Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
LAMONT ANN H
   2. Issuer Name and Ticker or Trading Symbol
CASTLIGHT HEALTH, INC. [CSLT] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O OAK INVESTMENT PARTNERS, 901 MAIN AVENUE, SUITE 600		 3. Date of Earliest Transaction (Month/Day/Year)
06/17/2015
(Street)

NORWALK, CT 06851		 4. If Amendment, Date 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
(City)
(State)
(Zip)
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
Class B Common Stock 06/17/2015   A   12,500 (1) A $ 0 12,500 I See (2)
Class A Common Stock               11,917,744 I See (3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 Underlying Securities
(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 of Derivative Security: 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

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
LAMONT ANN H
C/O OAK INVESTMENT PARTNERS
901 MAIN AVENUE, SUITE 600
NORWALK, CT 06851		   X   X    
OAK INVESTMENT PARTNERS XII L P
C/O OAK INVESTMENT PARTNERS
901 MAIN AVENUE, SUITE 600
NORWALK, CT 06851		     X    

Signatures

 Ann H. Lamont   06/19/2015
**Signature of Reporting Person Date
 Oak Investment Partners XII, LP   06/19/2015
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Represents an award of restricted stock units ("RSUs"). 25% of the RSUs will vest on August 15, 2015 and an additional 25% will vest on each quarterly anniversary thereafter. Each RSU represents a contingent right to receive one share of the Issuer's Class B Common Stock upon settlement for no consideration.
(2) Includes 12,500 RSUs which are held by Ann H. Lamont on behalf of Oak Investment Partners XII, Limited Partnership ("Oak XII"). Ms. Lamont is a Managing Member of Oak Associates XII, L.L.C., the General Partner of Oak XII.
(3) Includes 11,917,744 shares of Class A Common Stock beneficially owned by Oak XII.
 
Remarks:
Ann H. Lamont is a Director of the Issuer.                                                                                                                                                                                                                                                                                                                                                                          This Form 4 is being filed by Ann H. Lamont and Oak XII, collectively the "Reporting Persons". Each Reporting Person disclaims the existence of a "group" and disclaims beneficial ownership of any securities (except to the extent of such Reporting Person's pecuniary interest in such securities) other than any securities reported herein as being directly owned by such Reporting Person, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of any such securities for purposes of Section 16 or for any other purpose.

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