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* BRATTON DOUGLAS K (Last) (First) (Middle) 201 MAIN STREET, SUITE 1900 (Street) FORT WORTH TX 76102 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Juno Therapeutics, Inc. [ JUNO ]	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) 12/23/2014
	4. If Amendment, Date of Original Filed (Month/Day/Year) 12/23/2014	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	12/23/2014(1)		P		625,000(2)	A	$24(3)	988,398(2)	I	By CL Alaska, L.P.
Common Stock	12/23/2014		C		1,250,000(4)	A	(5)	1,250,000(4)	I	By JT Line Partners L.P.
Common Stock	12/23/2014		C		68,395(4)	A	(6)	1,318,395(4)	I	By JT Line Partners L.P.

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
Series A-2 Preferred Stock	(5)	12/23/2014		C			1,250,000(4)	(5)	(5)	Common Stock	1,250,000	(5)	0	I	By JT Line Partners L.P.
Series B Preferred Stock	(6)	12/23/2014		C			68,395(4)	(6)	(6)	Common Stock	68,395	(6)	0	I	By JT Line Partners L.P.

1. Name and Address of Reporting Person* BRATTON DOUGLAS K (Last) (First) (Middle) 201 MAIN STREET, SUITE 1900 (Street) FORT WORTH TX 76102 (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* Crestline Investors, Inc. (Last) (First) (Middle) 201 MAIN STREET, SUITE 1900 (Street) FORT WORTH TX 76102 (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* Crestline SI (GP), L.P. (Last) (First) (Middle) 201 MAIN STREET, SUITE 1900 (Street) FORT WORTH TX 76102 (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* Crestline Management, LP (Last) (First) (Middle) 201 MAIN STREET, SUITE 1900 (Street) FORT WORTH TX 76102 (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* CL Alaska, L.P. (Last) (First) (Middle) 201 MAIN STREET, SUITE 1900 (Street) FORT WORTH TX 76102 (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. This amendment has been filed to reflect a correction to the Date of Earliest Transaction and Transaction Date for the purchase of shares on the Form 4 originally filed on December 23, 2014 (the "Original Form 4").

2. These shares are held directly by CL Alaska, L.P. ("CLA"). The general partner of CLA is Crestline SI (GP), L.P. ("Crestline SI") and the investment manager of CLA is Crestline Management, L.P. ("Crestline Management"). Crestline Investors, Inc. ("Crestline") is the general partner of both Crestline SI and Crestline Management. Douglas K. Bratton is the sole director of Crestline. CLA is ultimately controlled by Mr. Bratton and Mr. Bratton has voting and investment power over all of these shares. CLA, Crestline SI, Crestline Management, Crestline and Mr. Bratton may each be deemed to beneficially own all of these shares. Each such entity and Mr. Bratton disclaim beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. The Original Form 4 correctly reported that following this transaction and all conversion transactions on December 23, 2014, CLA directly holds an aggregate of 25,766,130 shares of Common Stock.

3. The Original Form 4 incorrectly reported the purchase price for this transaction as $25.00 per share. This amendment has been filed to reflect the correct purchase price of $24.00 per share.

4. Footnote 5 to the Original Form 4 incorrectly reported that these shares are held directly by CLA. This amendment has been filed to reflect that these shares are held directly by JT Line Partners L.P. ("JT"). The general partner of JT is Bratton Capital Management L.P. ("Bratton Capital Management"). The general partner of Bratton Capital Management is Bratton Capital Inc. ("Bratton Capital"). Douglas K. Bratton is the sole director of Bratton Capital. JT is ultimately controlled by Mr. Bratton and Mr. Bratton has voting and investment power over all of these shares. JT, Bratton Capital Management, Bratton Capital and Mr. Bratton may each be deemed to beneficially own all of these shares. Each such entity and Mr. Bratton disclaim beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein.

5. The Series A-2 Preferred Stock converted into Common Stock on a 1-for-1 basis immediately prior to the completion of the Issuer's initial public offering of common stock and had no expiration date.

6. The Series B Preferred Stock converted into Common Stock on a 1-for-1 basis immediately prior to the completion of the Issuer's initial public offering of common stock and had no expiration date.

Remarks:

	/s/ Douglas K. Bratton	12/24/2014
	/s/ John S. Cochran, Vice President of Crestline Investors, Inc.	12/24/2014
	/s/ John S. Cochran, Vice President of Crestline Investors, Inc., general partner of Crestline SI (GP), L.P.	12/24/2014
	/s/ John S. Cochran, Vice President of Crestline Investors, Inc., general partner of Crestline Management, L.P.	12/24/2014
	/s/ John S. Cochran, Vice President of Crestline Investors, Inc., general partner of Crestline SI (GP), L.P., general partner of CL Alaska, L.P.	12/24/2014
	** Signature of Reporting Person	Date
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