1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 Amendment No. 1 INFORMATICA CORPORATION ----------------------- (Name of Issuer) COMMON STOCK ------------ (Title of Class of Securities) 45666Q 10 2 ----------- (CUSIP Number) December 31, 2000 ---------------------------------------- (Date of Event Which Requires Filing of this Statement) Check appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [ ] Rule 13d-1(c) [X] Rule 13d-1(d) The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). (Continued on following pages) Page 1 of 5 Pages 2 CUSIP No. 45666Q 10 2 13G Page 2 of 5 Pages 1 NAME OF REPORTING PERSON S.S OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Diaz Nesamoney -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION USA -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 3,993,960 NUMBER OF ------------------------------------------------- SHARES 6 SHARED VOTING POWER 10,664 BENEFICIALLY ------------------------------------------------- OWNED BY 7 SOLE DISPOSITIVE POWER 3,993,960 EACH ------------------------------------------------- REPORTING 8 SHARED DISPOSITIVE POWER 10,664 PERSON WITH -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,004,624 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.33% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN -------------------------------------------------------------------------------- 3 Page 3 of 5 Pages ITEM 1. (a) NAME OF ISSUER Informatica Corporation ITEM 1. (b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES: 3350 West Bayshore Road, Palo Alto, CA 94301 ITEM 2. (a) NAME OF PERSON FILING: Diaz Nesamoney ITEM 2. (b) ADDRESS OF PRINCIPAL OFFICE 3350 West Bayshore Road, Palo Alto, CA 94301 ITEM 2. (c) CITIZENSHIP: USA ITEM 2. (d) TITLE OF CLASS OF SECURITIES: Common Stock ITEM 2. (e) CUSIP NUMBER: 45666Q 10 2 ITEM 3. Not applicable. ITEM 4. OWNERSHIP The following information with respect to the ownership of the Common Stock of the Issuer by the person filing this Statement is provided as of December 31, 2000: (a) Amount Beneficially Owned: 4,004,624 (b) Percent of Class: 5.33% 4 Page 4 of 5 Pages (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: 3,993,960 (ii) Shared power to vote or to direct the vote: 10,664 (iii) Sole power to dispose or to direct the disposition of: 3,993,960 (iv) Shared power to dispose or to direct the disposition of: 10,664 ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS Not applicable. ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON Not applicable. ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY Not applicable. ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP Not applicable. ITEM 9. NOTICE OF DISSOLUTION OF THE GROUP Not applicable. ITEM 10. CERTIFICATION Not applicable. 5 Page 5 of 5 Pages SIGNATURE After reasonable inquiry and to the best of our knowledge and belief, the undersigned certify that the information set forth in this statement is true, complete and correct. Date: February 6, 2001 /s/ Diaz Nesamoney ----------------------------------------- Diaz Nesamoney