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These shares were sold in several transactions at prices ranging from $48.67 to $48.695, inclusive.  The reporting person undertakes to provide to Aspen Technology, Inc., any security holder of Aspen Technology, 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 range set forth in this footnote."}],"balance_after":40696,"source":{"system":"sec-edgar","filing":"0001127602-16-066110","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/929940/000112760216066110/form4.xml","form_type":"4"}},{"id":4588134,"issuer":{"id":127212,"kind":"organization","name":"ASPENTECH Corp","symbol":"AZPN"},"owners":[{"id":36480,"kind":"person","name":"Johnsen Karl E","position":1,"cik":"0001560263","reported_name":"Johnsen Karl E","relationship":{"officer":true,"officer_title":"Senior Vice President and CFO"}}],"security":"Common Stock","published_at":"2016-10-04T17:00:58.000Z","date":"2016-09-30","kind":"tax_withholding","acquired":false,"shares":949,"price":47,"value":44603.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy statutory tax withholding requirements on vesting of restricted stock units and distribution of stock."}],"balance_after":42796,"source":{"system":"sec-edgar","filing":"0001127602-16-064100","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/929940/000112760216064100/form4.xml","form_type":"4"}},{"id":4611831,"issuer":{"id":127212,"kind":"organization","name":"ASPENTECH Corp","symbol":"AZPN"},"owners":[{"id":36480,"kind":"person","name":"Johnsen Karl E","position":1,"cik":"0001560263","reported_name":"Johnsen Karl E","relationship":{"officer":true,"officer_title":"Senior Vice President and CFO"}}],"security":"Employee Stock Option (Right to Buy)","published_at":"2016-09-06T16:58:15.000Z","date":"2016-09-01","kind":"grant","acquired":true,"shares":22914,"price":45.46,"value":1041670.44,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The option granted at the exercise price of $45.46 vests in 16 equal consecutive quarterly installments on the last business day of the quarter, beginning on September 30, 2016."}],"balance_after":22914,"derivative":{"exercise_price":45.46,"expiration_date":"2026-08-31","underlying":"Common Stock","underlying_shares":22914},"source":{"system":"sec-edgar","filing":"0001127602-16-061953","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/929940/000112760216061953/form4.xml","form_type":"4"}},{"id":4611830,"issuer":{"id":127212,"kind":"organization","name":"ASPENTECH Corp","symbol":"AZPN"},"owners":[{"id":36480,"kind":"person","name":"Johnsen Karl E","position":1,"cik":"0001560263","reported_name":"Johnsen Karl E","relationship":{"officer":true,"officer_title":"Senior Vice President and CFO"}}],"security":"Common Stock","published_at":"2016-09-06T16:58:15.000Z","date":"2016-09-01","kind":"grant","acquired":true,"shares":20623,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Aspen Technology, Inc. common stock.  The Restricted Stock Units vest in 16 equal consecutive quarterly installments on the last business day of the quarter, beginning on September 30, 2016."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Restricted Stock Units do not have an exercise price."}],"balance_after":43745,"source":{"system":"sec-edgar","filing":"0001127602-16-061953","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/929940/000112760216061953/form4.xml","form_type":"4"}}]}