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For this purpose, the \"Volume Hurdle\" will have been achieved if, as of the applicable vesting date, the volume of gasoline gallon equivalents of natural gas delivered by the Issuer in its most recently completed fiscal year has increased by 10% or more relative to the volume of gasoline gallon equivalents of natural gas delivered by the Issuer in the fiscal year immediately preceding the Issuer's most recently completed fiscal year."}],"balance_after":37800,"derivative":{"exercise_price":2.19,"expiration_date":"2029-02-25","underlying":"Common Stock","underlying_shares":37800},"source":{"system":"sec-edgar","filing":"0001179110-19-002577","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1368265/000117911019002577/edgar.xml","form_type":"4"}},{"id":3631362,"issuer":{"id":5760,"kind":"organization","name":"Clean Energy Fuels Corp.","symbol":"CLNE"},"owners":[{"id":116317,"kind":"person","name":"Pratt Mitchell W","position":1,"cik":"0001400258","reported_name":"Pratt Mitchell W","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"COO and Secretary"}}],"security":"Stock Option (Right to Buy)","published_at":"2019-02-26T21:10:21.000Z","date":"2019-02-25","kind":"grant","acquired":true,"shares":88200,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Family Trust"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"34% of the total shares subject to the stock option award vest on the first anniversary of the date of grant, and 33% vest on each anniversary thereafter until the award is fully vested."}],"balance_after":88200,"derivative":{"exercise_price":2.19,"expiration_date":"2029-02-25","underlying":"Common Stock","underlying_shares":88200},"source":{"system":"sec-edgar","filing":"0001179110-19-002577","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1368265/000117911019002577/edgar.xml","form_type":"4"}},{"id":3964529,"issuer":{"id":5760,"kind":"organization","name":"Clean Energy Fuels Corp.","symbol":"CLNE"},"owners":[{"id":116317,"kind":"person","name":"Pratt Mitchell W","position":1,"cik":"0001400258","reported_name":"Pratt Mitchell W","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"COO and Secretary"}}],"security":"Common Stock","published_at":"2018-04-12T20:15:24.000Z","date":"2018-04-10","kind":"tax_withholding","acquired":false,"shares":2035,"price":1.39,"value":2828.65,"ownership":{"direct":false,"nature":"By Family Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Shares were withheld by the Issuer to pay the tax withholding obligations that arose upon the grant of the stock award reported in this statement."}],"balance_after":676249,"source":{"system":"sec-edgar","filing":"0001179110-18-005595","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1368265/000117911018005595/edgar.xml","form_type":"4"}},{"id":3964528,"issuer":{"id":5760,"kind":"organization","name":"Clean Energy Fuels Corp.","symbol":"CLNE"},"owners":[{"id":116317,"kind":"person","name":"Pratt Mitchell W","position":1,"cik":"0001400258","reported_name":"Pratt Mitchell W","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"COO and Secretary"}}],"security":"Common Stock","published_at":"2018-04-12T20:15:24.000Z","date":"2018-04-10","kind":"grant","acquired":true,"shares":5884,"ownership":{"direct":false,"nature":"By Family Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents an award of 5,884 fully vested shares of the Issuer's common stock.  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