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 * KPCB X ASSOCIATES LLC   2. Issuer Name and Ticker or Trading Symbol ArcSight Inc [ARST] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O KLEINER PERKINS CAUFIELD & BYERS, 2750 SAND HILL ROAD 3. Date of Earliest Transaction (Month/Day/Year) 02/20/2008 (Street) MENLO PARK, CA 94205 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 02/20/2008   C   221,906 A $ 0 679,246 I By: Kleiner Perkins Caufield & Byers X-A (2) Common Stock 02/20/2008   C   1,345,237 A $ 0 2,024,483 I By: Kleiner Perkins Caufield & Byers X-A (2) Common Stock 02/20/2008   C   6,259 A $ 0 2,030,742 (1) I By: Kleiner Perkins Caufield & Byers X-B (2) Common Stock 02/20/2008   C   37,941 A $ 0 2,068,683 (1) I By: Kleiner Perkins Caufield & Byers X-B (2)

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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

Series A Preferred Stock

(3)

02/20/2008

C

176,362

(3)

(3)

Common Stock

221,906

$ 0

4,974

I

By Kleiner Perkins Caufield & Byers X-A, L.P. (2)

Series B Preferred Stock

(4)

02/20/2008

C

1,345,237

(4)

(4)

Common Stock

1,345,237

$ 0

37,941

I

By Kleiner Perkins Caufield & Byers X-A, L.P. (2)

Series A Preferred Stock

(3)

02/20/2008

C

4,974

(3)

(3)

Common Stock

6,259

$ 0

0

I

By Kleiner Perkins Caufield & Byers X-B, L.P. (2)

Series B Preferred Stock

(4)

02/20/2008

C

37,941

(4)

(4)

Common Stock

37,941

$ 0

0

I

By Kleiner Perkins Caufield & Byers X-B, L.P. (2)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
KPCB X ASSOCIATES LLC C/O KLEINER PERKINS CAUFIELD & BYERS 2750 SAND HILL ROAD MENLO PARK, CA 94205		X

Signatures

/s/ Susan Biglieri, Attorney-in-fact for Theodore E. Schlein, a Managing Director of the Reporting Person.		02/22/2008
**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)	This amount includes shares held indirectly by Kleiner Perkins Caufield & Byers X-A, L.P., a California limited partnership.
(2)	The Reporting Person is the general partner of Kleiner Perkins Caufield & Byers X-A, L.P., a California limited partnership and Kleiner Perkins Caufield & Byers X-B, L.P., a California limited partnership. Shares are held for convenience in the name of "KPCB Holdings, Inc. as nominee". KPCB Holdings, Inc. has no voting, dispositive or pecuniary interest in any such shares. The Reporting Person disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein.
(3)	Each share of Series A Preferred Stock automatically converted to Common Stock on a 1-for-1.25824093282596 basis upon the closing of the Issuer's initial public offering. There was no expiration date.
(4)	Each share of Series B Preferred Stock automatically converted to Common Stock on a 1-for-1 basis upon the closing of the Issuer's initial public offering. There was no expiration date.

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