446050,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-02-15T17:06:40.000Z","date":"2017-02-13","kind":"exercise","acquired":true,"shares":5500,"price":16.58,"value":91190.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."}],"balance_after":260811,"source":{"system":"sec-edgar","filing":"0001209191-17-011144","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117011144/doc4.xml","form_type":"4"}},{"id":4493177,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock Options","published_at":"2017-01-11T17:02:55.000Z","date":"2017-01-09","kind":"exercise","acquired":false,"shares":5500,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The options to purchase the Company's common stock became exercisable in in two equal annual installments beginning April 27, 2013."}],"balance_after":16500,"derivative":{"exercise_price":16.58,"expiration_date":"2017-04-27","underlying":"Common Stock","underlying_shares":5500},"source":{"system":"sec-edgar","filing":"0001209191-17-003412","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117003412/doc4.xml","form_type":"4"}},{"id":4493176,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-01-11T17:02:55.000Z","date":"2017-01-09","kind":"sale","acquired":false,"shares":5500,"price":35.76,"value":196680.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These shares were sold in multiple transactions at prices ranging from $35.45 to $36.35. The price reported in Column 4 reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range at which the transaction was effected."}],"balance_after":255311,"source":{"system":"sec-edgar","filing":"0001209191-17-003412","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117003412/doc4.xml","form_type":"4"}},{"id":4493175,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2017-01-11T17:02:55.000Z","date":"2017-01-09","kind":"exercise","acquired":true,"shares":5500,"price":16.58,"value":91190.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."}],"balance_after":260811,"source":{"system":"sec-edgar","filing":"0001209191-17-003412","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919117003412/doc4.xml","form_type":"4"}},{"id":4522298,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock Options","published_at":"2016-12-14T19:24:21.000Z","date":"2016-12-12","kind":"exercise","acquired":false,"shares":1727,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The options to purchase the Company's common stock became exercisable in in two equal annual installments beginning April 27, 2013."}],"balance_after":22000,"derivative":{"exercise_price":16.58,"expiration_date":"2017-04-27","underlying":"Common Stock","underlying_shares":1727},"source":{"system":"sec-edgar","filing":"0001209191-16-155261","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116155261/doc4.xml","form_type":"4"}},{"id":4522297,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock Options","published_at":"2016-12-14T19:24:21.000Z","date":"2016-12-12","kind":"exercise","acquired":false,"shares":3773,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The options to purchase the Company's common stock became exercisable in in two equal annual installments beginning April 27, 2013."}],"balance_after":23727,"derivative":{"exercise_price":16.58,"expiration_date":"2017-04-27","underlying":"Common Stock","underlying_shares":3773},"source":{"system":"sec-edgar","filing":"0001209191-16-155261","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116155261/doc4.xml","form_type":"4"}},{"id":4522296,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2016-12-14T19:24:21.000Z","date":"2016-12-12","kind":"sale","acquired":false,"shares":1727,"price":33.79,"value":58355.33,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"These shares were sold in multiple transactions at prices ranging from $33.45 to $34.05.  The price reported in Column 4 reflects the weighted average sale price.  The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range at which the transaction was effected."}],"balance_after":255311,"source":{"system":"sec-edgar","filing":"0001209191-16-155261","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116155261/doc4.xml","form_type":"4"}},{"id":4522295,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2016-12-14T19:24:21.000Z","date":"2016-12-12","kind":"exercise","acquired":true,"shares":1727,"price":16.58,"value":28633.66,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."}],"balance_after":257038,"source":{"system":"sec-edgar","filing":"0001209191-16-155261","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116155261/doc4.xml","form_type":"4"}},{"id":4522294,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2016-12-14T19:24:21.000Z","date":"2016-12-12","kind":"sale","acquired":false,"shares":3773,"price":33.91,"value":127942.43,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These shares were sold in multiple transactions at prices ranging from $33.40 to $34.15. The price reported in Column 4 reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range at which the transaction was effected."}],"balance_after":255311,"source":{"system":"sec-edgar","filing":"0001209191-16-155261","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116155261/doc4.xml","form_type":"4"}},{"id":4522293,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2016-12-14T19:24:21.000Z","date":"2016-12-12","kind":"exercise","acquired":true,"shares":3773,"price":16.58,"value":62556.34,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."}],"balance_after":259084,"source":{"system":"sec-edgar","filing":"0001209191-16-155261","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116155261/doc4.xml","form_type":"4"}},{"id":4553184,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock Options","published_at":"2016-11-16T12:57:43.000Z","date":"2016-11-14","kind":"exercise","acquired":false,"shares":5500,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The options to purchase the Company's common stock became exercisable in two equal annual installments beginning on April 27, 2013."}],"balance_after":27500,"derivative":{"exercise_price":16.58,"expiration_date":"2017-04-27","underlying":"Common Stock","underlying_shares":5500},"source":{"system":"sec-edgar","filing":"0001209191-16-150421","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116150421/doc4.xml","form_type":"4"}},{"id":4553183,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2016-11-16T12:57:43.000Z","date":"2016-11-14","kind":"sale","acquired":false,"shares":5500,"price":32.88,"value":180840.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These shares were sold in multiple transactions at prices ranging from $32.65 to $33.50. The price reported in Column 4 reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range at which the transaction was effected."}],"balance_after":255311,"source":{"system":"sec-edgar","filing":"0001209191-16-150421","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116150421/doc4.xml","form_type":"4"}},{"id":4553182,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2016-11-16T12:57:43.000Z","date":"2016-11-14","kind":"exercise","acquired":true,"shares":5500,"price":16.58,"value":91190.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."}],"balance_after":260811,"source":{"system":"sec-edgar","filing":"0001209191-16-150421","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116150421/doc4.xml","form_type":"4"}},{"id":4580797,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock Options","published_at":"2016-10-12T17:04:30.000Z","date":"2016-10-10","kind":"exercise","acquired":false,"shares":5500,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The options to purchase the Company's common stock become exercisable in two equal annual installments on April 27, 2013."}],"balance_after":33000,"derivative":{"exercise_price":16.58,"expiration_date":"2017-04-27","underlying":"Common Stock","underlying_shares":5500},"source":{"system":"sec-edgar","filing":"0001209191-16-145711","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116145711/doc4.xml","form_type":"4"}},{"id":4580796,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2016-10-12T17:04:30.000Z","date":"2016-10-10","kind":"sale","acquired":false,"shares":5500,"price":43.89,"value":241395.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These shares were sold in multiple transactions at prices ranging from $43.74 to $44.04. The price reported in Column 4 reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range at which the transaction was effected."}],"balance_after":255311,"source":{"system":"sec-edgar","filing":"0001209191-16-145711","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116145711/doc4.xml","form_type":"4"}},{"id":4580795,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2016-10-12T17:04:30.000Z","date":"2016-10-10","kind":"exercise","acquired":true,"shares":5500,"price":16.58,"value":91190.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."}],"balance_after":260811,"source":{"system":"sec-edgar","filing":"0001209191-16-145711","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116145711/doc4.xml","form_type":"4"}},{"id":4603394,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock Options","published_at":"2016-09-14T16:41:10.000Z","date":"2016-09-12","kind":"exercise","acquired":false,"shares":5500,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The options to purchase the Company's common stock became exercisable in two equal annual installments beginning on April 27, 2013."}],"balance_after":38500,"derivative":{"exercise_price":16.58,"expiration_date":"2017-04-27","underlying":"Common Stock","underlying_shares":5500},"source":{"system":"sec-edgar","filing":"0001209191-16-141422","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116141422/doc4.xml","form_type":"4"}},{"id":4603393,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2016-09-14T16:41:10.000Z","date":"2016-09-12","kind":"sale","acquired":false,"shares":5500,"price":43.09,"value":236995.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These shares were sold in multiple transactions at prices ranging from $42.72 to $43.45. The price reported in Column 4 reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range at which the transaction was effected."}],"balance_after":255311,"source":{"system":"sec-edgar","filing":"0001209191-16-141422","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116141422/doc4.xml","form_type":"4"}},{"id":4603392,"issuer":{"id":171687,"kind":"organization","name":"ADVISORY BOARD CO","symbol":"ABCO"},"owners":[{"id":35790,"kind":"person","name":"Musslewhite Robert W","position":1,"cik":"0001390194","reported_name":"Musslewhite Robert W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2016-09-14T16:41:10.000Z","date":"2016-09-12","kind":"exercise","acquired":true,"shares":5500,"price":16.58,"value":91190.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."}],"balance_after":260811,"source":{"system":"sec-edgar","filing":"0001209191-16-141422","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1157377/000120919116141422/doc4.xml","form_type":"4"}}]}