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As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock."}],"balance_after":3178811,"source":{"system":"sec-edgar","filing":"0001445866-18-000596","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586618000596/form4.xml","form_type":"4"}},{"id":3922011,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-05-22T18:05:15.000Z","date":"2018-05-17","kind":"purchase","acquired":true,"shares":5000,"price":2.9,"value":14500.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by BlueLine Capital Partners II, LP.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"The amount of securities beneficially owned by the Reporting Persons was incorrectly stated on the Form 4 filed on May 24, 2017 and was reflected in all subsequent reports but is being corrected with this Form 4 filing."}],"balance_after":3177867,"source":{"system":"sec-edgar","filing":"0001445866-18-000596","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586618000596/form4.xml","form_type":"4"}},{"id":3934701,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-05-14T16:57:16.000Z","date":"2018-05-14","kind":"purchase","acquired":true,"shares":2055,"price":2.79,"value":5733.45,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"These securities are owned by Meridian TSV II, LP."}],"balance_after":3196200,"source":{"system":"sec-edgar","filing":"0001445866-18-000545","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586618000545/form4.xml","form_type":"4"}},{"id":3934700,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-05-14T16:57:16.000Z","date":"2018-05-14","kind":"purchase","acquired":true,"shares":30000,"price":2.8,"value":84000.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by BlueLine Capital Partners II, LP.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock."}],"balance_after":3194145,"source":{"system":"sec-edgar","filing":"0001445866-18-000545","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586618000545/form4.xml","form_type":"4"}},{"id":3934699,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-05-14T16:57:16.000Z","date":"2018-05-10","kind":"purchase","acquired":true,"shares":8493,"price":2.6,"value":22081.8,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by BlueLine Capital Partners II, LP.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock."}],"balance_after":3164145,"source":{"system":"sec-edgar","filing":"0001445866-18-000545","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586618000545/form4.xml","form_type":"4"}},{"id":3992334,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-03-16T17:29:16.000Z","date":"2018-03-16","kind":"purchase","acquired":true,"shares":20000,"price":2.4,"value":48000.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP. The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price. As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock."}],"balance_after":3155652,"source":{"system":"sec-edgar","filing":"0001445866-18-000266","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586618000266/form4.xml","form_type":"4"}},{"id":4131655,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-12-14T18:35:50.000Z","date":"2017-12-13","kind":"purchase","acquired":true,"shares":20000,"price":2.35,"value":47000.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP. The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock."}],"balance_after":3115652,"source":{"system":"sec-edgar","filing":"0001445866-17-001762","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001762/form4.xml","form_type":"4"}},{"id":4131654,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-12-14T18:35:50.000Z","date":"2017-12-13","kind":"purchase","acquired":true,"shares":24000,"price":2.3,"value":55200.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP. The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock."}],"balance_after":3095652,"source":{"system":"sec-edgar","filing":"0001445866-17-001762","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001762/form4.xml","form_type":"4"}},{"id":4131653,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-12-14T18:35:50.000Z","date":"2017-12-13","kind":"purchase","acquired":true,"shares":4767,"price":2.3,"value":10964.1,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"These securities are owned by BlueLine Capital Partners II, LP. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock."}],"balance_after":3071652,"source":{"system":"sec-edgar","filing":"0001445866-17-001762","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001762/form4.xml","form_type":"4"}},{"id":4131652,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-12-14T18:35:50.000Z","date":"2017-12-12","kind":"purchase","acquired":true,"shares":3233,"price":2.35,"value":7597.55,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"These securities are owned by BlueLine Capital Partners II, LP. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock."}],"balance_after":3066885,"source":{"system":"sec-edgar","filing":"0001445866-17-001762","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001762/form4.xml","form_type":"4"}},{"id":4131651,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-12-14T18:35:50.000Z","date":"2017-12-12","kind":"purchase","acquired":true,"shares":12000,"price":2.32,"value":27840.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP. The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F3","text":"As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock."}],"balance_after":3063652,"source":{"system":"sec-edgar","filing":"0001445866-17-001762","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001762/form4.xml","form_type":"4"}},{"id":4137897,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-12-08T17:20:45.000Z","date":"2017-12-08","kind":"purchase","acquired":true,"shares":1800,"price":2.3,"value":4140.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP. As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock. The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":3051652,"source":{"system":"sec-edgar","filing":"0001445866-17-001749","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001749/form4.xml","form_type":"4"}},{"id":4137896,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-12-08T17:20:45.000Z","date":"2017-12-07","kind":"purchase","acquired":true,"shares":15000,"price":2.35,"value":35250.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP. As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock. The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":3049852,"source":{"system":"sec-edgar","filing":"0001445866-17-001749","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001749/form4.xml","form_type":"4"}},{"id":4137895,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-12-08T17:20:45.000Z","date":"2017-12-06","kind":"purchase","acquired":true,"shares":7300,"price":2.3,"value":16790.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP. As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock. The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":3034852,"source":{"system":"sec-edgar","filing":"0001445866-17-001749","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001749/form4.xml","form_type":"4"}},{"id":4210360,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-09-13T19:06:21.000Z","date":"2017-09-11","kind":"purchase","acquired":true,"shares":4982,"price":2,"value":9964.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"These securities are owned by Meridian OHC Partners, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":3027552,"source":{"system":"sec-edgar","filing":"0001445866-17-001315","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001315/form4.xml","form_type":"4"}},{"id":4210359,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-09-13T19:06:21.000Z","date":"2017-09-11","kind":"purchase","acquired":true,"shares":15000,"price":2,"value":30000.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian TSV II, LP."}],"balance_after":3022570,"source":{"system":"sec-edgar","filing":"0001445866-17-001315","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001315/form4.xml","form_type":"4"}},{"id":4213576,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-09-08T19:53:15.000Z","date":"2017-09-08","kind":"other","acquired":true,"shares":225000,"price":2,"value":450000.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian TSV II, LP., and were acquired coincident to a subscription by a new limited partner to such entity.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock."}],"balance_after":3007570,"source":{"system":"sec-edgar","filing":"0001445866-17-001311","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001311/form4.xml","form_type":"4"}},{"id":4221507,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-08-30T17:36:43.000Z","date":"2017-08-30","kind":"purchase","acquired":true,"shares":600,"price":1.9,"value":1140.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"These securities are owned by BlueLine Capital Partners II, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2782570,"source":{"system":"sec-edgar","filing":"0001445866-17-001281","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001281/form4.xml","form_type":"4"}},{"id":4221506,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-08-30T17:36:43.000Z","date":"2017-08-30","kind":"purchase","acquired":true,"shares":300,"price":1.85,"value":555.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"These securities are owned by BlueLine Capital Partners II, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2781970,"source":{"system":"sec-edgar","filing":"0001445866-17-001281","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001281/form4.xml","form_type":"4"}},{"id":4221505,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-08-30T17:36:43.000Z","date":"2017-08-28","kind":"purchase","acquired":true,"shares":30000,"price":1.9,"value":57000.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP."}],"balance_after":2781670,"source":{"system":"sec-edgar","filing":"0001445866-17-001281","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001281/form4.xml","form_type":"4"}},{"id":4224483,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-08-25T17:54:55.000Z","date":"2017-08-25","kind":"purchase","acquired":true,"shares":11060,"price":1.85,"value":20461.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by BlueLine Capital Partners II, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2751670,"source":{"system":"sec-edgar","filing":"0001445866-17-001277","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001277/form4.xml","form_type":"4"}},{"id":4224482,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-08-25T17:54:55.000Z","date":"2017-08-24","kind":"purchase","acquired":true,"shares":155,"price":1.8,"value":279.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by BlueLine Capital Partners II, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2740610,"source":{"system":"sec-edgar","filing":"0001445866-17-001277","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001277/form4.xml","form_type":"4"}},{"id":4224481,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-08-25T17:54:55.000Z","date":"2017-08-23","kind":"purchase","acquired":true,"shares":2166,"price":1.8,"value":3898.8,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by BlueLine Capital Partners II, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2740455,"source":{"system":"sec-edgar","filing":"0001445866-17-001277","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001277/form4.xml","form_type":"4"}},{"id":4232384,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-08-16T18:44:56.000Z","date":"2017-08-16","kind":"purchase","acquired":true,"shares":26670,"price":1.8,"value":48006.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2738289,"source":{"system":"sec-edgar","filing":"0001445866-17-001234","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001234/form4.xml","form_type":"4"}},{"id":4232383,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-08-16T18:44:56.000Z","date":"2017-08-16","kind":"purchase","acquired":true,"shares":15000,"price":1.85,"value":27750.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2711619,"source":{"system":"sec-edgar","filing":"0001445866-17-001234","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001234/form4.xml","form_type":"4"}},{"id":4232382,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-08-16T18:44:56.000Z","date":"2017-08-14","kind":"purchase","acquired":true,"shares":15000,"price":1.9,"value":28500.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2696619,"source":{"system":"sec-edgar","filing":"0001445866-17-001234","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617001234/form4.xml","form_type":"4"}},{"id":4286952,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-06-09T17:29:22.000Z","date":"2017-06-07","kind":"purchase","acquired":true,"shares":109,"price":1.5,"value":163.5,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2681619,"source":{"system":"sec-edgar","filing":"0001445866-17-000838","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617000838/form4.xml","form_type":"4"}},{"id":4286951,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-06-09T17:29:22.000Z","date":"2017-06-07","kind":"purchase","acquired":true,"shares":10000,"price":1.55,"value":15500.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2681510,"source":{"system":"sec-edgar","filing":"0001445866-17-000838","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617000838/form4.xml","form_type":"4"}},{"id":4295715,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-06-02T17:39:29.000Z","date":"2017-06-02","kind":"purchase","acquired":true,"shares":100,"price":1.5,"value":150.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2671510,"source":{"system":"sec-edgar","filing":"0001445866-17-000809","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617000809/form4.xml","form_type":"4"}},{"id":4295714,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-06-02T17:39:29.000Z","date":"2017-06-02","kind":"purchase","acquired":true,"shares":10000,"price":1.55,"value":15500.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2671410,"source":{"system":"sec-edgar","filing":"0001445866-17-000809","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617000809/form4.xml","form_type":"4"}},{"id":4302922,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-05-26T17:34:14.000Z","date":"2017-05-25","kind":"purchase","acquired":true,"shares":5000,"price":1.55,"value":7750.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP. As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock. The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2666410,"source":{"system":"sec-edgar","filing":"0001445866-17-000793","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617000793/form4.xml","form_type":"4"}},{"id":4302921,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-05-26T17:34:14.000Z","date":"2017-05-24","kind":"purchase","acquired":true,"shares":1105,"price":1.55,"value":1712.75,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP. As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock. The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2661410,"source":{"system":"sec-edgar","filing":"0001445866-17-000793","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586617000793/form4.xml","form_type":"4"}},{"id":4518826,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2016-12-16T17:36:43.000Z","date":"2016-12-16","kind":"purchase","acquired":true,"shares":41717,"price":2.35,"value":98034.95,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2651972,"source":{"system":"sec-edgar","filing":"0001445866-16-003003","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586616003003/form4.xml","form_type":"4"}},{"id":4518825,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2016-12-16T17:36:43.000Z","date":"2016-12-16","kind":"purchase","acquired":true,"shares":35100,"price":2.3,"value":80730.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2610255,"source":{"system":"sec-edgar","filing":"0001445866-16-003003","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586616003003/form4.xml","form_type":"4"}},{"id":4518824,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2016-12-16T17:36:43.000Z","date":"2016-12-15","kind":"purchase","acquired":true,"shares":100000,"price":2.35,"value":235000.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2575155,"source":{"system":"sec-edgar","filing":"0001445866-16-003003","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586616003003/form4.xml","form_type":"4"}},{"id":4518823,"issuer":{"id":6163,"kind":"organization","name":"InfuSystem Holdings, Inc","symbol":"INFU"},"owners":[{"id":146231,"kind":"person","name":"Meridian OHC Partners, LP","position":1,"cik":"0001601397","reported_name":"Meridian OHC Partners, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144784,"kind":"organization","name":"Meridian TSV II, LP","position":2,"cik":"0001601536","reported_name":"Meridian TSV II, LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144785,"kind":"organization","name":"TSV Investment Partners, LLC","position":3,"cik":"0001603326","reported_name":"TSV Investment Partners, LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144782,"kind":"person","name":"BlueLine Capital Partners II, L.P.","position":4,"cik":"0001460781","reported_name":"BlueLine Capital Partners II, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":144786,"kind":"organization","name":"BlueLine Partners, L.L.C.","position":5,"cik":"0001311443","reported_name":"BlueLine Partners, L.L.C.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2016-12-16T17:36:43.000Z","date":"2016-12-15","kind":"purchase","acquired":true,"shares":23183,"price":2.3,"value":53320.9,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"These securities are owned by Meridian OHC Partners, LP.  As described in the Schedule 13D filing made on February 12, 2016 with respect to the Common Stock owned by Meridian OHC Partners, LP, Meridian TSV II, LP, TSV Investment Partners, LLC, BlueLine Capital Partners II, L.P. and BlueLine Partners, L.L.C., the Reporting Entities may have been deemed to be a \"group\" under Section 13(d) of the Securities Exchange Act and accordingly each Reporting Person may have been deemed to have beneficial ownership of 10% or more of the Common Stock.  The price reported in Column 4 is a weighted average price. These shares reported herein were purchased in multiple transactions. The reporting persons undertake to provide to InfuSystem Holdings, Inc., any security holder of InfuSystem Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":2475155,"source":{"system":"sec-edgar","filing":"0001445866-16-003003","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1460781/000144586616003003/form4.xml","form_type":"4"}}]}