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These shares were sold in multiple transactions at prices ranging from $63.775 to\n$64.535 inclusive."}],"balance_after":513,"source":{"system":"sec-edgar","filing":"0001209191-21-010882","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1808290/000120919121010882/doc4.xml","form_type":"4"}},{"id":2860868,"issuer":{"id":6242,"kind":"organization","name":"Keros Therapeutics, Inc."},"owners":[{"id":138267,"kind":"person","name":"Ordonez Claudia","position":1,"cik":"0001808290","reported_name":"Ordonez Claudia","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2021-02-16T17:49:05.000Z","date":"2021-02-11","kind":"sale","acquired":false,"shares":175,"price":63.1,"value":11042.5,"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."},{"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 $62.71 to\n$63.51 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and\nExchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in\nfootnotes (2), (3), (4) and (5)."}],"balance_after":825,"source":{"system":"sec-edgar","filing":"0001209191-21-010882","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1808290/000120919121010882/doc4.xml","form_type":"4"}},{"id":2860867,"issuer":{"id":6242,"kind":"organization","name":"Keros Therapeutics, Inc."},"owners":[{"id":138267,"kind":"person","name":"Ordonez Claudia","position":1,"cik":"0001808290","reported_name":"Ordonez Claudia","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2021-02-16T17:49:05.000Z","date":"2021-02-11","kind":"exercise","acquired":true,"shares":1000,"price":0.48,"value":480.0,"ownership":{"direct":true},"balance_after":1000,"source":{"system":"sec-edgar","filing":"0001209191-21-010882","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1808290/000120919121010882/doc4.xml","form_type":"4"}},{"id":2910064,"issuer":{"id":6242,"kind":"organization","name":"Keros Therapeutics, Inc."},"owners":[{"id":138267,"kind":"person","name":"Ordonez Claudia","position":1,"cik":"0001808290","reported_name":"Ordonez Claudia","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Employee Stock Option (right to buy)","published_at":"2021-01-12T17:23:08.000Z","date":"2021-01-10","kind":"grant","acquired":true,"shares":42250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"One-fourth (1/4th) of the shares subject to the option shall vest on January 7, 2022, and one-twelfth (1/12th) of the remaining shares subject\nto the option shall vest in equal quarterly installments thereafter, subject to the Reporting Person continuing to provide service through each such\ndate."}],"balance_after":42250,"derivative":{"exercise_price":70.93,"expiration_date":"2031-01-09","underlying":"Common Stock","underlying_shares":42250},"source":{"system":"sec-edgar","filing":"0001209191-21-003273","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1808290/000120919121003273/doc4.xml","form_type":"4"}},{"id":3180038,"issuer":{"id":6242,"kind":"organization","name":"Keros Therapeutics, Inc."},"owners":[{"id":138267,"kind":"person","name":"Ordonez Claudia","position":1,"cik":"0001808290","reported_name":"Ordonez Claudia","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Employee Stock Option (right to buy)","published_at":"2020-04-08T21:01:01.000Z","date":"2020-04-07","kind":"grant","acquired":true,"shares":18430,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"One-fourth (1/4th) of the shares subject to the option shall vest on March 1, 2021, and one-twelfth (1/12th) of the remaining shares subject to the option shall vest in equal quarterly installments thereafter, subject to the Reporting Person continuing to provide service through each such date."}],"balance_after":18430,"derivative":{"exercise_price":16,"expiration_date":"2030-04-06","underlying":"Common Stock","underlying_shares":18430},"source":{"system":"sec-edgar","filing":"0001209191-20-023989","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1808290/000120919120023989/doc4.xml","form_type":"4"}}]}