rrd99894_112145.html

-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, QXsMUGSZmEUHfQoCLyOoo+mUmacKTfv2bPI/YNeJthaTmj1HsV/moYwDVtroMThP 49ZWDqU3kBUAa3AteQD2Ag== 0001181431-06-023962.txt : 20060417 0001181431-06-023962.hdr.sgml : 20060417 20060417195054 ACCESSION NUMBER: 0001181431-06-023962 CONFORMED SUBMISSION TYPE: 3 PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20060410 FILED AS OF DATE: 20060417 DATE AS OF CHANGE: 20060417 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: PHARSIGHT CORP CENTRAL INDEX KEY: 0001040853 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-PREPACKAGED SOFTWARE [7372] IRS NUMBER: 770401273 STATE OF INCORPORATION: CA FISCAL YEAR END: 0331 BUSINESS ADDRESS: STREET 1: 800 WEST EL CAMINO REAL STREET 2: STE 200 CITY: PALO ALTO STATE: CA ZIP: 94040 BUSINESS PHONE: 6503143800 MAIL ADDRESS: STREET 1: 800 WEST EL CAMINO REAL STREET 2: STE 200 CITY: MOUNTAIN VIEW STATE: CA ZIP: 94040 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: FREDERICK WILLIAM W CENTRAL INDEX KEY: 0001269890 FILING VALUES: FORM TYPE: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 000-31253 FILM NUMBER: 06763503 BUSINESS ADDRESS: STREET 1: C/O VERSALTA INC STREET 2: 300 LAKESIDE DR STE 1500 CITY: OAKLAND STATE: CA ZIP: 94612 BUSINESS PHONE: 6503143800 MAIL ADDRESS: STREET 1: C/O PHARSIGHT CORPORATION STREET 2: 321 E. EVELYN AVENUE, 3RD FLOOR CITY: MOUNTAIN VIEW STATE: CA ZIP: 94041 3 1 rrd114470.xml FORM 3 X0202 3 2006-04-10 1 0001040853 PHARSIGHT CORP PHST 0001269890 FREDERICK WILLIAM W C/O PHARSIGHT CORPORATION 321 E. EVELYN AVENUE, 3RD FLOOR MOUNTAIN VIEW CA 94041 0 1 0 0 SVP, Chief Financial Officer Quynh Trinh, Attorney-in-fact for William W. Frederick 2006-04-17 EX-24. 2 rrd99894_112145.htm POWER OF ATTORNEY rrd99894_112145.html

POWER OF ATTORNEY
The undersigned, as a Section 16 reporting person of Pharsight
Corporation (the "Company"), hereby constitutes and appoints
Quynh Trinh and Wilson Sonsini Goodrich & Rosati, P.C.,
and each of them, the undersigned's true and lawful attorney-in-fact to:
1. complete and execute Forms ID, 3, 4, and 5 and other forms and
all amendments thereto as such attorney-in-fact shall in his or her
discretion determine to be required or advisable pursuant to the Securities
Exchange Act of1934 (as amended) and the rules and regulations
promulgated thereunder, or any successor laws and regulations, as a
consequence of the undersigned's ownership, acquisition or disposition
of securities of the Company; and
2. do all acts necessary in order to file such forms with the Securities
and Exchange Commission, any securities exchange or national association,
the Company and such other person or agency as the attorney-in-fact shall
deem appropriate.
   The undersigned hereby ratifies and confirms all that said
attorneys-in-fact and agents shall do or cause to be done by virtue hereof.
The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, are not
assuming, nor is the Company assuming, any of the undersigned's
responsibilities to comply with the Securities Exchange Act of 1934
(as amended).
   This Power of Attorney shall remain in full force and effect until
the undersigned is no longer required to file Forms ID, 3, 4, and 5
with respect to the undersigned's holdings of and transactions in securities
issued by the Company, unless earlier revoked by the undersigned in a
signed writing delivered to the Company and the foregoing attorneys-in-fact.
   IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney
to be executed as of this 17th day of April, 2006.


Signature:	/s/ William Frederick
	William Frederick

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