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Filing Details

Accession Number:: 0001209191-20-024225
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2020-04-13 17:12:09
Reporting Period:: 2020-04-13

Accepted Time:: 2020-04-13 17:12:09
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1664710	Keros Therapeutics Inc.	KROS	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1282930	L Carl Gordon	C/O Keros Therapeutics, Inc. 99 Hayden Avenue, Suite 120, Building E Lexington MA 02421		Yes	No	No	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2020-04-13	744,612	$0.00	744,612	No	4	C	Indirect	See footnote
Common Stock	Acquisiton	2020-04-13	148,922	$0.00	148,922	No	4	C	Indirect	See footnote
Common Stock	Acquisiton	2020-04-13	375,200	$16.00	1,119,812	No	4	P	Indirect	See footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	C	Indirect	See footnote
No	4	C	Indirect	See footnote
No	4	P	Indirect	See footnote

Reported Derivative Transactions

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Series C Preferred Stock	Disposition	2020-04-13	744,612	$0.00	744,612	$0.00
Common Stock	Series C Preferred Stock	Disposition	2020-04-13	148,922	$0.00	148,922	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0			No	4	C	Indirect
0			No	4	C	Indirect

Footnotes

Each share of Series C Preferred Stock converted into shares of Common Stock upon the closing of the Issuer's initial public offering, on a one-for-one basis, and had no expiration date.
These securities are held of record by OrbiMed Private Investments VII, LP ("OPI VII"). OrbiMed Capital GP VII LLC ("OrbiMed GP VII") is the general partner of OPI VII and OrbiMed Advisors LLC ("OrbiMed Advisors") is the managing member of OrbiMed GP VII. By virtue of such relationships, OrbiMed GP VII and OrbiMed Advisors may be deemed to have voting power and investment power over the securities held by OPI VII and as a result, may be deemed to have beneficial ownership over such securities. OrbiMed Capital LLC ("OrbiMed Capital") is a relying adviser of OrbiMed Advisors. OrbiMed Advisors and OrbiMed Capital exercise voting and investment power through a management committee comprised of the Reporting Person, Sven H. Borho, and Jonathan T. Silverstein, each of whom disclaims beneficial ownership of the shares held by OPI VII.
These securities are held of record by OrbiMed Genesis Master Fund, LP ("Genesis"). OrbiMed Genesis GP LLC ("Genesis GP") is the general partner of Genesis. OrbiMed Advisors is the managing member of Genesis GP. By virtue of such relationships, Genesis GP and OrbiMed Advisors may be deemed to have voting power and investment power over the securities held by Genesis and as a result, may be deemed to have beneficial ownership over such securities. OrbiMed Capital is a relying adviser of OrbiMed Advisors. OrbiMed Advisors and OrbiMed Capital exercise voting and investment power through a management committee comprised of the Reporting Person, Sven H. Borho, and Jonathan T. Silverstein, each of whom disclaims beneficial ownership of the shares held by Genesis.