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 	  
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X	
	
	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*
Frazier Healthcare VII, L.P.	

(Last)	(First)	(Middle)	
601 UNION STREET, SUITE 3200	

(Street) 
SEATTLE	WA	98101	

(City)	(State)	(Zip)	
	2. Issuer Name and Ticker or Trading Symbol 
ANAPTYSBIO INC [ ANAB ] 	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)
05/11/2018 		
	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	05/11/2018		J(1) 		1,372,000	D	$0 	973,612	I	See Footnote(1) 	
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*
Frazier Healthcare VII, L.P.	

(Last)	(First)	(Middle)	
601 UNION STREET, SUITE 3200	

(Street) 
SEATTLE	WA	98101	

(City)	(State)	(Zip)	
	
1. Name and Address of Reporting Person*
Frazier Healthcare VII-A, L.P.	

(Last)	(First)	(Middle)	
601 UNION STREET, SUITE 3200	

(Street) 
SEATTLE	WA	98101	

(City)	(State)	(Zip)	
	
1. Name and Address of Reporting Person*
FHM VII, L.P.	

(Last)	(First)	(Middle)	
601 UNION STREET, SUITE 3200	

(Street) 
SEATTLE	WA	98101	

(City)	(State)	(Zip)	
	
1. Name and Address of Reporting Person*
FHM VII, L.L.C.	

(Last)	(First)	(Middle)	
601 UNION STREET, SUITE 3200	

(Street) 
SEATTLE	WA	98101	

(City)	(State)	(Zip)	
	
1. Name and Address of Reporting Person*
FRAZIER ALAN D	

(Last)	(First)	(Middle)	
601 UNION STREET, SUITE 3200	

(Street) 
SEATTLE	WA	98101	

(City)	(State)	(Zip)	
	
1. Name and Address of Reporting Person*
Naini Nader J	

(Last)	(First)	(Middle)	
601 UNION STREET, SUITE 3200	

(Street) 
SEATTLE	WA	98101	

(City)	(State)	(Zip)	
	
1. Name and Address of Reporting Person*
Every Nathan R	

(Last)	(First)	(Middle)	
601 UNION STREET, SUITE 3200	

(Street) 
SEATTLE	WA	98101	

(City)	(State)	(Zip)	
	
1. Name and Address of Reporting Person*
Heron Patrick J	

(Last)	(First)	(Middle)	
601 UNION STREET, SUITE 3200	

(Street) 
SEATTLE	WA	98101	

(City)	(State)	(Zip)	
	
Explanation of Responses:	
1. Effective May 11, 2018, Frazier Healthcare V, L.P., distributed in-kind, without consideration, a total of 1,372,000 shares of Common Stock of the Issuer to its general and limited partners. The remaining securities are held by Frazier Healthcare V, L.P. Each of the Reporting Persons disclaims beneficial ownership of the shares except to the extent of their pecuniary interest therein, if any.	
Remarks:	
This statement is filed by: (i) Frazier Healthcare V, L.P. ("Frazier Healthcare V"), Frazier Healthcare VII, L.P. ("Frazier Healthcare VII"), and Frazier Healthcare VII-A, L.P. ("Frazier Healthcare VII-A"), each a Delaware limited partnership and direct owners of the shares of Common Stock following the in-kind distribution of shares of the Issuer (together, the "Shares"); (ii) FHM V, L.P., a Delaware limited partnership and general partner to Frazier Healthcare V; FHM V, L.L.C. a Delaware limited liability company and general partner of FHM V, L.P.; FHM VII, L.P., a Delaware limited partnership and general partner to Frazier Healthcare VII and Frazier Healthcare VII-A; and FHM VII, L.L.C., a Delaware limited liability company and general partner of FHM VII, L.P.; and (iii) Alan Frazier, Nader Naini, Nathan Every and Patrick Heron, each of who are members of FHM V, L.L.C. and FHM VII, L.L.C. and may be deemed to share voting and investment power with respect to shares held by Frazier Healthcare V, Frazier Healthcare VII, and Frazier Healthcare VII-A. The Reporting Persons are jointly filing this Form 4 pursuant to Rule 16a-3(j) under the Exchange Act. Because no more than 10 reporting persons can file any one Form 4 through the Securities and Exchange Commission's EDGAR system, Frazier Healthcare V, FHM V, L.P., FHM V, L.L.C. and certain other affiliates of the Reporting Persons have filed a separate Form 4, in which the direct and indirect transactions of Frazier Healthcare V, FHM V, L.P., FHM V, L.L.C. are also reported, in addition to being reported on this Form 4.	
	/s/ Steve R. Bailey, Attorney-In-Fact for Frazier Healthcare VII, L.P.	05/15/2018	
	/s/ Steve R. Bailey, Attorney-In-Fact for Frazier Healthcare VII-A, L.P.	05/15/2018	
	/s/ Steve R. Bailey, Attorney-In-Fact for FHM VII, L.P.	05/15/2018	
	/s/ Steve R. Bailey, Attorney-In-Fact for FHM VII, L.L.C.	05/15/2018	
	/s/ Steve R. Bailey, Attorney-In-Fact for Alan Frazier	05/15/2018	
	/s/ Steve R. Bailey, Attorney-In-Fact for Nader Naini	05/15/2018	
	/s/ Steve R. Bailey, Attorney-In-Fact for Nathan Every	05/15/2018	
	/s/ Steve R. Bailey, Attorney-In-Fact for Patrick Heron	05/15/2018	
	** 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 4 (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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