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The RSUs vest in four equal annual installments of 25% on February 8, 2027 through February 8, 2030."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 3,162 ordinary shares acquired on July 15, 2025, and January 14, 2026, under the issuer's 2019 Employee Share Purchase Plan."}],"balance_after":411474,"source":{"system":"sec-edgar","filing":"0001193125-26-047314","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000119312526047314/ownership.xml","form_type":"4"}},{"id":1222395,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See 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These sales were made pursuant to a provision in the reporting person's RSU agreement that requires automatic sales of shares to cover tax withholding obligations."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions and the range of sale prices for the transactions reported was $4.03 to $4.17 per share. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 1,500 ordinary shares acquired on July 14, 2022, and 4,278 ordinary shares acquired on January 14, 2023, under the issuer's 2019 Employee Share Purchase Plan."}],"balance_after":106624,"source":{"system":"sec-edgar","filing":"0000899243-23-005565","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924323005565/doc4.xml","form_type":"4"}},{"id":2201345,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Share Option (right to buy)","published_at":"2022-07-27T21:00:13.000Z","date":"2022-07-25","kind":"grant","acquired":true,"shares":60000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option vests as to 50% of the shares on July 25, 2023 and 50% on July 25, 2024."}],"balance_after":60000,"derivative":{"exercise_price":2.83,"expiration_date":"2032-07-25","underlying":"Ordinary Shares","underlying_shares":60000},"source":{"system":"sec-edgar","filing":"0000899243-22-026918","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924322026918/doc4.xml","form_type":"4"}},{"id":2279319,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2022-05-06T19:20:17.000Z","date":"2022-05-05","kind":"sale","acquired":false,"shares":16714,"price":1.72,"value":28748.08,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"On May 5, 2022, the reporting person sold 16,714 ordinary shares solely to cover taxes associated with the vesting of the PSUs on May 4, 2022. These sales were made pursuant to a provision in the reporting person's PSU agreement that requires automatic sales of shares to cover tax withholding obligations. The sales are intended to comply with Rule 10b5-1(c)(1)(i)(B) under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions and the range of sale prices for the transactions reported was $1.72 to $1.76 per share. 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On May 4, 2022, 50% of the PSUs vested upon the issuer's achievement of the PN Chemistry Milestone (as defined in the PSU agreement) following the issuer's recent WVE-004 data release, as certified by the issuer's compensation committee."}],"balance_after":127809,"source":{"system":"sec-edgar","filing":"0000899243-22-017136","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924322017136/doc4.xml","form_type":"4"}},{"id":2385364,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Ordinary Shares","published_at":"2022-02-18T18:10:17.000Z","date":"2022-02-16","kind":"sale","acquired":false,"shares":10603,"price":2.32,"value":24598.96,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On February 16, 2022, the reporting person sold 10,603 ordinary shares solely to cover taxes associated with the vesting of restricted share units (\"RSUs\") on February 15, 2022. These sales were made pursuant to a provision in the reporting person's RSU agreement that requires automatic sales of shares to cover tax withholding obligations."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions and the range of sale prices for the transactions reported was $2.31 to $2.38 per share. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 1,500 ordinary shares acquired on July 14, 2021, and 1,500 ordinary shares acquired on January 14, 2022, under the issuer's 2019 Employee Share Purchase Plan (ESPP)."}],"balance_after":77809,"source":{"system":"sec-edgar","filing":"0000899243-22-007064","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924322007064/doc4.xml","form_type":"4"}},{"id":2449255,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Share Option (right to buy)","published_at":"2022-01-04T21:15:30.000Z","date":"2022-01-01","kind":"grant","acquired":true,"shares":200000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option vests as to 25% of the shares on January 1, 2023 and vests as to an additional 6.25% of the shares quarterly thereafter until January 1, 2026."}],"balance_after":200000,"derivative":{"exercise_price":3.14,"expiration_date":"2032-01-01","underlying":"Ordinary Shares","underlying_shares":200000},"source":{"system":"sec-edgar","filing":"0000899243-22-000660","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924322000660/doc4.xml","form_type":"4"}},{"id":2850238,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Share Option (right to buy)","published_at":"2021-02-18T19:14:33.000Z","date":"2021-02-01","kind":"grant","acquired":true,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The option vests as to 50% of the shares on February 15, 2022 and 50% on February 15, 2023."}],"balance_after":50000,"derivative":{"exercise_price":10.48,"expiration_date":"2031-02-01","underlying":"Ordinary Shares","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0000899243-21-007203","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924321007203/doc4.xml","form_type":"4"}},{"id":2850237,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Ordinary Shares","published_at":"2021-02-18T19:14:33.000Z","date":"2021-02-16","kind":"sale","acquired":false,"shares":3145,"price":10.57,"value":33242.65,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"On February 16, 2021, the reporting person sold 3,145 ordinary shares solely to cover taxes associated with the vesting of RSUs on February 15, 2021. These sales were made pursuant to a 10b5-1 Trading Plan."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions and the range of sale prices for the transactions reported was $10.49 to $10.58 per share. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."}],"balance_after":85412,"source":{"system":"sec-edgar","filing":"0000899243-21-007203","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924321007203/doc4.xml","form_type":"4"}},{"id":2850236,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Ordinary Shares","published_at":"2021-02-18T19:14:33.000Z","date":"2021-02-01","kind":"grant","acquired":true,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Consists of restricted share units (RSUs). The RSUs vest in two equal installments on February 15, 2022 and February 15, 2023."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 1,500 ordinary shares acquired under the issuer's 2019 Employee Share Purchase Plan (ESPP) on January 14, 2021."}],"balance_after":88557,"source":{"system":"sec-edgar","filing":"0000899243-21-007203","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924321007203/doc4.xml","form_type":"4"}},{"id":3224573,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP, Drug Discovery"}}],"security":"Share Option (right to buy)","published_at":"2020-03-05T20:49:21.000Z","date":"2020-03-03","kind":"grant","acquired":true,"shares":36000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option vests as to 50% of the shares on February 1, 2021 and 50% on February 1, 2022."}],"balance_after":36000,"derivative":{"exercise_price":8.17,"expiration_date":"2030-03-03","underlying":"Ordinary Shares","underlying_shares":36000},"source":{"system":"sec-edgar","filing":"0000899243-20-007285","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924320007285/doc4.xml","form_type":"4"}},{"id":3259577,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP, Drug Discovery"}}],"security":"Ordinary Shares","published_at":"2020-02-20T18:18:55.000Z","date":"2020-02-18","kind":"sale","acquired":false,"shares":3188,"price":7.85,"value":25025.8,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On February 18, 2020, the reporting person sold 3,188 ordinary shares solely to cover taxes associated with the vesting of restricted share units on February 15, 2020. These sales were made pursuant to a 10b5-1 Trading Plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions and the range of sale prices for the transactions reported was $7.84 to $8.168 per share. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.."}],"balance_after":37057,"source":{"system":"sec-edgar","filing":"0000899243-20-005342","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924320005342/doc4.xml","form_type":"4"}},{"id":3350885,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP, Drug Discovery"}}],"security":"Share Option (right to buy)","published_at":"2019-12-05T18:08:44.000Z","date":"2019-12-03","kind":"exercise","acquired":false,"shares":6000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The option exercise and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2019."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The incentive share option initially represented a right to purchase a total of 158,042 ordinary shares, 25% of which became exercisable on August 1, 2015, and the remaining shares vest in 36 equal monthly installments thereafter."}],"balance_after":143542,"derivative":{"exercise_price":2.48,"expiration_date":"2025-03-10","underlying":"Ordinary Shares","underlying_shares":6000},"source":{"system":"sec-edgar","filing":"0000899243-19-028606","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924319028606/doc4.xml","form_type":"4"}},{"id":3350884,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP, Drug Discovery"}}],"security":"Ordinary Shares","published_at":"2019-12-05T18:08:44.000Z","date":"2019-12-03","kind":"sale","acquired":false,"shares":6000,"price":35,"value":210000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The option exercise and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2019."}],"balance_after":40245,"source":{"system":"sec-edgar","filing":"0000899243-19-028606","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924319028606/doc4.xml","form_type":"4"}},{"id":3350883,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP, Drug Discovery"}}],"security":"Ordinary Shares","published_at":"2019-12-05T18:08:44.000Z","date":"2019-12-03","kind":"exercise","acquired":true,"shares":6000,"price":2.48,"value":14880.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The option exercise and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2019."}],"balance_after":46245,"source":{"system":"sec-edgar","filing":"0000899243-19-028606","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924319028606/doc4.xml","form_type":"4"}},{"id":3601905,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP, Drug Discovery"}}],"security":"Ordinary Shares","published_at":"2019-03-11T19:13:03.000Z","date":"2019-03-07","kind":"grant","acquired":true,"shares":15000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Consists of restricted share units (RSUs).  The RSUs vest in four equal annual installments of 25% on February 15, 2020 through February 15, 2023"}],"balance_after":40245,"source":{"system":"sec-edgar","filing":"0000899243-19-007106","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924319007106/doc4.xml","form_type":"4"}},{"id":3641929,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP, Drug Discovery"}}],"security":"Ordinary Shares","published_at":"2019-02-21T19:49:35.000Z","date":"2019-02-19","kind":"sale","acquired":false,"shares":2055,"price":36.84,"value":75706.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On February 19, 2019, the reporting person sold 2,055 ordinary shares solely to cover taxes associated with the vesting of restricted share units on February 15, 2019. These sales were made pursuant to a 10b5-1 Trading Plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions and the range of sale prices for the transactions reported was $36.83 to $37.4865 per share. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."}],"balance_after":25245,"source":{"system":"sec-edgar","filing":"0000899243-19-004462","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000089924319004462/doc4.xml","form_type":"4"}},{"id":3807357,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66890,"kind":"person","name":"Vargeese Chandra","position":1,"cik":"0001657675","reported_name":"Vargeese Chandra","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP, Drug Discovery"}}],"security":"Share Option (right to 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