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
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
Raciborski Nathan F
  2. Issuer Name and Ticker or Trading Symbol
Limelight Networks, Inc. [LLNW]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Co-Founder and CTO, Director
(Last)
(First)
(Middle)
C/O LIMELIGHT NETWORKS, INC., 222 SOUTH MILL AVENUE, 8TH FLOOR
3. Date of Earliest Transaction (Month/Day/Year)
04/19/2011
(Street)

TEMPE, AZ 85281
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ 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
Common Stock 04/19/2011   S(1)   39,016 D $ 7.1366 (1) 1,200,669 (2) D  
Common Stock               737,197 I See footnote (3)
Common Stock 04/20/2011   S(4)   20,000 D $ 7.1034 (4) 1,494,832 I See footnote (5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 1474 (9-02)

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
Raciborski Nathan F
C/O LIMELIGHT NETWORKS, INC.
222 SOUTH MILL AVENUE, 8TH FLOOR
TEMPE, AZ 85281
  X     Co-Founder and CTO, Director  

Signatures

 Nathan F. Raciborski by: /s/ James R. Todd, Attorney-in-Fact   04/21/2011
**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) Shares sold pursuant to 10b5-1 plan adopted on February 28, 2011. These shares were sold in multiple transactions at prices ranging from $6.98 to $7.27, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
(2) This includes 107,500 unvested restricted stock units.
(3) Shares held by the Raciborski Family Children's Irrevocable Trust dated October 16, 2009 for which the Reporting Person serves as a Trustee.
(4) Shares sold pursuant to 10b5-1 plan adopted on December 6, 2010 for the Nathan Raciborski Grantor Retained Annuity Trust dated December 15, 2009. These shares were sold in multiple transactions at prices ranging from $6.96 to $7.21, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
(5) Shares held directly by Nathan Raciborski Grantor Retained Annuity Trust dated December 15, 2009 for which the Reporting Person serves as a Trustee. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein.
 
Remarks:
Executed pursuant to the Limited Power of Attorney for Section 16 reporting obligations dated June 3, 2009.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.