SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* 5AM Ventures IV, L.P. (Last) (First) (Middle) 501 2ND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Crinetics Pharmaceuticals, Inc. [ CRNX ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 01/22/2019
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/22/2019		S		251,667	D	$21.875	3,107,642	I	See footnotes(1)(3)
Common Stock	01/22/2019		S		10,486	D	$21.875	129,483	I	See footnotes(2)(3)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* 5AM Ventures IV, L.P. (Last) (First) (Middle) 501 2ND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* 5AM Co-Investors IV, L.P. (Last) (First) (Middle) 501 2ND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* 5AM Partners IV, LLC (Last) (First) (Middle) 501 2ND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* ROCKLAGE SCOTT M (Last) (First) (Middle) 501 2ND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* DIEKMAN JOHN D (Last) (First) (Middle) 501 2ND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Schwab Andrew J. (Last) (First) (Middle) 501 2ND STREET, SUITE 350 (Street) SAN FRANCISCO CA 94107 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. These securities are held of record by 5AM Ventures IV, L.P. ("Ventures IV"). Following the transactions reported herein, 3,107,642 shares of Common Stock are held of record by Ventures IV.

2. These securities are held of record by 5AM Co-Investors IV, L.P. ("Co-Investors IV"). Following the transactions reported herein, 129,483 shares of Common Stock are held of record by Co-Investors IV.

3. 5AM Partners IV, LLC ("Partners IV") is the sole general partner of Ventures IV and Co-Investors IV. Dr. John Diekman, Andrew J. Schwab and Dr. Scott M. Rocklage, are the managing members of Partners IV, and have shared voting and investment power over the shares beneficially owned by Ventures IV and Co-Investors IV. Each of Partners IV, Dr. Diekman, Mr. Schwab, and Dr. Rocklage disclaims beneficial ownership of such shares except to the extent of its or their pecuniary interest therein.

	5AM VENTURES IV, L.P. By: 5AM Partners IV, LLC, its General Partner /s/ Scott M. Rocklage Managing Member	01/24/2019
	5AM CO-INVESTORS IV, L.P. By: 5AM Partners IV, LLC, its General Partner /s/ Scott M. Rocklage Managing Member	01/24/2019
	5AM PARTNERS IV, LLC /s/ Scott M. Rocklage Managing Member	01/24/2019
	/s/ Scott M. Rocklage	01/24/2019
	/s/ John D. Diekman	01/24/2019
	/s/ Andrew J. Schwab	01/24/2019
	** Signature of Reporting Person	Date
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* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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