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The reporting person undertakes to provide to Lantheus Holdings, Inc., (\"LNTH\") any security holder of LNTH or the staff of the Securities and Exchange Commission (\"SEC\"), upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2) to this Form 4."}],"balance_after":160221,"source":{"system":"sec-edgar","filing":"0000899243-19-006913","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924319006913/doc4.xml","form_type":"4"}},{"id":3625936,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2019-02-28T16:17:17.000Z","date":"2019-02-27","kind":"sale","acquired":false,"shares":2360,"price":23.17,"value":54681.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Starting in 2019, the Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions under 10b5-1 plans. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2018, to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4."}],"balance_after":162010,"source":{"system":"sec-edgar","filing":"0000899243-19-005217","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924319005217/doc4.xml","form_type":"4"}},{"id":3625935,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2019-02-28T16:17:17.000Z","date":"2019-02-26","kind":"grant","acquired":true,"shares":20044,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":164370,"source":{"system":"sec-edgar","filing":"0000899243-19-005217","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924319005217/doc4.xml","form_type":"4"}},{"id":3679480,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2019-02-01T16:30:49.000Z","date":"2019-01-31","kind":"sale","acquired":false,"shares":7651,"price":16.48,"value":126088.48,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Starting in 2019, the Company requires certain senior executives to cover tax liabilities resulting from the vesting of their equity awards pursuant to sell-to-cover transactions under 10b5-1 plans. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2018, to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4."}],"balance_after":144326,"source":{"system":"sec-edgar","filing":"0000899243-19-002317","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924319002317/doc4.xml","form_type":"4"}},{"id":3825137,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2018-09-05T16:30:28.000Z","date":"2018-09-04","kind":"tax_withholding","acquired":false,"shares":5501,"price":15.55,"value":85540.55,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported on this Form 4 represents the disposition of shares withheld by the Company to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4."}],"balance_after":151977,"source":{"system":"sec-edgar","filing":"0000899243-18-023848","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924318023848/doc4.xml","form_type":"4"}},{"id":3954838,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2018-04-27T16:10:20.000Z","date":"2018-04-26","kind":"tax_withholding","acquired":false,"shares":6681,"price":17.9,"value":119589.9,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported on this Form 4 represents the disposition of shares withheld by the Company to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4."}],"balance_after":157478,"source":{"system":"sec-edgar","filing":"0000899243-18-010878","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924318010878/doc4.xml","form_type":"4"}},{"id":3968341,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Stock Option (right to buy)","published_at":"2018-04-05T16:23:57.000Z","date":"2018-04-03","kind":"exercise","acquired":false,"shares":27313,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2017."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"These options were originally granted on April 4, 2008, and originally provided for vesting based on the level of LNTH's satisfaction of certain performance criteria for each of fiscal years 2009, 2010, 2011 and 2012.  As previously reported on a Form 4 filed with the SEC on June 25, 2015, these options were amended in connection with LNTH's initial public offering on June 25, 2015 to provide for additional vesting on the third anniversary of the amendment date (or the day before any earlier expiration) of any options that remain unvested at that time.  As a result, these options became exercisable on April 3, 2018, one day prior to their expiration on April 4, 2018."}],"balance_after":0,"derivative":{"exercise_price":5.62,"expiration_date":"2018-04-04","underlying":"Common Stock","underlying_shares":27313},"source":{"system":"sec-edgar","filing":"0000899243-18-009569","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924318009569/doc4.xml","form_type":"4"}},{"id":3968340,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2018-04-05T16:23:57.000Z","date":"2018-04-03","kind":"sale","acquired":false,"shares":27313,"price":15.3003,"value":417897.0939,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2017."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $15.05 to $15.65, inclusive. The reporting person undertakes to provide to Lantheus Holdings, Inc., (\"LNTH\") any security holder of LNTH or the staff of the Securities and Exchange Commission (\"SEC\"), upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2) to this Form 4."}],"balance_after":164159,"source":{"system":"sec-edgar","filing":"0000899243-18-009569","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924318009569/doc4.xml","form_type":"4"}},{"id":3968339,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2018-04-05T16:23:57.000Z","date":"2018-04-03","kind":"exercise","acquired":true,"shares":27313,"price":5.62,"value":153499.06,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2017."}],"balance_after":191472,"source":{"system":"sec-edgar","filing":"0000899243-18-009569","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924318009569/doc4.xml","form_type":"4"}},{"id":3992085,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2018-03-16T16:10:58.000Z","date":"2018-03-14","kind":"sale","acquired":false,"shares":11492,"price":16.6007,"value":190775.2444,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2017."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $16.35 to $16.825, inclusive. The reporting person undertakes to provide to Lantheus Holdings, Inc., (\"LNTH\") any security holder of LNTH or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2) to this Form 4."}],"balance_after":164159,"source":{"system":"sec-edgar","filing":"0000899243-18-007705","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924318007705/doc4.xml","form_type":"4"}},{"id":4007846,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2018-03-07T16:34:52.000Z","date":"2018-03-05","kind":"grant","acquired":true,"shares":24967,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":175651,"source":{"system":"sec-edgar","filing":"0000899243-18-006649","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924318006649/doc4.xml","form_type":"4"}},{"id":4029800,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2018-02-27T17:01:51.000Z","date":"2018-02-23","kind":"tax_withholding","acquired":false,"shares":1617,"price":19.8,"value":32016.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported on this Form 4 represents the disposition of shares withheld by the Company to satisfy withholding tax liabilities of the Reporting Person associated with the vesting of restricted stock previously granted and reported on a previously filed Form 4."}],"balance_after":150684,"source":{"system":"sec-edgar","filing":"0000899243-18-005642","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924318005642/doc4.xml","form_type":"4"}},{"id":4100346,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Stock Option (right to buy)","published_at":"2018-01-12T16:10:38.000Z","date":"2018-01-10","kind":"exercise","acquired":false,"shares":17172,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2017."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"This option, originally representing a right to purchase a total of 44,485 shares of common stock, became exercisable based on LNTH's satisfaction of certain performance criteria for each of the fiscal years ending 2008, 2009, 2010, 2011 and 2012.  Certain of the performance criteria for 2008 and 2009 were met, resulting in the vesting of this option as to an aggregate of 17,172 shares of common stock."}],"balance_after":0,"derivative":{"exercise_price":5.62,"expiration_date":"2018-04-04","underlying":"Common Stock","underlying_shares":17172},"source":{"system":"sec-edgar","filing":"0000899243-18-000986","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924318000986/doc4.xml","form_type":"4"}},{"id":4100345,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Stock Option (right to buy)","published_at":"2018-01-12T16:10:38.000Z","date":"2018-01-10","kind":"exercise","acquired":false,"shares":4483,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2017."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option, originally representing a right to purchase a total of 44,483 shares of common stock, became exercisable in five equal annual installments beginning on April 4, 2009."}],"balance_after":0,"derivative":{"exercise_price":5.62,"expiration_date":"2018-04-04","underlying":"Common Stock","underlying_shares":4483},"source":{"system":"sec-edgar","filing":"0000899243-18-000986","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924318000986/doc4.xml","form_type":"4"}},{"id":4100344,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2018-01-12T16:10:38.000Z","date":"2018-01-10","kind":"sale","acquired":false,"shares":21655,"price":22.4018,"value":485110.979,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2017."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $22.30 to $22.675, inclusive. The reporting person undertakes to provide to Lantheus Holdings, Inc., (\"LNTH\") any security holder of LNTH or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2) to this Form 4."}],"balance_after":152301,"source":{"system":"sec-edgar","filing":"0000899243-18-000986","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924318000986/doc4.xml","form_type":"4"}},{"id":4100343,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2018-01-12T16:10:38.000Z","date":"2018-01-10","kind":"exercise","acquired":true,"shares":17172,"price":5.62,"value":96506.64,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2017."}],"balance_after":173956,"source":{"system":"sec-edgar","filing":"0000899243-18-000986","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924318000986/doc4.xml","form_type":"4"}},{"id":4100342,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2018-01-12T16:10:38.000Z","date":"2018-01-10","kind":"exercise","acquired":true,"shares":4483,"price":5.62,"value":25194.46,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2017."}],"balance_after":156784,"source":{"system":"sec-edgar","filing":"0000899243-18-000986","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924318000986/doc4.xml","form_type":"4"}},{"id":4160129,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2017-11-16T16:05:26.000Z","date":"2017-11-14","kind":"sale","acquired":false,"shares":11917,"price":21.6319,"value":257787.3523,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2017."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.60 to $21.80, inclusive. The reporting person undertakes to provide to Lantheus Holdings, Inc., any security holder of Lantheus Holdings, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2) to this Form 4."}],"balance_after":152301,"source":{"system":"sec-edgar","filing":"0000899243-17-026586","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924317026586/doc4.xml","form_type":"4"}},{"id":4210249,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Stock Option (right to buy)","published_at":"2017-09-13T16:10:22.000Z","date":"2017-09-11","kind":"exercise","acquired":false,"shares":20000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2017."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option, originally representing a right to purchase a total of 44,484 shares of common stock, became exercisable in five equal annual installments beginning on January 16, 2009."}],"balance_after":4484,"derivative":{"exercise_price":5.62,"expiration_date":"2018-01-18","underlying":"Common Stock","underlying_shares":20000},"source":{"system":"sec-edgar","filing":"0000899243-17-022000","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1237200/000089924317022000/doc4.xml","form_type":"4"}},{"id":4210248,"issuer":{"id":690,"kind":"organization","name":"Lantheus Holdings, Inc.","symbol":"LNTH"},"owners":[{"id":140149,"kind":"person","name":"DUFFY MICHAEL P","position":1,"cik":"0001237200","reported_name":"DUFFY MICHAEL P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2017-09-13T16:10:22.000Z","date":"2017-09-11","kind":"sale","acquired":false,"shares":20000,"price":16.4489,"value":328978.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2017."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. 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