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Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Held directly by Truffle Fortune 4 FCPI, a FCPI."}],"balance_after":113.8297,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":8527},"source":{"system":"sec-edgar","filing":"0001012975-18-000203","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":18,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000203/edgar.xml","form_type":"4"}},{"id":4054552,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2018-02-15T21:49:37.000Z","date":"2018-02-13","kind":"other","acquired":false,"shares":30.3547,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F16","text":"The Issuer's Preferred Stock is convertible at any time at the option of the holder into shares of the Issuer's Common Stock, subject to certain restrictions, at an initial conversion price of $2.67 per share and a stated amount of $1,000 per share."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2798 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2798 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Held directly by UFF Innovation 15 FCPI, a FCPI."}],"balance_after":151.7724,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":11369},"source":{"system":"sec-edgar","filing":"0001012975-18-000203","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":17,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000203/edgar.xml","form_type":"4"}},{"id":4054551,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2018-02-15T21:49:37.000Z","date":"2018-02-13","kind":"other","acquired":false,"shares":22.7661,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F16","text":"The Issuer's Preferred Stock is convertible at any time at the option of the holder into shares of the Issuer's Common Stock, subject to certain restrictions, at an initial conversion price of $2.67 per share and a stated amount of $1,000 per share."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2798 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2798 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by UFF Innovation 14 FCPI, a FCPI (Fonds Commun de Placement dans l'Innovation), which is a tax efficient French collective investment fund."}],"balance_after":113.8297,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":8527},"source":{"system":"sec-edgar","filing":"0001012975-18-000203","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000203/edgar.xml","form_type":"4"}},{"id":4054550,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2018-02-15T21:49:37.000Z","date":"2018-02-15","kind":"other","acquired":true,"shares":4483,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F6","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2408 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2408 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Held directly by Truffle Fortune 4 FCPI, a FCPI."}],"balance_after":76700,"source":{"system":"sec-edgar","filing":"0001012975-18-000203","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000203/edgar.xml","form_type":"4"}},{"id":4054549,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2018-02-15T21:49:37.000Z","date":"2018-02-15","kind":"other","acquired":true,"shares":5977,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F6","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2408 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2408 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Held directly by UFF Innovation 15 FCPI, a FCPI."}],"balance_after":139184,"source":{"system":"sec-edgar","filing":"0001012975-18-000203","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000203/edgar.xml","form_type":"4"}},{"id":4054548,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2018-02-15T21:49:37.000Z","date":"2018-02-15","kind":"other","acquired":true,"shares":4483,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F6","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2408 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2408 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by UFF Innovation 14 FCPI, a FCPI (Fonds Commun de Placement dans l'Innovation), which is a tax efficient French collective investment fund."}],"balance_after":179427,"source":{"system":"sec-edgar","filing":"0001012975-18-000203","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000203/edgar.xml","form_type":"4"}},{"id":4054547,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2018-02-15T21:49:37.000Z","date":"2018-02-13","kind":"other","acquired":true,"shares":17789,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2798 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2798 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Held directly by Truffle Fortune 4 FCPI, a FCPI."}],"balance_after":72217,"source":{"system":"sec-edgar","filing":"0001012975-18-000203","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000203/edgar.xml","form_type":"4"}},{"id":4054546,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2018-02-15T21:49:37.000Z","date":"2018-02-13","kind":"other","acquired":true,"shares":23719,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2798 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2798 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Held directly by UFF Innovation 15 FCPI, a FCPI."}],"balance_after":133207,"source":{"system":"sec-edgar","filing":"0001012975-18-000203","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000203/edgar.xml","form_type":"4"}},{"id":4054545,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2018-02-15T21:49:37.000Z","date":"2018-02-13","kind":"other","acquired":true,"shares":17789,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2798 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.2798 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by UFF Innovation 14 FCPI, a FCPI (Fonds Commun de Placement dans l'Innovation), which is a tax efficient French collective investment fund."}],"balance_after":174944,"source":{"system":"sec-edgar","filing":"0001012975-18-000203","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000203/edgar.xml","form_type":"4"}},{"id":4094478,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2018-01-19T21:56:04.000Z","date":"2018-01-17","kind":"other","acquired":false,"shares":22.7661,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F15","text":"The Issuer's Preferred Stock is convertible at any time at the option of the holder into shares of the Issuer's Common Stock, subject to certain restrictions, at an initial conversion price of $2.67 per share and a stated amount of $1,000 per share."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.6420 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.6420 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Held directly by Truffle Fortune 4 FCPI, a FCPI."}],"balance_after":136.5958,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":8527},"source":{"system":"sec-edgar","filing":"0001012975-18-000083","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000083/edgar.xml","form_type":"4"}},{"id":4094477,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2018-01-19T21:56:04.000Z","date":"2018-01-17","kind":"other","acquired":false,"shares":30.3547,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F15","text":"The Issuer's Preferred Stock is convertible at any time at the option of the holder into shares of the Issuer's Common Stock, subject to certain restrictions, at an initial conversion price of $2.67 per share and a stated amount of $1,000 per share."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.6420 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.6420 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Held directly by UFF Innovation 15 FCPI, a FCPI."}],"balance_after":182.127,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":11369},"source":{"system":"sec-edgar","filing":"0001012975-18-000083","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000083/edgar.xml","form_type":"4"}},{"id":4094476,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2018-01-19T21:56:04.000Z","date":"2018-01-17","kind":"other","acquired":false,"shares":22.7661,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F15","text":"The Issuer's Preferred Stock is convertible at any time at the option of the holder into shares of the Issuer's Common Stock, subject to certain restrictions, at an initial conversion price of $2.67 per share and a stated amount of $1,000 per share."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.6420 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.6420 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by UFF Innovation 14 FCPI, a FCPI (Fonds Commun de Placement dans l'Innovation), which is a tax efficient French collective investment fund."}],"balance_after":136.5958,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":8527},"source":{"system":"sec-edgar","filing":"0001012975-18-000083","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000083/edgar.xml","form_type":"4"}},{"id":4094475,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2018-01-19T21:56:04.000Z","date":"2018-01-17","kind":"other","acquired":true,"shares":11655,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.6420 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.6420 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Held directly by Truffle Fortune 4 FCPI, a FCPI."}],"balance_after":54428,"source":{"system":"sec-edgar","filing":"0001012975-18-000083","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000083/edgar.xml","form_type":"4"}},{"id":4094474,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2018-01-19T21:56:04.000Z","date":"2018-01-17","kind":"other","acquired":true,"shares":15541,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.6420 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.6420 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Held directly by UFF Innovation 15 FCPI, a FCPI."}],"balance_after":109488,"source":{"system":"sec-edgar","filing":"0001012975-18-000083","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000083/edgar.xml","form_type":"4"}},{"id":4094473,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2018-01-19T21:56:04.000Z","date":"2018-01-17","kind":"other","acquired":true,"shares":11655,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.6420 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.6420 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by UFF Innovation 14 FCPI, a FCPI (Fonds Commun de Placement dans l'Innovation), which is a tax efficient French collective investment fund."}],"balance_after":157155,"source":{"system":"sec-edgar","filing":"0001012975-18-000083","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297518000083/edgar.xml","form_type":"4"}},{"id":4130191,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2017-12-15T22:47:49.000Z","date":"2017-12-13","kind":"other","acquired":false,"shares":22.7661,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F16","text":"The Issuer's Preferred Stock is convertible at any time at the option of the holder into shares of the Issuer's Common Stock, subject to certain restrictions, at an initial conversion price of $2.67 per share and a stated amount of $1,000 per share."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.4213 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.4213 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Held directly by Truffle Fortune 4 FCPI, a FCPI."}],"balance_after":159.3618,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":8527},"source":{"system":"sec-edgar","filing":"0001012975-17-000934","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":18,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000934/edgar.xml","form_type":"4"}},{"id":4130190,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2017-12-15T22:47:49.000Z","date":"2017-12-13","kind":"other","acquired":false,"shares":30.3547,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F16","text":"The Issuer's Preferred Stock is convertible at any time at the option of the holder into shares of the Issuer's Common Stock, subject to certain restrictions, at an initial conversion price of $2.67 per share and a stated amount of $1,000 per share."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.4213 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.4213 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Held directly by UFF Innovation 15 FCPI, a FCPI."}],"balance_after":212.4817,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":11369},"source":{"system":"sec-edgar","filing":"0001012975-17-000934","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":17,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000934/edgar.xml","form_type":"4"}},{"id":4130189,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2017-12-15T22:47:49.000Z","date":"2017-12-13","kind":"other","acquired":false,"shares":22.7661,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F16","text":"The Issuer's Preferred Stock is convertible at any time at the option of the holder into shares of the Issuer's Common Stock, subject to certain restrictions, at an initial conversion price of $2.67 per share and a stated amount of $1,000 per share."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.4213 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.4213 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by UFF Innovation 14 FCPI, a FCPI (Fonds Commun de Placement dans l'Innovation), which is a tax efficient French collective investment fund."}],"balance_after":159.3618,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":8527},"source":{"system":"sec-edgar","filing":"0001012975-17-000934","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000934/edgar.xml","form_type":"4"}},{"id":4130188,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2017-12-15T22:47:49.000Z","date":"2017-12-15","kind":"other","acquired":true,"shares":4337,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F6","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.3910 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.3910 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Held directly by Truffle Fortune 4 FCPI, a FCPI."}],"balance_after":42773,"source":{"system":"sec-edgar","filing":"0001012975-17-000934","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000934/edgar.xml","form_type":"4"}},{"id":4130187,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2017-12-15T22:47:49.000Z","date":"2017-12-15","kind":"other","acquired":true,"shares":5784,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F6","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.3910 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.3910 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Held directly by UFF Innovation 15 FCPI, a FCPI."}],"balance_after":93947,"source":{"system":"sec-edgar","filing":"0001012975-17-000934","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000934/edgar.xml","form_type":"4"}},{"id":4130186,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2017-12-15T22:47:49.000Z","date":"2017-12-15","kind":"other","acquired":true,"shares":4337,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F6","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.3910 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.3910 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by UFF Innovation 14 FCPI, a FCPI (Fonds Commun de Placement dans l'Innovation), which is a tax efficient French collective investment fund."}],"balance_after":145500,"source":{"system":"sec-edgar","filing":"0001012975-17-000934","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000934/edgar.xml","form_type":"4"}},{"id":4130185,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2017-12-15T22:47:49.000Z","date":"2017-12-13","kind":"other","acquired":true,"shares":16018,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.4213 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.4213 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Held directly by Truffle Fortune 4 FCPI, a FCPI."}],"balance_after":38436,"source":{"system":"sec-edgar","filing":"0001012975-17-000934","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000934/edgar.xml","form_type":"4"}},{"id":4130184,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2017-12-15T22:47:49.000Z","date":"2017-12-13","kind":"other","acquired":true,"shares":21357,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.4213 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.4213 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Held directly by UFF Innovation 15 FCPI, a FCPI."}],"balance_after":88163,"source":{"system":"sec-edgar","filing":"0001012975-17-000934","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000934/edgar.xml","form_type":"4"}},{"id":4130183,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2017-12-15T22:47:49.000Z","date":"2017-12-13","kind":"other","acquired":true,"shares":16018,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.4213 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.4213 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by UFF Innovation 14 FCPI, a FCPI (Fonds Commun de Placement dans l'Innovation), which is a tax efficient French collective investment fund."}],"balance_after":141163,"source":{"system":"sec-edgar","filing":"0001012975-17-000934","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000934/edgar.xml","form_type":"4"}},{"id":4160277,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2017-11-16T23:58:06.000Z","date":"2017-11-14","kind":"other","acquired":false,"shares":22.7661,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F15","text":"The Issuer's Preferred Stock is convertible at any time at the option of the holder into shares of the Issuer's Common Stock, subject to certain restrictions, at an initial conversion price of $2.67 per share and a stated amount of $1,000 per share."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.89 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.89 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Held directly by Truffle Fortune 4 FCPI, a FCPI."}],"balance_after":182.1279,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":8527},"source":{"system":"sec-edgar","filing":"0001012975-17-000854","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000854/edgar.xml","form_type":"4"}},{"id":4160276,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2017-11-16T23:58:06.000Z","date":"2017-11-14","kind":"other","acquired":false,"shares":30.3547,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F15","text":"The Issuer's Preferred Stock is convertible at any time at the option of the holder into shares of the Issuer's Common Stock, subject to certain restrictions, at an initial conversion price of $2.67 per share and a stated amount of $1,000 per share."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.89 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.89 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Held directly by UFF Innovation 15 FCPI, a FCPI."}],"balance_after":242.8363,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":11369},"source":{"system":"sec-edgar","filing":"0001012975-17-000854","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000854/edgar.xml","form_type":"4"}},{"id":4160275,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2017-11-16T23:58:06.000Z","date":"2017-11-14","kind":"other","acquired":false,"shares":22.7661,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F15","text":"The Issuer's Preferred Stock is convertible at any time at the option of the holder into shares of the Issuer's Common Stock, subject to certain restrictions, at an initial conversion price of $2.67 per share and a stated amount of $1,000 per share."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.89 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.89 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by UFF Innovation 14 FCPI, a FCPI (Fonds Commun de Placement dans l'Innovation), which is a tax efficient French collective investment fund."}],"balance_after":182.1279,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":8527},"source":{"system":"sec-edgar","filing":"0001012975-17-000854","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000854/edgar.xml","form_type":"4"}},{"id":4160274,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2017-11-16T23:58:06.000Z","date":"2017-11-14","kind":"other","acquired":true,"shares":12030,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.89 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.89 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Held directly by Truffle Fortune 4 FCPI, a FCPI."}],"balance_after":22418,"source":{"system":"sec-edgar","filing":"0001012975-17-000854","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000854/edgar.xml","form_type":"4"}},{"id":4160273,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2017-11-16T23:58:06.000Z","date":"2017-11-14","kind":"other","acquired":true,"shares":16039,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.89 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.89 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Held directly by UFF Innovation 15 FCPI, a FCPI."}],"balance_after":66806,"source":{"system":"sec-edgar","filing":"0001012975-17-000854","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000854/edgar.xml","form_type":"4"}},{"id":4160272,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, par value $0.0001","published_at":"2017-11-16T23:58:06.000Z","date":"2017-11-14","kind":"other","acquired":true,"shares":12030,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.89 per share of Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the terms of the Series B Convertible Preferred Stock (the \"Preferred Stock\"), the Issuer converted the Preferred Stock into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\") at the installment conversion price of $1.89 per share of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by UFF Innovation 14 FCPI, a FCPI (Fonds Commun de Placement dans l'Innovation), which is a tax efficient French collective investment fund."}],"balance_after":125145,"source":{"system":"sec-edgar","filing":"0001012975-17-000854","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000854/edgar.xml","form_type":"4"}},{"id":4226404,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Warrant","published_at":"2017-08-23T20:23:37.000Z","date":"2017-08-21","kind":"purchase","acquired":true,"shares":30696,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Warrants to purchase shares of the Issuer's Common Stock were acquired in connection with the acquisition of the Preferred Stock and reported on this Form 4. The Warrants may not be exercised if such exercise would cause the holder, together with its affiliates, to hold more than 19.99% of the Issuer's Common Stock, prior to the receipt by the Issuer of the Requisite Stockholder Approval."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Held directly by Truffle Fortune 4 FCPI, a FCPI."}],"balance_after":30696,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2022-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":30696},"source":{"system":"sec-edgar","filing":"0001012975-17-000652","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000652/edgar.xml","form_type":"4"}},{"id":4226403,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Warrant","published_at":"2017-08-23T20:23:37.000Z","date":"2017-08-21","kind":"purchase","acquired":true,"shares":40927,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Warrants to purchase shares of the Issuer's Common Stock were acquired in connection with the acquisition of the Preferred Stock and reported on this Form 4. The Warrants may not be exercised if such exercise would cause the holder, together with its affiliates, to hold more than 19.99% of the Issuer's Common Stock, prior to the receipt by the Issuer of the Requisite Stockholder Approval."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Held directly by UFF Innovation 15 FCPI, a FCPI."}],"balance_after":40927,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2022-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":40927},"source":{"system":"sec-edgar","filing":"0001012975-17-000652","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000652/edgar.xml","form_type":"4"}},{"id":4226402,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Warrant","published_at":"2017-08-23T20:23:37.000Z","date":"2017-08-21","kind":"purchase","acquired":true,"shares":30696,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Warrants to purchase shares of the Issuer's Common Stock were acquired in connection with the acquisition of the Preferred Stock and reported on this Form 4. The Warrants may not be exercised if such exercise would cause the holder, together with its affiliates, to hold more than 19.99% of the Issuer's Common Stock, prior to the receipt by the Issuer of the Requisite Stockholder Approval."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by UFF Innovation 14 FCPI, a FCPI (Fonds Commun de Placement dans l'Innovation), which is a tax efficient French collective investment fund."}],"balance_after":30696,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2022-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":30696},"source":{"system":"sec-edgar","filing":"0001012975-17-000652","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000652/edgar.xml","form_type":"4"}},{"id":4226401,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2017-08-23T20:23:37.000Z","date":"2017-08-21","kind":"purchase","acquired":true,"shares":204.894,"price":940,"value":192600.36,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Issuer's Series B Convertible Preferred Stock (the \"Preferred Stock\") is convertible at any time at the option of the holder into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\"), subject to certain restrictions, at an initial conversion price of $2.67 per share and a stated amount of $1,000 per share. Prior to the receipt of approval by the Issuer's stockholders for the issuance of shares pursuant to the conversion of the Preferred Stock (the \"Requisite Stockholder Approval\"), the Preferred Stock may not be converted by the holder if, as a result of such conversion, the holder, together with its affiliates, would hold more than 19.99% of the Issuer's Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Held directly by Truffle Fortune 4 FCPI, a FCPI."}],"balance_after":204.894,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":76740},"source":{"system":"sec-edgar","filing":"0001012975-17-000652","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000652/edgar.xml","form_type":"4"}},{"id":4226400,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2017-08-23T20:23:37.000Z","date":"2017-08-21","kind":"purchase","acquired":true,"shares":273.191,"price":940,"value":256799.54,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Issuer's Series B Convertible Preferred Stock (the \"Preferred Stock\") is convertible at any time at the option of the holder into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\"), subject to certain restrictions, at an initial conversion price of $2.67 per share and a stated amount of $1,000 per share. Prior to the receipt of approval by the Issuer's stockholders for the issuance of shares pursuant to the conversion of the Preferred Stock (the \"Requisite Stockholder Approval\"), the Preferred Stock may not be converted by the holder if, as a result of such conversion, the holder, together with its affiliates, would hold more than 19.99% of the Issuer's Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Held directly by UFF Innovation 15 FCPI, a FCPI."}],"balance_after":273.191,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":102318},"source":{"system":"sec-edgar","filing":"0001012975-17-000652","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000652/edgar.xml","form_type":"4"}},{"id":4226399,"issuer":{"id":5349,"kind":"organization","name":"Altimmune, Inc.","symbol":"ALT"},"owners":[{"id":169319,"kind":"organization","name":"Truffle Capital S.A.S.","position":1,"cik":"0001706034","reported_name":"Truffle Capital S.A.S.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2017-08-23T20:23:37.000Z","date":"2017-08-21","kind":"purchase","acquired":true,"shares":204.894,"price":940,"value":192600.36,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Issuer's Series B Convertible Preferred Stock (the \"Preferred Stock\") is convertible at any time at the option of the holder into shares of the Issuer's common stock, par value $0.0001 per share (the \"Common Stock\"), subject to certain restrictions, at an initial conversion price of $2.67 per share and a stated amount of $1,000 per share. Prior to the receipt of approval by the Issuer's stockholders for the issuance of shares pursuant to the conversion of the Preferred Stock (the \"Requisite Stockholder Approval\"), the Preferred Stock may not be converted by the holder if, as a result of such conversion, the holder, together with its affiliates, would hold more than 19.99% of the Issuer's Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Truffle Capital S.A.S., a French societe par actions simplifiee, is the fund manager for each of the funds listed in the following footnotes and as such manages and controls all voting and dispositive rights to shares held by each such fund. Philippe Pouletty, Bernard-Louis Roques and Henri Moulard may be deemed to possess voting and dispositive control over the shares held by funds managed by Truffle Capital S.A.S. and may be deemed to have indirect beneficial ownership of such shares. Each of these individuals disclaims beneficial ownership of such shares, except with respect to any pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by UFF Innovation 14 FCPI, a FCPI (Fonds Commun de Placement dans l'Innovation), which is a tax efficient French collective investment fund."}],"balance_after":204.894,"derivative":{"exercise_price":2.67,"exercise_date":"2017-08-21","expiration_date":"2018-08-15","underlying":"Common Stock, par value $0.0001","underlying_shares":76740},"source":{"system":"sec-edgar","filing":"0001012975-17-000652","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1326190/000101297517000652/edgar.xml","form_type":"4"}}]}