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The RSU vests as to 100% of the shares on the earlier of the Company's 2027 annual meeting of stockholders or October 5, 2027."}],"balance_after":23400,"source":{"system":"sec-edgar","filing":"0001193125-26-417232","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1631574/000119312526417232/ownership.xml","form_type":"4"}},{"id":687693,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":23621,"kind":"person","name":"Wagner Heidi L","position":1,"cik":"0001655029","reported_name":"Wagner Heidi L","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-08-14T01:00:10.000Z","date":"2026-08-11","kind":"exercise","planned":true,"acquired":false,"shares":7000,"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 March 6, 2026."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"These stock options are fully vested."}],"balance_after":0,"derivative":{"exercise_price":5.97,"expiration_date":"2026-08-16","underlying":"Ordinary Shares","underlying_shares":7000},"source":{"system":"sec-edgar","filing":"0001193125-26-349963","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1631574/000119312526349963/ownership.xml","form_type":"4"}},{"id":687692,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":23621,"kind":"person","name":"Wagner Heidi L","position":1,"cik":"0001655029","reported_name":"Wagner Heidi L","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-08-14T01:00:10.000Z","date":"2026-08-11","kind":"sale","planned":true,"acquired":false,"shares":7000,"price":6.01,"value":42070.0,"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 March 6, 2026."}],"balance_after":44930,"source":{"system":"sec-edgar","filing":"0001193125-26-349963","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1631574/000119312526349963/ownership.xml","form_type":"4"}},{"id":687691,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":23621,"kind":"person","name":"Wagner Heidi L","position":1,"cik":"0001655029","reported_name":"Wagner Heidi L","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-08-14T01:00:10.000Z","date":"2026-08-11","kind":"exercise","planned":true,"acquired":true,"shares":7000,"price":5.97,"value":41790.0,"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 March 6, 2026."}],"balance_after":51930,"source":{"system":"sec-edgar","filing":"0001193125-26-349963","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1631574/000119312526349963/ownership.xml","form_type":"4"}},{"id":687734,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":23632,"kind":"person","name":"Rawcliffe Adrian","position":1,"cik":"0001555851","reported_name":"Rawcliffe Adrian","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-08-14T01:00:08.000Z","date":"2026-08-12","kind":"sale","planned":true,"acquired":false,"shares":12700,"price":5.29,"value":67183.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reflected is the weighted-average sale price for stock sold. The shares were sold in multiple transactions and the range of sale prices for the transactions reported was $5.16 to $5.42 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":0,"source":{"system":"sec-edgar","filing":"0001193125-26-349962","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1555851/000119312526349962/ownership.xml","form_type":"4"}},{"id":687690,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":23620,"kind":"person","name":"TAKANASHI KEN","position":1,"cik":"0001657768","reported_name":"TAKANASHI KEN","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-08-14T01:00:06.000Z","date":"2026-08-11","kind":"sale","planned":true,"acquired":false,"shares":3864,"price":6.01,"value":23222.64,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On August 11, 2026, the reporting person sold 3,864 shares of common stock solely to cover taxes associated with the vesting of restricted stock units on August 11, 2026. These sales were made pursuant to a previously adopted 10b5-1 Trading Plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reflected is the weighted-average sale price for stock sold. The shares were sold in multiple transactions and the range of sale prices for the transactions reported was $6.01 to $6.03 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":20079,"source":{"system":"sec-edgar","filing":"0001193125-26-349961","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1631574/000119312526349961/ownership.xml","form_type":"4"}},{"id":687689,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":23619,"kind":"person","name":"Tan Aik Na","position":1,"cik":"0001821285","reported_name":"Tan Aik Na","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-08-14T01:00:05.000Z","date":"2026-08-11","kind":"sale","planned":true,"acquired":false,"shares":432,"price":6.01,"value":2596.32,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On August 11, 2026, the reporting person sold 432 shares of common stock solely to cover taxes associated with the vesting of restricted stock units on August 11, 2026. These sales were made pursuant to a previously adopted 10b5-1 Trading Plan."}],"balance_after":24968,"source":{"system":"sec-edgar","filing":"0001193125-26-349960","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1631574/000119312526349960/ownership.xml","form_type":"4"}},{"id":825143,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":19524,"kind":"organization","name":"RA CAPITAL MANAGEMENT, L.P.","position":1,"cik":"0001346824","reported_name":"RA CAPITAL MANAGEMENT, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19525,"kind":"organization","name":"RA Capital Healthcare Fund LP","position":2,"cik":"0001315082","reported_name":"RA Capital Healthcare Fund LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19526,"kind":"person","name":"Kolchinsky Peter","position":3,"cik":"0001384859","reported_name":"Kolchinsky Peter","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19527,"kind":"person","name":"Shah Rajeev M.","position":4,"cik":"0001619841","reported_name":"Shah Rajeev M.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Ordinary Shares","published_at":"2026-03-31T00:30:55.000Z","date":"2026-03-30","kind":"purchase","planned":false,"acquired":true,"shares":971091,"price":6.5,"value":6312091.5,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $6.305 to $6.665 inclusive. The Reporting Persons undertake 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 purchased at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"RA Capital Management, L.P. (the \"Adviser\") is the investment manager for RA Capital Healthcare Fund, L.P. (the \"Fund\"). The general partner of the Adviser is RA Capital Management GP, LLC (the \"Adviser GP\"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. Each of the Adviser, the Adviser GP, the Fund, Dr. Kolchinsky and Mr. Shah disclaims beneficial ownership of any of the reported securities, except to the extent of its or his respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by the Fund."}],"balance_after":26975505,"source":{"system":"sec-edgar","filing":"0001231919-26-000297","document":"form4-03312026_120347.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1315082/000123191926000297/form4-03312026_120347.xml","form_type":"4"}},{"id":825142,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":19524,"kind":"organization","name":"RA CAPITAL MANAGEMENT, L.P.","position":1,"cik":"0001346824","reported_name":"RA CAPITAL MANAGEMENT, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19525,"kind":"organization","name":"RA Capital Healthcare Fund LP","position":2,"cik":"0001315082","reported_name":"RA Capital Healthcare Fund LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19526,"kind":"person","name":"Kolchinsky Peter","position":3,"cik":"0001384859","reported_name":"Kolchinsky Peter","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19527,"kind":"person","name":"Shah Rajeev M.","position":4,"cik":"0001619841","reported_name":"Shah Rajeev M.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Ordinary Shares","published_at":"2026-03-31T00:30:55.000Z","date":"2026-03-27","kind":"purchase","planned":false,"acquired":true,"shares":2495623,"price":6.43,"value":16046855.89,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $6.09 to $6.74 inclusive. The Reporting Persons undertake 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 purchased at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"RA Capital Management, L.P. (the \"Adviser\") is the investment manager for RA Capital Healthcare Fund, L.P. (the \"Fund\"). The general partner of the Adviser is RA Capital Management GP, LLC (the \"Adviser GP\"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. Each of the Adviser, the Adviser GP, the Fund, Dr. Kolchinsky and Mr. Shah disclaims beneficial ownership of any of the reported securities, except to the extent of its or his respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by the Fund."}],"balance_after":26004414,"source":{"system":"sec-edgar","filing":"0001231919-26-000297","document":"form4-03312026_120347.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1315082/000123191926000297/form4-03312026_120347.xml","form_type":"4"}},{"id":825141,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":19524,"kind":"organization","name":"RA CAPITAL MANAGEMENT, L.P.","position":1,"cik":"0001346824","reported_name":"RA CAPITAL MANAGEMENT, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19525,"kind":"organization","name":"RA Capital Healthcare Fund LP","position":2,"cik":"0001315082","reported_name":"RA Capital Healthcare Fund LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19526,"kind":"person","name":"Kolchinsky Peter","position":3,"cik":"0001384859","reported_name":"Kolchinsky Peter","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19527,"kind":"person","name":"Shah Rajeev M.","position":4,"cik":"0001619841","reported_name":"Shah Rajeev M.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Ordinary Shares","published_at":"2026-03-31T00:30:55.000Z","date":"2026-03-26","kind":"purchase","planned":false,"acquired":true,"shares":351224,"price":6.38,"value":2240809.12,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $6.365 to $6.40 inclusive. The Reporting Persons undertake 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 purchased at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"RA Capital Management, L.P. (the \"Adviser\") is the investment manager for RA Capital Healthcare Fund, L.P. (the \"Fund\"). The general partner of the Adviser is RA Capital Management GP, LLC (the \"Adviser GP\"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. Each of the Adviser, the Adviser GP, the Fund, Dr. Kolchinsky and Mr. Shah disclaims beneficial ownership of any of the reported securities, except to the extent of its or his respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by the Fund."}],"balance_after":23508791,"source":{"system":"sec-edgar","filing":"0001231919-26-000297","document":"form4-03312026_120347.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1315082/000123191926000297/form4-03312026_120347.xml","form_type":"4"}},{"id":825140,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":19524,"kind":"organization","name":"RA CAPITAL MANAGEMENT, L.P.","position":1,"cik":"0001346824","reported_name":"RA CAPITAL MANAGEMENT, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19525,"kind":"organization","name":"RA Capital Healthcare Fund LP","position":2,"cik":"0001315082","reported_name":"RA Capital Healthcare Fund LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19526,"kind":"person","name":"Kolchinsky Peter","position":3,"cik":"0001384859","reported_name":"Kolchinsky Peter","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19527,"kind":"person","name":"Shah Rajeev M.","position":4,"cik":"0001619841","reported_name":"Shah Rajeev M.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Ordinary Shares","published_at":"2026-03-31T00:30:55.000Z","date":"2026-03-26","kind":"purchase","planned":false,"acquired":true,"shares":4954558,"price":6.06,"value":30024621.48,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.365 to $6.36 inclusive. The Reporting Persons undertake 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 purchased at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"RA Capital Management, L.P. (the \"Adviser\") is the investment manager for RA Capital Healthcare Fund, L.P. (the \"Fund\"). The general partner of the Adviser is RA Capital Management GP, LLC (the \"Adviser GP\"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. Each of the Adviser, the Adviser GP, the Fund, Dr. Kolchinsky and Mr. Shah disclaims beneficial ownership of any of the reported securities, except to the extent of its or his respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Held directly by the Fund."}],"balance_after":23157567,"source":{"system":"sec-edgar","filing":"0001231919-26-000297","document":"form4-03312026_120347.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1315082/000123191926000297/form4-03312026_120347.xml","form_type":"4"}},{"id":827144,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":23620,"kind":"person","name":"TAKANASHI KEN","position":1,"cik":"0001657768","reported_name":"TAKANASHI KEN","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Series A Preferred Shares","published_at":"2026-03-26T20:15:13.000Z","date":"2026-03-23","kind":"exercise","planned":false,"acquired":false,"shares":3901348,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The sole holder of Wave's Series A preferred shares, SNBL USA, Ltd. (\"SNBL USA\") and Shin Nippon Biomedical Laboratories, Ltd. (\"SNBL\"), elected to convert its Series A preferred shares into ordinary shares on a one-for-one basis on March 23, 2026. Due to processing issues among the Issuer's vendors, complicated by the time difference with Singapore, the date of the conversion was not confirmed to be effective until well after March 23, 2026."},{"field":"date","element":"transactionDate","label":"F1","text":"The sole holder of Wave's Series A preferred shares, SNBL USA, Ltd. (\"SNBL USA\") and Shin Nippon Biomedical Laboratories, Ltd. (\"SNBL\"), elected to convert its Series A preferred shares into ordinary shares on a one-for-one basis on March 23, 2026. Due to processing issues among the Issuer's vendors, complicated by the time difference with Singapore, the date of the conversion was not confirmed to be effective until well after March 23, 2026."},{"field":"kind","element":"transactionCoding","label":"F1","text":"The sole holder of Wave's Series A preferred shares, SNBL USA, Ltd. (\"SNBL USA\") and Shin Nippon Biomedical Laboratories, Ltd. (\"SNBL\"), elected to convert its Series A preferred shares into ordinary shares on a one-for-one basis on March 23, 2026. Due to processing issues among the Issuer's vendors, complicated by the time difference with Singapore, the date of the conversion was not confirmed to be effective until well after March 23, 2026."},{"field":"shares","element":"transactionShares","label":"F2","text":"Includes (i) 2,100,000 shares held by SNBL USA and (ii) 1,801,348 shares held by SNBL."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The sole holder of Wave's Series A preferred shares, SNBL USA, Ltd. (\"SNBL USA\") and Shin Nippon Biomedical Laboratories, Ltd. (\"SNBL\"), elected to convert its Series A preferred shares into ordinary shares on a one-for-one basis on March 23, 2026. Due to processing issues among the Issuer's vendors, complicated by the time difference with Singapore, the date of the conversion was not confirmed to be effective until well after March 23, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The sole holder of Wave's Series A preferred shares, SNBL USA, Ltd. (\"SNBL USA\") and Shin Nippon Biomedical Laboratories, Ltd. (\"SNBL\"), elected to convert its Series A preferred shares into ordinary shares on a one-for-one basis on March 23, 2026. Due to processing issues among the Issuer's vendors, complicated by the time difference with Singapore, the date of the conversion was not confirmed to be effective until well after March 23, 2026."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Ken Takanashi, a director of the Issuer, is a director of SNBL USA and SNBL and Mr. Takanashi may be deemed to beneficially own the reported securities held by SNBL USA and SNBL. Pursuant to Rule 16a-1 under the Securities Exchange Act of 1934, as amended (the \"Act\"), Mr. Takanashi disclaims beneficial ownership of the reported securities held by SNBL USA and SNBL, except to the extent of his pecuniary interest therein. The filing of this Form 4 shall not be construed as an admission that Mr. Takanashi is or was for the purposes of Section 16(a) of the Act, or otherwise, the beneficial owner of any of the reported securities held by SNBL USA or SNBL."}],"balance_after":0,"derivative":{"underlying":"Ordinary Shares","underlying_shares":3901348},"source":{"system":"sec-edgar","filing":"0001193125-26-126276","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1631574/000119312526126276/ownership.xml","form_type":"4"}},{"id":827143,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":23620,"kind":"person","name":"TAKANASHI KEN","position":1,"cik":"0001657768","reported_name":"TAKANASHI KEN","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-03-26T20:15:13.000Z","date":"2026-03-23","kind":"exercise","planned":false,"acquired":true,"shares":3901348,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"The sole holder of Wave's Series A preferred shares, SNBL USA, Ltd. (\"SNBL USA\") and Shin Nippon Biomedical Laboratories, Ltd. (\"SNBL\"), elected to convert its Series A preferred shares into ordinary shares on a one-for-one basis on March 23, 2026. Due to processing issues among the Issuer's vendors, complicated by the time difference with Singapore, the date of the conversion was not confirmed to be effective until well after March 23, 2026."},{"field":"kind","element":"transactionCoding","label":"F1","text":"The sole holder of Wave's Series A preferred shares, SNBL USA, Ltd. (\"SNBL USA\") and Shin Nippon Biomedical Laboratories, Ltd. (\"SNBL\"), elected to convert its Series A preferred shares into ordinary shares on a one-for-one basis on March 23, 2026. Due to processing issues among the Issuer's vendors, complicated by the time difference with Singapore, the date of the conversion was not confirmed to be effective until well after March 23, 2026."},{"field":"shares","element":"transactionShares","label":"F2","text":"Includes (i) 2,100,000 shares held by SNBL USA and (ii) 1,801,348 shares held by SNBL."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes an aggregate of (i) 6,107,593 shares held by SNBL USA and (ii) 3,498,815 shares held by SNBL."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Ken Takanashi, a director of the Issuer, is a director of SNBL USA and SNBL and Mr. Takanashi may be deemed to beneficially own the reported securities held by SNBL USA and SNBL. Pursuant to Rule 16a-1 under the Securities Exchange Act of 1934, as amended (the \"Act\"), Mr. Takanashi disclaims beneficial ownership of the reported securities held by SNBL USA and SNBL, except to the extent of his pecuniary interest therein. The filing of this Form 4 shall not be construed as an admission that Mr. Takanashi is or was for the purposes of Section 16(a) of the Act, or otherwise, the beneficial owner of any of the reported securities held by SNBL USA or SNBL."}],"balance_after":9606408,"source":{"system":"sec-edgar","filing":"0001193125-26-126276","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1631574/000119312526126276/ownership.xml","form_type":"4"}},{"id":877269,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":64256,"kind":"person","name":"Francis Chris","position":1,"cik":"0001657709","reported_name":"Francis Chris","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Share Option (right to 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Shares","underlying_shares":17900},"source":{"system":"sec-edgar","filing":"0001193125-26-083712","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1657709/000119312526083712/ownership.xml","form_type":"4"}},{"id":877267,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":64256,"kind":"person","name":"Francis Chris","position":1,"cik":"0001657709","reported_name":"Francis Chris","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-02-27T21:00:03.000Z","date":"2026-02-26","kind":"sale","planned":true,"acquired":false,"shares":15294,"price":15,"value":229410.0,"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 August 5, 2025."}],"balance_after":61867,"source":{"system":"sec-edgar","filing":"0001193125-26-083712","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1657709/000119312526083712/ownership.xml","form_type":"4"}},{"id":877266,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":64256,"kind":"person","name":"Francis Chris","position":1,"cik":"0001657709","reported_name":"Francis Chris","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary 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The shares were sold in multiple transactions and the range of sale prices for the transactions reported was $15.00 to $15.10 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":61867,"source":{"system":"sec-edgar","filing":"0001193125-26-083712","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1657709/000119312526083712/ownership.xml","form_type":"4"}},{"id":877264,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":64256,"kind":"person","name":"Francis Chris","position":1,"cik":"0001657709","reported_name":"Francis Chris","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-02-27T21:00:03.000Z","date":"2026-02-26","kind":"exercise","planned":true,"acquired":true,"shares":17900,"price":3.87,"value":69273.0,"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 August 5, 2025."}],"balance_after":79767,"source":{"system":"sec-edgar","filing":"0001193125-26-083712","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657709/000119312526083712/ownership.xml","form_type":"4"}},{"id":909484,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66858,"kind":"person","name":"Moran Kyle","position":1,"cik":"0001657765","reported_name":"Moran Kyle","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Share Option (right to buy)","published_at":"2026-02-12T02:03:07.000Z","date":"2026-02-05","kind":"grant","planned":false,"acquired":true,"shares":273750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The option vests as to 25% of the shares on February 8, 2027, and vests as to an additional 6.25% of the shares quarterly thereafter until February 8, 2030."}],"balance_after":273750,"derivative":{"exercise_price":12.75,"expiration_date":"2036-02-05","underlying":"Ordinary Shares","underlying_shares":273750},"source":{"system":"sec-edgar","filing":"0001193125-26-047323","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1631574/000119312526047323/ownership.xml","form_type":"4"}},{"id":909483,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66858,"kind":"person","name":"Moran Kyle","position":1,"cik":"0001657765","reported_name":"Moran Kyle","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Ordinary Shares","published_at":"2026-02-12T02:03:07.000Z","date":"2026-02-09","kind":"sale","planned":false,"acquired":false,"shares":3588,"price":13.45,"value":48258.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"On February 9, 2026, the reporting person sold 3,588 ordinary shares solely to cover taxes associated with the vesting of restricted share units (\"RSUs\") on February 8, 2026. 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."}],"balance_after":134385,"source":{"system":"sec-edgar","filing":"0001193125-26-047323","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1631574/000119312526047323/ownership.xml","form_type":"4"}},{"id":909482,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":66858,"kind":"person","name":"Moran Kyle","position":1,"cik":"0001657765","reported_name":"Moran Kyle","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Ordinary Shares","published_at":"2026-02-12T02:03:07.000Z","date":"2026-02-05","kind":"grant","planned":false,"acquired":true,"shares":45625,"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 8, 2027 through February 8, 2030."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 1,983 ordinary shares acquired on January 14, 2026, under the issuer's 2019 Employee Share Purchase Plan."}],"balance_after":137973,"source":{"system":"sec-edgar","filing":"0001193125-26-047323","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1631574/000119312526047323/ownership.xml","form_type":"4"}},{"id":909907,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":45244,"kind":"person","name":"BOLNO PAUL","position":1,"cik":"0001657710","reported_name":"BOLNO PAUL","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Share Option (right to  buy)","published_at":"2026-02-12T02:02:02.000Z","date":"2026-02-05","kind":"grant","planned":false,"acquired":true,"shares":1000000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The option vests as to 25% of the shares on February 8, 2027, and vests as to an additional 6.25% of the shares quarterly thereafter until February 8, 2030."}],"balance_after":1000000,"derivative":{"exercise_price":12.75,"expiration_date":"2036-02-05","underlying":"Ordinary Shares","underlying_shares":1000000},"source":{"system":"sec-edgar","filing":"0001193125-26-047322","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1657710/000119312526047322/ownership.xml","form_type":"4"}},{"id":909906,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":45244,"kind":"person","name":"BOLNO PAUL","position":1,"cik":"0001657710","reported_name":"BOLNO PAUL","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Ordinary Shares","published_at":"2026-02-12T02:02:02.000Z","date":"2026-02-09","kind":"sale","planned":false,"acquired":false,"shares":10480,"price":13.45,"value":140956.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"On February 9, 2026, the reporting person sold 10,480 ordinary shares solely to cover taxes associated with the vesting of restricted share units (\"RSUs\") on February 8, 2026. 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."}],"balance_after":275520,"source":{"system":"sec-edgar","filing":"0001193125-26-047322","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1657710/000119312526047322/ownership.xml","form_type":"4"}},{"id":909905,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":45244,"kind":"person","name":"BOLNO PAUL","position":1,"cik":"0001657710","reported_name":"BOLNO PAUL","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Ordinary Shares","published_at":"2026-02-12T02:02:02.000Z","date":"2026-02-05","kind":"grant","planned":false,"acquired":true,"shares":165000,"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 8, 2027 through February 8, 2030."}],"balance_after":286000,"source":{"system":"sec-edgar","filing":"0001193125-26-047322","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657710/000119312526047322/ownership.xml","form_type":"4"}},{"id":909914,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":64256,"kind":"person","name":"Francis Chris","position":1,"cik":"0001657709","reported_name":"Francis Chris","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Share Option (right to buy)","published_at":"2026-02-11T21:01:03.000Z","date":"2026-02-05","kind":"grant","planned":false,"acquired":true,"shares":232500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The option vests as to 25% of the shares on February 8, 2027, and vests as to an additional 6.25% of the shares quarterly thereafter until February 8, 2030."}],"balance_after":232500,"derivative":{"exercise_price":12.75,"expiration_date":"2036-02-05","underlying":"Ordinary Shares","underlying_shares":232500},"source":{"system":"sec-edgar","filing":"0001193125-26-047319","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1657709/000119312526047319/ownership.xml","form_type":"4"}},{"id":909913,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":64256,"kind":"person","name":"Francis Chris","position":1,"cik":"0001657709","reported_name":"Francis Chris","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-02-11T21:01:03.000Z","date":"2026-02-09","kind":"sale","planned":false,"acquired":false,"shares":1883,"price":13.45,"value":25326.35,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"On February 9, 2026, the reporting person sold 1,883 ordinary shares solely to cover taxes associated with the vesting of restricted share units (\"RSUs\") on February 8, 2026. 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."}],"balance_after":61867,"source":{"system":"sec-edgar","filing":"0001193125-26-047319","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1657709/000119312526047319/ownership.xml","form_type":"4"}},{"id":909912,"issuer":{"id":4976,"kind":"organization","name":"Wave Life Sciences, Inc.","symbol":"WVE"},"owners":[{"id":64256,"kind":"person","name":"Francis Chris","position":1,"cik":"0001657709","reported_name":"Francis Chris","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Ordinary Shares","published_at":"2026-02-11T21:01:03.000Z","date":"2026-02-05","kind":"grant","planned":false,"acquired":true,"shares":38750,"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 8, 2027 through February 8, 2030."}],"balance_after":63750,"source":{"system":"sec-edgar","filing":"0001193125-26-047319","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1657709/000119312526047319/ownership.xml","form_type":"4"}},{"id":909911,"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":"2026-02-11T21:00:05.000Z","date":"2026-02-05","kind":"grant","planned":false,"acquired":true,"shares":273750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The option vests as to 25% of the shares on February 8, 2027, and vests as to an additional 6.25% of the shares quarterly thereafter until February 8, 2030."}],"balance_after":273750,"derivative":{"exercise_price":12.75,"expiration_date":"2036-02-05","underlying":"Ordinary Shares","underlying_shares":273750},"source":{"system":"sec-edgar","filing":"0001193125-26-047314","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000119312526047314/ownership.xml","form_type":"4"}},{"id":909910,"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":"2026-02-11T21:00:05.000Z","date":"2026-02-09","kind":"sale","planned":false,"acquired":false,"shares":3228,"price":13.45,"value":43416.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"On February 9, 2026, the reporting person sold 3,228 ordinary shares solely to cover taxes associated with the vesting of restricted share units (\"RSUs\") on February 8, 2026. 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."}],"balance_after":408246,"source":{"system":"sec-edgar","filing":"0001193125-26-047314","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1657675/000119312526047314/ownership.xml","form_type":"4"}},{"id":909909,"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":"2026-02-11T21:00:05.000Z","date":"2026-02-05","kind":"grant","planned":false,"acquired":true,"shares":45625,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Consists of restricted share units (RSUs). 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The shares were sold in multiple transactions and the range of sale prices for the transactions reported was $16.61 to $16.79 per share. 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The shares were sold in multiple transactions and the range of sale prices for the transactions reported was $15.56 to $16.54 per share. 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