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*
Arch Venture Fund VII LP

(Last) (First) (Middle)
8725 WEST HIGGINS ROAD, SUITE 290

(Street)
CHICAGO IL 60631

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
12/18/2014
3. Issuer Name and Ticker or Trading Symbol
Juno Therapeutics, Inc. [ JUNO ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
5. 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 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 1,097,015 D(4)(5)
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
Series A Preferred Stock (1) (1) Common Stock 6,250,000 (1) D(4)(5)
Series A-2 Preferred Stock (2) (2) Common Stock 3,747,500 (2) D(4)(5)
Series B Preferred Stock (3) (3) Common Stock 457,875 (3) D(4)(5)
1. Name and Address of Reporting Person*
Arch Venture Fund VII LP

(Last) (First) (Middle)
8725 WEST HIGGINS ROAD, SUITE 290

(Street)
CHICAGO IL 60631

(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*
ARCH Venture Partners VII, L.P.

(Last) (First) (Middle)
8725 WEST HIGGINS ROAD, SUITE 290

(Street)
CHICAGO IL 60631

(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*
ARCH Venture Partners VII, LLC

(Last) (First) (Middle)
8725 WEST HIGGINS ROAD, SUITE 290

(Street)
CHICAGO IL 60631

(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*
CRANDELL KEITH

(Last) (First) (Middle)
C/O ARCH VENTURE FUND VII
8725 WEST HIGGINS ROAD, SUITE 290

(Street)
CHICAGO IL 60631

(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*
BYBEE CLINTON

(Last) (First) (Middle)
C/O ARCH VENTURE FUND VII
8725 WEST HIGGINS ROAD, SUITE 290

(Street)
CHICAGO IL 60631

(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. The Series A Preferred Stock has no expiration date or conversion price and will automatically convert to shares of the Issuer's Common Stock upon the closing of the Issuer's initial public offering on a 1-for-1 basis.
2. The Series A-2 Preferred Stock has no expiration date or conversion price and will automatically convert to shares of the Issuer's Common Stock upon the closing of the Issuer's initial public offering on a 1-for-1 basis.
3. The Series B Preferred Stock has no expiration date or conversion price and will automatically convert to shares of the Issuer's Common Stock upon the closing of the Issuer's initial public offering on a 1-for-1 basis.
4. ARCH Venture Partners VII, L.P. (the "GPLP"), as the sole general partner of ARCH Venture Fund VII, L.P. ("ARCH"), may be deemed to beneficially own certain of the shares held by ARCH. The GPLP disclaims beneficial ownership of all shares held by ARCH in which the GPLP does not have an actual pecuniary interest. ARCH Venture Partners VII, LLC (the "GPLLC"), as the sole general partner of the GPLP, may be deemed to beneficially own certain of the shares held by ARCH. The GPLLC disclaims beneficial ownership of all shares held by ARCH in which it does not have an actual pecuniary interest.
5. (Continued from footnote 4) The managing directors of the GPLLC, Robert T. Nelsen, Keith Crandell and Clinton Bybee (together, the "Managing Directors"), are deemed to have voting and dispositive power over the shares held by ARCH, and may be deemed to beneficially own certain of the shares held by ARCH. The Managing Directors disclaim beneficial ownership of all shares held by ARCH in which they do not have an actual pecuniary interest.
Remarks:
By: /s/ Mark McDonnell, as Attorney-in-Fact for Keith Crandell, Managing Director of the general partner of the general partner of ARCH 12/18/2014
By: /s/ Mark McDonnell, as Attorney-in-Fact for Keith Crandell, Managing Director of the general partner of GPLP 12/18/2014
By: /s/ Mark McDonnell, as Attorney-in-Fact for Keith Crandell, Managing Director of GPLLC 12/18/2014
By: /s/ Mark McDonnell, as Attorney-in-Fact for Keith Crandell 12/18/2014
By: /s/ Mark McDonnell, as Attorney-in-Fact for Clinton Bybee 12/18/2014
** 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).
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