13G Filing: Primecap Management Co/Ca/ and NetApp Inc. (NTAP)

Item 1.

(a)

Name of Issuer
NetApp, Inc.

(b)

Address of Issuers Principal Executive Offices
495 East Java Drive, Sunnyvale, CA 94089

Item 2.

(a)

Name of Person Filing
PRIMECAP Management Company

(b)

Address of Principal Business Office or, if none, Residence
177 E. Colorado Blvd., 11th Floor, Pasadena, CA 91105

(c)

Citizenship
U.S.A.

(d)

Title of Class of Securities
Common

(e)

CUSIP Number
64110D104

Item 3.

If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a)

o

Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b)

o

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c)

o

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d)

o

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8).

(e)

x

An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);

(f)

o

An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);

(g)

o

A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h)

o

A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

o

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

o

Group, in accordance with §240.13d-1(b)(1)(ii)(J).