Note - Sagent Technology Inc. and Thomas M. Lounibos


                                      NOTE

$630,000.00
                                                                   Mountain View

                                                                February 5, 1999

      FOR VALUE RECEIVED, Thomas M. Lounibos promises to pay to Sagent
Technology, Inc., a Delaware corporation (the 'Company'), the principal sum of
Six Hundred Thirty Thousand dollars ($630,000.00), together with interest on the
unpaid principal hereof from the date hereof at the rate of (4.66%) per annum,
compounded semiannually.

Principal and interest shall be due and payable on January 28, 2002. Payment of
principal and interest shall be made in lawful money of the United States of
America.

      The undersigned may at any time prepay all or any portion of the principal
or interest owing hereunder.

      This Note is subject to the terms of the Option, dated as of December 28,
1998. This Note is secured in part by a pledge of the Company's Common Stock
under the terms of a Security Agreement of even date herewith and is subject to
all the provisions thereof.

      The holder of this Note shall have full recourse against the undersigned,
and shall not be required to proceed against the collateral securing this Note
in the event of default.

      In the event the undersigned shall cease to be an employee, director or
consultant of the Company for any reason, this Note shall, at the option of the
Company, be accelerated, and the whole unpaid balance on this Note of principal
and accrued interest shall be immediately due and payable.

      Should any action be instituted for the collection of this Note, the
reasonable costs and attorneys' fees therein of the holder shall be paid by the
undersigned.

                                            /s/ THOMAS M. LOUNIBOS
                                            ------------------------------------
                                            Signature

                                            Thomas M. Lounibos
                                            ------------------------------------
                                            Print Name

                                      NOTE

$3,442.95
                                                                   Mountain View

                                                                February 5, 1999

      FOR VALUE RECEIVED, Thomas M. Lounibos promises to pay to Sagent
Technology, Inc., a Delaware corporation (the 'Company'), the principal sum of
Three Thousand Four Hundred Forty Two dollars and Ninety Five cents ($3,442.95),
together with interest on the unpaid principal hereof from the date hereof at
the rate of (4.66%) per annum, compounded semiannually.

Principal and interest shall be due and payable on January 28, 2002. Payment of
principal and interest shall be made in lawful money of the United States of
America.

      The undersigned may at any time prepay all or any portion of the principal
or interest owing hereunder.

      This Note is subject to the terms of the Option, dated as of March 6,
1996. This Note is secured in part by a pledge of the Company's Common Stock
under the terms of a Security Agreement of even date herewith and is subject to
all the provisions thereof.

      The holder of this Note shall have full recourse against the undersigned,
and shall not be required to proceed against the collateral securing this Note
in the event of default.

      In the event the undersigned shall cease to be an employee, director or
consultant of the Company for any reason, this Note shall, at the option of the
Company, be accelerated, and the whole unpaid balance on this Note of principal
and accrued interest shall be immediately due and payable.

      Should any action be instituted for the collection of this Note, the
reasonable costs and attorneys' fees therein of the holder shall be paid by the
undersigned.

                                            /s/ THOMAS M. LOUNIBOS
                                            ------------------------------------
                                            Signature

                                            Thomas M. Lounibos
                                            ------------------------------------
                                            Print Name


                                      -2-

                                      NOTE

$300,000.00
                                                                   Mountain View

                                                                February 5, 1999

      FOR VALUE RECEIVED, Thomas M. Lounibos promises to pay to Sagent
Technology, Inc., a Delaware corporation (the 'Company'), the principal sum of
Three Hundred Thousand dollars ($300,000.00), together with interest on the
unpaid principal hereof from the date hereof at the rate of (4.66%) per annum,
compounded semiannually.

Principal and interest shall be due and payable on January 28, 2002. Payment of
principal and interest shall be made in lawful money of the United States of
America.

      The undersigned may at any time prepay all or any portion of the principal
or interest owing hereunder.

      This Note is subject to the terms of the Option, dated as of September 29,
1997. This Note is secured in part by a pledge of the Company's Common Stock
under the terms of a Security Agreement of even date herewith and is subject to
all the provisions thereof.

      The holder of this Note shall have full recourse against the undersigned,
and shall not be required to proceed against the collateral securing this Note
in the event of default.

      In the event the undersigned shall cease to be an employee, director or
consultant of the Company for any reason, this Note shall, at the option of the
Company, be accelerated, and the whole unpaid balance on this Note of principal
and accrued interest shall be immediately due and payable.

      Should any action be instituted for the collection of this Note, the
reasonable costs and attorneys' fees therein of the holder shall be paid by the
undersigned.

                                            /s/ THOMAS M. LOUNIBOS
                                            ------------------------------------
                                            Signature

                                            Thomas M. Lounibos
                                            ------------------------------------
                                            Print Name


                                      -3-