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These restricted stock units will vest in equal quarterly increments  (Sept. 1, Dec. 1, Mar. 1 and June 1)."}],"balance_after":227410,"source":{"system":"sec-edgar","filing":"0001225208-21-010099","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1339483/000122520821010099/doc4.xml","form_type":"4"}},{"id":3091088,"issuer":{"id":740,"kind":"organization","name":"ICF International, Inc.","symbol":"ICFI"},"owners":[{"id":132148,"kind":"person","name":"SCHULTE PETER M","position":1,"cik":"0001339483","reported_name":"SCHULTE PETER M","relationship":{"director":true}}],"security":"Common","published_at":"2020-07-02T16:13:28.000Z","date":"2020-07-01","kind":"grant","acquired":true,"shares":1847,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This award of restricted stock units was granted pursuant to ICF International, Inc.'s 2018 Omnibus Incentive Plan, as amended, and represents the Reporting Person's annual equity award.  These restricted stock units will vest in equal quarterly increments  (Sept. 1, Dec. 1, Mar. 1 and June 1)."}],"balance_after":225812,"source":{"system":"sec-edgar","filing":"0001225208-20-009485","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1339483/000122520820009485/doc4.xml","form_type":"4"}},{"id":3121768,"issuer":{"id":740,"kind":"organization","name":"ICF International, Inc.","symbol":"ICFI"},"owners":[{"id":132148,"kind":"person","name":"SCHULTE PETER M","position":1,"cik":"0001339483","reported_name":"SCHULTE PETER M","relationship":{"director":true}}],"security":"Common","published_at":"2020-06-04T16:09:34.000Z","date":"2020-06-03","kind":"sale","acquired":false,"shares":5042,"price":69.8,"value":351931.6,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $69.58 to $69.99, inclusive.  The reporting person undertakes to provide to ICF International, Inc., any security holder of ICF International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) and (2) to this Form 4."}],"balance_after":223965,"source":{"system":"sec-edgar","filing":"0001225208-20-008637","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1339483/000122520820008637/doc4.xml","form_type":"4"}},{"id":3121767,"issuer":{"id":740,"kind":"organization","name":"ICF International, Inc.","symbol":"ICFI"},"owners":[{"id":132148,"kind":"person","name":"SCHULTE PETER M","position":1,"cik":"0001339483","reported_name":"SCHULTE PETER M","relationship":{"director":true}}],"security":"Common","published_at":"2020-06-04T16:09:34.000Z","date":"2020-06-03","kind":"sale","acquired":false,"shares":3581,"price":69.27,"value":248055.87,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $68.58 to $69.57, inclusive.  The reporting person undertakes to provide to ICF International, Inc., any security holder of ICF International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) and (2) to this Form 4."}],"balance_after":229007,"source":{"system":"sec-edgar","filing":"0001225208-20-008637","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1339483/000122520820008637/doc4.xml","form_type":"4"}},{"id":3470714,"issuer":{"id":740,"kind":"organization","name":"ICF International, Inc.","symbol":"ICFI"},"owners":[{"id":132148,"kind":"person","name":"SCHULTE PETER M","position":1,"cik":"0001339483","reported_name":"SCHULTE PETER M","relationship":{"director":true}}],"security":"Common","published_at":"2019-07-02T16:07:13.000Z","date":"2019-07-01","kind":"grant","acquired":true,"shares":1622,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This award of restricted stock units was granted pursuant to ICF International, Inc.'s 2018 Omnibus Incentive Plan and represents the Reporting Person's annual equity award.  These restricted stock units will vest in equal quarterly increments  (Sept. 1, Dec. 1, Mar. 1 and June 1)."}],"balance_after":232588,"source":{"system":"sec-edgar","filing":"0001225208-19-009817","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1339483/000122520819009817/doc4.xml","form_type":"4"}},{"id":3506078,"issuer":{"id":740,"kind":"organization","name":"ICF International, Inc.","symbol":"ICFI"},"owners":[{"id":132148,"kind":"person","name":"SCHULTE PETER M","position":1,"cik":"0001339483","reported_name":"SCHULTE PETER M","relationship":{"director":true}}],"security":"Common","published_at":"2019-05-31T16:04:40.000Z","date":"2019-05-29","kind":"sale","acquired":false,"shares":1372,"price":72.512,"value":99486.464,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $72.43 to $72.63, inclusive.  The reporting person undertakes to provide to ICF International, Inc., any security holder of ICF International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) of this Form 4."}],"balance_after":230966,"source":{"system":"sec-edgar","filing":"0001225208-19-008675","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1339483/000122520819008675/doc4.xml","form_type":"4"}},{"id":3509978,"issuer":{"id":740,"kind":"organization","name":"ICF International, Inc.","symbol":"ICFI"},"owners":[{"id":132148,"kind":"person","name":"SCHULTE PETER M","position":1,"cik":"0001339483","reported_name":"SCHULTE PETER M","relationship":{"director":true}}],"security":"Common","published_at":"2019-05-28T16:04:50.000Z","date":"2019-05-24","kind":"sale","acquired":false,"shares":1244,"price":73.6155,"value":91577.682,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $73.50 to $73.66, inclusive.  The reporting person undertakes to provide to ICF International, Inc., any security holder of ICF International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) on this Form 4."}],"balance_after":232338,"source":{"system":"sec-edgar","filing":"0001225208-19-008559","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1339483/000122520819008559/doc4.xml","form_type":"4"}},{"id":3670114,"issuer":{"id":740,"kind":"organization","name":"ICF International, Inc.","symbol":"ICFI"},"owners":[{"id":132148,"kind":"person","name":"SCHULTE PETER M","position":1,"cik":"0001339483","reported_name":"SCHULTE PETER M","relationship":{"director":true}}],"security":"Common","published_at":"2019-02-07T16:05:46.000Z","date":"2018-11-09","kind":"grant","acquired":true,"shares":110,"price":73.5167,"value":8086.837,"ownership":{"direct":false,"nature":"By Daughter"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The transaction reported relates to shares purchased by daughters of the Reporting Person, over which the Reporting Person has power of attorney."}],"balance_after":110,"source":{"system":"sec-edgar","filing":"0001225208-19-001957","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1339483/000122520819001957/doc4.xml","form_type":"4"}},{"id":3874275,"issuer":{"id":740,"kind":"organization","name":"ICF International, Inc.","symbol":"ICFI"},"owners":[{"id":132148,"kind":"person","name":"SCHULTE PETER M","position":1,"cik":"0001339483","reported_name":"SCHULTE PETER M","relationship":{"director":true}}],"security":"Common","published_at":"2018-07-03T16:07:31.000Z","date":"2018-07-02","kind":"grant","acquired":true,"shares":1658,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This award of restricted stock units was granted pursuant to ICF International, Inc.'s 2018 Omnibus Incentive Plan and represents the Reporting Person's annual equity award.  These restricted stock units will vest in equal quarterly increments (Sept. 1, Dec. 1, Mar. 1 and June 1)."}],"balance_after":233582,"source":{"system":"sec-edgar","filing":"0001225208-18-011321","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1339483/000122520818011321/doc4.xml","form_type":"4"}},{"id":3896511,"issuer":{"id":740,"kind":"organization","name":"ICF International, Inc.","symbol":"ICFI"},"owners":[{"id":132148,"kind":"person","name":"SCHULTE PETER M","position":1,"cik":"0001339483","reported_name":"SCHULTE PETER M","relationship":{"director":true}}],"security":"Common","published_at":"2018-06-12T16:05:55.000Z","date":"2018-06-08","kind":"sale","acquired":false,"shares":11300,"price":73.75,"value":833375.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $73.50 to $74.30, inclusive."}],"balance_after":231924,"source":{"system":"sec-edgar","filing":"0001225208-18-010533","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1339483/000122520818010533/doc4.xml","form_type":"4"}},{"id":3896510,"issuer":{"id":740,"kind":"organization","name":"ICF International, Inc.","symbol":"ICFI"},"owners":[{"id":132148,"kind":"person","name":"SCHULTE PETER M","position":1,"cik":"0001339483","reported_name":"SCHULTE PETER M","relationship":{"director":true}}],"security":"Common","published_at":"2018-06-12T16:05:55.000Z","date":"2018-06-08","kind":"sale","acquired":false,"shares":700,"price":74.425,"value":52097.5,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price.  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