{"transactions":[{"id":2130563,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-10-28T17:29:12.000Z","date":"2022-10-26","kind":"grant","acquired":true,"shares":3976,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares of restricted stock vest at 100% on the first anniversary of the grant date."}],"balance_after":13100,"source":{"system":"sec-edgar","filing":"0001562180-22-007359","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000156218022007359/primarydocument.xml","form_type":"4"}},{"id":2532116,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-10-29T19:14:10.000Z","date":"2021-10-27","kind":"grant","acquired":true,"shares":3518,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares of restricted stock vest at 100% on the first anniversary of the grant date."}],"balance_after":9124,"source":{"system":"sec-edgar","filing":"0001562180-21-006689","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000156218021006689/primarydocument.xml","form_type":"4"}},{"id":2997578,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-30T14:11:03.000Z","date":"2020-10-28","kind":"grant","acquired":true,"shares":1950,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares of restricted stock vest at 100% on the first anniversary of the grant date."}],"balance_after":5606,"source":{"system":"sec-edgar","filing":"0001562180-20-006460","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000156218020006460/primarydocument.xml","form_type":"4"}},{"id":3056252,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-08-17T13:13:07.000Z","date":"2019-12-12","kind":"gift","acquired":false,"shares":2666,"price":70.72,"value":188539.52,"ownership":{"direct":true},"balance_after":57647,"source":{"system":"sec-edgar","filing":"0001562180-20-005452","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000156218020005452/primarydocument.xml","form_type":"5"}},{"id":3387910,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-10-25T16:52:25.000Z","date":"2019-10-23","kind":"grant","acquired":true,"shares":1961,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares of restricted stock vest at 100% on the first anniversary of the grant date."}],"balance_after":6322,"source":{"system":"sec-edgar","filing":"0001562180-19-005251","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000156218019005251/primarydocument.xml","form_type":"4"}},{"id":3415174,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-09-13T14:59:03.000Z","date":"2019-09-12","kind":"sale","acquired":false,"shares":1563,"price":80.5701,"value":125931.0663,"ownership":{"direct":false,"nature":"Power of Attorney"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"Although Mr. O'Brien is neither a trustee nor a beneficiary of the family trust that held these shares, he holds a power of attorney to dispose of the shares and accordingly these shares are reported as being indirectly beneficially owned by Mr. O'Brien."}],"balance_after":53991,"source":{"system":"sec-edgar","filing":"0001562180-19-004791","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000156218019004791/primarydocument.xml","form_type":"4"}},{"id":3782396,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-10-26T16:54:26.000Z","date":"2018-10-24","kind":"grant","acquired":true,"shares":2892,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares of restricted stock vest in two equal installments on each of October 24, 2018 and 2019."}],"balance_after":4361,"source":{"system":"sec-edgar","filing":"0001562180-18-004294","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000156218018004294/primarydocument.xml","form_type":"4"}},{"id":3845083,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-08-14T18:18:07.000Z","date":"2017-11-28","kind":"gift","acquired":false,"shares":1937,"price":52.61,"value":101905.57,"ownership":{"direct":true},"balance_after":57023,"source":{"system":"sec-edgar","filing":"0001562180-18-003577","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000156218018003577/primarydocument.xml","form_type":"5"}},{"id":3845082,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-08-14T18:18:07.000Z","date":"2016-12-13","kind":"sale","acquired":false,"shares":11700,"price":31.63,"value":370071.0,"ownership":{"direct":false,"nature":"Power of Attorney"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.45 to $31.86, inclusive."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Although Mr. O'Brien is neither a trustee nor a beneficiary of the family trust that held these shares, he holds a power of attorney to dispose of the shares and accordingly these shares are reported as being indirectly beneficially owned by Mr. O'Brien."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Although Mr. O'Brien is neither a trustee nor a beneficiary of the family trust that held these shares, he holds a power of attorney to dispose of the shares and accordingly these shares are reported as being indirectly beneficially owned by Mr. O'Brien."}],"balance_after":58960,"source":{"system":"sec-edgar","filing":"0001562180-18-003577","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000156218018003577/primarydocument.xml","form_type":"5"}},{"id":3845081,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-08-14T18:18:07.000Z","date":"2016-12-12","kind":"sale","acquired":false,"shares":19910,"price":31.63,"value":629753.3,"ownership":{"direct":false,"nature":"Power of Attorney"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.45 to $31.86, inclusive."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Although Mr. O'Brien is neither a trustee nor a beneficiary of the family trust that held these shares, he holds a power of attorney to dispose of the shares and accordingly these shares are reported as being indirectly beneficially owned by Mr. O'Brien."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Although Mr. O'Brien is neither a trustee nor a beneficiary of the family trust that held these shares, he holds a power of attorney to dispose of the shares and accordingly these shares are reported as being indirectly beneficially owned by Mr. O'Brien."}],"balance_after":70660,"source":{"system":"sec-edgar","filing":"0001562180-18-003577","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000156218018003577/primarydocument.xml","form_type":"5"}},{"id":4182562,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-10-20T22:11:30.000Z","date":"2017-10-18","kind":"grant","acquired":true,"shares":2939,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares of restricted stock vest in two equal installments on each of October 18, 2017 and 2018."}],"balance_after":90570,"source":{"system":"sec-edgar","filing":"0001562180-17-003290","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000156218017003290/primarydocument.xml","form_type":"4"}},{"id":4188239,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2017-10-11T21:48:03.000Z","date":"2017-10-09","kind":"exercise","acquired":false,"shares":8000,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":14.12,"exercise_date":"2011-10-21","expiration_date":"2017-10-21","underlying":"Common Stock","underlying_shares":8000},"source":{"system":"sec-edgar","filing":"0001562180-17-003246","document":"primarydocument.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000156218017003246/primarydocument.xml","form_type":"4"}},{"id":4188238,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-10-11T21:48:03.000Z","date":"2017-10-09","kind":"tax_withholding","acquired":false,"shares":2147,"price":52.63,"value":112996.61,"ownership":{"direct":true},"balance_after":87631,"source":{"system":"sec-edgar","filing":"0001562180-17-003246","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000156218017003246/primarydocument.xml","form_type":"4"}},{"id":4188237,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-10-11T21:48:03.000Z","date":"2017-10-09","kind":"exercise","acquired":true,"shares":8000,"price":14.12,"value":112960.0,"ownership":{"direct":true},"balance_after":89778,"source":{"system":"sec-edgar","filing":"0001562180-17-003246","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000156218017003246/primarydocument.xml","form_type":"4"}},{"id":4246076,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-08-02T18:15:18.000Z","date":"2016-12-09","kind":"gift","acquired":false,"shares":2392,"price":31.43,"value":75180.56,"ownership":{"direct":true},"balance_after":81778,"source":{"system":"sec-edgar","filing":"0001209191-17-047067","document":"doc5.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000120919117047067/doc5.xml","form_type":"5"}},{"id":4577004,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2016-10-20T18:05:40.000Z","date":"2016-10-19","kind":"grant","acquired":true,"shares":4186,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares of restricted stock vest in two equal installments on each of October 19, 2016 and 2017."}],"balance_after":84170,"source":{"system":"sec-edgar","filing":"0001209191-16-146455","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000120919116146455/doc4.xml","form_type":"4"}},{"id":4582770,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Non-Qualified Stock Option (Right to buy)","published_at":"2016-10-07T17:52:53.000Z","date":"2016-10-06","kind":"exercise","acquired":false,"shares":8000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Field N/A to this transaction but was completed to allow for electronic filing only."}],"balance_after":0,"derivative":{"exercise_price":10.41,"exercise_date":"2010-10-21","expiration_date":"2016-10-21","underlying":"Common","underlying_shares":8000},"source":{"system":"sec-edgar","filing":"0001209191-16-145361","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000120919116145361/doc4.xml","form_type":"4"}},{"id":4582769,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2016-10-07T17:52:53.000Z","date":"2016-10-06","kind":"tax_withholding","acquired":false,"shares":3391,"price":24.56,"value":83282.96,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Net exercise of stock option to cover the exercise price."}],"balance_after":79984,"source":{"system":"sec-edgar","filing":"0001209191-16-145361","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000120919116145361/doc4.xml","form_type":"4"}},{"id":4582768,"issuer":{"id":3908,"kind":"organization","name":"MERCURY SYSTEMS INC","symbol":"MRCY"},"owners":[{"id":122816,"kind":"person","name":"OBRIEN WILLIAM K","position":1,"cik":"0001187425","reported_name":"OBRIEN WILLIAM K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2016-10-07T17:52:53.000Z","date":"2016-10-06","kind":"exercise","acquired":true,"shares":8000,"price":10.41,"value":83280.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Net exercise of stock option to cover the exercise price."}],"balance_after":83375,"source":{"system":"sec-edgar","filing":"0001209191-16-145361","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1049521/000120919116145361/doc4.xml","form_type":"4"}}]}