Jennifer Lachey Form 3 Keros Therapeutics / Jennifer Lachey ownership change

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Lachey Jennifer

(Last) (First) (Middle)

C/O KEROS THERAPEUTICS, INC.

99 HAYDEN AVENUE, SUITE 120, BUILDING E

(Street)

LEXINGTON MA 02421

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
04/07/2020

3. Issuer Name and Ticker or Trading Symbol
Keros Therapeutics, Inc. [ KROS ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
Chief Scientific Officer

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	27,991	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (right to buy)	(1)	02/05/2027	Common Stock	43,196	0.11	D
Employee Stock Option (right to buy)	(2)	04/02/2027	Common Stock	6,220	0.11	D
Employee Stock Option (right to buy)	(2)	03/25/2028	Common Stock	150,905	0.3	D
Employee Stock Option (right to buy)	(3)	03/25/2028	Common Stock	8,293	0.3	D
Employee Stock Option (right to buy)	(4)	06/18/2029	Common Stock	36,861	0.48	D
Employee Stock Option (right to buy)	(5)	06/11/2029	Common Stock	48,380	0.48	D

Explanation of Responses:

1. One-quarter (1/4th) of the shares subject to the option vested on July 1, 2017, and one-twelfth (1/12th) of the remaining shares subject to the option vested or shall vest in equal quarterly installments thereafter, subject to the Reporting Person continuing to provide service through each such date.

2. Immediately exercisable.

3. One-twelfth (1/12th) of the shares subject to the option vested or shall vest in equal quarterly installments commencing on March 18, 2018, subject to the Reporting Person continuing to provide service through each such date.

4. One-quarter (1/4th) of the shares subject to the option vested on December 1, 2019, and one-twelfth (1/12th) of the remaining shares subject to the option vested or shall vest in equal quarterly installments thereafter, subject to the Reporting Person continuing to provide service through each such date.

5. One-quarter (1/4th) of the shares subject to the option shall vest on May 13, 2020, and one-twelfth (1/12th) of the remaining shares subject to the option vested or shall vest in equal quarterly installments thereafter, subject to the Reporting Person continuing to provide service through each such date.

Remarks:

Exhibit List - Exhibit 24 - Power of Attorney

	/s/ Keith Regnante, Attorney-in-Fact	04/07/2020
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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