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These shares were sold in multiple transactions at prices ranging from $23.15 to $23.75, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001209191-21-036811","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/56701/000120919121036811/doc4.xml","form_type":"4"}},{"id":2690427,"issuer":{"id":7415,"kind":"organization","name":"KOSS CORP"},"owners":[{"id":138869,"kind":"person","name":"Nixon Theodore","position":1,"cik":"0001378858","reported_name":"Nixon Theodore","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-06-01T20:17:49.000Z","date":"2021-05-28","kind":"exercise","acquired":true,"shares":10000,"price":1.92,"value":19200.0,"ownership":{"direct":true},"balance_after":10000,"source":{"system":"sec-edgar","filing":"0001209191-21-036811","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/56701/000120919121036811/doc4.xml","form_type":"4"}},{"id":2884238,"issuer":{"id":7415,"kind":"organization","name":"KOSS CORP"},"owners":[{"id":138869,"kind":"person","name":"Nixon Theodore","position":1,"cik":"0001378858","reported_name":"Nixon Theodore","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-04T01:12:04.000Z","date":"2021-02-01","kind":"sale","acquired":false,"shares":30000,"price":43.78,"value":1313400.0,"ownership":{"direct":true},"balance_after":0,"source":{"system":"sec-edgar","filing":"0001209191-21-007567","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/56701/000120919121007567/doc4.xml","form_type":"4"}},{"id":3940308,"issuer":{"id":7415,"kind":"organization","name":"KOSS CORP"},"owners":[{"id":138869,"kind":"person","name":"Nixon Theodore","position":1,"cik":"0001378858","reported_name":"Nixon Theodore","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2018-05-10T21:27:11.000Z","date":"2018-05-09","kind":"grant","acquired":true,"shares":10000,"price":1.92,"value":19200.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"This option vests in three annual installments beginning on May 9, 2019, thirty-three percent (33%) on the first and second anniversary dates and thirty-four percent (34%) on the third anniversary date of the grant date."}],"balance_after":10000,"derivative":{"exercise_price":1.92,"expiration_date":"2023-05-09","underlying":"Common Stock","underlying_shares":10000},"source":{"system":"sec-edgar","filing":"0000056701-18-000010","document":"wf-form4_152598757054790.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/56701/000005670118000010/wf-form4_152598757054790.xml","form_type":"4"}}]}